ML101810146

Northern States Power Company'S First Supplemental Disclosures Regarding Safety Culture Contention

ML101810146
Person / Time
Site:	Prairie Island
Issue date:	06/30/2010
From:	George S Northern States Power Co, Pillsbury, Winthrop, Shaw, Pittman, LLP
To:	Atomic Safety and Licensing Board Panel
SECY RAS
References
50-282-LR, 50-306-LR, ASLBP 08-871-01-LR-BD01, RAS 18070
Download: ML101810146 (180)

Text

June 30, 2010 UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION Before the Atomic Safety and Licensing Board In the Matter of )

) Docket Nos. 50-282-LR Northern States Power Co. ) 50-306-LR

)

(Prairie Island Nuclear Generating Plant, ) ASLBP No. 08-871-01-LR Units 1 and 2) )

NORTHERN STATES POWER COMPANYS FIRST SUPPLEMENTAL DISCLOSURES REGARDING SAFETY CULTURE CONTENTION Pursuant to 10 C.F.R. § 2.336(a), Northern States Power Company - a Minnesota Corporation (NSPM) hereby supplements its initial disclosures regarding the Prairie Island Indian Communitys (PIIC) safety culture contention as follows. A description by category and location of relevant, non-privileged documents and data compilations that have been identified as subsequently developed or obtained is provided in Attachment 1. Arrangements for reviewing these documents at the Prairie Island Nuclear Generating Plant Training Center can be made by contacting Mr. Eugene Eckholt at 651-388-1121 ext. 4137. Arrangements for reviewing these documents in Washington D.C. can be made by contacting Ms. Stefanie Nelson George at 202-663-9382. A listing of documents that are proprietary is provided in Attachment

2. A listing of documents that are privileged is provided in Attachment 3.

Respectfully Submitted,

/Signed electronically by Stefanie Nelson George /

David R. Lewis Matias F. Travieso-Diaz Stefanie Nelson George PILLSBURY WINTHROP SHAW PITTMAN LLP 2300 N Street, NW Washington, DC 20037-1128 Tel. (202) 663-8474 Counsel for Northern States Power Co.

Dated: June 30, 2010 UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION Before the Atomic Safety and Licensing Board In the Matter of )

) Docket Nos. 50-282-LR Northern States Power Co. ) 50-306-LR

)

(Prairie Island Nuclear Generating Plant, ) ASLBP No. 08-871-01-LR Units 1 and 2) )

CERTIFICATE OF SERVICE I hereby certify that copies of Northern States Power Companys First Supplemental Disclosures Regarding Safety Culture Contention, dated June 30, 2010, was provided to the Electronic Information Exchange for service on the individuals listed below, this 30th day of June, 2010.

Administrative Judge Administrative Judge William J. Froehlich, Esq., Chair Dr. Gary S. Arnold Atomic Safety and Licensing Board Atomic Safety and Licensing Board Mail Stop T-3 F23 Mail Stop T-3 F23 U.S. Nuclear Regulatory Commission U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Washington, D.C. 20555-0001 Email: wjf1@nrc.gov Email: gxa1@nrc.gov Administrative Judge Secretary Dr. Thomas J. Hirons Attn: Rulemakings and Adjudications Staff Atomic Safety and Licensing Board Mail Stop O-16 C1 Mail Stop T-3 F23 U.S. Nuclear Regulatory Commission U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Washington, D.C. 20555-0001 secy@nrc.gov; hearingdocket@nrc.gov Email: thomas.hirons@nrc.gov

Office of Commission Appellate Adjudication Beth N. Mizuno, Esq.

Mail Stop O-16 C1 Brian G. Harris, Esq.

U.S. Nuclear Regulatory Commission Maxwell C. Smith, Esq, Washington, DC 20555-0001 Office of the General Counsel E-mail: ocaamail@nrc.gov Mail Stop O-15 D21 U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 E-mail: beth.mizuno@nrc.gov; brian.harris@nrc.gov; maxwell.smith@nrc.gov Philip R. Mahowald, Esq.

General Counsel, Prairie Island Indian Community 5636 Sturgeon Lake Road Welch, MN 55089 pmahowald@piic.org

/Signed electronically by Stefanie Nelson George /

Stefanie Nelson George June 29,2010 UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION Before the Atomic Safety and Licensing Board In the Matter of )

) Docket Nos. 50-282-LR Northern States Power Co. ) 50-306-LR

)

(Prairie Island Nuclear Generating Plant, ) ASLBP No. 08-871-01-LR Units 1 and 2) )

Certification of First Supplemental Disclosures Regarding Safety Culture Contention Affidavit of Eugene F. Eckholt I, Eugene F. Eckholt, being duly sworn, state:

I am providing this celiification in suppOli of the disclosures of Northern States Power Company - a Minnesota Corporation ("NSPM") in the license renewal proceeding for the Prairie Island Nuclear Generating Plant, Units 1 and 2. I am the Project Manager for the License Renewal Project and am authorized to provide this celiification.

To the best of my knowledge and belief, NSPM's first supplemental disclosures regarding the Prairie Island Indian Community's safety culture contention in this proceeding contain all materials required to be disclosed by 10 C.F.R. § 2.336(d), as modified by the Atomic Safety and Licensing Board's May 13,2010 and June 10,2010 Orders, that NSPM has identified to date as relevant through a search of the information and documentation reasonably available to and under the possession, custody and control ofNSPM.

Further, to the best of my knowledge, information and belief, and based on the review of information and documentation reasonably available to and under the possession, custody and control ofNSPM, these first supplemental disclosures are accurate and complete as ofthis date.

Further the affiant sayeth not.

~~-....,,£ £&~Ab Eugene Eckholt Project Manager, License Renewal Project Northern States Power Company - a Minnesota Corporation Prairie Island Nuclear Generating Plant 1717 Wakonade Drive East Welch, MN 55089 651-388-1121 ext. 4137 Subscribed and sworn to before me this 29'h day of June,. 2010

~~L

. .I

, JANET lOUISE SWANSON NOTARY PUBLIC* MINNESOTA

.~~~~~CO~M~MI~SS~IO_NDWNWIR~ESM1~~~1~M01N2.

My commission expires: /-...3/-d)..Ol;;J...

ATTACHMENT 1 Northern States Power Co.

Prairie Island Nuclear Generating Plant, Units 1 and 2 License Renewal Proceeding Docket Nos. 50-282-LR, 50-306-LR; ASLBP No. 08-871-01-LR Production Log for NSPMs First Supplemental Disclosures Regarding Safety Culture Contention (June 30, 2010)

Document Number Description PROD00019941 Photo Related to Refueling Cavity Leakage PROD00019942 Photo Related to Refueling Cavity Leakage PROD00019943 Photo Related to Refueling Cavity Leakage PROD00019944 Photo Related to Refueling Cavity Leakage PROD00019945 4/26/2010 SE-0401 Action Tracking Search Engine PROD00019946 5/27/2010 Summary for stakeholder communications PROD00019947 Narrative re: NRC regulatory conference and proposed findings PROD00019948 3/9/2010 Maintenance Procedure for Refuel Cavity Caulking PROD00019949 11/6/2009 Maintenance Operating Procedure for Isolation, Restoration and Testing of 11 TD Aux Feed Pump PROD00019950 50.59 Screening: Change Air Filter/Pressure Regulator Make/Model AF CV-31998 & CV-31999 AFW Steam Admission Valves PROD00019951 50.59 Screening: Preparation of Maximum Expected Differential Calculations for PINGP MOVs PROD00019952 5/19/2009 Action Request: Declining Trend in Site Cross Cutting Index PROD00019953 6/10/2009 Action Request: CAPR from RCE 01157726 lost when procedure revised PROD00019954 1/20/2006 Procedure Revision for 22 Turbine Driven Auxiliary Feedwater Pump Auto Start and Functional Refueling Outage Test PROD00019955 12/22/2009 Action Request Record Report re PITC 3.18 Critical Task List PROD00019956 Response to NRC question re: postulate break sized in the CL system and flow form Fire Protection sprinkler acuation.

PROD00019957 1/6/2010 Email from M. Mitchell to K. Balakrishnan re: threshold seals for flooding analysis PROD00019958 1/24/2010 Determination of Habitability Time in Turbine Building After HELB Scenarios that cause Flooding PROD00019959 Flow Diagram Sprinkler Fire Protection System Turbine Room PROD00019960 3/27/1996 Revised Fire Protection Piping Turbine Room Unit 1 Schematic PROD00019961 10/9/1982 Revisions to Fire protection piping service bldg schematic PROD00019962 3/26/1996 Revisions to Fire Protection Piping Turbine Room Unit 2 schematic PROD00019963 11/11/2008 Revisions to Turbine Bearing Preaction System PROD00019964 3/25/1996 Revisions to Turbine Unit 1 Wet System Below Operative Schematic PROD00019965 06/12/1992 Revision to Unit 1 Sprinkler Plan schematic PROD00019966 1/25/1971 Revision to Systems SWP1 Sprinkler System schematic PROD00019967 11/13/1976 Systems SWP-4 SWP-5 SWP-6 Sprinkler Systems schematic PROD00019968 11/23/1970 System SWP-3 Sprinkler System schematic PROD00019969 5/26/1971 Colt Industries Pump Division Certified Curve Head Pressure v. GPM

Document Number Description PROD00019970 3/30/2009 email from M. Smutny to D. Malek regarding access after HELB at PINGP.

PROD00019971 3/9/2009 NRC Question Response Form regarding HELB at PINGP.

PROD00019972 4/17/2009 memo from D. Malek to K. Ryan regarding CC Piping adjacent to HELB Location in Turbine Building.

PROD00019973 7/6/2009 memo from D. Malek to K. Ryan regarding CC Piping adjacent to HELB Location in turbine building.

PROD00019974 3/5/2009 NRC Question Response Form regarding operational history of 12-MS-35.

PROD00019975 3/5/2009 NRC Question Response Form regarding operations staffing at PINGP.

PROD00019976 5/20/2009 email from J. Ritter to D. Malek regarding variance in CC surge tank level.

PROD00019977 Component Cooling Water Surge Tank Level Calculation.

PROD00019978 2/19/2009 email from J. Johnson to D. Malek regarding draining of CC valves.

PROD00019979 3/18/2009 email from D. Malek to K. DenHerder regarding CC-HELB analysis.

PROD00019980 3/5/2009 NRC Question Response Form regarding de-aeration of steam line at PINGP.

PROD00019981 3/8/2009 email from D. Malek to K. DenHerder regarding analysis of CC-HELB.

PROD00019982 4/21/2009 email from D. Malek to R. Murray and K. DenHerder regarding CC-HELB update.

PROD00019983 1/12/2010 email from K. DenHerder to J. Bickel regarding specifications at PINGP relating to HELB.

PROD00019984 7/24/2009 procedure manual titled Strategic Water Chemistry Plan for PINGP Secondary System Chemistry.

PROD00019985 Screen capture image depicting CC-HELB\ERCS Trend of U2 Tank Levels PROD00019986 2/18/2009 email from J. Ritter to D. Malek regarding equipment used in CC system.

PROD00019987 3/20/2009 email from D. Malek to K. Kriesel regarding CC/HELB contingencies at PINGP.

PROD00019988 6/4/2009 email from D. Malek to R. Rohrer regarding CC-HELB report.

PROD00019989 3/13/2009 email from R. Best to D. Malek regarding CC issue and licensing at PINGP.

PROD00019990 4/3/2009 Report: Limiting Time for Operator Action to Mitigate Flooding Effects from a Postulated Feedwater Condensate System HELB PROD00019991 PDA Driven Turbine Building Flooding Events PROD00019992 2/18/2009 email from J. Ritter to D. Malek regarding operation of reactor tank at PINGP.

PROD00019993 2/18/2009 email from J. Ritter to D. Malek regarding reactor tank operation at PINGP.

PROD00019994 2/18/2009 email from J. Ritter to D. Malek regarding reactor tank operation at PINGP.

PROD00019995 2/23/2010 NRC Question Response Form regarding time-dependent operator actions.

PROD00019996 2/23/2010 NRC Question Response Form regarding time-dependent operator actions.

PROD00019997 Simulator Runs for Turbine Building HELB flood.

PROD00019998 6/5/2010 email from R. Best to D. Malek regarding CC HELB issue at PINGP.

PROD00019999 7/1/2009 email from J. Ritter to S. Eide regarding SGTR event tree at PINGP.

PROD00020000 6/2/2009 email from J. Ritter to D. Malek regarding HELB calculations.

PROD00020001 5/15/2009 email from J. Ritter to D. Malek regarding HELB tornado scenario.

PROD00020002 6/5/2009 email from D. Potter to D. Malek and others at Xcel regarding HELB issues.

PROD00020003 3/26/2009 email from W. Djordjevic to D. Malek and others at Xcel regarding CC piping.

PROD00020004 6/5/2009 email from R. Rohrer to D. Malek regarding CC piping at PINGP.

PROD00020005 4/19/2009 memo from D. Malek to K. Ryan regarding status of turbine building HELB / CC piping 2

Document Number Description PROD00020006 3/30/2009 email from M. Smutny to D. Malek and D. Herling regarding flooding conditions at PINGP.

PROD00020007 3/30/2009 email from D. Smith to D. Malek and D. Herling regarding HELB flooding conditions at PINGP.

PROD00020008 6/5/2009 email from D. Malek to R. Best regarding CC-HELB risk significance.

PROD00020009 5/9/2009 email from R. Best to B. Horner regarding calculations for CC lines in turbine building.

PROD00020010 5/9/2009 email from B. Horner to R. Best regarding calculations for CC lines in turbine building.

PROD00020011 5/9/2009 email from R. Best to B. Horner regarding calculations for CC lines in turbine building.

PROD00020012 5/9/2009 email from B. Horner to R. Best regarding calculations for CC lines in turbine building.

PROD00020013 5/9/2009 email from R. Best to B. Horner regarding calculations for CC lines in turbine building.

PROD00020014 5/9/2009 email from B. Horner to R. Best regarding calculations for CC lines in turbine building.

PROD00020015 5/9/2009 email from J. Ritter to B. Horner and R. Best regarding calculation for CC lines in turbine building.

PROD00020016 5/9/2009 email from J. Ritter to B. Horner and R. Best regarding calculation for CC lines in turbine building.

PROD00020017 5/9/2009 email from B. Horner to J. Ritter and R. Best regarding calculations for CC lines in turbine building.

PROD00020018 3/20/2009 email from D. Malek to K. DenHerder regarding CC-HELB scenarios at PINGP.

PROD00020019 3/16/2009 email from D. Malek to K. DenHerder regarding CC-HELB scenarios at PINGP.

PROD00020020 3/20/2009 email from K. DenHerder to D. Malek regarding CC-HELB scenarios at PINGP.

PROD00020021 6/3/2009 email from D. Malek to A. Velaski regarding CC / HELB discussion.

PROD00020022 6/4/2009 email from D. Malek to R. Best regarding CC-HELB scenarios and measurements from PINGP.

PROD00020023 6/4/2009 email from D. Malek to R. Best regarding CC-HELB scenarios in turbine building.

PROD00020024 Table regarding effects of external events on cooling system components at PINGP.

PROD00020025 6/5/2009 email from R. Best to D. Malek regarding scenarios for CC-HELB in turbine building.

PROD00020026 Component Cooling Water / Turbine Building SDP Issue Risk Significance PROD00020027 6/5/2009 email from D. Malek to R. Best and J. Ritter regarding scenarios for CC-HELB in turbine building.

PROD00020028 6/5/2009 email from D. Malek to R. Best regarding scenarios for CC-HELB in turbine building.

PROD00020029 8/12/2009 email from D. Malek to B. Slack regarding feedback for report about CC-HELB at turbine building.

PROD00020030 8/24/2009 email from J. Ritter to E. Krantz and D. Malek regarding scenarios for CC-HELB flooding at PINGP.

PROD00020031 8/24/2009 email from E. Krantz to J. Ritter and D. Malek regarding flooding scenarios for CC-HELB at PINGP.

PROD00020032 8/24/2009 email from J. Ritter to E. Krantz and D. Malek regarding flooding scenarios for CC-HELB at PINGP.

PROD00020033 3/19/2009 email from K. Kriesel to W. Djordjevic regarding analysis of structures at PINGP turbine building.

PROD00020034 5/31/2009 email from R. Best to D. Malek and J. Ritter regarding seismic scenarios at PINGP.

PROD00020035 3/25/2009 Engineering Walkdown Draft Report regarding scenarios with CC system at PINGP.

PROD00020036 3/25/2009 Engineering Walkdown Draft Report regarding scenarios with CC system at PINGP PROD00020037 4/3/2009 email from K. Kriesel to B. Horner, R. Best and D. Malek regarding effects of high winds at PINGP.

PROD00020038 4/3/2009 email from B. Horner to R. Best, D. Malek, and K. Kriesel regarding effects of high wind at PINGP.

PROD00020039 3/31/2009 email from R. Best to D. Malek and J. Ritter regarding report discussing effects of high winds at PINGP.

PROD00020040 6/11/2009 email from R. Best to D. Malek regarding CC-HELB evaluation at PINGP.

PROD00020041 6/5/2009 report by R. Best regarding Component Cooling Water/Turbine Building SDP Issue Risk Significance PROD00020042 3/3/2009 email from J. Ritter to D. Malek regarding HELB-CC events at PINGP.

3

Document Number Description PROD00020043 6/5/2009 email from R. Best to D. Malek discussing variables for simulated events at PINGP.

PROD00020044 6/4/2009 email from R. Best to D. Malek discussing variables for simulated events at PINGP.

PROD00020045 6/4/2009 email from R. Best to D. Malek discussing variables for simulated events at PINGP.

PROD00020046 2/25/2010 email from D. Malek to R. Rohrer regarding CC simulations at PINGP.

PROD00020047 Simulator Runs for Turbine Building HELB Flood at PINGP.

PROD00020048 2/25/2010 email from D. Malek to R. Rohrer and J. Lash regarding simulator run at PINGP.

PROD00020049 7/9/2009 meeting notes with PINGP event tree reviews.

PROD00020050 6/5/2009 email from R. Best to D. Malek regarding effect of CC on SDC at PINGP.

PROD00020051 6/5/2009 email from D. Malek to R. Best regarding effect of CC on SDC at PINGP.

PROD00020052 5/31/2009 email from R. Best to J. Ritter and D. Malek regarding seismic and tornado simulations for PINGP.

PROD00020053 5/31/2009 email from R. Best to J. Ritter and D. Malek regarding seismic and tornado simulations for PINGP.

PROD00020054 3/9/2009 email from W. Hadeka to D. Malek regarding HELB / CC SDP at turbine building at PINGP.

PROD00020055 3/31/2009 email from W. Hadeka to D. Malek regarding HELB / CC SDP update at turbine building at PINGP.

PROD00020056 5/21/2009 EPRI calculation dealing with CC failure scenario at PINGP PROD00020057 5/21/2009 EPRI calculation dealing with CC failure scenario at PINGP PROD00020058 6/11/2009 email from R. Best to D. Malek regarding call to NRC about CC/HELB at PINGP.

PROD00020059 6/9/2009 email from R. Best to D. Malek and A. Peterman regarding impact of CC-HELB review.

PROD00020060 Table with HELB pipe break calculations.

PROD00020061 Calculations involving SDC CCDP at PINGP.

PROD00020062 6/17/2009 K. Den Herder Response to NRC Question Response Form related to replacement of FAC piping for CC/HELB SDP requested 6/10/2009 PROD00020063 6/10/2009 K. Den Herder Response to NRC Question Response Form related to replacement of FAC piping for CC/HELB SDP requested 6/10/2009 PROD00020064 PowerPoint presentation re CCHELB/ Flooding Program PROD00020065 3/19/2010 Email from M. Huting to M. Schimmel and others re MSRC evaluation and CCHELB inspection PROD00020066 6/3/2009 PowerPoint presentation re CC/HELB NRC meeting PROD00020067 5/21/2009 Email from M. Huting to M. Reddeman and others re summary of CCHELB management alignment call PROD00020068 4/29/2009 Email from M. Huting to M. Schimmel re resolution of SDP activities on CCHELB PROD00020069 2/16/2009 Email from M. Huting to M. Reddemann and others re whether CCHELB issue applies to Units 1 and 2 PROD00020070 PowerPoint presentation on PINGP CCHELB/Flooding Program Direction PROD00020071 PowerPoint presentation on PINGP CCHELB/Flooding Program Direction PROD00020072 2/15/2010 from M. Huting to T. Roddey & R. Rohrer re CCHELB timeline PROD00020073 CCHELB timeline PROD00020074 CC/HELB timeline of events PROD00020075 CCHELB timeline of events PROD00020076 Flooding Program Analysis PROD00020077 6/3/2009 Email from M. Huting to M. Schimmel summary of CCHELB management alignment call 4

Document Number Description PROD00020078 3/9/2009 Email from M. Huting to D. Kettering & S. Skoyen re feedback from CCHELB SDP meeting PROD00020079 3/9/2009 Summary of discussion with Jack Geissner at NRC on CC/HELB SDP Issue PROD00020080 3/17/2010-3/18/2010 Summary from Management Safety Review Committee Meeting No 2010-01 PROD00020081 White paper on current and historical situation surrounding HELB flooding PROD00020082 PowerPoint on NRC CCHELB submission PROD00020083 6/25/2009 Email from M. Huting to R. Rohrer and others at Xcel re CCHELB meeting with NRC PROD00020084 PowerPoint re direction of PINGP CCHELB/Flooding Program PROD00020085 1/21/2010 Email from M. Huting to R. Rohrer re contractor work on PI SDP flooding PROD00020086 5/7/2009 Email from M. Huting to M. Schimmel re direction of CCHELB presentation to NRC PROD00020087 Presentation approach on PINGP Flooding SDP to NRC PROD00020088 PowerPoint on direction or PINGP CCHELB Program PROD00020089 12/29/2009 Email from M. Huting to C. Hessey re status of modifications for CCHELB PROD00020090 12/29/2009 Email from C. Hessey to M. Huting re status of modifications for CCHELB PROD00020091 White paper on status of CCHELB outcome and continued efforts prepared by M. Huting PROD00020092 2/12/2009 Email from M. Huting to J. Ritter RE CC/HELB SDP assessment update PROD00020093 5/28/2010 Email from M. Huting to C. Hessen re talking points for meeting on NRC determination PROD00020094 White paper by M. Huting on CCHELB outcome and continued efforts PROD00020095 6/4/2009 PowerPoint for CC/HELB NRC meeting PROD00020096 White paper on SDP potential on HELB induced flooding PROD00020097 PowerPoint on status of NRC CCHELB PROD00020098 3/27/2010 report by C. Koehler CC/HELB 95001 inspection preparation PROD00020099 6/24/2009 Email from R. Rohrer to J. Anderson & others at Xcel re status update Cochlea meeting with NRC PROD00020100 3/20/1010 Email from J. Anderson to M. Huting re CCHELB inspection readiness PROD00020101 6/3/2009 PowerPoint CC/HELB NRC meeting PROD00020102 6/4/2010 Email from M. Schimmel to M. Huting re NRC Flooding Regulatory Conference PROD00020103 6/4/2010 Email from M. Huting to M. Schimmel re NRC Flooding Regulatory Conference PROD00020104 6/3/2010 Email from M. Huting to M. Schimmel re NRC Flooding Regulatory Conference PROD00020105 White paper assessing current and historical HELB induced flooding at PINGP PROD00020106 White paper assessing current and historical HELB induced flooding at PINGP PROD00020107 White paper re CCHELB outcome and continued efforts prepared by M. Huting PROD00020108 5/28/2010 Email from C. Hessen to M. Huting re talking points for 1500 meeting to discuss NRC regulatory conference PROD00020109 White Paper re CCHELB outcome and continued efforts prepared by M. Huting PROD00020110 1/25/2010 EC-15510 Temporary Flood Control Barrier for D5/D6 PROD00020111 1/25/2010 EC-15510 Temporary Flood Control Barrier for D5/D6 PROD00020112 1/25/2010 EC-15510 Temporary Flood Control Barrier for D5/D6 PROD00020113 1/25/2010 EC-15510 Temporary Flood Control Barrier for D5/D6 PROD00020114 Design Input Checklist (Part A- Engineering Programs and Departmental Reviews) Engineering Change Number 15510 5

Document Number Description PROD00020115 1/25/2010 Memo from B. Karnowski to K. Ryan re: EC 15510, Temporary Flood Control Barrier for D5/D6 PROD00020116 1/25/2010 Memo from J. Harlander and R. Murray to T. Roddey re: EC 15510, Temporary Flood Control Barrier for D5/D6 PROD00020117 1/25/2010 Memo from J. Harlander and R. Murray to T. Roddey re: EC 15510, Temporary Flood Control Barrier for D5/D6 PROD00020118 HELB Flood Barrier Do Not Remove sign PROD00020119 HELB Flood Barrier Do Not Remove sign PROD00020120 1/26/2010 Design Review Comment Form re: EC 15510/Temporary Flood Control Barrier for D5/D6 PROD00020121 1/26/2010 Design Review Comment Form re: EC 15510/Temporary Flood Control Barrier for D5/D6 PROD00020122 Temporary Modification Control Form re: Temporary Flood Control Barrier for D5/D6 PROD00020123 Temporary Modification Control Form re: Temporary Flood Control Barrier for D5/D6 PROD00020124 1/26/2010 Temporary Modification Extension re: Temporary Flood Control Barrier for D5/D6 PROD00020125 1/26/2010 Temporary Modification Extension re: Temporary Flood Control Barrier for D5/D6 PROD00020126 1/26/2010 Temporary Modification Extension re: Temporary Flood Control Barrier for D5/D6 PROD00020127 5/24/2010 Temporary Modification Extension re: Temporary Flood Control Barrier for D5/D6 PROD00020128 50.59 Screening re: Temporary Flood Control Barrier for D5/D6 PROD00020129 1/25/2010 50.59 Screening re: Temporary Flood Control Barrier for D5/D6 PROD00020130 EC 15510 Turnover Sheet PROD00020131 Email with attachments from J. Horner to B. Karnowski re: Sump B Leakage PROD00020132 WO# 9911323 re: Replace Grout in Sump B PROD00020133 4/20/2010 2R26 Vacuum Box Testing in Unit 2 Re-Fueling Cavity PROD00020134 10/21/2009 EC-15102 Temporary Flood Control Barrier for D1 & D2 Rooms PROD00020135 EC-15102 Temporary Flood Control Barrier for D1 & D2 Rooms PROD00020136 10/21/2009 EC-15102 Temporary Flood Control Barrier for D1 & D2 Rooms PROD00020137 EC-15102 Temporary Flood Control Barrier for D1 & D2 Rooms PROD00020138 10/23/2009 letter from M. Hopman to H. Hoelscher re: EC-15102, Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020139 10/23/2009 letter from M. Hopman to H. Hoelscher re: EC-15102, Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020140 50.59 Screening re: EC 15102: Temporary Flood Control Barriers for D1 and D2 Rooms PROD00020141 Modification Classification re: Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020142 10/23/2009 Modification Classification re: Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020143 Modification Package Index re: PINGP Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020144 10/24/2009 Modification Package Index re: PINGP Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020145 Design Input Checklist (Part A- Engineering Programs and Departmental Reviews) re: Engineering Change Number 15102 6

Document Number Description PROD00020146 Design Input Checklist (Part A - Engineering Programs and Departmental Reviews) re: Engineering Change Number 15102 PROD00020147 Design Input Checklist (Part B- Design Considerations, Requirements, and Standards) re: EC Number 15102 PROD00020148 Design Input Checklist (Part B- Design Considerations, Requirements, and Standards) re: EC Number 15102 PROD00020149 10/21/2009 Design Input Consultation Form re: EC 15102 Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020150 10/21/2009 Design Input Consultation Form re: Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020151 10/21/2009 Design Input Consultation Form re: Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020152 10/21/2009 Design Input Consultation Form re: Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020153 10/21/2009 Design Input Consultation Form re: Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020154 10/21/2009 Design Input Consultation Form re: Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020155 10/21/2009 Design Input Consultation Form re: Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020156 10/23/2009 Design Input Consultation Form re: Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020157 10/23/2009 Design Input Consultation Form re: EC 15102 - Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020158 10/21/2009 Design Input Consultation Form re: HELB Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020159 10/21/2009 Design Input Consultation Form re: HELB Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020160 10/21/2009 Design Input Consultation Form re: Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020161 10/21/2009 Design Input Consultation Form re: Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020162 10/21/2009 Design Input Consultation Form re: Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020163 10/21/2009 Design Input Consultation Form re: Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020164 10/21/2009 Design Input Consultation Form re: Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020165 10/21/2009 Design Input Consultation Form re: Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020166 10/21/2009 Design Input Consultation Form re: Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020167 10/21/2009 Design Input Consultation Form re: (EC-15102) Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020168 10/21/2009 Design Input Consultation Form re: Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020169 10/21/2009 Design Input Consultation Form re: Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020170 10/21/2009 Design Input Consultation Form re: Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020171 10/21/2009 Design Input Consultation Form re: Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020172 10/23/2009 Design Input Consultation Form re: Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020173 10/23/2009 Design Input Consultation Form re: Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020174 Design Review Checklist re: EC 15102/Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020175 10/24/2009 Design Review Comment Form re: EC 15102/Temporary Flood Control Barrier for D1 and D2 PROD00020176 10/24/2009 Design Review Comment Form re: EC 15102/Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020177 Temporary Modification Control Form (PassPort Version) re: Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020178 Temporary Modification Control Form re: Temporary Flood Control Barrier for D1 and D2 Rooms PROD00020179 Temporary Modification Control Form (PassPort Version) re: HELB Barrier label PROD00020180 Temporary Modification Control Form (PassPort Version) re Raps Installation Checklist PROD00020181 Temporary Modification Extension re: Temporary Flood Control Barrier for D1 and D2 Rooms 7

Document Number Description PROD00020182 EC 15102 HELB Barrier Layout Assembly Sketch PROD00020183 EC 15102 HELB Barrier Layout Assembly Sketch PROD00020184 EC 15102 HELB Barrier Layout Assembly Sketch PROD00020185 HELB Barrier sign PROD00020186 Photo of HELB Barrier sign PROD00020187 Design Input Checklist (Part A- Engineering Programs and Departmental Reviews) re: Engineering Change Number 11963 PROD00020188 Temporary Modification Control Form (PassPort Version) re: Installation of the Lower 4KV Room Flood Barrier PROD00020189 1/9/2008 50.59 Screening re: Installation of the Lower 4KV Room Flood Barrier PROD00020190 12/09/2008 NRC Question Response Form, CC piping and seismic analysis PROD00020191 Undated memo A-R 737382 OPR to determine non-conformance of CC system PROD00020192 Undated document "Review of Seismic Qualification of Components Identified in CAP037749" PROD00020193 Undated document OBD000109 non-seismic components in the CC system PROD00020194 7/15/2005 meeting notes re: Qualification of CC piping to cold chem lab PROD00020195 Undated document "Component Cooling Piping Project" "Engineering Work Scope" PROD00020196 Undated Engineering Assistance Request Form re: seismic issues with CC piping in the Turbine Building PROD00020197 Undated memo Component Cooling System Piping to Cold Chemistry and Hot Chemistry Lab.

PROD00020198 Undated Phase 1 Study Report for CC Piping PROD00020199 Undated document Component Cooling Water System Phase 1 Study of Nonsafety Related CC Piping PROD00020200 Undated document Component Cooling Water System Phase 1 Study of Nonsafety Related CC Piping (Phase 1 Cost)

PROD00020201 Undated document Component Cooling Water System Phase 1 Study of Nonsafety Related CC Piping (Phase 2 Cost)

PROD00020202 Undated Engineering Assistance Request (EAR) Component Cooling Piping in the Hot Chem Lab is not Seismically Qualified PROD00020203 3/6/2006 Letter from A. V. Setlur, Automated Engineering to Marc Meyer, Nuclear Management Company re: Proposal to Provide Engineering Services for CC Piping Project PROD00020204 3/19/2005 Email form Amjid Qureshi to Jeffery Conners and others re: non-conforming condition of 40 components in CC cooling system PROD00020205 3/2/2006 Letter from Philip Gazda, Steveson Associates to Marc Meyer, Nuclear Management Company re: Proposal for CC Piping Project PROD00020206 11/10/2005 Email from Steven Thomas to Amjid Qureshi re: Phase 1 Study of CC system and single failure criteria PROD00020207 Undated table, Review of Issues and Options to Modify CC Piping to meet Upgraded Classification PROD00020208 Undated memo re: review of the CC system and Seismic Qualification of Components PROD00020209 6/22/2004 Calculation ENG-CS-278 re: components not included but cooled by CC water PROD00020210 Undated Owner's Review of Calculation ENG-CS-278, Rev.1, prepared by Amjid Qureshi PROD00020211 Undated memo re: Status of ODB000109 review of non-conforming condition of 40 components of CC System PROD00020212 Undated memo re: Status of ODB000109 review of non-conforming condition of 40 components of CC System-Calculation ENG-CS-278, Rev. 1 completed 8

Document Number Description PROD00020213 Undated memo re: Status of ODB000109 review of non-conforming condition of 40 components of CC System-Calculation ENG-CS-278, Rev. 1completed PROD00020214 11/17/2008 NRC Question Response Form re: CC system and HELB PROD00020215 2/2/2009 NRC Question Response Form re: SQUG submittal and equipment identified for safe PROD00020216 2/2/2009 NRC Question Response Form re: tornado loads on CC piping in Turbine Building PROD00020217 8/5/2009 Modification Classification re: CC lines to and from Cold Chemistry Lab PROD00020218 Undated Design Input Checklist -Part A re: EC 14668 includes CC system PROD00020219 Undated Design Input Checklist -Part B re: EC 14668 includes CC system PROD00020220 Undated Design Description Form re: EC 14668 CC System and Cold Chemistry Lab PROD00020221 5/26/2010 NRC Question Response Form re: consequence of HELB pipe wip in turbine building PROD00020222 Effect on cable trays in the turbine building due to HELB PROD00020223 Effect on cable trays in the turbine building due to HELB - Revision 2 PROD00020224 5/4/2010 G. Kvamme response to question re: effect on cable trays in the turbine building due to HELB PROD00020225 1/21/2009 e-mail from M. Davis to G. Kvamme re: summary of discussion with NRC re: 4th quarter inspection PROD00020226 6/15/2009 e-mail from K. Balakrishnan re: HELB / CC SDP PROD00020227 5/26/2010 NRC Question Response Form re: consequences of HELB pipe whip in turbine building PROD00020228 5/4/2010 e-mail from R. Rohrer to G. Kvamme re: HELB and cable trays in the turbine building PROD00020229 6/3/2010 e-mail from D. Malek to R. Dremel and others at Xcel re: NRC Response Form re: HELB piping on cable trays PROD00020230 5/26/2010 NRC Question Response Form re: HELB pipe whip impact on turbine building cable trays PROD00020231 5/13/2010 e-mail from G. Kvamme to L. Noonan re: vacuum box testing in re-fueling cavity PROD00020232 5/13/2010 summary of 2R26 vacuum box testing in unit 2 re-fueling cavity PROD00020233 Significance Determination Process Phase 3 re: 3/23/2008 and 7/31/2008 auxiliary feedwater pump malfunctions PROD00020234 V.SPA.08.0008, Addendum 1 Success of standby charging pump during loss of CC event.

PROD00020235 V.SPA.08.0008, Addendum 1 Success of standby charging pump during loss of CC event.

PROD00020236 V.SPA.08.0008, Addendum 1 Success of standby charging pump during loss of CC event.

PROD00020237 V.SPA.08.0008, Addendum 1 Success of standby charging pump during loss of CC event.

PROD00020238 Verification form for V.SPA.08.0008, Addendum 1 Success of standby charging pump during loss of CC event.

PROD00020239 RCP Seal LOCA graphs, PINGP loss of CCW due to HELB data PROD00020240 Evaluation to address past operability concerns for a cc line break in the gas house that is subject to tornados.

PROD00020241 21 CC Surge TANK LVL (in) data chart PROD00020242 V. SPA.08.008, Addendum 10 - 21 Component Cooling Water Surge Tank Level Calculation PROD00020243 Document verification form for V. SPA.08.008, Addendum 10 - 21 Component Cooling Water Surge Tank Level Calculation PROD00020244 Verification form for V. SPA.08.008, Addendum 11 - KNF HELB Pipe Failure Rates for the Prairie Island PRA PROD00020245 V. SPA.08.008, Addendum 12 - CC-HELB SDP Event Trees PROD00020246 V. SPA.08.008, Addendum 11 - CC-HELB SDP Event Trees PROD00020247 Document verification form for V. SPA.08.008, Addendum 12 - CC-HELB SDP Event Trees 9

Document Number Description PROD00020248 V. SPA.08.008, Addendum 12 - CC-HELB SDP Event Trees PROD00020249 Document verification form for V. SPA.08.008, Addendum 12 - CC-HELB SDP Event Trees PROD00020250 Document verification form for V. SPA.08.008, Addendum 12 - CC-HELB SDP Event Trees PROD00020251 01/30/2009 EPRI HRA Calculator 4.0 - OBRCPSTOPXY Operator fails to stop RCP's following a loss of component cooling and seal injection PROD00020252 01/30/2009 EPRI HRA Calculator 4.0 - OBRCPSTOPXY Operator fails to start charging pump to provide RCS makeup at reduced inventory PROD00020253 01/30/2009 EPRI HRA Calculator 4.0 - OBRCPSTOPXY Operator fails to start charging pump to mitigate RCP seal LOCA PROD00020254 01/30/2009 EPRI HRA Calculator 4.0 - OBRCPSTOPXY Operator fails to start charging pump to provide RCS Makeup at reduced inventory PROD00020255 Verification form for V.SPA.08.008 Addendum 13 - HRA for CC/HELB SDP PROD00020256 05/27/2009 Human Reliability Analysis to support significance determination process at PINGP PROD00020257 06/01/2009 NCR Question Response form PROD00020258 V.SPA.08.008, Addendum 2 - SDP Quantification PROD00020259 V.SPA.08.008, Addendum 2 - SDP Quantification PROD00020260 V.SPA.08.008, Addendum 2 - SDP Quantification PROD00020261 Document description log PROD00020262 Document verification form V.SPA.08.008 Addendum 2 - SDP Quantification PROD00020263 Document verification form V.SPA.08.008 Addendum 2 - SDP Quantification PROD00020264 Cutsets with descriptions report HELB-F PROD00020265 Cutsets with descriptions report - Tornado F PROD00020266 Cutsets with descriptions report Tornado F PROD00020267 11/21/2006 Reactor makeup system PROD00020268 09/16/2008 Alarm response procedure PROD00020269 03/01/2009 EPRI HRA Calculator 4.0 Operator Action Event Tree PROD00020270 04/032009 EPRI HRA Calculator 4.0 Human reliability analysis calculation note - significance determination process PROD00020271 02/27/2009 EPRI HRA Calculator 4.0 - Operator action event tree PROD00020272 Operator actions related to the water makeup system PROD00020273 RMW Tank Data PROD00020274 E-mail text to Laura re additional information related to the CC/HELB SDP PROD00020275 02/27/2009 - PINGP Component Cooling Water/Turbine Building Issue Risk Significance Summary of Xcel Analysis Performed PROD00020276 10/04/1995 - PINGP Calculation sheet for single failure analysis for the component cooling system PROD00020277 V.SPA.08.008 Addendum 3 - Success of Unit 2 Reactor Makeup Water System Following a Unit 1 HELB PROD00020278 V.SPA.08.008 Addendum 3 - Success of Unit 2 Reactor Makeup Water System Following a Unit 1 HELB PROD00020279 RMW Tank data 10

Document Number Description PROD00020280 RMW Tank data PROD00020281 V.SPA.08.008, Addendum 3 - Success of Unit 2 Reactor Makeup Water System Following a Unit 1 HELB PROD00020282 V.SPA.08.008, Addendum 3 - Success of Unit 2 Reactor Makeup Water System Following a Unit 1 HELB PROD00020283 V.SPA.08.008, Addendum 3 - Success of Unit 2 Reactor Makeup Water System Following a Unit 1 HELB PROD00020284 V.SPA.08.008, Addendum 4 External Event Fragilities for Seismic and Tornado Events PROD00020285 V.SPA.08.008, Addendum 4 External Event Fragilities for Seismic and Tornado Events PROD00020286 Photo Related to CC/HELB White Finding PROD00020287 Photo Related to CC/HELB White Finding PROD00020288 04/29/2009 Letter from W. Djordjevic at Stevenson & Associates to R. Best re RFP to support PI TB systems seismic risk analysis dated 04/24/2009 PROD00020289 03/15/2009 Email from J. Gehlhar to B. Horner, J. Ritter & R. Best re responses to question, CC HELB actions 28 & 29 PROD00020290 Ltdn T & VCT after loss of CC PROD00020291 3/23/2009 Verification for V.SPA.08.008 Addendum 5 VCT Simulator Case Study PROD00020292 Attachments 2, 3,4 for VCT report PROD00020293 V.SPA.08.008 Addendum 5, Volume control tank simulator case study PROD00020294 3/23/2009 Verification form for V.SPA.08.008 Addendum 5 - VCT Simulator Case Study PROD00020295 3/23/2009 Verification form for V.SPA.08.008 Addendum 5 - VCT Simulator Case Study PROD00020296 03/05/2009 NCR Question Response Form re Investigate the policies/procedures related to operations staffing during plant operation PROD00020297 V.SPA.08.008 Addendum 6 HELB Environment Affect on Operator Availability PROD00020298 4/3/2009 Verification form for V.SPA.08.008 Addendum 6, HELB Environment Affect on Operator Availability PROD00020299 Assumptions for EPRI heat stress analysis PROD00020300 3/21/2009 EPRI Heat Stress Analysis for CA 01093329-04 PROD00020301 3/21/2009 EPRI Heat Stress Analysis for CA 01093329-04 PROD00020302 EPRI NP-4453 Heat-Stress-Management Program for Nuclear Power Plants PROD00020303 AFW Successful, no steam generator cool down & depressurization graphs PROD00020304 Prairie Island MAAP 4.0.6 Analysis for CC/HELB SDP PROD00020305 RCP seal LOCA with loss of CC - analysis #2, scenario#1 PROD00020306 Tank Book PROD00020307 Case ECA 1.1: RCP Seal LOCA with loss of CCW. Transfer to ECA 1.1 and perform RCS depressurization and cool down.

PROD00020308 V.SPA.08.008, Addendum 7 MAAP Calculations for CC/HELB SDP PROD00020309 Verification formV.SPA.08.008 Addendum 7 - MAAP Calculations for CC/HELB SDP - Analysis #1 PROD00020310 Verification formV.SPA.08.008 Addendum 7 - MAAP Calculations for CC/HELB SDP - Analysis #2 PROD00020311 Summary of relevant conclusions for HELB and AES calculations PROD00020312 Design review comment form for AES Calculation PI-996-61-M01/ Evaluation of the effects of Jet Impingement on CC piping in the turbine building.

11

Document Number Description PROD00020313 External design document suitability review checklist for evaluation of the effects of Jet Impingement on CC piping in the turbine building PROD00020314 Letter from Kari Den Herder to Jayne re response to questions for HELB lines identified in the 11/05/2008 NRC Information request PROD00020315 HELB Piping - Jet Impingement Damage PROD00020316 04/13/2009 Engineering Change re HELB line cracks PROD00020317 Unit 1 -HELB Piping - Pipe Whip Damage Only PROD00020318 Unit 1 HELB Piping - Pipe Whip Damage Only PROD00020319 Units 1 and 2 HELB Piping data PROD00020320 Verification form for V.SPA.08.008 Addendum 8 - Part 2 - HELB Pipe Break Frequency Calculation PROD00020321 HELB Piping data PROD00020322 Unit 1&2 pipe break calculations PROD00020323 Pipe break calculation data for Units 1&2 PROD00020324 Documentation of all interactions between high energy piping and cooling water that also affect component cooling PROD00020325 chart - rupture frequency data PROD00020326 rupture frequency data PROD00020327 Verification form for V.SPA.08.008 Addendum 8 - HELB pipe break frequency calculation PROD00020328 03/31/2009 Job Performance Measure re Switch Reactor Makeup Tanks on Degas PROD00020329 11/03/2008 Switchover to recirculation per 2ES-1.2, Attachment K PROD00020330 04/24/2008 Simulator Exercise Guide, CC HELB Scenario PROD00020331 V.SPA.08.008, Addendum 9 Operator Walkdowns and Simulator Runs for Component Cooling Piping Interaction With Turbine Building HELB Piping Significance Determination Process PROD00020332 Table 1- Preliminary Simulator CC/HELB Scenario - 04/10/2009 PROD00020333 Table 4 - Preliminary Simulator CC/HELB Scenario - 04/29/2009 PROD00020334 Table 5- Preliminary Simulator CC/HELB Scenario - 05/06/2009 PROD00020335 Verification form for V.SPA.08.008 - Addendum 9, Operator walkdowns and simulator runs for CC/HELB SDP PROD00020336 Component Cooling System Interaction with TB HELB Piping data PROD00020337 Table of HELB piping at PINGP.

PROD00020338 Preliminary analysis of HELB in turbine building.

PROD00020339 Analysis related to CC/HELB SDP issue at PINGP.

PROD00020340 Component Cooling Piping Interaction with Turbine Building HELB Piping Significance Determination Process.

PROD00020341 2/16/2009 email from D. Warner to T. Verbout and others at Xcel regarding CC design issues.

PROD00020342 Memo addressing CC scenarios at PINGP.

PROD00020343 Questions related to CC scenarios at PINGP.

PROD00020344 Question and response regarding CC system at PINGP.

PROD00020345 1/20/2009 email from B. Horner to M. Loosbrock regarding valves in CC HELB issue at PINGP.

PROD00020346 Calculation of time to drain CC surge tank at PINGP.

12

Document Number Description PROD00020347 11/5/2008 NRC question response form regarding CC system at PINGP.

PROD00020348 Write-up by B. Slack of information contained in turbine building HELB calculations relevant to CC / HELB SDP.

PROD00020349 2/6/2009 email from B. Horner to J. Kempkes regarding CC piping interaction questions.

PROD00020350 2/6/2009 email from B. Horner to J. Kempkes regarding HELB / CC piping interactions at PINGP.

PROD00020351 2/10/2009 email from B. Horner to J. Ritter regarding HELB / CC piping interactions at PINGP.

PROD00020352 Calculation of draindown time for CC surge tank after CC rupture.

PROD00020353 Calculation of draindown time for CC surge tank after CC tubing rupture.

PROD00020354 Analysis including details about HELB / CC interaction in turbine building.

PROD00020355 3/8/2009 Memo from S. Northard to D. Malek regarding CC piping near HELB location.

PROD00020356 3/9/2009 Memo from S. Northard to D. Malek regarding CC piping near HELB location in turbine building.

PROD00020357 4/30/2009 Memo from K. Ryan to D. Malek regarding CC piping near HELB location in turbine building.

PROD00020358 4/30/2009 Memo from K. Ryan to D. Malek regarding CC piping near HELB location in turbine building.

PROD00020359 3/6/2009 Memo from S. Northard to B. Horner regarding CC piping near HELB location in turbine building.

PROD00020360 5/1/2010 action request identification regarding HELB event.

PROD00020361 CC / HELB SDP external resource costs.

PROD00020362 8/25/1985 work request for CC surge tank.

PROD00020363 5/1990 calculation sheet for simulated single failure in CC system at PINGP.

PROD00020364 7/17/2009 NRC question response form addressing CC surge tanks at PINGP.

PROD00020365 Operability recommendation for CC piping in turbine building.

PROD00020366 2/13/2009 letter from MPR to B. Horner regarding operation during postulated HELB in turbine building.

PROD00020367 50.59 screening for RMU flow to CC surge tank at PINGP.

PROD00020368 1/12/2009 email from M. Huting to M. Schimmel regarding action plan for turbine building HELB / CC SDP.

PROD00020369 4/14/2009 Turbine Building CC SDP Issue: RMU Success Path Continued Viability.

PROD00020370 1/9/2009 email from J. Ritter to B. Horner summarizing CC / HELB discussion with NRC.

PROD00020371 1/10/2006 PI manual titled Loss of Component Cooling PROD00020372 3/17/2009 analysis of CC lines in turbine building by AES, Corp.

PROD00020373 3/17/2009 analysis of CC lines in turbine building.

PROD00020374 3/23/2009 External Design Document Suitability Review Checklist regarding pipe stress analysis.

PROD00020375 3/13/2009 evaluation of effects of jet impingement on CC piping in turbine building.

PROD00020376 3/13/2009 evaluation of effects of jet impingement on CC piping in turbine building.

PROD00020377 11/5/2008 NRC question response form regarding, inter alia, high energy pipes' interaction with CC system at turbine building.

PROD00020378 12/10/2003 PI procedure manual titled High Energy Line Break/Leak PROD00020379 5/3/2008 simulator runs regarding HELB piping at PINGP.

PROD00020380 4/2009 report on HELB pipe failure rates for PINGP prepared by KNF Consulting Services PROD00020381 CCHELB affect on opposite unit RMUP breakers including diagrams PROD00020382 3/13/2009 Email from S. Roberto to D. Butwin re HELB/CC SDP Action 13

Document Number Description PROD00020383 3/12/2009 Report prepared by Advent - Prairie Island Turbine Building 695' Elevation HELB Temperature & Relative Humidity Sensitivity Study PROD00020384 3/11/2009 Email from J. Ritter to W. Scholberg cc R Mella and others re Flooding Impact on 695' Level Turbine Due to a Unit 1 HELB Line Break PROD00020385 3/2/2009 Email from J. Ritter to R. Mella, R. Whitlock with M. Brossart cc'd re RMU System equipment qualification summary info PROD00020386 4/8/2009 Email from S. Roberto to R. Mella with R. Whitlock cc'd re Turbine building HELB / CC SDP update PROD00020387 1/31/2007 Email from R. Hansen to D. Schiro with R. Mella & P. Zamarripa cc'd re Actions for design basis flood PROD00020388 3/7/2006 Transformer External flood Evaluation at Elevation 698'0", Revision 1, prepared by Automated Engineering Services PROD00020389 Root Cause Evaluation Charter: Potential Error in Flooding level for declaring a Site Area Emergency PROD00020390 Report on Steps taken to achieve Mode 5 during a site flooding event PROD00020391 1/26/2007 Email from M. Davis to M. Meyer with others cc'd re flooding EAL change PROD00020392 4/10/2006 Email from P. Huffman to all PINGP management and supervisors re Flooding EAL final determination PROD00020393 1/18/2006 Abnormal Procedure: Flood PROD00020394 2/27/2006 Transformer External Flood Evaluation at Elevation 698'0", Revision 0, prepared by Automated Engineering Services PROD00020395 3/1/2006 NRC Regulatory Conference on the Non-Conservative EAL for Flooding, Questions & Follow-up items PROD00020396 3/2/2006 Email from S. Northard to multiple PINGP employees re NRC regulatory conference on the NON PROD00020397 2/19/2006 Transformer External Flood Evaluation at Elevation 698'0", Final, prepared by Automated Engineering Services, marked up copy PROD00020398 2/27/2006 Transformer External Flood Evaluation at Elevation 698'0", Final, prepared by Automated Engineering Services PROD00020399 Report on Transformer Flooding Evaluation PROD00020400 1/26/2007 Email from M. Meyer to M. Davis with R. Mella, R. Hansen & R. Zyduck cc'd re Flooding EAL change PROD00020401 12/12/1972 letter from Atomic Energy Commission to A. Dienhart regarding Request for Additional Information on steam pipe break PROD00020402 2/23/2009 Letter from D. Kettering to Engineering Department regarding change to corrective actions process PROD00020403 Unit 2 Flood Levels Graph and extensive Chart PROD00020404 Unit 2 Flood Levels Graph and Chart PROD00020405 6/12/2009 letter from G. Hostetter to D. Potter regarding turbine building gothic model as developed and designed verified as of June 1, 2009 - PINGP Calculation Inputs to Turbine Building Gothic Model for HELB Analysis PROD00020406 Evaluation to determine environmental effects of turbine HELB and Component Cooling line interactions with design break locations PROD00020407 12/18/1972 Letter from Atomic Energy Commission to A. Dienhart regarding reactor power plant safety and pipe failures including rupture of feedwater line and documents attached thereto PROD00020408 HELB Independent Review Outline 14

Document Number Description PROD00020409 Notes on internal flooding event as result of feedwater line break PROD00020410 CAP/ Flooding Flow Chart PROD00020411 6/2004 Focused Self Assessment of Internal Flooding Program (Final Report)

PROD00020412 Letter from Office of Nuclear Reactor Regulation to L. Gessick regarding status and future use of single failure criterion as a tool in the reactor safety review process PROD00020413 2009 CC HELB Evaluation and flooding issues power point PROD00020414 Flow Chart regarding Corrective Actions PROD00020415 12/11/2001 Diagram of Feedwater Unit 1 PROD00020416 6/5/2009 Prairie Island Nuclear Generating Plant Component Cooling Water/ Turbine Building SDP Issue Risk Significance Summary of Xcel Energy Analysis Performed PROD00020417 6/4/2004 email from R. Best to J. Ritter and others at Xcel regarding CC- HELB PROD00020418 6/5/2009 Prairie Island Nuclear Generating Plant Component Cooling Water/ Turbine Building SDP Issue Risk Significance Summary of Xcel Analysis Performed PROD00020419 5/20/2009 email from R. Best to D. Potter regarding CC piping locations PROD00020420 email from R. Best to M. Huting and others at Xcel regarding turbine building gothic and cc-Help internal flooding PROD00020421 Identification of CC Line Damage Mechanisms in Turbine Building- Outline PROD00020422 6/5/2009 email from R. Best to D. Potter regarding feedwater HELB affecting CC PROD00020423 5/19/2009 email from R. Best to R. Roher regarding comments and options regarding SDP PROD00020424 6/5/2009 Prairie Island Nuclear Generating Plant Component Cooling Water / Turbine Building SDP Issue Risk Significance Summary of Xcel Energy Analysis Performed PROD00020425 Prairie Island Nuclear Generating Plant Component Cooling Water/ Turbine Building SDP Issue Risk Significance Summary of Xcel Energy Energy Analysis is Performed PROD00020426 5/25/2009 email from J. Ritter to R. Best and others at Xcel regarding environmental conditions in the turbine building following HELB PROD00020427 Identification of CC Line Damage Mechanisms in Turbine Building : Outline PROD00020428 6/5/2009 email from J. Ritter to D. Malek and R. Best regarding comments to CC-HELB report, round 3.

PROD00020429 6/5/2009 Prairie Island Nuclear Generating Plant Component Cooling Water/ Turbine Building SDP Issue Risk Analysis Summary of Xcel Analysis Performed PROD00020430 6/5/2009 Prairie Island Nuclear Generating Plant Component Cooling Water/ Turbine Building SDP Issue Risk Analysis Summary of Xcel Analysis Performed PROD00020431 Evaluation of Flooding Due to Turbine Building HELB: Outline PROD00020432 Notes on inputs needed to assess effects of internal flooding event as a result of feedwater line break PROD00020433 7/4/2009 email from J. Ritter to R. Rohrer regarding simulator exercise test run for flood impacts PROD00020434 7/4/2009 email from J. Ritter to R. Rohrer regarding sensitivity cases performed to determine impact on flooding contribution to CC/HELB risk assessment PROD00020435 Sensitivity Results with AFW Pump Room Flood Impacts on Equipment PROD00020436 7/10/2009 email from B. Slack to D. Potter and others at Xcel regarding flooding mitigation options 15

Document Number Description PROD00020437 PINGP Calculation Inputs to Turbine Building Gothic Model for HELB Analysis PROD00020438 6/2/2009 letter from E. Bird at MPR Associates Inc. to B. Slack regarding high energy line break configurations in turbine building with calculation of feedwater line velocity; finite element analysis of feedwater line HELB PROD00020439 7/9/2009 email from B. Slack to J. Ritter regarding stress analysis on FW/ CC/ CL interaction PROD00020440 5/26/2009 email from B. Slack to W. Scholberg regarding HELB / CL case definitions and interactions to be evaluated for the SDP PROD00020441 7/8/2009 email from B. Slack to D. Potter regarding crack in valve of body regarding CC/HELB jet impingement issue PROD00020442 Diagram of Feedwater Unit 1 PROD00020443 5/13/2009 Design Information Transmittal from B. Slack to G. Geaney regarding HELB Flood and high energy pipes PROD00020444 5/13/2009 Design Information Transmittal from B. Slack to G. Geaney regarding HELB Flood high energy pipes PROD00020445 3/20/2009 Calculation Sheet regarding evaluation of the effects of jet impingement on component cooling piping in the turbine building PROD00020446 Documents related to "internal flooding" in the Prairie Island Licensing Basis PROD00020447 Prairie Island CCHELB Direction Power Point PROD00020448 Internal Flood Design Deficiencies document PROD00020449 Prairie Island CCHELB / Flooding Program Direction power point presentation PROD00020450 5/7/2009 email from M. Huting to M. Reddemann and R. Best and others at Xcel regarding HELB causing plastic deformation PROD00020451 5/26/2009 email from M. Huting to D. Potter regarding flooding program reconstitution PROD00020452 4/29/2009 letter from W. Djordjevic at Stevenson & Associates consulting engineering firm to R. Best regarding a proposal to assess and develop seismic and Tornado-induced flooding fragilities for turbine structures PROD00020453 5/1/2009 email from M. Huting to B. Slack regarding an independent review of HELB work related to CCHELB SDP efforts PROD00020454 5/4/2009 email from M. Huting to D. Potter regarding flooding analysis in Turbine building PROD00020455 11/7/2005 US NRC Office of Nuclear Reactor Regulations document regarding safe potentially challenged by unanalyzed internal flooding events and inadequate design PROD00020456 6/3/2009 email from M. Huting to R. Best and others at Xcel regarding Jet impingement PROD00020457 5/20/2009 email from M. Huting to D. Potter regarding internal flood overall recovery layout PROD00020458 7/22/2009 email from M. Huting to J. Anderson regarding management flooding update and schedule for regulatory recovery PROD00020459 White Paper for CC HELB Outcome and Continued Efforts PROD00020460 White Paper for CCHELB Outcome and Continued Efforts PROD00020461 White Paper for CCHELB Outcome and Continued Efforts PROD00020462 7/10/2009 letter from S. Kinsey to D. Potter regarding Proposal to Provide Engineering Support for Turbine Building Roll-up Door Modifications to address Potential Flooding Issues PROD00020463 5/26/2009 email from S. Kinsey to M. Hopman regarding PINGP transient flooding spreadsheet and discussion of results on spreadsheet 16

Document Number Description PROD00020464 Prairie Island Nuclear Generating Plant Component Cooling Water / Turbine Building SDP Issue Risk Significance Summer of Xcel Energy Analysis Performed PROD00020465 6/5/2009 Prairie Island Nuclear Generating Plant Component Cooling Water / Turbine Building SDP Issue Risk Significance Summer of Xcel Energy Analysis Performed PROD00020466 6/5/2009 email from D. Malek to J. Ritter regarding CC-HELB Report and comments thereto PROD00020467 6/5/2009 Prairie Island Nuclear Generating Plant Component Cooling Water / Turbine Building SDP Issue Risk Significance Summer of Xcel Energy Analysis Performed PROD00020468 6/10/2009 email from D. Malek to D. Potter regarding timeline for analysis for CC-HELB PROD00020469 6/10/2009 Summary of Xcel Discussion with NRC PROD00020470 7/6/2009 email from D. Malek to D. Potter regarding simulator exercise to support CC-HELB PROD00020471 6/18/2009 memorandum from D. Malek to K. Ryan regarding piping adjacent to HELB location in turbine building PROD00020472 8/15/2006 document regarding plant flooding procedure PROD00020473 7/6/2009 email from S. Northard to D. Potter regarding turbine building flooding analysis PROD00020474 6/30/2009 Email from D. Potter to S. Ford re: contract mod work on 12 CL line PROD00020475 Notice of 5/11/2009 meeting re: laying out a recovery path for internal flooding of the turbine building PROD00020476 Diagram of 10" forced displacement of 12-CL-67 near 16" FW line PROD00020477 Flow rates from postulated break sizes in CL system and Fire Protection sprinkler actuation.

PROD00020478 GOTHIC Control volumes corresponding to physical compartments/rooms in the plant.

PROD00020479 Mass of water in steam generators, condensate and feedwater piping system PROD00020480 7/8/2009 Email from D. Potter to D. Malek re: time to trip circ water pumps for full 12 CL line break PROD00020481 4/20/2009 PINGP Evaluation: Limiting Time for Operator Action to Mitigate Flooding Effects from a Postulated Feedwater Condensate System High Energy Line Break in Unit 1 PROD00020482 Various analyses of the effects of an internal flooding event as a result of a feedwater line break which targets the CC line have been rough drafted but not finalized and preliminary results have been reached.

PROD00020483 7/8/2009 Email from D. Potter to R. Rohrer re: the plastic hinge location on the feedwater pipe and possible affect on CC line PROD00020484 Table showing Saturated H20 Properties PROD00020485 Evaluation to determine environmental effects of a turbine HELB in support of the Significance Determine Process associated with the Component Cooling line interactions with design break locations from the feedwater system.

PROD00020486 5/26/2009 Email from D. Potter to C. Lethgo re: flow rate analysis of fire line breaks in the turbine building PROD00020487 Notice of 5/15/2009 meeting to discuss the flow of information needed for internal flood support.

PROD00020488 5/21/2009 Email from D. Potter to C. Sansome re: update on CL HELB break preliminary results PROD00020489 5/21/2009 Email from D. Potter to D. Potter re: discussion with management about proposal for CC-HELB expanded scope deliverable date to NRC PROD00020490 6/10/2009 Email from D. Potter to D. Malke and R. Rohrer re: current schedule for internal flood recovery.

PROD00020491 6/5/2009 Email from D. Potter to W. Scholberg re: time it will take for a feedwater HELB causing 6" CL line break to cause issues 17

Document Number Description PROD00020492 6/12/2009 Email from D. Potter to B. Slack re: time to critical height due to flooding in the Unit 1 TB PROD00020493 6/8/2009 email from D. Potter to D. Malke and others re: times to reach critical heights in safeguards rooms PROD00020494 Preliminary data re: times to reach critical heights in safeguards rooms PROD00020495 7/2/2006 email from D. Potter to T. Vogel re: turbine oil cooler nozzle loads due to a 10" forced displacement at point 135 PROD00020496 Table of Turbine Oil Cooler Nozzle Loads PROD00020497 Blueprint/Drawing of Cooling Water 6" Single Support Assembly PROD00020498 Blueprint/Drawing of Cooling Water 6" Single Rigid Hanger Assembly PROD00020499 Blueprint/Drawing of (Turbine Room) Cooling Water 12" Single Rigid Hanger Assembly PROD00020500 Blueprint/Drawing of Cooling Tower (Turbine Room) 12" Single Rigid Hanger Assembly PROD00020501 Blueprint/Drawing of Cooling Water Turbine Room 12"x12"x10" Tee Limit Stop PROD00020502 5/26/2009 Email from D. Potter to B. Slack re: GOTHIC installation discs PROD00020503 7/7/2009 Email from D. Potter to B. Slack re: CC lines not affected by the terminal end break at the feedwater heater PROD00020504 5/20/2009 Email from D. Potter to W. Scholberg re: inputs for flooding approved.

PROD00020505 Evaluation to provide input on flooding rates in the turbine building during certain postulated HELB events for the HELB Safety Determination Process.

PROD00020506 5/14/2009 Email from D. Potter to C. Sansome re: date to receive analysis on flow rates by Proto-Power.

PROD00020507 5/19/2009 Email from D. Potter to M. Huting re: whether a feedwater HELB will result in a safety injection signal making the CC system single failure proof.

PROD00020508 Flow chart laying out the elements required to recover the internal flooding program at PINGP.

PROD00020509 6/09/2009 Email from D. Potter to M. Huting re: major milestones of internal flood recovery to present to NRC PROD00020510 Flow chart laying out the elements required to recover the internal flooding program at PINGP.

PROD00020511 5/26/2009 Email from D. Potter to S. Kinsey re: internal flooding analysis and other possible work for MPR on HELB issues PROD00020512 6/30/2009 Email from D. Potter to M. Huting re: internal flooding modification proposals PROD00020513 Notice of 6/8/2009 meeting re: overall recovery program for the internal flooding program.

PROD00020514 5/7/2009 Email from D. Potter to B. Slack re: jet impingement for subcooled systems.

PROD00020515 Analysis of jet impingement for subcooled systems PROD00020516 5/26/2009 Email from D. Potter to S. Skoyen re: arranging for AES to perform a Jet Impingement analysis.

PROD00020517 5/12/2009 meeting to finish the internal discussion amongst Xcel Energy personnel resulting from the 5/11/09 conference call on CCHELB.

PROD00020518 5/14/2009 Email from D. Potter to B. Slack re: time estimate to receive various pipe whip analysis from MPR.

PROD00020519 5/26/2009 Email from D. Potter to B. Slack and W. Scholberg re: NRC considered a checkvalve failure to be a passive single failure PROD00020520 NRC Information Report re: Single Failure Criterion PROD00020521 5/01/2009 Email from D. Potter to M. Hugin re: evaluation of pipe whip PROD00020522 Portion of Monticello Updated Safety Report re: evaluation of the effect of pipe whip on safe components and structures 18

Document Number Description PROD00020523 List: 1.6 References PROD00020524 Quote re: unrestrained whipping pipe PROD00020525 Quote re: whipping pipe PROD00020526 List: 21. Nuclear Services Corporation, Topical Reports PROD00020527 Quote: 1.5.2 Pipe Whip PROD00020528 Calculations for Momentum flux, Momentum change, and Pressure force PROD00020529 5/12/2009 Email from D. Potter to R. Rohrer and others re: talking points for CCHELB PROD00020530 Prairie Island CCHELB Direction talking point slides PROD00020531 7/8/2009 Email from D. Potter to B. Slack re: whether to include analysis of jet impingement from a valve body in CC/HELB analysis PROD00020532 7/7/2009 Email from D. Potter to B. Slack re: whether to include analysis of jet impingement from a valve body in CC/HELB analysis PROD00020533 6/5/2009 Email from D. Potter to D. Malek re: comments about draft CC-HELB report PROD00020534 6/5/2009 Email from D. Patter to J. Ritter and others re: comments about draft CC-HELB report PROD00020535 5/7/2009 Email from D. Potter to M. Huting re: comments about draft CC-HELB PowerPoint slides PROD00020536 5/26/2009 Email from D. Potter to R. Jones re: check valve single failure criteria PROD00020537 5/21/2009 Email from D. Potter to C. Sansome re: question of where to find system training documents and receipt of preliminary CL HELB break results from Proto-Power PROD00020538 6/12/2009 Email from D. Potter to M. Hopman re: communication of Internal Flooding timelines PROD00020539 6/30/2009 Email from D. Potter to S. Ford re: contract mod work PROD00020540 5/26/2009 Email from D. Potter to W. Scholberg re: questions about flooding calculation inputs involving fire protection flows, D1/D2 trench, and check valves PROD00020541 5/4/2009 Email from D. Potter to M. Huting re: 2004 Self Assessment about need for flooding analysis in turbine and auxiliary buildings PROD00020542 5/20/2009 Email from D. Potter to M. Huting re: sump pump effectiveness against internal flooding PROD00020543 7/1/2009 Email from D. Potter to M. Huting re: pursuing modifications against internal flooding PROD00020544 6/8/2009 Email from D. Potter to M. Hopman re: internal flooding recovery strategy schedule first draft ready for NRC presentation PROD00020545 5/19/2009 Email from D. Potter to C. Sansome re: Proto-Power flow rate analysis timeline.

PROD00020546 6/11/2009 Email from D. Potter to D. Malek re: summary of NRC CC/HELB conference call on 6/10/09 and assigned responders PROD00020547 5/26/2009 Email from D. Potter to B. Slack and W. Scholberg re: application of single failure criteria to check valves PROD00020548 5/27/2009 Email from D. Potter to B. Slack and W. Scholberg re: application of single failure criteria to check valves in HELB analysis PROD00020549 5/26/2009 Email from D. Potter to W. Scholberg re: the difference between design and significance determinations when considering equipment failure and single failure criteria PROD00020550 7/6/2009 Email from D. Potter to D. Malek re: CC/HELB Simulator Exercise 19

Document Number Description PROD00020551 5/7/2009 Email from D. Potter to R. Best re: meeting with NRC resident(s) about question regarding licensing basis for internal flooding.

PROD00020552 5/7/2009 Email from D. Potter to R. Best re: meeting with NRC resident(s) about question regarding licensing basis for internal flooding.

PROD00020553 6/3/2009 Email from D. Potter to D. Malek re: expected flow rate from sprinklers in Unit 1 PROD00020554 5/20/2009 Email from D. Potter to C. Koehler re: Turbine Building sump pumps PROD00020555 5/20/2009 Email from D. Potter to C. Koehler re: Turbine Building sump pumps PROD00020556 5/18/2009 Email from D. Potter to C. Sansome and K. DenHerder re: thoughts on flow rates on the CL system via open system inspections.

PROD00020557 5/18/2009 Email from D. Potter to K. DenHerder re: thoughts on flow rates on the CL system via open system inspections.

PROD00020558 5/18/2009 Email from D. Potter to K. DenHerder re: thoughts on flow rates on the CL system via open system inspections.

PROD00020559 6/11/2009 Email from D. Potter to W. Scholberg re: time to critical height due to flooding in Unit 1 Turbine Building.

PROD00020560 6/11/2009 Email from D. Potter to W. Scholberg re: time to critical height due to flooding in Unit 1 Turbine Building.

PROD00020561 7/5/2009 Email from D. Potter to T. Vogel re: Turbine Oil Cooler Nozzle Loads due to a 10" forced displacement at Point 135.

PROD00020562 Blueprint/Drawing of Feedwater Unit 1 PROD00020563 6/5/2009 Email from D. Potter to W. Scholberg re: mass flow on heat balance diagram found in USAR PROD00020564 5/13/2009 Email from D. Potter to M. Schimmel re: SDP discussion with NRC about extending deadline for CCHELB evaluation.

PROD00020565 Outline of information needed to provide Evaluation of Flooding due to Turbine Building HELB PROD00020566 Chart re: Break Up Stream of 15 FW Heater and 6/10/09 GOTHIC Table TB-base-TEMP over time PROD00020567 7/08/2009 GOTHIC Table TB-base-RHUM over time PROD00020568 5/18/2009 Email from D. Potter to K. DenHerder re: thoughts on flow rates on the CL system via open system inspections PROD00020569 7/02/2009 Email from D. Potter to S. Northard and M. Schimmel re: brief description of analysis of turbine building flooding PROD00020570 Notice of weekly recurring meetings re: Turbine Building Internal Flood Status and Direction PROD00020571 Notice of 5/12/2009 meeting re: laying out a recovery path for internal flooding for the turbine building.

PROD00020572 7/2/2009 Email from R. Rohrer to D. Potter re: Turbine Oil Cooler Nozzle Loads due to a 10" forced displacement at Point 135 PROD00020573 5/20/2009 Chart entitled CC-HELB SDP Option 1 PROD00020574 5/20/2009 Chart entitled CC-HELB SDP Option 2 PROD00020575 6/1/2009 Email from R. Rohrer to J. Anderson and D. Potter re: milestones for internal flooding analysis PROD00020576 6/1/2009 Email from R. Rohrer to R. Best and others re: milestones for internal flooding analysis PROD00020577 5/20/2009 Chart entitled CC-HELB SDP Option 1 20

Document Number Description PROD00020578 5/20/2009 Chart entitled CC-HELB SDP Option 2 PROD00020579 5/13/2009 Email from R. Rohrer to D. Potter re: Prairie Island CCHELB Direction PowerPoint talking points PROD00020580 8/19/2009 Email from G. Salamon to D. Potter and R. Rohrer re: Internal Flooding licensing basis white paper for NRC PROD00020581 8/20/2009 Email from G. Salamon to D. Potter re: Internal Flooding licensing basis white paper PROD00020582 NRC Inspection and Enforcement Manual Temporary Instruction 2515/88: Inspection of Licensee's Actions Taken to Implement NRC Guidelines for Protection from Flooding of Equipment Important to Safety PROD00020583 8/19/2009 Email from G. Salamon to D. Potter re: Internal flooding licensing basis white paper PROD00020584 8/19/2009 Email from G. Salamon to D. Potter re: Internal Flooding licensing basis white paper PROD00020585 5/21/2009 Email from C. Sansome to D. Potter and others re: timeline for CL HELB break results from Proto-Power PROD00020586 5/29/2009 Email from C. Sansome to D. Potter and others re: CL-HELB break flow analysis from Proto-Power completed.

PROD00020587 5/21/2009 Email from C. Sansome to D. Potter re: system training documents to be found on J drive or in Sharepoint PROD00020588 ESP Systems P7540L course lists PROD00020589 5/15/2009 Email from C. Sansome to D. Potter re: Internal Flooding volume contribution flow rate analysis results from Proto-Power PROD00020590 5/19/2009 Email from C. Sansome to D. Potter re: Internal Flooding volume contribution Proto-Power timeline PROD00020591 5/19/2009 Email from C. Sansome to D. Potter re: Internal Flooding volume contribution Proto-Power timeline PROD00020592 5/28/2009 Email from C. Sansome to D. Potter and others re: summary of Proto-Power's preliminary results of analysis of CL system with the HELB breaks PROD00020593 5/18/2009 Email from C. Sansome to K. DenHerder and D. Potter re: thoughts on flow rates on the CL system via open system inspections.

PROD00020594 5/18/2009 Email from C. Sansome to D. Potter and K. DenHerder re: thoughts on flow rates on the CL system via open system inspections.

PROD00020595 5/22/2009 Email from C. Sansome to D. Potter and others re: summary of Proto-Power's preliminary results of analysis of CL system with the HELB breaks.

PROD00020596 Scenarios of crack or break flows based on different base system alignment PROD00020597 5/26/2009 Email from W. Scholberg to D. Potter re: new assignment making flooding calculations second priority PROD00020598 12/18/1995 Calculation number ENG-ME-221 to determine the largest amount of liquid available to flood the Auxiliary Building.

PROD00020599 Prairie Island FW Break Flow, Project No: 08960-031, Calculation No: 1998-04320, page 48 Attachments re: pump performance curves, loss coefficients, cell formulae and miscellaneous references PROD00020600 Prairie Island FW Break Flow, Project No: 08960-031, Calculation No: 1998-04320, Rev. 1, to determine the bounding volumetric flow rate and its associated event profile for an instantaneous circumferential line break in the feedwater system at either Unit 1 or Unit 2 PROD00020601 5/26/2009 Email from W. Scholberg to D. Potter re: need flooding calculation inputs for fire protection flows and D1/D2 ventilation trenches.

21

Document Number Description PROD00020602 8/5/2009 Email from W. Scholberg to M. Hopman and D. Potter re: MPR and GOTHIC model can be completed by the end of August.

PROD00020603 5/13/2009 Email from W. Scholberg to D. Potter re: draft version of an independent review of the Flooding evaluation.

PROD00020604 5/7/2009 Independent Review of Evaluation for Operator Response Times for Turbine Building Internal Flooding -

PINGP PROD00020605 5/6/2009 Email from W. Scholberg to D. Potter re: status update on review of draft evaluation limiting time for operator action to mitigate flooding PROD00020606 Spreadsheets detailing Turbine Building flood level scenarios PROD00020607 5/13/2009 Email from W. Scholberg to S. Kinsey re: draft version of an independent review of the flooding evaluation.

PROD00020608 5/26/2009 Email from W. Scholberg to D. Potter re: operability of D1/D2 generators if ventilation is lost due to flooding of the D1/D2 trench PROD00020609 6/5/2009 Email from W. Scholberg to D. Potter re: time to flood to the top of the pit if feedwater HELB causes a full 6" CL line break PROD00020610 5/26/2009 Email from W. Scholberg to D. Potter re: single failure criteria applied to passive checkvalve failure.

PROD00020611 5/26/2009 Email from W. Scholberg to D. Potter re: single failure criteria applied to passive checkvalve failure.

PROD00020612 1/11/1973 letter from US Atomic Energy Commission re: clarification of guidelines and criteria regarding a postulated break in a pipe carrying a high-energy fluid.

PROD00020613 1/18/1973 letter from Pioneer Service and Engineering Co re: minutes of meeting with AEC staff regarding high energy line rupture PROD00020614 6/11/2009 Email from W. Scholberg to D. Potter and B. Slack re: time to critical height due to flooding in the Unit 1 Turbine Building PROD00020615 6/12/2009 Email from W. Scholberg to D. Potter re: time to critical height due to flooding in the Unit 1 Turbine Building PROD00020616 5/28/2009 Email from W. Scholberg to D. Potter re: desire for meaningful due dates to assigned Corrective Actions.

PROD00020617 List of Corrective Actions assigned to W. Scholberg PROD00020618 5/28/2009 Email from W. Sholberg to D. Potter re: preparing the Design Interface Agreement for the MPR GOTHIC flooding analysis.

PROD00020619 Spreadsheets detailing Turbine Building flood level scenarios PROD00020620 6/11/2009 Email from W. Scholberg to B. Slack re: table giving preliminary calculation of time to critical height due to flooding in the Unit 1 turbine building.

PROD00020621 3/16/2009 Email from J. Gehlhar to B. Horner, J. Ritter & R. Best re responses to questions about CC HELB PROD00020622 4/6/2009 Email from R. Best to D. Malek & S. Skoyen w/ B. Horner & W. Hadeka cc'd re Action 48 & 48a in regard to HELB PROD00020623 3/13/2009 Email from M. Smutny to D. Malke and others at PINGP re Actions 51 & 25b and planning for HELB event PROD00020624 5/9/2009 Email from R. Best to S. Skoyen with others cc'd re Additional need for S&A evaluation of Gas House structure PROD00020625 5/1/2009 Email from R. Best to M. Schimmel and others at PINGP re Agenda for management update on HELB SDP Issues 22

Document Number Description PROD00020626 PINGP CCHELB / Flooding Program Direction PowerPoint PROD00020627 5/4/2009 Email from J. Grobbelaar with Curtiss-Wright to J. Ritter w/ R. Best & J. Julius cc'd re Charging pump cavitation PROD00020628 2/20/2009 Request for Phased Approval: CC HELB interaction structural analysis PROD00020629 1/6/2009 Significance Determination Process (SDP) Questions Component Cooling Line Interaction with HELB Piping in the Turbine Building PROD00020630 3/13/2009 Email from R. Best to B. Horner with others cc'd re CC line to Gas House PROD00020631 5/10/2009 Email from J. Ritter to D. Malek & R. Best re CC surge tank level calculation PROD00020632 Report on 21 Component Cooling Water Surge Tank Level Trend PROD00020633 3/12/2009 Email from J. Ritter to W. Hadeka with D. Malek & R. Best cc'd re CC/HELB action #48 PROD00020634 3/13/2009 Email from J. Ritter to T. Borgen with R. Best & D. Malek cc'd re CC/HELB Critical Operator Action: Realign AFW Suction from CST to Cooling Water (New Action related to #12)

PROD00020635 5/15/2009 Email from R. Best to M. Reddemann with others cc'd re CC-HELB current ICDP value, without internal flooding PROD00020636 5/9/2009 Email from R. Best to J. Ritter & D. Malek re CC-HELB report outline PROD00020637 2/26/2009 Email from J. Ritter to R. Best re CC/HELB Scenario Description PROD00020638 3/19/2009 Email from J. Ritter to J. Grobbelaar with others cc'd re CC/HELB SDP - Additional Support for HEPs PROD00020639 4/10/2009 observations and notes re: CC/HELB simulator run PROD00020640 3/10/2009 memo from Dave Malek to Scott Northard re: CC piping adjacent to HELB and component cooling system PROD00020641 5/17/2009 email from Randy Best to Jayne Ritter and others re: HELB and tornado event analysis PROD00020642 4/9/2009 memo from Dave Malek to Kevin Ryan re: status of the turbine building and HELB piping and component cooling system PROD00020643 3/5/2009 NRC request form re: during a HELB event there is a chance the fire protection system may be activated and what is the response?

PROD00020644 3/14/2009 email from Jayne Ritter to Kelli Gadient re: risk impact of HELB piping and breakage PROD00020645 HELB piping impact through the turbine building PROD00020646 3/10/2009 email from Michael Staley to Jayne Ritter and others re: HELB event probability and safeguard discussion PROD00020647 4/17/2009 memo from Randy Best to Dave Malek re: HELB frequency mitigation and response PROD00020648 3/23/2009 email from Jayne Ritter to Karl Fleming and others re: susceptibility of HELB pipe breakage PROD00020649 3/28/2009 memo from Jayne Ritter to Randy Best re: engineering discussion of HELB damper fire damper modification PROD00020650 4/23/2009 memo from Dave Malek to Chris Lethgo re: fire protection during a HELB event PROD00020651 undated memo to William Scholberg and others from Randy Best re: safeguards in case of flooding or tornado or seismic events PROD00020652 memo about consequences and procedures immediately following a HELB in the turbine building PROD00020653 3/27/2009 email from Dave Malek to Randy Best re: the fire safety system in the event of a HELB PROD00020654 1/7/2009 email from Jayne Ritter to Randy Best re: risk reports and assessments in the event of a HELB event PROD00020655 4/21/2009 email from Jon Anderson to Randy Best re: risk reports and assessments in the event of a HELB event 23

Document Number Description PROD00020656 3/20/2009 email from Ben Horner to Chris Koehler and others re: HELB safety from seismic tornado and missile events PROD00020657 3/20/2009 email from Dave Malek to Randy Best re: HELB engineering and data analysis PROD00020658 3/16/2009 email from Jayne Ritter to Randy Best and others re: HELB safety and susceptibility from seismic tornado and missile events PROD00020659 3/23/2009 email from Randy Best to Mark Huting re: HELB safety and susceptibility from weather and missile events PROD00020660 4/13/2009 email from Randy Best to Jayne Ritter re: HELB simulator notes and observations on safety and susceptibility from seismic tornado and missile events PROD00020661 2/24/2009 email from Jayne Ritter to Jan Grobbelaar and others re: the HELB HRA Report and questions PROD00020662 3/7/2009 email from Randy Best to Jan Grobbelaar re: HELB HRA report and test scenarios PROD00020663 3/15/2009 email from Randy Best to Kelli Gadient re: HELB HRA report and risk impact in the turbine building PROD00020664 3/15/2009 email from Randy Best to Jeff LeClair and others re: HELB HRA report and risk impact in the turbine building PROD00020665 3/19/2009 email from Randy Best to Jayne Ritter and others re: HELB calculations and risk impact for flooding PROD00020666 12/22/2008 email from Randy Best to Charles Agan re: HELB pipe break calculations HELB and risk impact PROD00020667 4/30/2009 report from Stevenson & Associates re: PING seismic capacity of component cooling system PROD00020668 4/30/2009 report from Stevenson & Associates re: PING seismic capacity of component cooling system PROD00020669 4/30/2009 report from Stevenson & Associates re: PING seismic and tornado capacity of component cooling system PROD00020670 4/30/2009 report from Stevenson & Associates re: PING seismic and tornado capacity of component cooling system PROD00020671 5/1/2009 report from Stevenson & Associates re: PING seismic and tornado capacity of component cooling system PROD00020672 12/10/2003 PING safety procedures report for HELBs PROD00020673 3/13/2009 email from Randy Best to Jayne Ritter re: HELB piping events and the effect of cold cooling lines PROD00020674 3/11/2009 email from Randy Best to Jayne Ritter re: HELB piping events and the effect of cold cooling lines PROD00020675 1/17/2009 email from Randy Best to Jayne Ritter re: HELB piping events and the effect of cold cooling lines PROD00020676 2/26/2009 email from Jayne Ritter to Randy Best re: HELB piping events and the effect of cold cooling lines PROD00020677 undated memo re: Component cooling piping in the turbine building is vulnerable to HELB PROD00020678 2/26/2009 email from Jayne Ritter to Randy Best re: HELB pipe break frequency and procedures PROD00020679 3/5/2009 email from Jayne Ritter to Randy Best re: HELB pipe break frequency and procedures PROD00020680 Chart showing pipe failure rates and rupture frequencies PROD00020681 5/7/2009 email from Randy Best to Jayne Ritter and others re: HELB analysis with tornadoes and seismic events PROD00020682 2/19/2009 email from Dave Malek to Jan Grobbelaar and others re: HELB events with question and answer about operations and diagnosis PROD00020683 2/21/2009 email from Dave Malek to Randy Best re: HELB events with question and answer about operations and diagnosis PROD00020684 1/19/2009 email from Jayne Ritter to Randy Best and others re: HELB event discussion about risk and operations and diagnosis and procedures PROD00020685 Chart listing risk and impact on line breaks from external events like tornadoes and floods 24

Document Number Description PROD00020686 12/22/2008 email from Randy Best to Charles Agan and others re: a summary of the HELB discussions with the NRC about pipe breakage calculations and frequency PROD00020687 4/28/2009 email from Mike Hopman to Randy Best and others re: HELB discussions and impact from flooding on turbine building PROD00020688 3/13/2009 email from Jayne Ritter to Randy Best re: HELB questions and discussion of impact from flooding on turbine building PROD00020689 2/28/2009 email from Doug Smith to Randy Best re: HELB questions and discussion of impact from flooding on turbine building PROD00020690 2/9/2009 email from Jayne Ritter to Randy Best re: HELB questions and discussion of impact from flooding on turbine building PROD00020691 3/12/2009 memo from Dave Malek to Scott Northard re: the status of the cooling system and turbine building and HELB piping PROD00020692 1/10/2009 from Randy Best to Jayne Riiter and others re: the status of the cooling system and turbine building and HELB piping PROD00020693 5/8/2009 from Jayne Riiter to Randy Best re: the status of the cooling system and turbine building and HELB piping PROD00020694 5/12/2009 email from Randy Best to Walter Djordjevic re: CC-HELB and tornado analysis and discussions with the NRC PROD00020695 4/25/2009 email from Jayne Ritter to Dave Malek re: CC-HELB calculations and pipe break frequency PROD00020696 Chart with HELB calculations and pipe break frequency PROD00020697 HELB calculations and pipe break frequency PROD00020698 6/26/2009 Email from T. Asmus to J. Ritter and others at Xcel re: HELB calculations flooding and pipe break frequency PROD00020699 4/15/2009 email from Randy Best Jeff julius re: CC-HELB calculations and seismic or tornadic events PROD00020700 9/29/2008 from Xcel to NRC re: loss of safety function on feedwater pump due to mispositioned isolation valve PROD00020701 PING map analysis for CC/HELB PROD00020702 5/9/2009 email from Jayne Ritter to John Olvera and others re: MAAP runs for HELB analysis PROD00020703 3/5/2009 NRC question response form on fire during a HELB PROD00020704 4/21/2009 email from Randy Best to Brian Slack re: HELB and pipe locations PROD00020705 3/10/2009 email from Dennis Herling to Dave Malekre: operators response to HELB and fire alarms PROD00020706 4/17/2009 Email from R. Best (home email account) to R. Best re Plan for Adding CL Piping Vulnerability to HELB PROD00020707 4/28/2009 Email from R. Best to M. Hunting & D. Kettering re Impact of HELB Events on internal Flooding in Turbine Building PROD00020708 4/9/2009 Email from E. Halverson to R. Best & J. Ritter re PRA Input to IA, Tornado Damper Design PROD00020709 3/15/2009 Email from R. Best to J. LeClair & S. Zinkham re Determination of Risk Impact Due to Proposed Routing of IA Lines Through the Turbine Building PROD00020710 3/31/2009 Email from J. Ritter to K. Gadient et al. re Determination of Risk Impact Due to Proposed Routing of IA Lines Through the Turbine Building 25

Document Number Description PROD00020711 3/15/2009 Email from R. Best to K. Gadient et al. re Determination of Risk Impact Due to Proposed Routing of IA Lines Through the Turbine Building PROD00020712 1/17/2009 Email from P. Huffman to R. Best re PRA/HELB Considerations for PINGP IA Project PROD00020713 5/8/2009 Email from J. Grobbelaar of Curtiss Wright to J. Ritter & R. Best re PINGP SDP Simulator Run Procedures PROD00020714 5/11/2009 - Summary of Discussion with NRC related to CCHELB/Flooding Issue PROD00020715 4/21/2009 Email from R. Best to J. Ritter re Update from Meeting with NRC Residents PROD00020716 4/21/2009 Email from R. Best to J. Ritter re Update from Meeting with NRC Residents PROD00020717 3/20/2009 Email from J. Ritter to J. Gehlhar et al re Responses to CC HELB Questions PROD00020718 5/14/2009 Email from D. Potter to R. Best re Exclusions in the HELB Analysis PROD00020719 5/27/2009 Memo from D. Malek to K. Ryan re Status of Turbine Building HELB / CC Piping Significant Determination Process PROD00020720 4/14/2006 PINGP Abnormal Operating Procedure Manual for Fire Protection Line Break PROD00020721 3/26/2009 NRC Question Response Form re Deaerating Steam Line PROD00020722 3/5/2009 NRC Question Response Form re Fire Protection and HELB Events PROD00020723 4/16/2009 Email from J. O'Farrill to R. Best re Agenda for NRC Conference Call PROD00020724 4/16/2009 Email from R. Best to J. O'Farrill & D. Vincent re Agenda for NRC Conference Call PROD00020725 4/16/2009 Agenda for NRC Conference Call on CC/HELB Issue PROD00020726 2/28/2009 Email from J. Ritter to R. Best re Calculations related to VCT and CC PROD00020727 5/4/2009 Email from J. Ritter to J. Grobbelaar re MAAP Report related to RCP Seal LOCA Event with Loss of CC PROD00020728 5/5/2009 Email from R. Best to J. Grobbelaar & J. Ritter re MAAP Report related to RCP Seal LOCA Event with Loss of CC PROD00020729 4/22/2009 Email from R. Best to J. Anderson re New CAP 011782356 and CC/HELB Issues PROD00020730 1/6/2009 Email from J. Ritter to R. Best re Seismic Contributions to HELB in Turbine Building PROD00020731 1/7/2009 Email from R. Best to J. Ritter re CC System Alarms and HELB PROD00020732 Report re Component Cooling Water Surge Tank Level Trend for CC/HELB Analysis PROD00020733 3/18/2009 Email from B. Horner to J. Ritter et al re CC System Capacity and HELB Events PROD00020734 3/17/2009 Email from J. Ritter to J. Olvera, et al. re Discussions with Operations related to RCP Seal Event related to CC/HELB PROD00020735 Documentation of All Interactions Between High Energy Piping and Cooling Water (CL) That Also Affect Component Cooling (CC)

PROD00020736 5/7/2009 Email from R. Best to M. Huting et al. re CC/HELB Meeting Agenda Review Comments PROD00020737 PITCQ-089 - Job Performance Measure Worksheet - Emergency Tripping of RCP's Due to Loss of CC PROD00020738 5/7/2009 Email from J. Ritter to R. Best et al. re CC/HELB Meeting Comments PROD00020739 3/7/2009 Email from D. Smith to R. Best re CC/HELB Report Comments PROD00020740 3/1/2009 Email from J. Ritter to J. Brobbelaar & R. Best et al. re CC/HELB Report Comments PROD00020741 3/1/2009 Email from J. Grobbelaar to R. Best et al. re CC/HELB Report Comments PROD00020742 3/1/2009 Email from J. Ritter to R. Best et al. re CC/HELB Report Comments 26

Document Number Description PROD00020743 2/28/2009 Email from J. Grobbelaar to R. Best et al. re CC/HELB HRA Report Comments PROD00020744 2/24/2009 Email from J. Ritter to J. Grobbelaar re Comments on CC/HELB HRA Report PROD00020745 2/26/2009 Email from J. Ritter to J. Grobbelaar re Comments on CC/HELB HRA Report PROD00020746 2/24/2009 Email from J. Ritter to J. Grobbelaar re Comments on CC/HELB HRA Report PROD00020747 Various Event Trees related to Operator Response to Loss of CC PROD00020748 2/25/2009 Email from J. Ritter to J. Grobbelaar re Comments on CC/HELB HRA Report PROD00020749 2/28/2009 Email from J. Ritter to J. Grobbelaar re Comments on CC/HELB HRA Report PROD00020750 2/28/2009 Email from J. Ritter to J. Grobbelaar re Comments on CC/HELB HRA Report PROD00020751 5/18/2009 Email from D. Malek to R. Best & J. Ritter re Loss of CC related to Tornado PROD00020752 5/18/2009 Email from D. Malek to R. Best & J. Ritter re Loss of CC related to Tornado PROD00020753 5/9/2009 Email from J. Ritter to R. Best re Mitigating Flooding related to HELB PROD00020754 3/14/2009 Email from J. Ritter to K. Gadient re Routing of IA Lines through Turbine Building and HELB Impact PROD00020755 4/14/2009 Report: Turbine Building CC SDP Issue - RMU Success Path Continued Viability PROD00020756 4/19/2009 Email from R. Best to W. Scholberg re Calculations related to HELB for SDP Analysis PROD00020757 04/19/2009 Email from W. Scholberg to R. Best re Internal Flooding Evaluation Options PROD00020758 5/15/2009 Draft Report - MAAP Analysis, RCP Seal LOCA With Loss of CCW PROD00020759 Spreadsheet - Turbine Building HELB-Induced Loss of Component Cooling Water Event PROD00020760 Spreadsheet - Various Calculations related to HELB Piping PROD00020761 2/27/2009 Report - PINGP Component Cooling Water / Turbine Building Issue Risk Significance - Summary of Xcel Analysis Performed PROD00020762 3/17/2009 Email from J. Ritter to K. Vincent & W. Scholberg re HELB Component Cooling and Flooding Evaluation PROD00020763 3/17/2009 Email from S. Myers to J. Ritter et al. re HELB Component Cooling and Flooding Evaluation PROD00020764 3/17/2009 Email from J. Ritter to W. Scholberg et al. re HELB Component Cooling and Flooding Evaluation PROD00020765 3/2009 Draft Report - High Energy Line Break - Pipe Failure Rates for the Prairie Island PRA PROD00020766 4/2009 Final Report - High Energy Line Break - Pipe Failure Rates for the Prairie Island PRA PROD00020767 4/6/2009 Email from K. Fleming of Technology Insights to J. Ritter re Report - High Energy Line Break - Pipe Failure Rates for the Prairie Island PRA PROD00020768 4/6/2009 Email from J. Ritter to K. Fleming of Technology Insights re Report - High Energy Line Break - Pipe Failure Rates for the Prairie Island PRA PROD00020769 3/2009 Draft Report - High Energy Line Break - Pipe Failure Rates for the Prairie Island PRA PROD00020770 4/3/2009 Email from K. Fleming of Technology Insights to J. Ritter re Report - High Energy Line Break - Pipe Failure Rates for the Prairie Island PRA PROD00020771 4/3/2009 Email from J. Ritter to K. Fleming of Technology Insights re Report - High Energy Line Break - Pipe Failure Rates for the Prairie Island PRA PROD00020772 3/2009 Draft Report - High Energy Line Break - Pipe Failure Rates for the Prairie Island PRA PROD00020773 3/27/2009 Email from J. Ritter to K. Fleming of Technology Insights re Report - High Energy Line Break - Pipe Failure Rates for the Prairie Island PRA 27

Document Number Description PROD00020774 3/27/2009 Email from J. Ritter to K. Fleming of Technology Insights re Report - High Energy Line Break - Pipe Failure Rates for the Prairie Island PRA PROD00020775 5/8/2009 Email from D. Malek to R. Best et al. re Calculations for CC/HELB Seismic and Tornado Report PROD00020776 5/6/2009 Email from K. Kriesel to R. Best et al. re Calculations for CC/HELB Seismic and Tornado Report PROD00020777 5/5/2009 Email from K. Kriesel to R. Best re Calculations for CC/HELB Seismic and Tornado Report PROD00020778 5/8/2009 Email from R. Best to K. Kriesel re Calculations for CC/HELB Seismic and Tornado Report PROD00020779 5/5/2009 Email from R. Best to K. Kriesel et al. re Calculations for CC/HELB Seismic and Tornado Report PROD00020780 4/21/2009 Email from B. Slack to R. Best re FP / CL Piping PROD00020781 4/21/2009 Email from B. Slack to R. Best re FP / CL Piping PROD00020782 4/21/2009 Email from B. Slack to R. Best re FP / CL Piping PROD00020783 4/21/2009 Email from R. Best to S. Myers re FP / CL Piping PROD00020784 4/21/2009 Email from R. Best to B. Slack re FP / CL Piping PROD00020785 4/21/2009 Email from R. Best to B. Slack re FP / CL Piping PROD00020786 5/11/2009 Email from B. Slack to J. Ritter re HELB Flooding PROD00020787 5/11/2009 Email from J. Ritter to B. Slack re HELB Flooding PROD00020788 5/11/2009 Email from R. Rohrer to R. Best re HELB Flooding PROD00020789 5/11/2009 Email from W. Scholberg to R. Best re HELB Flooding PROD00020790 5/11/2009 Email from R. Best to B. Slack et al. re HELB Flooding PROD00020791 Slideshow - Prairie Island CCHELB/Flooding Program Direction PROD00020792 5/11/2009 Email from R. Best to R. Rohrer re HELB Flooding Meeting Agenda PROD00020793 5/11/2009 Email from R. Best to R. Rohrer re HELB Flooding Meeting Agenda PROD00020794 5/11/2009 email from R. Best to B. Slack et al. re HELB Flooding Concerns PROD00020795 Spreadsheet - Pipe Break Calculations (Linear Foot Method)

PROD00020796 Report - Explanation of Calculations for Pipe Break Frequencies PROD00020797 Instructions for Simulation Exercise related to HELB Event PROD00020798 2/25/2009 Email from R. Best to J. Ritter re HRA Report - SDP Comments PROD00020799 5/8/2009 Email from M. Milad to J. Ritter re IA Modifications and Additions of Check Valves to Mitigate HELB Issues PROD00020800 2/24/2009 Email from D. Smith to R. Best re Independent Review of Time Critical operator Actions for Flooding Issue PROD00020801 2/24/2009 Email from R. Best to D. Smith re Independent Review of Time Critical Operator Actions for Flooding Issue PROD00020802 2/24/2009 Email from R. Best to W. Scholberg & M. Smutny re Independent Review of Time Critical operator Actions for Flooding Issue PROD00020803 5/25/2009 Email from R. Best to J. Ritter re Information Needed for NRC Calculation of CC/HELB SDP Event PROD00020804 5/9/2009 Email from J. Ritter to R. Best & D. Malek re LER for SFP HX - CC Condition PROD00020805 3/10/2009 Email from J. Ritter to J. Olvera & R. Best re MAAP Runs for SI Pump Continuous Operation on CC/HELB Event Seal LOCA PROD00020806 3/9/2009 Email from J. Olvera to J. Ritter & R. Best re MAAP Runs for SI Pump Continuous Operation on CC/HELB Event Seal LOCA 28

Document Number Description PROD00020807 3/8/2009 Email from J. Ritter to J. Olvera & R. Best re MAAP Runs for SI Pump Continuous Operation on CC/HELB Event Seal LOCA PROD00020808 3/8/2009 Email from J. Ritter to J. Olvera & R. Best re MAAP Runs for SI Pump Continuous Operation on CC/HELB Event Seal LOCA PROD00020809 3/10/2009 Email from J. Olvera to J. Ritter & R. Best re MAAP Runs for SI Pump Continuous Operation on CC/HELB Event Seal LOCA PROD00020810 3/4/2009 Email from J. Ritter to J. Olvera re MAAP Runs for SI Pump Continuous Operation on CC/HELB Event Seal LOCA PROD00020811 3/4/2009 Email from J. Ritter to J. Olvera & R. Best re MAAP Runs for SI Pump Continuous Operation on CC/HELB Event Seal LOCA PROD00020812 3/3/2009 Email from J. Ritter to J. Olvera & R. Best re MAAP Runs for SI Pump Continuous Operation on CC/HELB Event Seal LOCA PROD00020813 3/112009 Email from R. Best to J. Olvera & J. Ritter re MAAP Runs for SI Pump Continuous Operation on CC/HELB Event Seal LOCA PROD00020814 3/8/2009 Email from R. Best to J. Ritter & D. Malek re MAAP Runs for SI Pump Continuous Operation on CC/HELB Event Seal LOCA PROD00020815 3/10/2009 Email from R. Best to J. Olvera & J. Ritter re MAAP Runs for SI Pump Continuous Operation on CC/HELB Event Seal LOCA PROD00020816 03/22/2009 Email from D.Vincent to R.Best and J.Ritter cc: S.Myers and other excel employees re discussion of the removal of line MS-35 the HELB initiating event frequency calculation PROD00020817 04/09/2009 Email from J.Ritter to D.Malek and R.Best re discussion about the adverse effects of HELB on FW and CD pumps.

PROD00020818 04/29/2009 Email from J.Ritter to J.Olivera cc: P.Knoespel and R.Best re Discussion about HELB SDP and operator responses to high pressure levels PROD00020819 Note re: SI pump subcomponent PROD00020820 Note re: SI pump related to cooling water system date unknown author unknown PROD00020821 04/29/2009 Email from J.Olivera to J.Ritter cc P.Knoespel and R.Best re MAAP runs for CC/HELB SDP - case 2. Note discussion of HELB and SI pump start up in the MAAP modeling.

PROD00020822 04/29/2009 Email from J.Ritter to J.Olivera cc P.Knoespel and R.Best re: MAAP runs for CC/HELB SDP - Case 2.

Discussion of need to open a valve.

PROD00020823 4/28/2009 Email from J. Olivera to R. Best cc J. Ritter and other Xcel employees re: MAAP runs for CC/HELB SDP -

Case 2 PROD00020824 4/28/2009 Report on the results of failure simulation modeling for Normal Feedwater, component cooling water and emergency coolant losses PROD00020825 06/05/2005 Author unknown. Simulation software report re PWR severe accident analysis code results.

PROD00020826 04/28/2009 PWR severe accident analysis simulation report. Note the modeling of HELB and of a loss of coolant component water.

29

Document Number Description PROD00020827 04/28/2009 Author unknown re: PWR severe accident analysis code results report PROD00020828 04/28/2009 Author unknown re: PWR severe accident analysis code results report PROD00020829 04/27/2009 Email from J.Olivera to R.Best Re MAAP system component failure simulation runs for CC/HELB analyses PROD00020830 04/13/2009 Email from R.Best to J.Olivera and J.Ritter cc D.Malek Re: MAAP runs for CC/HELB SDP - HRA case evaluations where worst case will support sump recirculation PROD00020831 05/24/2009 Email from J.Ritter to R.Best cc D.Malek re NRC meeting and discussion of FW pipe-whip HELB and seismic interactions issues PROD00020832 05/14/2009 Email from J.Ritter to R.Best cc D.Malek re NRC meeting and HELB pipe interactions criteria and DBE earthquake/seismic modeling PROD00020833 05/15/2009 Email from R.Best to J.Ritter cc D.Malek re NRC Meeting and FW pipe HELB pipe interactions modeling PROD00020834 05/14/2009 Email from R.Best to J.Ritter cc D.Malek Re NRC Meeting and discussion of HELB pipe interactions, flooding and earthquake/seismic modeling PROD00020835 05/14/2009 Email from R.Best to J.Ritter cc D.Malek re NRC meeting and discussion of SDP process with respect to HELB design criteria and earthquakes PROD00020836 04/21/2009 email from D.Malek to W.Hadeka and other excel employees cc R.Best and other excel employees re NRC question and discussion of the cc-HELB-SDP and vendor agreement with xcel's sump pump MPR analysis PROD00020837 04/20/2009 email from W.Hadeka to D.Malek and other excel employees cc R.Best and other excel employees re NRC question and discussion of the cc-HELB-SDP and vendor agreement with xcel's sump pump MPR analysis PROD00020838 04/22/2009 email from R.Best to W.Hadeka re NRC question and discussion of the cc-HELB-SDP and vendor agreement with xcel's sump pump MPR analysis PROD00020839 05/21/2009 Email from J.Ritter to R.Best and T.Bacon re review of operator action to start a pump PROD00020840 05/21/2009 Email from T.Bacon to R.Best Re review of operator action to start a pump PROD00020841 05/21/2009 Email from R.Best to T.Bacon cc J.Ritter Re review of operator action to start a pump PROD00020842 03/13/2009 Email from D.Malek to M.Smutney cc R.Best Re review of expected operator responses to fire alarms associated with a high energy line break PROD00020843 03/13/2009 Email from M.Smutney to D.Malek cc R.Best Re review of expected operator responses to fire alarms associated with a high energy line break PROD00020844 03/11/2009 Email from J.Anderson to R.Best and D.Herling Re review of expected operator responses to fire alarms associated with a high energy line break event PROD00020845 03/11/2009 Email from D.Herling to R.Best and D.Malek cc T.Bacon and other excel employees Re review of expected operator responses to fire alarms associated with a high energy line break event PROD00020846 03/11/2009 Email from R.Best to D.Herling and D.Malek cc T.Bacon and other excel employees review of expected operator responses to fire alarms associated with a high energy line break event PROD00020847 03/11/2009 Email from R.Best to D.Herling and D.Malek Re review of expected operator responses to fire alarms associated with a high energy line break event 30

Document Number Description PROD00020848 05/06/2009 J.Grobbelaar analyst-report author - simulator report finding that operators fail to diagnose loss of CC, isolate letdown and reduce charging flow in response to a high energy line break (HELB) initiating event -operator training PROD00020849 05/04/2009 J.Grobbelaar analyst-report author - simulator report finding that operators fail to diagnose loss of CC, isolate letdown and reduce charging flow in response to a high energy line break (HELB) initiating event - operator training PROD00020850 04/22/2009 Simulator CC/HELB Scenario - related to operator training PROD00020851 05/06/2009 Simulator CC/HELB Scenario - related to operator training PROD00020852 05/05/2009 Email from R.Best to J.Grobbelaar cc J.Julius Re PI SDP simulator runs.

PROD00020853 05/04/2009 J. Grobbelaar analyst. Report re HELB initiating event simulation results and probable operator training report. Operators fail to diagnose loss of CC, isolate letdown and reduce charging flow to minimum.

PROD00020854 05/01/2009 Email from J.Ritter to J.Grobbelar and J.Grobberlaarr cc R.Best, D.Malek and J.Julius Re PI SDP simulator runs discussing HELB event large break flow and predicted flooding effects on the turbine building and the component cooling system PROD00020855 04/28/2009 Email from J.Grobbelar to J.Ritter cc R.Best and J.Julius Re PI SDP simulator runs discussing HELB event large break flow and predicted flooding effects on the turbine building and the component cooling system PROD00020856 01/05/2009 Email from R.Best to J.Ritter and B.Homer cc L.Johnson and M.Brossart re potential NRC question and discussion on the effect of an HELB pipe break in the Turbine building and its impact on the CC line PROD00020857 03/11/2009 Email from J.Ritter to R.Best Re discussion about HELB piping that could impact the CC lines PROD00020858 04/13/2009 Email from E.Halverson to E.Havverson R.Best and J.Ritter cc M.Brossart and J.LeClair re PRA input and discussion about design impacts on HELB and tornado dampers in the turbine building.

PROD00020859 04/13/2009 Email from E.Halvorson to R.Best and J.Ritter cc M.Brossart and J.LeClair Re PRA input discussion about tornado dampers, fire dampers and HELB dampers on the turbine building.

PROD00020860 01/18/2009 Email from R.Best to P.Huffman cc R.Roher and other excel employees re discussion of inclusion of HELB events occurring in the turbine building are already included in the current PRA design. Further discussion about further analysis needed.

PROD00020861 02/02/2009 Email from J.Ritter to M.Wadley and other Excel employees Re Prairie Island CC/HELB SDP analysis PROD00020862 02/01/2009 Email from M.Wadley to J.Ritter and other Excel employees Re Prairie Island CC/HELB SDP analysis PROD00020863 02/02/2009 Email from M.Wadley to J.Ritter and other Excel employees Re Prairie Island CC/HELB SDP analysis PROD00020864 Email from J.Ritter to D.Malek and R.Best re discussion of tornado events PROD00020865 05/14/2009 Email from J.Ritter to D.Malek and R.Best re discussion about tornadic and HELB events PROD00020866 05/14/2009 Email from D.Malek to J.Ritter and R.Best re discussion of tornado and HELB initiating events PROD00020867 05/14/2009 Email from J.Ritter to D.Malek and R.Best re preliminary results from analysis of tornadic and HELB initiated events.

PROD00020868 05/14/2009 Email from R.Best to D.Malek and J.Ritter re preliminary results from analysis of tornadic and HELB initiated events 31

Document Number Description PROD00020869 05/09/2009 Email from J.Ritter to R.Best and M.Milad re discussion about resolution of high energy line break issues and check valves PROD00020870 05/08/2009 Email from M.Milad to R.Best re discussion about resolution of high energy line break issues and check valves PROD00020871 05/09/2009 Email from R.Best to M.Milad re discussion about resolution of high energy line break issues and check valves PROD00020872 05/09/2009 Email from R.Best to M.Milad re discussion about resolution of high energy line break issues and check valves PROD00020873 03/15/2009 Email from R.Bets to J.Ritter and K.Gadient cc J.LeClair and S.Zinkham re Discussion about proposed ventilation scheme in the IA Modification plan and Tornado, fire and HELB dampers.

PROD00020874 03/06/2009 Prairie Island Nuclear Generating Plant document re human reliability analysis calculations PROD00020875 04/22/2009 Email from S.Myers to R.Best and other Excel employees Re FP flow rate calculations and identification of a location near feedwater pumps where a break may impact both a CL and FP line. Also discussion o Turbine Building HELP-induced flooding calculations and an SDP evaluation PROD00020876 06/04/2009 Email from D.Malek to J.Ritter cc R.Best re review of quantification notebook. Note mention of HELB and Tornadic events in comments PROD00020877 06/03/2009 Email from D.Malek to D.Best cc J.Ritter re review of quantification notebook. Note mention of analysis of HELB and Tornadic events in comments PROD00020878 06/02/2009 Email from D.Malek to D.Best cc J.Ritter re review of quantification notebook. Note mention of analysis of HELB and Tornadic events in comments PROD00020879 05/08/2009 Email from S.Skoyen to R.Best re discussion of analyses of Gas House block wall susceptibility to HELB and tornadic events PROD00020880 05/07/2009 Email from B.Horner to R.Best re discussion of analyses of Gas House block wall susceptibility to HELB and tornadic events PROD00020881 05/07/2009 Email from B.Horner to R.Best cc L.Johnson re discussion of analyses of Gas House block wall susceptibility to HELB and tornadic events PROD00020882 05/08/2009 Email from R.Best to S.Skoyen cc D.Malek re discussion of analyses of Gas House block wall susceptibility to HELB and tornadic events PROD00020883 05/08/2009 Email from R.Best to B.Homer cc J.Ritter and other excel employees re discussion of analyses of Gas House block wall susceptibility to HELB and tornadic events PROD00020884 05/07/2009 Email from R.Best to B.Homer re discussion of analyses of Gas House block wall susceptibility to HELB and tornadic events PROD00020885 03/06/2009 Email from D.Malek to R.Best re SDP Actions and discussion about a seismic analysis in the turbine building location PROD00020886 03/06/2009 Email from D.Malek to R.Best re SDP Actions and discussion about a seismic analysis in the turbine building 32

Document Number Description PROD00020887 03/06/2009 Email from D.Malek to R.Best re SDP Actions and discussion about a seismic analysis in the turbine building PROD00020888 03/06/2009 Email from J.Ritter to J.Ritter, D.Malek and R.Best re SDP Actions and discussion about a seismic analysis in the turbine building PROD00020889 03/05/2009 Email from J.Ritter to D.Malek and R.Best re SDP Actions and discussion about a seismic analysis in the turbine building PROD00020890 Date unknown author unknown external event analysis project document re assignment of tasks for HELB, tornado and seismic event analyses.

PROD00020891 03/06/2009 Email from R.Best to D.Malek re SDP Actions and discussion about a seismic analysis in the turbine building PROD00020892 03/06/2009 Email from R.Best to J.Ritter and D.Malek re SDP Actions and discussion about a seismic analysis in the turbine building PROD00020893 03/06/2009 Email from R.Best to J.Ritter and D.Malek re SDP Actions and discussion about a seismic analysis in the turbine building PROD00020894 03/06/2009 Email from R.Best to J.Ritter re SDP Actions and discussion about a seismic analysis in the turbine building PROD00020895 03/09/2009 Email from J.Ritter to R.Best re SDP discussion with NRC official J.Geisner about NRC concerns that operations does not have ownership and the importance of operations demonstrate ownership in the SDP evaluation PROD00020896 03/09/2009 Email from D.Malek to R.Best re SDP discussion with NRC official J.Geisner about NRC concerns that operations does not have ownership and the importance of operations demonstrate ownership in the SDP evaluation PROD00020897 02/06/2009 Email from R.Best to J.Ritter and other excel employees cc S.Skoyen and other excel employees re information about the impact of seismic HELB initiating event on cc piping PROD00020898 02/06/2009 Email from R.Roher to J.Ritter and other excel employees cc S.Skoyen and other excel employees re information about the impact of seismic HELB initiating event on cc piping PROD00020899 03/10/2009 Email from D.Malek to R.Best cc J.Ritter re contractor support for CC/HELB-Seismic Portion analysis - walk downs PROD00020900 03/10/2009 Email from D.Malek to R.Best cc J.Ritter re contractor support for CC/HELB-Seismic Portion analysis - walk downs PROD00020901 03/10/2009 Email from J/Ritter to D.Malek and R.Best re contractor support for CC/HELB-Seismic Portion analysis -

walk downs PROD00020902 03/10/2009 Email from D.Malek to R.Best cc J.Ritter re contractor support for CC/HELB-Seismic Portion analysis - walk downs PROD00020903 03/10/2009 Email from D.Malek to R.Best cc J.Ritter re contractor support for CC/HELB-Seismic Portion analysis - walk downs PROD00020904 03/10/2009 Email from D.Malek to R.Best cc J.Ritter re contractor support for CC/HELB-Seismic Portion analysis - walk downs PROD00020905 03/10/2009 Email from R.Best to D.Malek re contractor support for CC/HELB-Seismic Portion analysis - walk downs 33

Document Number Description PROD00020906 03/10/2009 Email from R.Best to J.Ritter and D.Malek re contractor support for CC/HELB-Seismic Portion analysis -

walk downs PROD00020907 05/19/2009 Email from B.Slack to J.Ritter and R.Best re CC-HELB damage risk assessment PROD00020908 05/18/2009 Email from J.Ritter to B.Slack and R.Best re CC-HELB damage risk assessment PROD00020909 05/18/2009 Email from J.Ritter to R.Best re CC-HELB team meeting - alarm activation criteria PROD00020910 05/18/2009 Email from R.Best to J.Ritter re CC-HELB team meeting - alarm activation criteria and operator responses PROD00020911 03/10/2009 Email from M.Staley to J.Ritter and other excel employees Discussion about the results of a walk down to determine HELB piping impact on a proposed IA line and discussion PROD00020912 03/06/2009 Email from J.Ritter to R.Best and other excel employees cc M.Staley re PRA discussion about the results of a walk down to determine HELB piping impact on a proposed IA line PROD00020913 03/06/2009 Email from R.Best to J.LeClair cc J.Ritter re PRA discussion about HELB concerns PROD00020914 03/06/2009 Email from R.Best to J.LeClair cc J.Ritter re PRA discussion about HELB concerns PROD00020915 03/18/2009 Email from B.Slack to J.Ritter and other excel employees cc D.Malek and other excel employees re potential HELB turbine building flooding evaluation PROD00020916 03/18/2009 Email from J.Ritter to B.Slack and other excel employees cc D.Malek and other excel employees re potential HELB turbine building flooding evaluation PROD00020917 Date unknown Email from unknown sender to unknown recipient cc S.Myers and other excel employees re Turbine building flooding and break flow calculations PROD00020918 02/09/2009 Email from D.Malek to J.Ritter and R.Best cc T.Asmus re Turbine building HELB / CC piping interactions PROD00020919 02/09/2009 Email from R.Best to J.Ritter re Turbine building HELB / CC piping interactions PROD00020920 02/09/2009 Email from R.Best to J.Ritter re Turbine building HELB / CC piping interactions PROD00020921 04/14/2009 B.Slack EC 13974 document re analyzes the effects of HELB jet infringement on turbine building cc piping PROD00020922 4/20/2009 Memo from D.Malek to K.Ryan re status of the turbine building HELB / CC piping significant determination process PROD00020923 03/12/2009 email from J.Ritter to B.Slack and other excel employees cc D.Malek and other excel employees re Turbine building HELB / CC SDP update to add a new piping section to the SDP PROD00020924 03/12/2009 email from J.Ritter to B.Slack and other excel employees cc D.Malek and R.Best re New piping piece is added to calculations for the turbine building HELB / CC SDP.

PROD00020925 05/08/2009 Email from J.Grobbelaar to J.Ritter and R.Best re HEP data updated to include tornado simulation/data PROD00020926 5/27/2009 analysis re: Identification and definition of HELB events and general safety at PINGP PROD00020927 5/27/2009 analysis re: Identification and definition of HELB events and general safety at PINGP PROD00020928 5/27/2009 PINGP document re: analysis and identification and definition of seismic and HELB events PROD00020929 5/27/2009 PINGP document re: analysis and identification and definition of seismic and HELB events PROD00020930 5/26/2009 PINGP document re: analysis and identification and definition of seismic and HELB events PROD00020931 5/26/2009 PINGP document re: analysis and identification and definition of seismic and HELB events PROD00020932 6/2/2009 email from Dave Malek to Jayne Ritter and others re: HELB breaks and frequency calculations PROD00020933 5/30/2009 email from Jayne Ritter to Dave Malek and others re: HELB breaks and frequency calculations 34

Document Number Description PROD00020934 5/29/2009 email from Dave Malek to Jayne Ritter and others re: HELB breaks and frequency calculations PROD00020935 5/29/2009 email from Jayne Ritter to Dave Malek and others re: HELB breaks and frequency calculations PROD00020936 5/31/2009 email from Randy Best to Dave Malek and others re: HELB breaks and frequency calculations PROD00020937 5/30/2009 email from Randy Best to Dave Malek and others re: HELB breaks and frequency calculations PROD00020938 5/29/2009 email from Randy Best to Dave Malek and others re: HELB breaks and frequency calculations PROD00020939 undated memo from Mark Huting re: the continuing effort to mitigate HELB events PROD00020940 12/23/2008 email from Randy Best to Jayne Ritter re: HELB events and damper designs PROD00020941 4/21/2009 email from Randy Best Sonja Myers and others re: HELB events and flooding effects on the turbine building PROD00020942 5/27/2009 report re: the HELB pipe break frequency calculations PROD00020943 3/16/2009 email from Randy Best to Ben Horner re: the functionality of several systems after HELB events PROD00020944 4/17/2009 report re: a summary of open issues/problems at PINGP PROD00020945 3/25/2009 email from Randy Best to David Kettering re: effects of seismic and tornado events on the turbine building PROD00020946 3/16/2009 email from Jayne Ritter to Randy Best re: the functionality of several systems after HELB events PROD00020947 4/10/2009 email from Randy Best to Ryan Cox re: potential HELB lines that could rupture PROD00020948 3/11/2009 memo from Dave Malek to Scott Northard re: the CC piping adjacent to the HELB location in the turbine building PROD00020949 3/4/2009 memo from Ben Horner to Scott Northard re: the CC piping adjacent to the HELB location in the turbine building PROD00020950 2/12/2009 memo from Ben Horner to Scott Northard re: the CC piping adjacent to the HELB location in the turbine building PROD00020951 1/13/2009 memo from Ben Horner to Scott Northard re: the CC piping adjacent to the HELB location in the turbine building PROD00020952 1/12/2009 memo from Ben Horner to Scott Northard re: the CC piping adjacent to the HELB location in the turbine building PROD00020953 5/4/2009 report re: HELB pipe break frequency calculations PROD00020954 5/23/2009 report re: PING identification and definition of safety issues PROD00020955 5/30/220 email from Jayne Ritter to Dave Malek re: HELB designs calculations and safety PROD00020956 undated report re: the HELB pipe break frequency calculation PROD00020957 3/16/2009 email from Jayne Ritter to Mark Smutney and others re: the impact of flooding on the unit 1 turbine building PROD00020958 4/17/2009 Memo from D. Malek to K. Ryan re CAP01145695, CC Piping adjacent to HELB location in turbine bldg PROD00020959 4/19/2009 Memo from D. Malek to K. Ryan re CAP01145695, CC Piping adjacent to HELB location in turbine bldg, Revision 2 PROD00020960 5/15/2009 CC-HELB Team Meeting Summary PROD00020961 Report on CC/HELB SDP issues PROD00020962 5/2/2000 PINGP Calculation Cover Sheet: HCLPF Capacity Evaluation of CC Heat Exchangers PROD00020963 4/27/2009 Loss of Turbine Building CC Lines Flowchart PROD00020964 4/2/2008 Abnormal Procedure: Earthquakes, Revision 26 35

Document Number Description PROD00020965 1/5/2009 PINGP Assessment Report on Component Cooling Piping in the Turbine Building prepared by Automated Engineering Services PROD00020966 4/3/2009 Turbine Building CC Lines SDP Response PROD00020967 4/2009 Turbine Building CC Lines SDP Response, NRC Update Conference Call Agenda PROD00020968 4/22/2009 Action Request Record Report: CC piping adjacent to HELB location in turbine bldg PROD00020969 4/20/2009 Action Request Record Report: No HELB flooding calculation for Turbine building PROD00020970 CC/HELB Frequency Summary Spreadsheet PROD00020971 CC/HELB SDP External Resource Costs Spreadsheet PROD00020972 CC-CL-HELB Combo IEs Spreadsheet PROD00020973 Proposed Xcel Position Statements Relative to the CC-HELB SDP Evaluation PROD00020974 CC-HELB SDP Option 1 Draft A PROD00020975 Prairie Island CCHELB/Flooding Program Direction PowerPoint PROD00020976 Prairie Island CCHELB/Flooding Program Direction PowerPoint PROD00020977 HELB Flooding Walkdown Notes Spreadsheet PROD00020978 Notes on Discussions with Residents re CAPs related to HELBs PROD00020979 4/17/2009 Draft Plan to Incorporate CL-HELB into CC-HELB SDP Evaluation PROD00020980 3/2009 High Energy Line Break Pipe Failure Rates for the Prairie Island PRA: Draft Report, prepared by K. Fleming &

B. Lydell with KNF Consulting Services PROD00020981 NRC Requests for Additional Information PROD00020982 External Events Assessment: Effect of External Events on Risk Informed / Risk Impact Assessment for Extending Containment Type A Test Interval PROD00020983 4/15/2004 PINGP Calculation: Water Volume Used by the AFWPS Following a Seismic Event or Tornado PROD00020984 6/3/2005 PINGP Calculation: Effects of Flooding in the AFW Pump Room from a Postulated Pipe Rupture PROD00020985 12/10/2003 Plant Safety procedures: High Energy Line Break / Leak, Revision 8 PROD00020986 12/1/1992 EDG Exhaust Air Piping Missile Protection PROD00020987 1/5/2009 Letter from A. Setlur with Automated Engineering Services to S. Ford re Transmittal of Assessment Report on CC Piping in the TB to HELB Events PROD00020988 3/9/2009 Notes on Discussion with J. Geissner with the NRC on CC/HELB SDP Issue PROD00020989 3/9/2009 Notes of Discussion with Jack Geissner with NRC on CC/HELB SDP Issue, with management update 4/3/2009 PROD00020990 3/9/2009 Notes of Discussion with Jack Geissner with NRC on CC/HELB SDP Issue, with management update 4/16/2009 PROD00020991 3/9/2009 Notes of Discussion with Jack Geissner with NRC on CC/HELB SDP Issue, with NRC update 4/16/2009 PROD00020992 HELB Pipe Break Frequency - N2 Lines PROD00020993 HELB Pipe Break Frequency Spreadsheet - N2 Lines PROD00020994 1/29/2009 Basic Event Summary: 0BRCPSTOPXY, Operator Fails to Stop RCP's Following a Loss of Component Cooling and Seal Injection 36

Document Number Description PROD00020995 1/22/2009 Human Reliability Analysis Operator Interviews PROD00020996 9/17/1999 NSP's Response to Request for Additional Information Regarding Report NSPLMI-96001, Individual Plant Examination of External Events (IPEEE), Related to Generic Letter 88-20 PROD00020997 3/27/2009 NRC Question Response Form re: location of 12-MS-35 PROD00020998 8/12/1999 R. Kennedy, "Overview of Methods for Seismic PRA and Margin Analysis Including Recent Innovations,"

Proceedings of the OECD-NEA Workshop on Seismic Risk, Tokyo Japan.

PROD00020999 5/1/2009 CC-HELB SDP Activities Update PROD00021000 5/15/2009 Management update re CC HELB "proper" (excluding internal flooding)

PROD00021001 Discussion on new CAP on HELB-Induced internal flooding PROD00021002 5/1/2009 Notes on morning call PROD00021003 5/8/2009 Notes on morning call PROD00021004 5/22/2009 Notes on morning call PROD00021005 5/29/2009 Notes on morning call PROD00021006 3/5/2009 Notes on NRC Conference Call - CC-HELB SDB Evaluation PROD00021007 2/10/2009 USNRC Integrated Inspection Report PROD00021008 5/6/2009 Letter from M. Satorius with NRC to M. Wadley re Final Significance Determination of White Finding and Notice of Violation; NRC Inspection Report no. 05000282/2009008; 05000306/2009008 PROD00021009 1/28/2009 NRC Question Response Form: question re length and diameters of piping, Revision 1 PROD00021010 2/12/2009 Progress Report on Release 996 Analysis of CC/FW/CF Lines in Turbine Building PROD00021011 4/16/2009 Agenda for Discussion with NRC on CC/HELB SDP Issue PROD00021012 2/27/2009 PINGP Component Cooling Water / Turbine Building Issue Risk Significance Summary of Xcel Analysis Performed PROD00021013 2/27/2009 PINGP Component Cooling Water / Turbine Building Issue Risk Significance Summary of Xcel Analysis Performed with JR comments PROD00021014 5/28/2009 PINGP Component Cooling Water / Turbine Building Issue Risk Significance: Summary of Xcel Analysis Performed, Revision 0 PROD00021015 5/28/2009 PINGP Component Cooling Water / Turbine Building Issue Risk Significance: Summary of Xcel Analysis Performed, Revision 1 PROD00021016 5/28/2009 PINGP Component Cooling Water / Turbine Building Issue Risk Significance: Summary of Xcel Analysis Performed, Revision 2 PROD00021017 3/1/2009 PINGP Component Cooling Water / Turbine Building Issue Risk Significance: Summary of Xcel Analysis Performed PROD00021018 3/1/2009 PINGP Component Cooling Water / Turbine Building Issue Risk Significance: Summary of Xcel Analysis Performed, Revision 1 PROD00021019 3/1/2009 PINGP Component Cooling Water / Turbine Building Issue Risk Significance: Summary of Xcel Analysis Performed, Revision 2 37

Document Number Description PROD00021020 3/1/2009 PINGP Component Cooling Water / Turbine Building Issue Risk Significance: Summary of Xcel Analysis Performed, Revision 3 PROD00021021 3/1/2009 PINGP Component Cooling Water / Turbine Building Issue Risk Significance: Summary of Xcel Analysis Performed, Revision 3x PROD00021022 3/1/2009 PINGP Component Cooling Water / Turbine Building Issue Risk Significance: Summary of Xcel Analysis Performed, Revision 4 PROD00021023 3/1/2009 PINGP Component Cooling Water / Turbine Building Issue Risk Significance: Summary of Xcel Analysis Performed, Revision 5 PROD00021024 3/1/2009 PINGP Component Cooling Water / Turbine Building Issue Risk Significance: Summary of Xcel Analysis Performed, Revision 6 PROD00021025 2/25/2009 EPRI HRA Calculator 4.0 PROD00021026 4/30/2009 Plan to address HELB flooding issues PROD00021027 5/22/2009 Summary of Discussion with NRC PROD00021028 4/17/2009 NRC Question Response Form re high temperature seals installation date PROD00021029 3/9/2009 NRC Question Response Form re operations' response to fire alarm during a HELB event PROD00021030 4/24/2009 Memo from R. Best to W. Djordjevic with Stevenson & Assoc. re RFP to Support Prairie Island Turbine Building Systems Seismic Risk Analysis PROD00021031 Request for Proposal to Support Prairie Island Turbine Building Systems Seismic Risk Analysis PROD00021032 4/24/2009 Memo from R. Best to W. Djordjevic with Stevenson & Assoc. re RFP to Support Prairie Island Turbine Building Systems Seismic Risk Analysis PROD00021033 4/14/2009 Turbine Building CC SDP Issue RMU Success Path Continued Viability PROD00021034 4/10/2009 Prairie Island NGP 10,000 Year Return Period Earthquake Uniform Hazard Spectrum, prepared by Steveneson & Assoc.

PROD00021035 4/10/2009 PI Seismic & Tornado Fragilities: Seismic Capacity of Reactor Make-Up Water Storage Tank, prepared by Stevenson & Assoc.

PROD00021036 4/8/2009 PI Seismic & Tornado Fragilities: Seismic Capacity of Tank CST 11, prepared by Stevenson & Assoc.

PROD00021037 4/10/2009 PI Seismic & Tornado Fragilities: Seismic Capacity of Gas House Blow-out Panel, prepared by Stevenson &

Assoc.

PROD00021038 4/30/2009 PI Seismic & Tornado Fragilities: Seismic Capacity of Component Cooling Piping, prepared by Stevenson &

Assoc.

PROD00021039 4/10/2009 PI Seismic & Tornado Fragilities: Wind Capacity of Gas House Blow-out Panel, prepared by Stevenson &

Assoc.

PROD00021040 4/28/2009 PI Seismic & Tornado Fragilities: Wind Capacity of Tank CST 11, prepared by Stevenson & Assoc.

PROD00021041 4/28/2009 PI Seismic & Tornado Fragilities: Wind Capacity of Turbine Building Siding near Component Cooling Piping, prepared by Stevenson & Assoc.

PROD00021042 5/14/2009 PI Seismic & Tornado Fragilities: Development of Final Probability of Failure Curves and Parameters, prepared by Stevenson & Assoc.

38

Document Number Description PROD00021043 5/18/2009 PI Seismic & Tornado Fragilities: Seismic and Wind Capacities of Gas House, prepared by Stevenson &

Assoc.

PROD00021044 5/2009 External Event Fragilities for Component Cooling System in Turbine Building (Draft), prepared by Stevenson &

Assoc.

PROD00021045 5/2009 External Event Fragilities for Component Cooling System in Turbine Building (Draft), prepared by Stevenson &

Assoc.

PROD00021046 5/2009 External Event Fragilities for Component Cooling System in Turbine Building, Rev. 0, prepared by Stevenson &

Assoc.

PROD00021047 3/19/2009 Letter from W. Djordjevic with Stevenson & Assoc. to R. Best re Proposal to Assess and Develop Seismic and Tornado Fragilities for Selected Prairie Island Turbine Building Structures, Systems and Components (SSCs)

PROD00021048 4/29/2009 Letter from W. Djordjevic with Stevenson & Assoc. to R. Best re Proposal to Assess and Develop Seismic and Tornado-induced Flooding Fragilities for Selected Prairie Island Turbine Building Structures, Systems and Components (SSCs)

PROD00021049 Collection of Pictures of Piping near Component Storage Tank PROD00021050 3/25/2009 Engineering Walkdown Report, Draft, prepared by Stevenson & Assoc.

PROD00021051 Outline of Identification of CC Line Damage Mechanisms (in the Turbine Building)

PROD00021052 Notes on Options for CC-HELB / HELB Induced Flooding SDP Issues PROD00021053 Safeguards Chilled Water System Seismic Adequacy, Rev. 2 PROD00021054 Significance Determination Process (SDP) Phase 2: Prairie Island Unit 2: CAP 01145695: "CC Piping Adjacent to HELB Location in Turbine Building" PROD00021055 4/3/2009 Turbine Building CC Lines SDP Response: Management Update Conference Call Agenda PROD00021056 Seismic CDF from SMA: Annual Probability of Exceedance for Peak Ground Acceleration PROD00021057 4/2/2009 Loss of Turbine Building CC Lines PROD00021058 3/17/2009 Loss of Turbine Building CC Lines Flowchart PROD00021059 4/1/2009 Loss of Turbine Building CC Lines Flowchart PROD00021060 4/1/2009 Loss of Turbine Building CC Lines Flowchart PROD00021061 4/1/2009 Loss of Turbine Building CC Lines Flowchart PROD00021062 Tornado Analysis of Turbine and Auxiliary Buildings Phase 2, prepared by Stephenson & Assoc.

PROD00021063 Blueprint for desired locations for ultrasonic flow meters PROD00021064 3/20/2009 Report on Remove CC dependency for SI and RHR System Fault Trees PROD00021065 5/26/2009 V.SPA.08.008, Addendum 2 - SDP Quantification PROD00021066 V.SPA.08.008, Addendum 11 CC-HELB SDP Event Trees PROD00021067 Report on interactions between high energy piping and cooling water (CL) that also affects component cooling (CC)

PROD00021068 5/11/2009 CCHELB/Flooding Program Direction PowerPoint PROD00021069 3/20/2009 Program Engineering: Significance Determination Process: Issue Status Report PROD00021070 3/20/2009 Program Engineering: Significance Determination Process: Issue Status Report: Summary of Open Issues PROD00021071 4/3/2009 Program Engineering: Significance Determination Process: Issue Status Report: Summary of Open Issues 39

Document Number Description PROD00021072 4/10/2009 Program Engineering: Significance Determination Process: Issue Status Report: Summary of Open Issues PROD00021073 4/17/2009 Program Engineering: Significance Determination Process: Issue Status Report: Summary of Open Issues PROD00021074 4/17/2009 Program Engineering Significance Determination Process: Issue Status Report: Summary of Open Issues PROD00021075 4/24/2009 Program Engineering Significance Determination Process: Issue Status Report: Summary of Open Issues PROD00021076 4/30/2009 Program Engineering Significance Determination Process: Issue Status Report: Summary of Open Issues PROD00021077 5/15/2009 Program Engineering Significance Determination Process: Issue Status Report: Summary of Open Issues PROD00021078 5/15/2009 Program Engineering Significance Determination Process: Issue Status Report: Summary of Open Issues PROD00021079 5/22/2009 Program Engineering Significance Determination Process: Issue Status Report: Summary of Open Issues PROD00021080 5/29/2009 Program Engineering Significance Determination Process: Issue Status Report: Summary of Open Issues PROD00021081 2/9/2009 email from R Rohrer to S Myers cc M Huling re CC piping in the turbine building PROD00021082 List of issues related to inoperability of 11 AFW pump and Human Error Probability that was calculated for recovery of it PROD00021083 Control Room Evacuation (Fire) Procedure rev 40 effective date 9/12/2008 PROD00021084 Job Performance Measure: F5 Appendix B, Attachment A - Unit 1 Shift Supervisor Actions rev 6 PROD00021085 Preliminary Scoping Analysis for Fire Risk with 11 AFW pump Unavailable for 10 Days PROD00021086 Fire Area 20 Ignition Source Bin - 11AFW pump was sole means of decay heat removal PROD00021087 Information relative to all fire areas where 11AFW pump was sole means of decay heat removal PROD00021088 Significance Determination Process (SDP) Phase 3 for CAP 01132098 "11 AFW pump stopped due to turbine bearing high temp" and CAP 01146006 "Mispositioned block valve on 11 TDAFWP" and attachments PROD00021089 Workbook containing baseline cutset results for the PINGP, Revision 2.2 PRA model and cutset results for the 11 TDAFW Pump unavailability using the PINGP, Revision 2.2 PRA model PROD00021090 Restarting Unit 1AFWP After Low Suction/Discharge Pressure Trip Procedure rev 3 PROD00021091 Heat Sink Rev 4 and Background Information for 1F-0.3 Heat Sink Status Tree PROD00021092 Response to Loss of Secondary Heat Sink Rev 14 effective 1/11/2008 PROD00021093 Transfer to Recirculation with one Safeguard Train Out of Service Rev 15 PROD00021094 Alarm Response Procedure for Feedwater Pump Rev 41 PROD00021095 Control Room Panel spreadsheet PROD00021096 Fire Hazard Analysis Procedure Rev 21 effective date 3/1/2008 PROD00021097 5/7/2001 blueprint/diagram of Cable Tray System - Ground Floor Plan AFW Pump Room - Class I Area Fire Area 31 and 32 PROD00021098 5/7/1998 blueprint/diagram of Cable Tray System - Ground Floor Plan AFW Pump Room - Class I Area Fire Area 31 and 32 rev 0 PROD00021099 Fire Significance Determination Process (SDP) Phase 1 and 2 CAP 01132098 "11 AFW Pump Stopped Due to Turbine Outboard Bearing High Temp" PROD00021100 Fire Significance Determination Process (SDP) Phase 1 and 2 CAP 01132098 "11 AFW Pump Stopped Due to Turbine Outboard Bearing High Temp" PROD00021101 1/20/2006 NRC letter to PINGP re PINGP Event Follow-up Inspection Report 40

Document Number Description PROD00021102 12/1/2008 Letter from T Greene (MPR Associates Inc) to G Wheelock (Xcel) re Prairie Island Unit One - Turbine-Driven Auxiliary Feedwater Pump Assessment of High-Temperature Operation of the Outboard Turbine Bearing PROD00021103 Blueprint/diagram of Flow Diagram Unit 1 Feedwater System PROD00021104 Blueprint/diagram of General Arrangement Unit 1 & 2 Control Room PROD00021105 7/27/1994 Blueprint/diagram of Main Control Board panel A-1 Arrangement PROD00021106 10/21/1993 Blueprint/diagram of Main Control Board panel A-1 & A-2 Arrangement PROD00021107 5/7/1992 Blueprint/diagram of Main Control Board Panel A-2 Arrangement PROD00021108 Blueprint/diagram of Unit 1 Main Control Board Panel E-1 Arrangement Sheet 1 of 2 PROD00021109 Blueprint/diagram of Main Control Board Panel E-1 Arrangement Sheet 2 of 2 PROD00021110 6/21/1991 Blueprint/diagram of Main Control Board Panel F-1 Arrangement PROD00021111 Blueprint/diagram of Main Control Board panel E-2 PROD00021112 Blueprint/diagram of Main Control Board G Panel - Units 1 and 2 General Arrangement PROD00021113 Blueprint/diagram of Cable Tray System Ground Floor Plan Turbine Room Class I Area PROD00021114 10/27/1969 Blueprint/diagram of Cable Tray System- Sections Turbine Room Class I Area PROD00021115 Blueprint/diagram of Conduit Layout - Ground Floor Area Unit 1 Turbine Building PROD00021116 Blueprint/diagram of Conduit Layout Ground Floor Columns E to G and 8 to 10 PROD00021117 11/2/1994 Blueprint/diagram of Main Control Board Modification Panel B=1 Arrangement PROD00021118 11/19/1984 Blueprint/diagram of Main Control Board Modification Panel C-1 Arrangement PROD00021119 Blueprint/diagram of Main Control Board Modification Panel D-1 Arrangements PROD00021120 11/7/2008 NRC letter to PINGP re PINGP NRC Special Inspection Report Preliminary White Finding PROD00021121 1/20/2006 NRC letter to PINGP re PINGP Event Follow-up Inspection Report PROD00021122 Preliminary Scoping Analysis for Fire Risk with 11 AFW pump Unavailable for 10 Days PROD00021123 12/17/2008 NRC Question Response Form re control room heat-up following loss of safeguards chilled water PROD00021124 12/17/2008 NRC Question Response Form re AFW pump and relay room analysis PROD00021125 12/18/2008 NRC Question Response Form re basis for HRA timing values for local TDAFW pump operation PROD00021126 12/17/2008 NRC Question Response Form re effect Performance Shaping Factors have on local AFW pump operation PROD00021127 Significance Determination Process (SDP) Phase 3 for CAP 01132098 "11 AFW pump stopped due to turbine bearing high temp" and CAP 01146005 "Mispositioned block valve on 11 TDAFWP" and attachments PROD00021128 Significance Determination Process (SDP) Phase 3 for CAP 01132098 "11 AFW pump stopped due to turbine bearing high temp" and CAP 01146006 "Mispositioned block valve on 11 TDAFWP" and attachments PROD00021129 Significance Determination Process (SDP) Phase 3 for CAP 01132098 "11 AFW pump stopped due to turbine bearing high temp" and CAP 01146006 "Mispositioned block valve on 11 TDAFWP" and attachments PROD00021130 Significance Determination Process (SDP) Phase 3 for CAP 01132098 "11 AFW pump stopped due to turbine bearing high temp" and CAP 01146005 "Mispositioned block valve on 11 TDAFWP" and attachments PROD00021131 Significance Determination Process (SDP) Phase 3 for CAP 01132098 "11 AFW pump stopped due to turbine bearing high temp" and CAP 01146005 "Mispositioned block valve on 11 TDAFWP" and attachments 41

Document Number Description PROD00021132 Significance Determination Process (SDP) Phase 3 for CAP 01132098 "11 AFW pump stopped due to turbine bearing high temp" and CAP 01146005 "Mispositioned block valve on 11 TDAFWP" and attachments PROD00021133 Significance Determination Process (SDP) Phase 3 for CAP 01132098 "11 AFW pump stopped due to turbine bearing high temp" and CAP 01146005 "Mispositioned block valve on 11 TDAFWP" and attachments PROD00021134 Significance Determination Process (SDP) Phase 3 for CAP 01132098 "11 AFW pump stopped due to turbine bearing high temp" and CAP 01146005 "Mispositioned block valve on 11 TDAFWP" and attachments PROD00021135 Significance Determination Process (SDP) Phase 3 for CAP 01132098 "11 AFW pump stopped due to turbine bearing high temp" and CAP 01146005 "Mispositioned block valve on 11 TDAFWP" and attachments PROD00021136 Significance Determination Process (SDP) Phase 3 for CAP 01132098 "11 AFW pump stopped due to turbine bearing high temp" and CAP 01146006 "Mispositioned block valve on 11 TDAFWP" and attachments PROD00021137 Significance Determination Process (SDP) Phase 3 for CAP 01132098 "11 AFW pump stopped due to turbine bearing high temp" and CAP 01146006 "Mispositioned block valve on 11 TDAFWP" and attachments PROD00021138 Report on actions and timeline before determination 11 or 22 AFW pumps are running following control room abandonment PROD00021139 V.SPA.08.002 11 TDAFW Pump SDP Analysis PROD00021140 1975 Fluor Pioneer Inc documents re Pump Suction Line Unit 1 including Pipe-Stress Input Data PROD00021141 9/12/1975 Unit 1 - PI Feedwater Discharge and Piping Loads on Equipment PROD00021142 PI Unit 1 FW Discharge Dead Weight Analysis and Pipe-Stress Input Data PROD00021143 8/14/1975 Fluor Pioneer Inc Pipe-Stress Deadweight Analysis PROD00021144 Write-up of information contained within AES turbine building HELB calculations relevant to CC / HELB SDP PROD00021145 2/24/2009 Design Information Transmittal re CC piping location relative to HELB locations for evaluation of jet impingement PROD00021146 2/25/2009 Design Information Transmittal re Peak HELB pressure for evaluation of the cold chemistry lab PROD00021147 2/25/2009 Design Information Transmittal re Peak HELB pressure for evaluation of the cold chemistry lab PROD00021148 3/10/2009 Design Information Transmittal re CC piping location relative to HELB locations for evaluation of jet impingement PROD00021149 3/9/2009 Design Information Transmittal re Evaluation of jet impingement on CC piping PROD00021150 3/9/2009 Design Information Transmittal re CC piping location relative to HELB locations for evaluation of jet impingement PROD00021151 3/10/2009 Design Information Transmittal re CC piping location relative to HELB locations for evaluation of jet impingement PROD00021152 12/29/2008 Letter from A Setlur (Automated Engineering Services Corp) to S Ford (Xcel) re Proposal to Perform Evaluation of Vulnerability of CC Piping in TB to HELB Events - Phase 1 PROD00021153 1/12/2009 Letter from A Setlur (Automated Engineering Services Corp) to S Ford (Xcel) re Seismic Level Evaluation of FW, CD and CC in the TB PROD00021154 1/18/2009 Letter from A Setlur (Automated Engineering Services Corp) to B Slack (Xcel) re Proposal to Qualify Cold Chem Lab Masonry Block Walls and Roof for HELB and Seismic Loads 42

Document Number Description PROD00021155 2/12/2009 Letter from A Setlur (Automated Engineering Services Corp) to B Slack (Xcel) re Proposal to Perform Safety Related Evaluation of the Effects of Jet Impingement on CC Piping in the Turbine Building (TB) at PINGP PROD00021156 3/4/2009 Letter from A Setlur (Automated Engineering Services Corp) to B Slack (Xcel) re Request for Scope Change Funding for Evaluation of FW, CD and CC in the TB - PO 996-59 PROD00021157 3/20/2009 Calculation Package for Evaluation of the Effects of Jet Impingement on Component Cooling Piping in the Turbine Building and attachments PROD00021158 3/13/2009 Calculation Package for Evaluation of the Effects of Jet Impingement on Component Cooling Piping in the Turbine Building and attachments PROD00021159 6/26/2009 Calculation Package for Jet Impingement Loads on Component Cooling Piping in the Turbine Building for PRA HELB Scenarios PROD00021160 2/20/2009 Request for Phased Approval re CC HELB interaction structural analysis PROD00021161 2/3/2009 Request for Phased Approval re CC HELB interaction structural analysis PROD00021162 blueprint/diagrams of component cooling water system PROD00021163 blueprint/diagrams of component cooling water system PROD00021164 6/17/2009 email from B Slack to D Henry cc C Kandalepas and D Setlur re jet impingement analysis on CC Piping PROD00021165 3/21/1975 blueprint/diagram of component cooling water/sample system cooling water from DP 5 & 2 PROD00021166 blueprint/diagram of component cooling water system/sample system cooling water from DP-2 PROD00021167 4/4/1975 blueprint/diagram of component cooling water system/generator cooling return PROD00021168 3/21/1975 blueprint/diagram Component Cooling Water System/Sample System Cooling Water From DP 2 and 5, Unit 2

PROD00021169 4/4/1975 blueprint/diagram Component Cooling Water System/C-C Water Return to H2 Generator PROD00021170 10/9/1973 blueprint/diagram Component Cooling Water System/From Cold Sample Cond. Rack to 3" RE-T Crossover PROD00021171 9/25/1973 blueprint/diagram Component Cooling Water System/From Cold Sample Cond. Rack to 3" RE-T Crossover PROD00021172 1/3/1974 blueprint/diagram Component Cooling Water System/From Cold Sample Cond. Rack to 3" RE-T Crossover PROD00021173 3/21/1975 blueprint/diagram Component Cooling Water System/From Cold Sample Cond. Rack to 3" Return Crossover PROD00021174 3/21/1975 blueprint/diagram Component Cooling Water System/From Turbine Cycle & Grab Sample to 2" Return Line PROD00021175 3/26/1973 blueprint/diagram Component Cooling Water System/Relief Valve (Cold Chem Lab) Vent & Drain (2" Return Line)

PROD00021176 3/21/1975 blueprint/diagram Component Cooling Water System/Cooling Water Return From Cold Chem Lab Chiller Unit PROD00021177 3/21/1975 blueprint/diagram Component Cooling Water System/Comp. Cooling from Manifold & Pump Assembly 22 PROD00021178 blueprint/diagram Component Cooling Water System/Comp. Cooling from Manifold & Pump Assembly 25 PROD00021179 9/10/1974 blueprint/diagram Component Cooling Water System/H2 Generator Cooling Return PROD00021180 blueprint/diagram Component Cooling Water System/Sample System Cooling to DP-5 PROD00021181 3/21/1975 blueprint/diagram Component Cooling Water System/Sample System Cooling Water Supply to Unit 2 PROD00021182 blueprint/diagram Component Cooling Water System/Sample System Cooling Water to DP-2 PROD00021183 4/4/1975 blueprint/diagram Component Cooling Water System/Component Cooling Water to H2 Generator 43

Document Number Description PROD00021184 4/4/1975 blueprint/diagram Component Cooling Water System/C-C Water Supply to H2 Generator PROD00021185 4/4/1975 blueprint/diagram Component Cooling Water System/C-C Water Supply to H2 Generator PROD00021186 8/24/1973 blueprint/diagram Component Cooling Water System/From 3" Supply Line to Cold Chem Lab PROD00021187 6/25/1973 blueprint/diagram Component Cooling Water System/From 3" Supply Line to Cold Chem Lab PROD00021188 3/21/1975 blueprint/diagram Component Cooling Water System/From 3" Supply Line to Cold Chemical Laboratory PROD00021189 3/21/1975 blueprint/diagram Component Cooling Water System/From 2" Supply Line to Turbine Cycle & Grab Sample Panel PROD00021190 3/21/1975 blueprint/diagram Component Cooling Water System/From Cooling Water to Cold Chem Lab Chiller Unit PROD00021191 3/21/1975 blueprint/diagram Component Cooling Water System/Comp. Cooling from Manifold & Pump Assembly 22 PROD00021192 blueprint/diagram Component Cooling Water System/Comp. Cooling from Manifold & Pump Assembly 25 PROD00021193 TB CC Piping Isometric Drawings PROD00021194 Testing and Computer Code Evaluation re AP1000 reactor design PROD00021195 7/12/1971 Piping Loads on Equipment for Condensate Piping Turbine Building, Unit 2 PROD00021196 2/20/2009 Contract Change Request Scope of Work Change Statement for Project 11186132 PROD00021197 3/11/2009 Contract Change Request Scope of Work Change Statement for Project 11186132 re HELB sensitivity study PROD00021198 3/16/2009 re Design Review Comment Form for EC 13929 PROD00021199 3/16/2009 re Design Review Comment Form for EC 13929 PROD00021200 4/15/2009 Engineering Change for Evaluation of the Effects of HELB Jet Impingement on CC Piping in the Turbine Building PROD00021201 3/13/2009 External Design Document Suitability Review Checklist re Evaluation of the effects of Jet Impingement on CC piping in the turbine bldg PROD00021202 3/13/2009 Design Review Comment Form re AES Calculation PI-996-61-M01 / Evaluation of the Effects of Jet Impingement on CC piping in the Turbine Bldg PROD00021203 3/13/2009 Design Review Comment Form re AES Calculation PI-996-61-M01 / Evaluation of the Effects of Jet Impingement on CC piping in the Turbine Bldg PROD00021204 11/25/2008 Engineering Change re Determination of Number of High Energy Pipe Sections Affecting Turbine Bldg CC Piping Using EPRI Methodology and attached PINGP Calculation dated 11/17/2008 PROD00021205 3/5/2009 Engineering Change 13762 re Evaluation of Turbine Bldg 695' Elevation Temperatures after a HELB and attachments PROD00021206 3/20/2009 Engineering Change 13929 re Evaluation of Turbine Bldg 695' Elevation Temperatures and Humidities after a HELB (This Eval Supersedes EC 13762) and attachments PROD00021207 5/14/2009 Engineering Change 13974 re Evaluation of the Effects of HELB Jet Impingement on CC Piping in the Turbine Building and attachments PROD00021208 1/12/2009 email from B Slack to D Setlur cc C Agan re HELB Impact on CC Piping in TB PROD00021209 1975 Fluor Pioneer Inc documents re Pump Suction Line Unit 1 including Pipe-Stress Input Data PROD00021210 5/10/1974 Piping Loads on Equipment for Condensate Piping Turbine Building and Pipe-Stress Thermal Expansion Analysis 44

Document Number Description PROD00021211 4/24/2007 AT-0175 Action Request Record Report re Internal Flood Design Deficiencies and attachments PROD00021212 Question 44: Perform orifice flow calculations for susceptible CD and FW lines to verify the PRA break frequency assumptions in action 04 (leak rates greater than 2000 gpm)

PROD00021213 Book PI-224-8.1 Part F Fluor Pioneer Inc documents including Pipe-Stress Data Input PROD00021214 7/12/1971 Piping Loads on Equipment for Condensate Piping Turbine Building, Unit 2 PROD00021215 6/2/2009 Letter from E Bird (MPR Associates Inc) to B Slack (Xcel) re Prairie Island HELB Analysis PROD00021216 data: run time 7/9/2005 at 9:12:15 PROD00021217 data: run time 7/9/2005 at 10:34:26 PROD00021218 data: run time 7/9/2005 at 10:55:13 PROD00021219 data: run time 8/11/2005 at 08:51:14 PROD00021220 data: run time 8/11/2005 at 09:09:55 PROD00021221 Control Volumes data PROD00021222 8/25/2005 Calculation Sheet re Turbine Building HELB Pressure Analysis PROD00021223 2/16/2009 email from D Setlur to B Slack cc S Ford and others re project costs for CD Piping in TB and Cold Chem Lab Structure Qualification PROD00021224 2/20/2009 Scope of Services for Project 11186132 re Advent conducting sensitivity study of the 695' elevation of the Turbine Building HELB temperatures PROD00021225 2/20/2009 Scope of Services for Project 11186132 re: AES will perform safety related evaluation of effects of jet impingement on CC piping in turbine building PROD00021226 2/3/2009 Request for Phased Approval re CC HELB interaction structural analysis PROD00021227 7/12/1971 Thermal Analysis - Condensate Piping Unit 2 Class III Piping PROD00021228 Problem Statement re: design of CC piping located in Turbine Building PROD00021229 PINGP Component Cooling Water / Turbine Building SDP Issue Risk Significance PROD00021230 Prairie Island Turbine Building HELB Interaction with Component Cooling Piping PROD00021231 Problem Statement re: Cooling Component piping located in the turbine Building not designed to protect the safety-related functions of the Cooling Component System from hazards occurring in the Turbine Building PROD00021232 2/20/2009 email from R. Rohrer to D. Setlur of AES Engineering re: Potential interaction between high energy piping in turbine building and component cooling water piping PROD00021233 Significance Determination Process re: CAP 01146004 - Mispositioned block valve on 11 TDAFWP PROD00021234 6/12/2009 Email from D. Malek to R. Rohrer re: NRC conference call notes PROD00021235 6/12/2009 Email from R. Rohrer to J. Masterlark at EPM, Inc. re: NRC conference call notes PROD00021236 11/7/2008 Email from T. Asmus to R. Rohrer re: PRA Validation PROD00021237 Determination of 11 TD AFWP Risk Significance Action Plan/Milestones PROD00021238 11/4/2008 Management Oversight Meeting notes re: TDAFW pump PROD00021239 11/6/2008 Email from M. Huting to J. Masterlark and R. Rohrer re: PRA Validation PROD00021240 3/4/2009 Email from R. Rohrer to R. Ray re: CC/HELB assessment PROD00021241 2/10/2009 Email from R. Rohrer to M. Huting re: Questions on CC SDP 45

Document Number Description PROD00021242 Apparent Cause Evaluation for missed HELB and CC system interaction PROD00021243 Apparent Cause Evaluation for CC lines affected by 7/2006 HELB PROD00021244 10/7/2009 Email from C. Koehler to R. Rohrer re: Summary of Refueling Cavity Leakage Meeting PROD00021245 AFW Pump SDP Issues Update PROD00021246 11/3/2008 Email from M. Huting to S. Northard, M. Wadley, J. Sorensen and others at Xcel re: preliminary results of SDP on AFW pump PROD00021247 Significance Determination Process (SDP) Phase 3 Report re: 11 TDA FW Pump PROD00021248 Project task list and status for CC HELB and internal flooding program PROD00021249 Regulatory Scenarios for EAL and TB Flooding Findings PROD00021250 4/14/2010 Licensing Issue Team Update re: Potential White Findings PROD00021251 4/14/2010 Licensing Issue Team Update re: Turbine Building Flooding SDP PROD00021252 4/7/2010 Licensing Issue Team Update re: CC HELB 95001 PROD00021253 4/7/2010 Licensing Issue Team Update re: EAL RA 1.1 and 1.2 PROD00021254 4/7/2010 Licensing Issue Team Update re: Turbine Building Flooding SDP PROD00021255 2/19/2010 Email from T. Roddey to D. Kettering, K. Ryan, B. Sawatzke, M. Schimmel, and others at Xcel re: Meeting with K. Stoedter at NRC and support for SDP determination PROD00021256 1/16/2009 Risk Assessment Approach for HELB Interaction with CC Piping in Turbine Building PROD00021257 11/4/2008 Email from M. Huting to J. Anderson, M. Wadley, M. Schimmel, and others at Xcel re: PRA validation process PROD00021258 Q&A for Star Tribune Interview re: NRC preliminary findings PROD00021259 2/9/2009 Email from R. Rohrer to S. Myers and M. Huting re: Questions on CC SDP PROD00021260 1/8/2010 Email from T. Roddey to R. Rohrer and others at Xcel re: AES Combined Stress Analysis PROD00021261 2/16/2009 Email from R. Rohrer to P. Knoespel at EPM, Inc. and others at Xcel re: Calculation of HEP related to CC HELB SDP PROD00021262 5/15/2010 Email from D. Potter to R. Rohrer, M. Huting, and R. Dremel re: cast iron valves PROD00021263 2/19/2009 Email from R. Rohrer to E. Weinkam re: CC/HELB issue PROD00021264 CC/HELB SDP MAAP Case to Model RCP Seal LOCA PROD00021265 6/4/2009 Email from M. Huting to J. Anderson, G. Salamon, D. Koehl, and others at Xcel re: CC/HELB issue and NRC discussion PROD00021266 3/13/2009 Email from D. Price to R. Sloss, R. Rohrer, and others at Xcel re: contract requisition for CC/HELB issue PROD00021267 3/13/2009 Email from D. Price to R. Sloss, R. Rohrer, and D. Peckman re: contract requisitions for CC/HELB issue PROD00021268 3/13/2009 Email from R. Sloss to R. Rohrer, D. Peckman, and D. Price re: contract requisitions for CC/HELB issue PROD00021269 3/13/2009 Email from R. Rohrer to R. Sloss and S. Skoyen re: contract requisitions for CC/HELB issue PROD00021270 6/1/2009 Email from J. Anderson to R. Rohrer, D. Potter, and G. Salamon re: estimated date for internal flooding analysis PROD00021271 6/24/2009 Email from R. Rohrer to J. Ritter re: determination of seismic risk for CC/HELB SDP PROD00021272 Spreadsheet titled Turbine Building HELB-Induced Loss of Component Cooling Water Event 46

Document Number Description PROD00021273 3/1/2009 Summary of PINGP Component Cooling Water/Turbine Building Issue Risk Significance PROD00021274 2/27/2009 Summary of PINGP Component Cooling Water/Turbine Building Issue Risk Significance PROD00021275 11/5/2008 Email from D. Malek to M. Davis and R. Rohrer re: summary of meeting with K. Stoeder PROD00021276 4/21/2010 Email from R. Rohrer to J. Anderson re: LIT updates PROD00021277 4/21/2010 Licensing Issue Team (LIT) Update re: Turbine Building Flooding SDP PROD00021278 6/11/2009 Email from R. Rohrer to D. Malek re: summary of NRC conference call PROD00021279 1/7/2010 Email from R. Dremel to R. Rohrer re: Flooding SDP Schedule PROD00021280 Document titled Information Needs for SDP Evaluation PROD00021281 8/25/2009 Email from J. Ritter to R. Rohrer re: TB Flooding Schedule/Cost PROD00021282 1/16/2009 Email from R. Rohrer to J. Ritter and M. Brossart re: PRA Risk Assessment Approach for HELB/CC SDP PROD00021283 11/5/2008 Email from S. Northard to M. Huting, J. Anderson, M. Wadley and others at Xcel re: PRA Validation PROD00021284 6/17/2009 Email from R. Rohrer to J. Ritter re: Draft of NRC responses PROD00021285 2/27/2009 Email from R. Rohrer to C. Koehler re: RCP Seal LOCA Information PROD00021286 10/15/2009 Email from C. Koehler to R. Ray and R. Rohrer re: recent engineering activities PROD00021287 11/7/2008 Email from R. Rohrer to J. Ritter re: Summary of SDP Discussion with NRC PROD00021288 11/7/2008 Email from R. Rohrer to J. Ritter and others at Xcel re: Summary of SDP Discussion with NRC PROD00021289 12/22/2008 Email from E. Weinkam to M. Huting, M. Wadley, S. Northard, and others at Xcel re: Summary of SDP issues PROD00021290 12/23/2008 Email from M. Huting to E. Weinkam, M. Wadley, S. Northard, and others at Xcel re: Summary of SDP issues PROD00021291 Document titled Success Path #1: Unit 2 RMU System Remains Available Following the Unit 1 HELB event PROD00021292 11/7/2008 Email from J. Ritter to J. Masterlark, R. Rohrer, and others at Xcel re: Summary of SDP Discussion with NRC PROD00021293 11/6/2008 Summary of Discussion with NRC on SDP Issues PROD00021294 12/19/2008 Email from M. Huting to M. Wadley, S. Northard, D. Koehl, and others at Xcel re: Summary of SDP issues PROD00021295 RCE Report titled No HELB Flooding Calculation for the Turbine Building (4/14/2009)

PROD00021296 1/16/2009 Program Engineering SDP Issue Status Report PROD00021297 11/19/2008 Report Summary: Cooling component in turbine building - HELB Issues PROD00021298 11/19/2008 Table of SDP and HELB Issue occurrences PROD00021299 11/18/2008 Computer log re HELB Issues PROD00021300 11/20/2008 Cutsets with Descriptions Report re HELB Issues PROD00021301 11/20/2008 Cutsets with Descriptions Report Table re HELP PROD00021302 11/18/2008 Computer log showing CC piping in turbine building - HELB Issues file were read PROD00021303 Comments re B. Slack's HELB revision PROD00021304 7/15/2009 Handwritten note re Inspection report PROD00021305 7/22/2009 Xcel Energy Team Notes: Prairie Island newsletter PROD00021306 Notes re review of NRC Inspection report 2009010 47

Document Number Description PROD00021307 Pages from RASP Manual Vol. 2 with handwritten notes PROD00021308 White paper for CC/HELB Outcome and Continued Efforts re 7/9/2009 NRC SDP assessment PROD00021309 White paper for CC/HELB Outcome and Continued Efforts re 7/9/2009 NRC SDP assessment PROD00021310 5/15/2009 CC-HELB Team Meeting Summary PROD00021311 5/15/2009 CC-HELB Team Meeting Summary PROD00021312 2/3/2009 Email from J. Gahlhar to B. Homer re temperature impact of loss of component cooling PROD00021313 Action #11 report prepared by B. Homer re temperature impact of component cooling loss PROD00021314 1/27/2009 Email from B. Horner to D. Lapcinski re support for the turbine building HELB analysis PROD00021315 Response to Question re effect on temperature if loss of component cooling occurs prepared by C. Sansome PROD00021316 1/20/2009 Email from M. Loosbrock to J.Ritter, B. Horner, and M. Brossart re time estimate for operators to recognize component cooling break PROD00021317 Note re component cooling water inventory prepared by B. Horner PROD00021318 2/5/2009 Letter from A. Washburn of Sulzer Pumps to S. Skoyen re pump activity and loss of cooling component water inventory PROD00021319 3/9/2009 Record of telephone conversation between B. Horner and J. Grebin of Edelmann & Assoc. re HELB issue PROD00021320 Photocopy of NRC Question Response form dated 11/5/2008 re interaction of high energy piping and component cooling system in turbine building PROD00021321 1/29/2009 Write-up of information contained within AES turbine building HELB calculations by B. Slack PROD00021322 2/17/2009 Write-up re PRA assumptions for CD and FW line breaks PROD00021323 2/6/2009 Email from J. Kempkes to B. Horner re pump operation with loss of coolant inventory PROD00021324 2/6/2009 Email from J. Kempkes to J. Ritter re operators' actions if valve unable to be opened remotely PROD00021325 2/10/2009 Email from B. Horner to J. Ritter re HELB piping PROD00021326 1/16/2009 Record of Telephone Conversation between B. Horner and E. Colvin of Westinghouse re RCP seal injection water temperature maximum allowable limit PROD00021327 2/9/2009 Email from J. Ritter to PINGP engineers re updates to HELB/CC interaction project PROD00021328 Spreadsheet re interaction of HELB/CC/FW piping PROD00021329 Calculations re water level in CC surge tank and CC tubing rupture PROD00021330 Calculations re draindown time of CC surge tank following a pipe break in the turbine building PROD00021331 Report re CC surge tank draindown following a tubing rupture PROD00021332 3/9/2009 Record of telephone conversation between B. Horner and J. Grebin of Edelmann & Assoc re NPSH requirements for Goulds 3196 model pump PROD00021333 3/31/2009 Record of telephone conversation between B. Horner and B. Lutz of Westinghouse re testing of o-ring ultimate failure PROD00021334 4/6/2009 Revised report re activation of fire protection system during HELB event PROD00021335 3/25/2009 Revised report re staffing policies/procedures PROD00021336 Write-up of Action 28 and 29 calculations including emailed comments PROD00021337 3/13/2009 Report re interaction of high energy and cooling component piping in turbine building 48

Document Number Description PROD00021338 Determination of average CC surge tank level for input into the CC/HELB risk analysis PROD00021339 V.SPA.08.008 Addendum 10: 21 Component Cooling Water Surge Tank Level Calculation PROD00021340 Spreadsheet with values corresponding to 21 CC surge tank levels over time PROD00021341 Excel file of grafts depicting CC Surge tank level over time PROD00021342 Excel files with grafts depicting CC Surge Tank levels over time PROD00021343 Spreadsheet with values corresponding to 21 CC surge tank levels over time PROD00021344 Spreadsheet with values corresponding to 21 CC surge tank levels over time PROD00021345 3/8/2009 Memo from D. Malek to S. Northard re status of the turbine building HELB/CC piping significant determination process PROD00021346 3/9/2009 Memo from D. Malek to S. Northard re status of the turbine building HELB/CC piping significant determination process PROD00021347 3/10/2009 Memo from D. Malek to S. Northard re status of the turbine building HELB/CC piping significant determination process PROD00021348 3/11/2009 Memo from D. Malek to S. Northard re status of the turbine building HELB/CC piping significant determination process PROD00021349 3/12/2009 Memo from D. Malek to S. Northard re status of the turbine building HELB/CC piping significant determination process PROD00021350 3/13/2009 Memo from D. Malek to S. Northard re status of the turbine building HELB/CC piping significant determination process PROD00021351 3/16/2009 Memo from D. Malek to S. Northard re status of the turbine building HELB/CC piping significant determination process PROD00021352 3/17/2009 Memo from D. Malek to S. Northard re status of the turbine building HELB/CC piping significant determination process PROD00021353 3/18/2009 Memo from D. Malek to S. Northard re status of the turbine building HELB/CC piping significant determination process PROD00021354 3/19/2009 Memo from D. Malek to S. Northard re status of the turbine building HELB/CC piping significant determination process PROD00021355 3/20/2009 Memo from D. Malek to S. Northard re status of the turbine building HELB/CC piping significant determination process PROD00021356 3/23/2009 Memo from D. Malek to S. Northard re status of the turbine building HELB/CC piping significant determination process PROD00021357 3/24/2009 Memo from D. Malek to S. Northard re status of the turbine building HELB/CC piping significant determination process PROD00021358 3/25/2009 Memo from D. Malek to S. Northard re status of the turbine building HELB/CC piping significant determination process PROD00021359 3/26/2009 Memo from D. Malek to S. Northard re status of the turbine building HELB/CC piping significant determination process 49

Document Number Description PROD00021360 3/27/2009 Memo from D. Malek to S. Northard re status of the turbine building HELB/CC piping significant determination process PROD00021361 3/30/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021362 3/31/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021363 4/1/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021364 4/2/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021365 4/5/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021366 4/6/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021367 4/7/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021368 4/8/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021369 4/9/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021370 4/10/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021371 4/13/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021372 4/14/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021373 4/15/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021374 4/16/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021375 4/17/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021376 4/19/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021377 4/20/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process 50

Document Number Description PROD00021378 4/21/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021379 4/22/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021380 4/23/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021381 4/24/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021382 4/27/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021383 4/28/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021384 4/29/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021385 4/30/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021386 5/1/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021387 5/4/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021388 5/5/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021389 5/6/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021390 5/7/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021391 5/8/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021392 5/12/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021393 5/13/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021394 5/14/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021395 5/15/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process 51

Document Number Description PROD00021396 5/18/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021397 5/19/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021398 5/20/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021399 5/21/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021400 5/22/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021401 6/1/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021402 5/29/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021403 6/1/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021404 6/1/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021405 6/3/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021406 6/9/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021407 6/10/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021408 6/12/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021409 6/15/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021410 6/18/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021411 6/24/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021412 6/29/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021413 7/2/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process 52

Document Number Description PROD00021414 4/6/2009 Memo from D. Malek to K. Ryan re status of the turbine building HELB/CC piping significant determination process PROD00021415 3/8/2009 Memo from D. Malek to S. Northard re status of the turbine building HELB/CC piping significant determination process PROD00021416 12/13/2007 Revisions to Flow diagram unit 1 & 2 cooling water - screenhouse PROD00021417 6/14/2004 Revisions to Flow diagram Unit 1 Cooling water - turbine building PROD00021418 1/20/2005 Revisions to Flow Diagram - Unit 1 cooling water - aux. bldg PROD00021419 2/28/2005 Revisions to Flow diagram Unit 1 Cooling Water - containment PROD00021420 2/28/2007 Revisions to Flow diagram Unit 2 cooling water - turbine building PROD00021421 10/1/2008 Revisions to Flow diagram Unit 2 Cooling water Aux. Bldg PROD00021422 10/1/2008 Revisions to Flow diagram Unit 2 cooling water - containment PROD00021423 4/3/1997 Revisions to Flow diagram Piping ISO Cooling Water A-6607 PROD00021424 12/13/2007 Revisions to Flow diagram Unit 1& 2 Cooling Water - Screenhouse PROD00021425 6/14/2004 Revisions to Flow Diagram - Unit 1 Cooling Water - Turbine Building PROD00021426 1/20/2005 Revisions to Flow Diagram - Unit 1- Cooling Water - Aux. Bldg.

PROD00021427 2/28/2005 Revision to Flow Diagram Unit 1 Cooling Water - Containment PROD00021428 2/28/2007 Revision to Flow diagram Unit 2 Cooling Water - Turbine Building PROD00021429 10/17/2008 Revision to Flow diagram Unit 2 Cooling Water Aux. Bldg.

PROD00021430 10/17/2008 Revision to Flow diagram of Unit 2 Cooling Water - Containment PROD00021431 4/3/1997 Revisions to Piping ISO Cooling Water schematic PROD00021432 12/9/2008 NRC Question Response Form re CAP000826114 - Seismic analysis PROD00021433 5/21/2009 Analysis of simulated operator failure scenarios by Scientech PROD00021434 5/21/2009 Analysis of simulated operator failure scenarios PROD00021435 Page from analysis of simulated operator errors PROD00021436 5/27/2009 Human Reliability Analysis to Support Significance Determination Process PROD00021437 Table of operator error scenarios PROD00021438 5/27/2009 Human Reliability Analysis to Support Significance Determination Process PROD00021439 Note from J. Ritter to Sonja and Sean re interaction of HELB and CC piping PROD00021440 2/23/2006 Alarm Response Procedure Rev. 39 PROD00021441 2/23/2006 Alarm Response Procedure Rev. 36 PROD00021442 8/27/2008 Alarm Response Procedure Rev. 46 PROD00021443 Alarm Response Procedure Rev. 25 PROD00021444 Table re HELB/CC Interaction PROD00021445 CC/HELB Summary PROD00021446 3/11/2009 Memo from J. Ritter to W. Scholberg re HELB/Flooding PROD00021447 11/5/2008 NRC Question Response Form re HELB/CC interaction questions PROD00021448 Table re HELB/CC Interactions 53

Document Number Description PROD00021449 Report re inputs needed to assess internal flooding PROD00021450 3/5/2009 NRC Question Response Form re likelihood of fire protection system activation in HELB event PROD00021451 4/13/2006 Abnormal Operating Procedure - Fire Protection Line Break PROD00021452 12/29/2004 Abnormal Operating Procedure - Loss of Pumping Capacity or Supply Header with out Safety Injection Signal PROD00021453 3/17/2009 Memo from M. Smutny to J. Ritter and other engineers re HELB impact on CC PROD00021454 3/17/2009 Memo from R. Calzaretta to W. Scholberg re flow calculations for Unit 1 sprinklers PROD00021455 Pipe break scenarios PROD00021456 Evaluation of flooding due to turbine building HELB PROD00021457 Spreadsheet re flooding calculations PROD00021458 Report re draindown time calculations following a tubing rupture PROD00021459 Spreadsheet re flooding event scenarios PROD00021460 Spreadsheet re flooding event scenarios PROD00021461 Spreadsheet re flooding event scenarios PROD00021462 Spreadsheet re flooding event scenarios PROD00021463 11/5/2008 NRC Question Response Form re HELB/CC interaction questions PROD00021464 12/9/2008 NRC Question Response Form re HELB issue PROD00021465 Spreadsheet re HELB/CC interactions PROD00021466 3/23/2009 Email from K. Flemming at ti-sd to J. Ritter re Break Frequency analysis PROD00021467 Spreadsheet re HELB calculations PROD00021468 Table re HELB and jet impingement PROD00021469 2/2009 Prairie Island Turbine Building 695' Elevation HELB Temperature Sensitivity Study PROD00021470 2/2009 Prairie Island Turbine Building 695' Elevation HELB Temperature Sensitivity Study PROD00021471 Note re HELB and temperature PROD00021472 5/6/2009 Operator failure simulation analysis PROD00021473 5/6/2009 Operator failure simulation analysis PROD00021474 5/6/2009 Operator failure simulation analysis PROD00021475 5/6/2009 Operator failure simulation analysis PROD00021476 3/6/2009 Operator failure simulation analysis PROD00021477 List of Procedures/documents supporting simulation analysis PROD00021478 5/9/2009 Operator failure simulation analysis PROD00021479 5/13/2009 Operator failure simulation analysis PROD00021480 5/23/2009 Operator failure simulation analysis PROD00021481 5/26/2009 Operator failure simulation analysis PROD00021482 5/27/2009 Operator failure simulation analysis PROD00021483 List of procedures/documents supporting simulation analysis PROD00021484 5/13/2009 Operator failure simulation analysis 54

Document Number Description PROD00021485 5/21/2009 Operator failure simulation analysis PROD00021486 5/23/2009 Operator failure simulation analysis PROD00021487 5/23/2009 Operator failure simulation analysis PROD00021488 5/2009 Comments re Operator failure simulation analysis PROD00021489 OLRCPVC11XT Operator failure simulation analysis - Operator fails to open VC-1-1 PROD00021490 Notes re Operator failure simulation analysis PROD00021491 5/26/2009 Operator failure simulation analysis - Operator fails to open VC-1-1 PROD00021492 5/27/2009 Operator failure simulation analysis - Operator fails to open VC-1-1 PROD00021493 List of Procedures/Documents supporting simulation analysis PROD00021494 1/8/2009 Abnormal Operating Procedure - Restarting Unit 2 AFWP after Low suction/Discharge Pressure Trip PROD00021495 5/22/2009 Operator failure simulation analysis - Operator fails to open VC-1-1 PROD00021496 Spreadsheet re CC Piping In turbine building PROD00021497 Comments re Operator failure analyses PROD00021498 4/10/2009 Comments re CC/HELB Simulator Run PROD00021499 4/17/2007 Simulator Exercise Guide - Time-Critical Operator Action PROD00021500 3/15/2008 Abnormal Operating Procedures - Loss of Condensate Supply to Auxiliary Feedwater Pump Suction PROD00021501 Procedures re emergency component cooling system PROD00021502 4/7/2009 Email from J. Grobbelaar at Curtiss Wright to J. Ritter re operator failure simulations PROD00021503 Comments re operator failure simulation analyses PROD00021504 4/1995 Job Performance Measure Worksheet re Emergency Tripping of RCP's due to Loss of Component Cooling PROD00021505 QF-1075-01 Rev. 1 Job Performance Measure re Emergency Tripping of RCP's due to Loss of CC PROD00021506 3/19/1996 Job Performance Measure Worksheet re Reactor Trip Recovery PROD00021507 Comments re Operator Failure simulations re loss of coolant accident PROD00021508 List re Simulator training frequency PROD00021509 List re simulator training frequency PROD00021510 Sequence of Events following Tornado PROD00021511 Spreadsheet re human performance/HELB PROD00021512 5/7/2009 Email from J. Ritter to R. Best re operator failure simulation analysis PROD00021513 Figure 3. Pressures for base case one inch cold leg break with ES -1.2 guideline application PROD00021514 Simulator sequence of events PROD00021515 Operator responses re failure to open VC-1-1 simulations PROD00021516 Bullet list re failure to open VC-1-1simulations PROD00021517 Comments re operator failure simulations PROD00021518 5/7/2009 Graph depicting trend in human performance simulation PROD00021519 9/7/1971 Condensate schematic PROD00021520 2/23/2009 Analysis of operator actions in simulator PROD00021521 2/23/2009 Analysis of operator actions in simulator 55

Document Number Description PROD00021522 2/27/2009 Analysis of operator actions in simulator PROD00021523 Comments re operator actions following HELB PROD00021524 Spreadsheet re time to seal loss of cooling accident PROD00021525 2/24/2009 Email from B. Johnson to D. Malek re HELB and reactor make-up in unit 1 PROD00021526 Simulator Case study on letdown isolation and impact on VCT pressure PROD00021527 3/20/2009 Letter from K. Iepson of ICE to S. Roberto re Functional Assessment for the Reactor Make-up Pump Motors and the Associated Electrical Power Supply Components PROD00021528 Spreadsheet re Leakage flow verses pressure PROD00021529 1/11/2008 Procedure for operator to cool down and depressurize RCS to Mode 5 following a loss of reactor coolant inventory PROD00021530 Procedure for operator if emergency coolant recirculation capability is restored PROD00021531 Figures re Containment temperature and pressure following PI loss of CCW due to HELB PROD00021532 Comments re operator actions to reduce RHR flow PROD00021533 ECA-1/1: procedure to transition from 1E-1 PROD00021534 Worst case scenario analysis re operator failure PROD00021535 Figure 1: RCP seal LOCA (Pressure v. Time)

PROD00021536 Plot request re operator initiated cool down parameters PROD00021537 3/24/2009 MAAP Analysis: RCP Seal LOCA with Loss of CCW PROD00021538 Comments re parameters for modeling actions post LOCA cool down and depressurization PROD00021539 Procedure path re modeling RCP seal LOCA PROD00021540 Procedure path for modeling RCP seal LOCA PROD00021541 Procedure path re modeling RCP seal LOCA PROD00021542 3/23/2009 Email from M. Smutny to J. Ritter re modeling actions following a HELB event PROD00021543 3/10/2009 Memo from D. Malek to S. Northard re status of turbine building HELB/CC piping significant determination process PROD00021544 1/12/2009 Draft memo from B. Horner to S. Northard re status of turbine building HELB/CC piping significant determination process PROD00021545 1/13/2009 Draft memo from B. Horner to S. Northard re status of turbine building HELB/CC piping significant determination process PROD00021546 1/19/2009 Memo from B. Horner to S. Northard re status of turbine building HELB/CC piping significant determination process PROD00021547 1/20/2009 Memo from B. Horner to S. Northard re status of turbine building HELB/CC piping significant determination process PROD00021548 1/20/2009 Memo from B. Horner to S. Northard re status of turbine building HELB/CC piping significant determination process PROD00021549 1/29/2009 Memo from B. Horner to S. Northard re status of turbine building HELB/CC piping significant determination process 56

Document Number Description PROD00021550 1/30/2009 Memo from B. Horner to S. Northard re status of turbine building HELB/CC piping significant determination process PROD00021551 2/10/2009 Memo from B. Horner to S. Northard re status of turbine building HELB/CC piping significant determination process PROD00021552 2/12//2009 Memo from B. Horner to S. Northard re status of turbine building HELB/CC piping significant determination process PROD00021553 2/3/2009 Memo from B. Horner to S. Northard re status of turbine building HELB/CC piping significant determination process PROD00021554 2/5/2009 Memo from B. Horner to S. Northard re status of turbine building HELB/CC piping significant determination process PROD00021555 2/6/2009 Memo from B. Horner to S. Northard re status of turbine building HELB/CC piping significant determination process PROD00021556 Power Point re meeting with NRC PROD00021557 8/5/2009 Letter from NRC to PINGP re Preliminary White finding PROD00021558 Letter from J. Ritter to Laura re CC/HELB interaction PROD00021559 6/10/2009 NRC Question Response Form re pipe description and requested documents PROD00021560 6/10/2009 NRC Question Response Form re CC/HELB interactions PROD00021561 6/10/2009 NRC Question Response Form re piping replaced PROD00021562 6/10/2009 NRC Question Response Form re piping replaced PROD00021563 6/10/2009 NRC Question Response Form re list of documents requested PROD00021564 6/10/2009 NRC Question Response Form re documents requested PROD00021565 6/10/2009 NRC Question response form re documents requested for review PROD00021566 NRC Question Response Form PROD00021567 NRC Question Response Form PROD00021568 NRC Question Response Form PROD00021569 NRC Question Response Form PROD00021570 NRC Question Response Form PROD00021571 NRC Question Response Form PROD00021572 Response to NRC Question PROD00021573 Response to NRC Question PROD00021574 Response to NRC Question PROD00021575 Response to NRC Question PROD00021576 Response to NRC Question PROD00021577 Component Cooling Water/Turbine Building SDP Issue Risk Significance PROD00021578 5/27/2009 HELB Break Analysis of the CL System PROD00021579 6/24/2009 Email from J. Ritter to C. Sansome re: analysis of the CC/HELB CL pipe break calculations PROD00021580 6/23/2009 Email from C. Sansome to J. Ritter re: analysis of CC/HELB CL pipe break calculations 57

Document Number Description PROD00021581 Risk Assessment Approach for HELB Interaction with CC Piping in the Turbine Building SDP PROD00021582 Risk Assessment Approach for HELB Interaction with CC Piping in the Turbine Building SDP PROD00021583 Significance Determination Process (SDP) Questions Component Cooling Line Interaction with HELB Piping in the Turbine Building PROD00021584 Significance Determination Process (SDP) Questions Component Cooling Line Interaction with HELB Piping in the Turbine Building PROD00021585 Risk Assessment Approach for HELB Interaction with CC Piping in the Turbine Building SDP PROD00021586 Risk Assessment Approach for HELB Interaction with CC Piping in the Turbine Building SDP PROD00021587 Risk Assessment Approach for HELB Interaction with CC Piping in the Turbine Building SDP PROD00021588 11/20/2008 Risk based analysis for CC/HELB issues PROD00021589 Risk based analysis for CC/HELB issues PROD00021590 11/19/2008 Risk based analysis for CC/HELB issues PROD00021591 Risk based analysis for CC/HELB issues PROD00021592 11/18/2008 Risk based analysis for CC/HELB issues PROD00021593 Risk based analysis for CC/LOOP issues PROD00021594 11/5/2008 NRC Question Response Form PROD00021595 Human Failure Error (HFE) Number 1: Operators Fail to Diagnose Loss of CC PROD00021596 Re-analysis of Seismic contribution to CC/HELB SDP PROD00021597 Seismic Event Modeling and Seismic Risk Quantification PROD00021598 Seismic Event Modeling and Seismic Risk Quantification PROD00021599 Analysis of seismic event PROD00021600 Analysis of seismic events PROD00021601 Risk based analysis for CC/HELB issues PROD00021602 CC Piping Adjacent to HELB Location in Turbine Building PROD00021603 Risk based analysis for CC/HELB issues PROD00021604 Risk based analysis for CC/HELB issues PROD00021605 Sensitivity Results with AFW Pump Room Flood Impacts on Equipment PROD00021606 4/29/2009 Simulator CC/HELB Scenario PROD00021607 4/29/2009 Analysis of CC HELB Scenario simulator run.

PROD00021608 Initiating Event Resulting in a Unit 2 Loss of Component Cooling PROD00021609 2008 PI Feedwater-CC HELB Issue PROD00021610 11/5/2008 NRC Question Response Form PROD00021611 3/16/2009 Email from D. Malek to M. Smutney, J. Connors, and J. Ritter re: analysis of a HELB/Loss of CC scenario PROD00021612 3/8/2009 Memorandum to S. Northard from D. Malek re: CC piping adjacent to HELB location in turbine bldg PROD00021613 External event analysis PROD00021614 5/26/2009 Memorandum to K. Ryan from D. Malek re: CC Piping Adjacent to HELB Location in Turbine bldg PROD00021615 3/5/2009 NRC Question Response Form 58

Document Number Description PROD00021616 3/5/2009 NRC Question Response Form PROD00021617 3/5/2009 NRC Question Response Form PROD00021618 1/27/2009 Success of Standby Charging Pump During Loss of CC Event PROD00021619 6/15/2009 Email from J. Ritter from J. Grobbelaar and others @ Xcel re: analysis of CC/HELB SDP - Flooding PROD00021620 2/12/2009 Memorandum to S. Northard from B. Horner re: CC Piping Adjacent to HELB Location in Turbine bldg PROD00021621 3/8/2009 Memorandum to S. Northard from D. Malek re: CC Piping adjacent to HELB Location in Turbine Bldg PROD00021622 6/5/2009 PINGP Component Cooling Water/Turbine Building Issue Risk Significance Summary of Xcel Analysis Performed PROD00021623 Report on interactions between high energy piping and cooling water (CL) that also affect component cooling (CC)

PROD00021624 Documentation of all interactions between high energy piping and cooling water (CL) that also affect component cooling (CC)

PROD00021625 Significance Determination Process CC Piping Adjacent to HELB Location in Turbine Building PROD00021626 HELB Pipe Break Frequency Calculation PROD00021627 Analysis of CC/HELB CL Flooding Event PROD00021628 6/10/2009 NRC Question Response Form PROD00021629 3/1/2009 PINGP Component Cooling Water/Turbine Building Issue Risk Significance Summary of Xcel Analysis Performed PROD00021630 Calculation Verification Checklist PROD00021631 Remove CC Dependency for SI and RHR System Fault Trees PROD00021632 6/10/2009 NRC Question Response Form PROD00021633 3/1/2009 PINGP Component Cooling Water/Turbine Building Issue Risk Significance Summary of Xcel Analysis Performed PROD00021634 3/1/2009 PINGP Component Cooling Water/Turbine Building Issue Risk significance Summary of Xcel Analysis Performed PROD00021635 External event analysis PROD00021636 3/5/2009 NRC Question Response Form PROD00021637 3/5/2009 NRC Question Response Form PROD00021638 3/5/2009 NRC Question Response Form PROD00021639 6/24/2009 Email from J. Ritter to T. Asmus and P. Knoespel re: analysis of flooding event PROD00021640 PINGP Evaluation re Limiting time for operator action to mitigate flooding effects from a HELB PROD00021641 PINGP Report titled Component Cooling Water / Turbine Building Issue Risk Significance - Summary of Xcel Analysis Performed PROD00021642 12/2/2008 email from J. Ritter to B. Slack and K. DenHerder re: HELB lines that impact the CC piping located in the Turbine Building PROD00021643 11/18/2008 email from J. Ritter to P. Knoespel, T. Asmus, and D. Malek re: Issue related to HELB interaction with Component Cooling piping located in the Turbine Building 59

Document Number Description PROD00021644 11/21/2008 letter from K. Den Herder to J. Ritter re: Responses to questions for each of the HELB lines identified in the 11/5/2008 NRC Information Request PROD00021645 Simulator scenarios re: Unit 2 RMU System remains available following the Unit 1 HELB Event and re: SI Success Path PROD00021646 NRC Question Response Form re: NRC Requests of 6/10/2009 PROD00021647 12/19/2008 email from J. Ritter to R. Best re: NRC Probabilistic Risk Assessment visit regarding possible white finding on HELB/CC issue PROD00021648 NRC Question Response Form re: Details of HELB Piping of Concerns for CC/HELB SDP PROD00021649 10/22/2009 email from S. Myers to L. Johnson and others at Xcel re: Concern raised by the NRC for the Battery Rooms in response to a Unit 2 Turbine Building HELB PROD00021650 5/16/2009 email from R. Best to S. Northard and others at Xcel re: Xcel's position on the performance deficiency and lack of bounds on the CC-HELB SDP scope PROD00021651 Proposed Xcel Position Statements Relative to the CC-HELB SDP Evaluation PROD00021652 Response to question posed by the NRC regarding flow rates from postulated break sizes in the CL system.

PROD00021653 Xcel's options in regard to the NRC's preliminary white finding against Unit 2 in the cross-cutting area of human performance for decision making related to the design of the Turbine Building CC piping PROD00021654 7/10/2009 email from J. Ritter to jpm@epm-inc.com and others at Xcel re: Preliminary results of the CC/HELB Significant Design Process PROD00021655 2/12/2009 email from J. Ritter to B. Horner and S. Skoyen re: Timing related to CC Surge Tank based on pipe breaks PROD00021656 4/25/2009 email from J. Ritter to M. Hopman re: Potential of evaluating impacts of flooding in Turbine Building in the current CC/HELB Significant Design Process and understanding of Cooling Water break flow rates PROD00021657 2/9/2009 email from J. Riter to D. Smith re: Proposed responses to the NRC for CC/HELB Operator Actions PROD00021658 2/9/2009 email from D. Smith to J. Ritter re: HELB occurrence on Unit 1 causing severance of Unit 2 CC lines scenario PROD00021659 4/22/2009 email from D. Malek to D. Hartinger and others at Xcel re: Discovery of potential flooding in the Turbine Building PROD00021660 Report on interactions between high energy piping and cooling water that also affect component cooling PROD00021661 Risk Assessment Approach for HELB Interaction with CC Piping in the Turbine Building PROD00021662 HELB Pipe Break Frequency Calculation PROD00021663 Unit 1 HELB Piping - Pipe Whip Damage Only PROD00021664 Analysis re: High Energy Line Break occurring in area of the turbine building that also contains main feedwater and Component Cooling Water piping PROD00021665 HELB Pipe Break Frequency Calculation Based on HELB Design Basis Criteria PROD00021666 1/19/2009 email from J. Carver to M. Loosbrock re: The use of cross-connect valves relative to the Cooling Component High Energy Line Break Issue PROD00021667 Report with response as to whether there exists engineering calculation to support procedures to perform cross-connecting Unit 1 to Unit 2 Component Cooling System.

PROD00021668 11/18/2008 email from J.Ritter to K. Den Herder and others at Xcel re: Issue related to HELB interaction with Component Cooling piping located in Turbine Building.

60

Document Number Description PROD00021669 12/2/2008 email from J. Ritter to K. DenHerder re: Review of information relative to HELB lines that impact Component Cooling piping located in the Turbine Building PROD00021670 12/2/2008 email from J. Ritter to J. Anderson and others at Xcel re: Information provided to NRC Region III Senior Risk Analyst (Laura Kozak)

PROD00021671 4/3/2009 email from D. Setlur of AES Engineering to J. Ritter and C. Agan re: Break and crack sizes in Component Cooling Piping in turbine Building from HELB events PROD00021672 3/12/2009 email from J. Ritter to B. Slack and others at Xcel re: Discovery of new piece of HELB piping impacting CC line in Turbine Building PROD00021673 11/5/2008 NRC Question Response Form re: Length and diameter of high energy pipes that can interact with the Turbine Building Component Cooling System PROD00021674 12/19/2008 email from J. Ritter to K. Fleming and R. Best re: Re-evaluation of SDP issue relative to Component Cooling piping in Turbine Building PROD00021675 5/20/2009 MAAP Analysis - RCP Seal LOCA with Loss of CCW PROD00021676 5/15/2009 MAAP Analysis - RCP Seal LOCA with Loss of CCW PROD00021677 4/26/2009 study performed in support of a loss of CCW scenario PROD00021678 4/26/2009 study performed in support of a loss of CCW scenario PROD00021679 4/26/2009 study performed in support of a loss of CCW scenario PROD00021680 4/26/2009 study in support of a loss of CCW scenario PROD00021681 4/26/2009 study performed in support of a loss of CCW scenario PROD00021682 4/26/2009 study performed in support of a loss of CCW scenario PROD00021683 4/26/2009 study performed in support of a loss of CCW scenario PROD00021684 4/26/2009 study performed in support of a loss of CCW scenario PROD00021685 Prairie Island loss of CCW due to HELB - simulator data PROD00021686 MAAP4 Analysis of RCP Seal LOCA With RHR/SI Unavailable PROD00021687 5/20/2009 letter from Engineering Planning and Management, INC to Jayne Ritter re: description of MAAP analysis -

Prairie Island RCP Seal LOCA with Loss of CCW PROD00021688 5/20/2009 MAAP analysis - Reactor cooler pump seal LOCA with loss of CCW PROD00021689 4/15/2009 study performed in support of a loss of CCW scenario PROD00021690 4/15/2009 study performed in support of a loss of CCW scenario PROD00021691 4/15/2009 study performed in support of a loss of Cow scenario PROD00021692 4/15/2009 study performed in support of a loss of CCW scenario PROD00021693 4/15/2009 Study performed in support of a loss of CCW scenario PROD00021694 4/15/2009 study performed in support of a loss of CCW scenario PROD00021695 4/15/2009 Study in support of a loss of CCW scenario PROD00021696 4/15/2009 study performed in support of a loss of CCW scenario to predict a subsequent RCP seal LOCA with progression to stable sump recirculation PROD00021697 4/4/2009 Email from J. Ritter to J. Olvera w/ R. Best & P. Knoespel cc'd re MAAP Run for ECA-1.1 calculations 61

Document Number Description PROD00021698 2/27/2009 email from J. Olvera to J. Ritter re CC/HELB MAAP calculations PROD00021699 3/19/2009 email from J. Olvera to J. Ritter, P. Knoespel re CC/HELB MAAP calculations PROD00021700 3/23/2009 email from J. Ritter to P. Olvera, P. Knoespel re CC/HELB MAAP cases to model/calculations PROD00021701 PT_2ES-1-1_step.inc file re post loca cool down and depressurization PROD00021702 3/24/2009 email from J. Ritter to J. Olvera, P. Knoespel, re CC/HELB MAAP calculation PROD00021703 CC/HELB calculation PROD00021704 3/24/2009 email from J. Ritter to J. Olvera re CC/HELB MAAP calculation PROD00021705 3/23/2009 email from J. Olvera to J. Ritter, P. Knoespel re CC/HELB MAAP calculations PROD00021706 3/25/2009 email from J. Ritter to J. Olvera, P. Knoespel re CC/HELB MAAP calculations PROD00021707 3/25/2009 email from J. Ritter to J. Olvera, P. Knoespel re CC/HELB MAAP calculation PROD00021708 3/25/2009 email from J. Ritter to J. Olvera, P. Knoespel, re CC/HELB MAAP calculation PROD00021709 3/19/2009 email from K. Slingsby to J. Ritter re ERCS data request for CC/HELB calculation PROD00021710 ECRS data report from 4/8/2001 PROD00021711 3/19/2009 email from K. Slingsby to J. Ritter re ERCS data request for CC/HELB calculation PROD00021712 ECRS data report from 4/8/2001 PROD00021713 3/29/2009 email from J. Ritter to J. Olvera, P. Knoespel re comments on MAAP report for CC/HELB PROD00021714 3/29/2009 email from J. Ritter to J. Olvera, P. Knoespel re comments on MAAP report for CC/HELB adding sensitivity analysis PROD00021715 3/30/2009 email from J. Ritter to J. Olvera, P. Knoespel re completion of MAAP report for CC/HELB PROD00021716 4/1/2009 email from J. Ritter to J. Olvera, P. Knoespel re comments on revised MAAP report for CC/HELB PROD00021717 3/30/2009 email from J. Olvera to J. Ritter, P. Knoespel re revised draft of MAAP report for CC/HELB PROD00021718 3/24/2009 MAAP Analysis RCP Seal LOCA with Loss of CCW draft with markings PROD00021719 3/24/2009 MAAP Analysis RCP Seal LOCA with Loss of CCW PROD00021720 3/24/2009 MAAP Analysis RCP Seal LOCA with Loss of CCW draft with markings PROD00021721 CC/HELB SDP MAAP Case to Model RCP Seal LOCA with SI & RHR Recirculation Mode with FCU as Decay Heat Removal PROD00021722 4/24/2009 email from J. Ritter to others at Xcel re MAAP run results based on simulator results and procedure flow path PROD00021723 3/10/2005 Loss of Emergency Coolant Recirculation Procedure PROD00021724 Loss of Emergency Coolant Recirculation step 14 Check if SI can be terminated PROD00021725 5/1/2009 email from J. Ritter to J. Olvera, R. Best, P. Knoespel re MAAP sensitivities cases calculations PROD00021726 ECA-1.1 step analysis PROD00021727 4/30/2005 Background Information For Westinghouse Group Emergency Response Guideline ES-1.2 Post LOCA Cool down and Depressurization PROD00021728 2/24/2009 email from J. Ritter to L. Kozak re CC/HELB SDP additional information PROD00021729 4/24/1996 B13 Reactor Water Make-Up System Description and Review PROD00021730 11/21/2006 Reactor Makeup System Procedure PROD00021731 8/1/2007 Reactor Makeup Degasification System Procedure 62

Document Number Description PROD00021732 1/24/2006 Alarm Response Procedure Manual PROD00021733 Question and Responses on Reactor Makeup System PROD00021734 Tank Book Reactor Makeup Storage Tanks 11, 12, 21, & 22 PROD00021735 3/27/2009 NRC Question Response Form re 12-MS-35 steam line location relative to CC supply valves PROD00021736 2/9/2009 email from J. Ritter to T. Borgen re additional information on CC/HELB SDP PROD00021737 2/10/2009 email from J. Ritter to Others at Xcel re Conclusion on HELB Line 12-MS-35 PROD00021738 6/23/2009 email from J. Ritter to Others at Xcel re NRC Questions and Requests on CC/HELB PROD00021739 6/17/2009 email from D. Malek to J. Ritter re NRC Questions and Requests on CC/HELB PROD00021740 11 RCP seal records PROD00021741 6/11/2009 NRC question response form re in-scope piping RCP seals PROD00021742 6/11/2009 email from D. Malek to R. Best, J. Ritter re NRC Questions and Requests on CC/HELB PROD00021743 6/11/2009 email from J. Ritter to R. Best, D. Malek re NRC Questions and Requests on CC/HELB PROD00021744 11/5/2008 NRC Question Response Form re length, diameter, of CC/HELB piping PROD00021745 6/10/2009 NRC Question Response Form re replacement of FAC piping PROD00021746 2/9/2009 NRC Question Response Form re training material supporting Charging Pump Suction source to RWST PROD00021747 2/9/2009 email from J. Ritter to L. Kozak re: Prairie Island CC/HELB SDP - Additional Information PROD00021748 2/10/2009 email from J. Ritter to L. Kozak re: Prairie Island CC/HELB SDP Additional Information MS-35 and LOCA Success Criteria for Seal LOCA break areas PROD00021749 3/1/2009 email from J. Ritter to L. Kozak re: Prairie Island CC/HELB SDP Information (Summary Assessment) re: risk significance of the Component Cooling Water/Turbine Building HELB issue PROD00021750 12/2/2008 email from J. Ritter to L. Kozak re: Prairie Island Component Cooling Piping/HELB Issue Cutsets and information for Component Cooling System Piping Interaction with High Energy Line Breaks located in the Turbine Building PROD00021751 Cutsets with Descriptions Report re: Component Cooling Water PROD00021752 Spreadsheet Cutsets with Descriptions Report , Loss of Component Cooling Water, Case 2a - U2 LOCC w U2 HELB PROD00021753 2/12/2007 - Core Cooling Following Loss of RHR Flow Procedures rev 13 PROD00021754 1/5/2006 PINGP Abnormal Operating Procedure -Earthquakes PROD00021755 1/5/06 Abnormal Operating Procedure "Loss of Component Cooling" 2C14 AOP1 REV: 16 PROD00021756 Various Alarm Response Procedures - C47015 PROD00021757 10/14/2008 Alarm Response Procedure - Revision 29 PROD00021758 6/24/2007 Alarm Response Procedure - Revision 38 PROD00021759 5/2/2003 Alarm Response Procedure - Revision 28 PROD00021760 2/23/2006 Alarm Response Procedure - Revision 36 PROD00021761 8/19/1991 Unit 2 Component Cooling System Flow Diagram PROD00021762 8/2/1991 Unit 2 Component cooling system flow diagram PROD00021763 2/27/2009 Preliminary Human Reliability Analysis for RMW Tank Swapover Operator Action PROD00021764 2/27/2009 Preliminary Human Reliability Analysis for RMW Tank Swapover Operator Action 63

Document Number Description PROD00021765 3/27/2009 NRC question response form - With regards to the 12-MS-35 steam line, what is its location relative to the valves (CC-71-1 & CC-71-2) that isolate the CC supply to the Gas House?

PROD00021766 11/1991 Component External Leakage and Rupture Frequency Estimates PROD00021767 4/16/2009 email from R. Best to D. Vincent, M. Wadley and others at Xcel re: agenda for NRC conference call PROD00021768 3/9/2009 Discussion with Jack Geissner on CC/HELB SDP Issue PROD00021769 3/9/2009 email from R. Best to J. Ritter re: Notes from discussion with Jack Geisner regarding the schedule and milestones for the CC/HELB issue PROD00021770 Response to NRC question about loss of component cooling and subsequent alarm response procedures PROD00021771 1/20/2009 email from M. Loosbrock to J. Ritter, M. Brossart, B. Horner re: CC/HELB letdown PROD00021772 NRC questions regarding loss of component cooling and alarm response procedure PROD00021773 7/2/2009 email from J. Carver to M. Smutny re: CL flooding due to HELB in Turbine Bldg scenario PROD00021774 3/12/2009 email from D. Smith to S. Seilhymer re: CC/HELB and Letdown PROD00021775 7/13/2009 email from J. Carver to J. Ritter re: Consequences of turbine building flood on C35 AOP2 Actions and NRC findings PROD00021776 2/9/2009 email from D. Smith to J. Ritter re: HELB at reduced inventory PROD00021777 5/6/2009 Email from J. Carver to J. Ritter re CC/HELB and Operator Response PROD00021778 5/6/2009 Email from J. Carver to J. Ritter re CC/HELB and Operator Response PROD00021779 3/16/2009 Email from J. Carver to J. Ritter re HELB and CC Valves PROD00021780 3/16/2009 Email from J. Carver to J. Ritter re CC Surge Tank and Leakage PROD00021781 3/16/2009 Email from J. Carver to J. Ritter re CC Surge Tank and Leakage PROD00021782 5/12/2009 Email from J. Carver to J. Ritter re CC/HELB Question related to Tornado Event PROD00021783 5/11/2009 Email from J. Carver to J. Ritter re CC/HELB Question related to Tornado Event PROD00021784 5/11/2009 Email from J. Carver to J. Ritter re CC/HELB Question related to Tornado Event PROD00021785 5/11/2009 Email from J. Carver to J. Ritter re CL Flooding Event PROD00021786 6/23/2009 Email from James Carver to Jayne Ritter re: CL Flooding and Operator Procedure PROD00021787 6/23/2009 Email from James Carver to Jayne Ritter re: MV-32371 and Turbine cooling following trip PROD00021788 4/30/2009 Eamil from Jayne Ritter to James Carver re: thermal hydraulic analysis for crediting actions in ECA-1.1 PROD00021789 5/4/2009 Email From James Carver to Jayne Ritter re: RCS subcooling and depressurization PROD00021790 4/30/2009 Email from James Carver to Jayne Ritter re: operation of SI pump in ECA-1.1 PROD00021791 4/30/2009 email from J. Carver to J. Ritter re: Human Reliability Analysis (HRA) for C14 AOP1 actions and HELB pipe break scenario PROD00021792 4/30/2009 email from J. Carver to J. Ritter re: Human Reliability Analysis (HRA) for C14 AOP1 actions PROD00021793 4/28/2009 email from J. Carver to J. Ritter re: Loss of Offsite Power at PINGP and plant safeguards PROD00021794 5/22/2009 email from J. Carver to J. Ritter re: Question re: review the operator action human reliability analysis that were used for the CC/HELB SDP PROD00021795 3/19/2009 email from J. Carver to J. Ritter re: RCP Seal Injection Restoration and sealing procedure 64

Document Number Description PROD00021796 2/10/2009 email from D. Smith to J. Ritter re: Turbine building HELB/CC piping interaction questions and HELB scenarios PROD00021797 2/10/2009 email from T. Borgen to J. Ritter re: Turbine building HELB/CC piping interaction questions PROD00021798 1/28/2009 email from S. Ginkel to J. Ritter re: Outage Timeline Information for NRC Finding and information needed for risk assessment PROD00021799 Chart showing dates and times of outage actions PROD00021800 1/23/2009 email from S. Ginkel to J. Ritter re: Outage Timeline Information for NRC Finding and information needed for risk assessment PROD00021801 Chart showing dates and times for outage actions PROD00021802 1/22/2009 email from S. Ginkel to J. Ritter and other Xcel employees re: Outage Timeline Information for NRC Finding and information needed for risk assessment analysis PROD00021803 1/22/2009 email from S. Ginkel to J. Ritter and other Xcel employees re: Outage Timeline Information for NRC Finding and information needed for risk assessment PROD00021804 1/16/2009 email from J. Ritter to M. Huting and other Xcel employees re: PRA Risk Assessment Approach for HELB/CC SDP analysis PROD00021805 Tables re: Unit 1 HELB Pipe Break Calculation (Linear Foot Method), Unit 2 HELB Pipe Break Calculation (Linear Foot Method)

PROD00021806 4/8/2009 V.SPA.08.008, Addendum 8 HELB Pipe Break Frequency Calculation PROD00021807 Significance Determination Process (SDP) Phase 2 Prairie Island Unit 2 CAP 01145695 "CC Piping Adjacent to HELB Location in Turbine Building" PROD00021808 Cutsets with Descriptions Report PROD00021809 Cutsets with Descriptions Report PROD00021810 6/5/2009 PINGP Component Cooling Water/Turbine Building Issue Risk Significance Summary of Xcel Energy Analysis Performed PROD00021811 6/5/2009 email from R. Best to J. Ritter re: CC-HELB report, round 3 PROD00021812 6/5/2009 PINGP Component Cooling Water/Turbine Building Issue Risk Significance Summary of Xcel Energy Analysis Performed PROD00021813 6/5/2009 PINGP Component Cooling Water/Turbine Building Issue Risk Significance Summary of Xcel Analysis Performed PROD00021814 Cutsets with Descriptions Report PROD00021815 Cutsets with Descriptions Report PROD00021816 6/4/2009 V.SPA.08.008, Addendum 2 - SDP Quantification PROD00021817 6/5/2009 email from D. Malek to R. Best re: More files needed re: CCDP Description, HELB Frequency, FAC Method, and Final Quantification files PROD00021818 Cutsets with Descriptions Report PROD00021819 6/4/2009 V.SPA.08.008, Addendum 2 - SDP Quantification PROD00021820 6/4/2009 V.SPA.08.008, Addendum 2 - SDP Quantification 65

Document Number Description PROD00021821 6/3/2009 email from R. Best to J. Ritter re: V SPA 08 008 - Addendum 12-jr comments 6.02.09.doc PROD00021822 6/3/2009 V.SPA.08.008, Addendum 12 CC-HELB SDP Event Trees PROD00021823 6/3/2009 email from R. Best to J. Ritter and other Xcel employees re: Rough first cut at CC-HELB report for Friday PROD00021824 PINGP Component Cooling Water/Turbine Building Issue Risk Significance Summary of Xcel Analysis Performed 6/5/2009 PROD00021825 3/19/2009 email from R. Best to J. Ritter and D. Malek re: TB CC event tree stuff PROD00021826 1/2/2009 email from J. Ritter to B. Horner re: RCP Seal Info for NRC RAI Response - Needs a review PROD00021827 Follow-Up Questions Regarding Responses to SAMA RAIs for Prairie Island PROD00021828 2/17/2009 email from J. Kempkes to J. Ritter and other Xcel employees re: Operator Review of RMW Pump Operation and Tank Swap over PROD00021829 12/15/2008 email from B. Horner to J. Ritter re: Potential NRC Question (RCP Pump Cooling, Charging verses CC)

PROD00021830 12/19/2008 email from B. Horner to J. Ritter re: Potential NRC Question (RCP Pump Cooling, Chagrin verses CC)

PROD00021831 12/22/2008 email from B. Horder to J. Ritter re: Potential NRC Question (RCP Pump Cooling, Charging verses CC)

PROD00021832 1/5/2009 email from J. Ritter to B. Horner and R. Best re: Potential NRC Question (RCP Pump Cooling, Charging verses CC)

PROD00021833 2/28/2009 email from J. Ritter to R. Best and R. Rohrer re: Draft SDP summary document for comment PROD00021834 2/27/2009 PINGP Component Cooling Water/Turbine Building Issue Risk Significance Summary of Xcel Analysis Performed PROD00021835 11/18/2008 email from P. Knoespel to J. Ritter and J. Masterlark re: EC13459%20-

%20Number%20of%20high%20energy%20pipe%20sections[1].pdf PROD00021836 11/17/2008 e-mail from P. Knoespel to J. Ritter re: internal flooding initiating event frequencies PROD00021837 11/18/2008 e-mail from J. Ritter to K. Den Herder re: HELB interaction with the turbine building component cooling piping PROD00021838 11/6/2008 e-mail from M. Davis to D. Malek and J. Ritter re: design of cooling component in turbine building PROD00021839 12/8/2008 e-mail from P. Knoespel to J. Ritter re: HELB pipe break frequency PROD00021840 11/17/2008 e-mail from P Knoespel to J. Ritter re: HELB pipe break methodology PROD00021841 12/1/2008 e-mail from P. Knoespel to J. Ritter re: HELB pipe break frequency PROD00021842 Data supporting HELB pipe break frequency analysis PROD00021843 12/2/2008 e-mail from P. Knoespel to R. Best and J. Ritter re: HELB pipe break frequency PROD00021844 2/18/2009 e-mail from B. Horner to S. Northard re: CC/HELB issue PROD00021845 12/2/2008 e-mail from L. Kozak of the NRC to J. Ritter re: CC/HELB issue PROD00021846 11/18/2008 e-mail from P. Knoespel to J. Ritter re: CC/HELB issue PROD00021847 March 2009 Past Operability Analysis of PINGP Safety Injection Pumps for Loss of Lube Oil Cooling prepared by MPR Associates PROD00021848 3/20/2009 e-mail from D. Malek to J. Ritter re: CC/HELB issue PROD00021849 3/20/2009 Iepson Consulting Enterprises draft of Functional Assessment for the Reactor Make-Up Pump Motors and the Associated Electrical Power Supply Components 66

Document Number Description PROD00021850 3/25/2009 Iepson Consulting Enterprises final draft of Functional Assessment for the Reactor Make-Up Pump Motors and the Associated Electrical Power Supply Components PROD00021851 3/23/2009 e-mail from J. Ritter to K. Vincent and S. Roberta re: 3/20/2009 Iepson Consulting Enterprises draft of Functional Assessment for the Reactor Make-Up Pump Motors and the Associated Electrical Power Supply Components PROD00021852 3/6/2009 letter from K. Iepson of Iepson Consulting Enterprises to S. Roberto re: proposal for technical support PROD00021853 6/20/2007 response to question re: CC surge tank level transmitters PROD00021854 6/20/2007 CDBI Question Response Form re: non-safety related instrumentation PROD00021855 5/6/2009 PINGP SDP3.HRA Analysis File re: HELB/CC PROD00021856 5/13/2009 e-mail from J. Ritter to J. Grobbelaar with Curtiss Wright re: HELB/CC issue PROD00021857 5/8/2009 PINGP SDP3.HRA Analysis File re: HELB/CC PROD00021858 4/23/2005 CBDTM/THERP cognitive analysis by J. Grobbelaar of SCIENTECH re: CC and tornado or seismic event PROD00021859 5/22/2009 e-mail from J. Grobbelaar at Curtis Wright to J. Ritter re: HELB/CC PROD00021860 5/13/2009 HCR/ORE/THERP cognitive analysis by J. Grobbelaar re: HELB/CC PROD00021861 5/14/2009 CBDTM/THERP cognitive analysis by J. Grobbelaar re: CC and LOOP caused by tornado PROD00021862 5/14/2009 CBDTM/THERP cognitive analysis by J. Grobbelaar re: CC and LOOP due to tornado or seismic event PROD00021863 5/14/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: HELB/CC PROD00021864 5/13/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: HELB/CC PROD00021865 5/13/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: HELB/CC PROD00021866 4/9/2009 e-mail from J. Ritter to J. Grobbelaar of Curtis Wright re: HELB/CC PROD00021867 4/1/2009 MAAP Analysis re: RCP Seal LOCA with Loss of CCW by Engineering and Planning Management, Inc.

PROD00021868 4/24/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter and J. Julius re: HELB/CC PROD00021869 5/8/2009 CBDTM/THERP cognitive analysis by J. Grobbelaar of SCIENTECH re: HELB/CC PROD00021870 5/7/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: CC and tornado or seismic event PROD00021871 5/27/2009 Human Reliability Analysis to Support Significance Determination Process prepared by J. Grobbelaar of Curtiss Wright / SCIENTECH PROD00021872 5/29/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: HELB/CC PROD00021873 5/21/2009 PINGP SDP3.HRA Analysis File re: HELB/CC PROD00021874 5/26/2009 PINGP SDP3.HRA Analysis File re: CC and LOOP from tornado PROD00021875 5/26/2009 PINGP SDP3.HRA Analysis File re: CC and LOOP from tornado or seismic event PROD00021876 5/26/2009 PINGP SDP3.HRA Analysis File re: CC and LOOP from tornado PROD00021877 5/26/2009 PINGP SDP3.HRA Analysis File re: CC and LOOP from tornado or seismic event PROD00021878 5/6/2009 e-mail from J. Grobbelaar of Curtiss Wright to J. Ritter re: HELB/CC PROD00021879 4/7/2009 e-mail from J. Ritter to J. Grobbelaar of Curtiss Wright re: HELB/CC PROD00021880 2/24/2009 e-mail from J. Ritter to J. Grobbelaar of Curtiss Wright re: HELB/CC PROD00021881 2/23/2009 PINGP SDP3.HRA Analysis File re: HELB/CC PROD00021882 Operator failure loss of CC scenarios 67

Document Number Description PROD00021883 2/18/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: HELB/CC PROD00021884 3/19/2009 e-mail from J. Ritter to J. Masterloark re: HELB/CC PROD00021885 2/23/2009 PINGP SDP3.HRA Analysis File re: HELB/CC PROD00021886 2/24/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: HELB/CC PROD00021887 2/27/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: HELB/CC PROD00021888 2/27/2009 PINGP SDP.3HRA Analysis File re: HELB/CC PROD00021889 2/27/2009 e-mail from J. Ritter to J. Grobbelaar of Curtis Wright re: HELB/CC PROD00021890 2/27/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: HELB/CC PROD00021891 2/27/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: HELB/CC PROD00021892 2/27/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: HELB/CC PROD00021893 2/27/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: HELB/CC PROD00021894 Decision tree re: alternative steps following loss of CC PROD00021895 2/27/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: HELB/CC PROD00021896 2/27/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: HELB/CC PROD00021897 2/26/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: HELB/CC PROD00021898 2/26/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: HELB/CC PROD00021899 2/26/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: CC/HELB PROD00021900 2/25/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: CC/HELB PROD00021901 3/6/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: CC/HELB PROD00021902 3/9/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: CC/HELB PROD00021903 3/7/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: CC/HELB PROD00021904 3/5/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: CC/HELB PROD00021905 2/17/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: CC/HELB PROD00021906 2/17/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: CC/HELB PROD00021907 2/17/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: CC/HELB PROD00021908 2/20/2009 e-mail from J. Grobbelaar of Curtis Wright to D. Malek re: CC/HELB PROD00021909 2/20/2009 PINGP SDP3.HRA Analysis File re: CC/HELB PROD00021910 2/20/2009 e-mail from D. Malek to J. Grobbelaar of Curtis Wright re: CC/HELB PROD00021911 2/23/2009 e-mail from J. Grobbelaar of Curtis Wright to D. Malek re: CC/HELB PROD00021912 2/23/2009 e-mail from J. Grobbelaar of Curtis Wright to D. Malek re: CC/HELB PROD00021913 2/19/2009 e-mail from J. Grobbelaar of Curtis Wright to D. Malek re: CC/HELB PROD00021914 2/23/2009 e-mail from J. Grobbelaar of Curtis Wright to J. Ritter re: CC/HELB PROD00021915 2/19/2009 e-mail from D. Malek to J. Grobbelaar of Curtis Wright re: CC/HELB PROD00021916 2/23/2009 PINGP SDP3.HRA Analysis File re: CC/HELB PROD00021917 5/18/2009 e-mail from D. Malek to J. Ritter re: CC/HELB PROD00021918 5/18/2009 21 Component Cooling Water Surge Tank Level Calculation PROD00021919 2/19/2009 e-mail from J. Hanson to J. Ritter and others at Xcel re: CC/HELB 68

Document Number Description PROD00021920 2/18/2009 e-mail from J. Hanson to J. Ritter re: CC/HELB PROD00021921 4/2/2009 50.59 Screening re: Measure Unit 2 RMU Flows to CC Surge Tank and VCT for PRA PROD00021922 6/6/2007 CDBI Question Response Form re: mission time for the CC Surge Tank PROD00021923 1/5/2009 e-mail from J. Ritter to R. Best re: CC/HELB PROD00021924 6/24/2009 e-mail from J. Ritter to R. Rohrer re: CC/HELB PROD00021925 6/24/2009 Re-analysis of Seismic Contribution to CC/HELB SDP PROD00021926 Seismic Event BIN-1 Event Tree PROD00021927 Prairie Island Seismic Hazard Vector Table PROD00021928 4/20/2009 e-mail from R. Best to K. Kriesel re: CC System Fragilities PROD00021929 4/17/2009 Stevenson & Associates calculation re: seismic capacity of condensate make-up tank, unit 1 PROD00021930 4/17/2009 Stevenson & Associates calculation re: seismic capacity of blow out panel in gas house PROD00021931 4/17/2009 Stevenson & Associates calculation re: seismic capacity of blow out panel in gas house PROD00021932 4/17/2009 Photographic Log attachment to Stevenson & Associates calculation re: seismic capacity of condensate make-up tank, unit 1 PROD00021933 4/16/2009 Stevenson & Associates Engineering Walkdown Report PROD00021934 5/19/2009 e-mail from R. Best to J. Ritter and others at Xcel re: Stevenson & Associates seismic calculations PROD00021935 5/15/2009 Stevenson & Associates calculation re: seismic and wind fragility parameters PROD00021936 5/19/2009 Stevenson & Associates calculation re: seismic and wind capacities of the gas house PROD00021937 May 2009 Stevenson & Associates Report: External Event Fragilities for Component Cooling System in Turbine Building PROD00021938 May 2009 Stevenson & Associates Photographic Log Attachment to Report: External Event Fragilities for Component Cooling System in Turbine Building PROD00021939 5/2/2009 e-mail from R. Best to K. Kriesel and D. Malek re: Stevenson & Associates CC/HELB report PROD00021940 1/12/2009 e-mail from K. Kriesel to D. Setlur of Automated Engineering Services Corp. re: CC piping seismic analysis PROD00021941 TB CC Piping Isometric Drawings PROD00021942 2/12/2009 Automated Engineering Services Corp. Progress Report on Analysis of CC/FW/CD Lines in Turbine Building PROD00021943 Component Cooling Piping Project Engineering Work Scope PROD00021944 2/2/2009 NRC Question Response Form re: PINGP seismic evaluations PROD00021945 2/2/2009 NRC Question Response Form re: tornado loads within the turbine building PROD00021946 5/20/2009 e-mail from R. Best to D. Malek re: tornado mean value calculations PROD00021947 5/20/2009 R. Best tornado mean value calculations PROD00021948 4/27/2009 e-mail from D. Malek to R. Best and W. Djordjevic of Stevenson & Associates re: CC system fragilities PROD00021949 Data supporting CC system fragilities analysis PROD00021950 Data supporting CC system fragilities analysis PROD00021951 5/2/2009 e-mail from K. Kriesel to J. Ritter re: CC/HELB SDP PROD00021952 4/24/2009 e-mail from R. Best to W. Djordjevic of Stevenson & Associates re: RFP for seismic and tornado analysis of turbine building equipment 69

Document Number Description PROD00021953 March 1994 response to NRC Generic Letter 88 Individual Plant Examination of External Events for Severe Accident Vulnerabilities PROD00021954 4/24/2009 RFP to Stevenson & Associates for seismic and tornado analysis of turbine building equipment PROD00021955 2/6/2009 e-mail from J. Ritter to D. Malek and others at Xcel re: seismic HELB impact on CC piping PROD00021956 Data supporting seismic fragilities analysis PROD00021957 2/6/2009 e-mail from J. Ritter to D. Malek and others at Xcel re: seismic HELB impact on CC piping PROD00021958 4/17/2009 Design Information Transmittal re: Safety Injection Pump operation without CC flow PROD00021959 3/17/2009 e-mail from W. Hadeka to J. Ritter re: CC/HELB PROD00021960 Design Description Form re: RHR pump seal replacement PROD00021961 3/26/2009 e-mail from J. Ritter to B. Horner and D. Malek re: containment and RCS pressure PROD00021962 CC/HELB containment sump water temperature analysis PROD00021963 3/13/2009 e-mail from M. Smutny to J. Ritter re: RWST Refill Sources PROD00021964 1/15/2009 e-mail from W. Hadeka to J. Ritter re: CC/HELB PROD00021965 April 2009 MPR Associates, Inc. Report: Past Operability Analysis of PINGP Safety Injection Pumps for Loss of Lube Oil and Seal Cooling PROD00021966 3/26/2009 MPR Associates Lube Oil Heat Rejection Calculation PROD00021967 4/24/2009 MPR Associates Lube Shaft Seal Heat Generation Calculation PROD00021968 1/29/2009 e-mail from B. Horner to A. Washburn at Sulzer re: SI Pump Loss of Bearing Cooling PROD00021969 Lube Oil Piping diagram PROD00021970 3/10/2009 Email from J. Ritter to T. Borgen & M. Halverson re information for simulator CC/HELB case PROD00021971 3/10/2009 PINGP Human Reliability Analysis Calculation performed by Jan Grobbelaar, Scientech PROD00021972 3/13/2009 Email from M. Smutny to J. Ritter re CC/HELB simulator PROD00021973 3/13/2009 Email from M. Smutny to J. Ritter re CC/HELB simulator PROD00021974 12/19/2008 Email from J. Ritter to R. Best and others at Xcel re summary of CC/HELB SDP Discussion with the NRC PROD00021975 3/12/2010 Email from D. Malek to R. Best & J. Ritter re risk of tornados to CC Water piping PROD00021976 Report CC Piping Project Engineering Work Scope PROD00021977 3/9/2009 Email from J. Ritter to K. Kriesel & D. Malek re calculations on probability of missile impact from a tornado PROD00021978 5/4/1993 Calculations on probability of missile impact from a tornado PROD00021979 5/31/1994 Calculations re tornado & seismic evaluation PROD00021980 3/20/2009 Email from J. Ritter to T. Borgen re PRA Human Reliability Analysis PROD00021981 1/12/2009 Email from B. Horner to J. Ritter re Turbine building HELB/CC SDP update PROD00021982 2/28/2009 Email from J. Ritter to R. Rohrer & R. Best re CC HELB NRC submission PROD00021983 1/15/2009 Email from B. Horner to S. Northard re turbine building HELB/CC SDP update PROD00021984 11/5/2008 Reply by B. Slack to NRC Question Response form PROD00021985 1/15/2009 Email from B. Horner to J. Ritter HELB/CC SDP update PROD00021986 1/18/2009 Email from James Masterlark at EPM to B. Horner re short term strategy for HELB/CC SDP response PROD00021987 1/9/2009 Memo from B. Horner to S. Northard re status of turbine building HELB/CC piping 70

Document Number Description PROD00021988 2/9/2009 Memo from B. Horner to S. Northard re status of turbine building HELB/CC piping PROD00021989 2/25/2005 Memo from B. Horner to S. Northard re status of turbine building HELB/CC SDP PROD00021990 3/13/2009 Memo from S. Northard to D. Malek re status of turbine building HELB/CC SDP PROD00021991 Data from simulator cases in response to action 10 PROD00021992 Output from simulator case in response to action 11 PROD00021993 Output from simulator cases in response to actions 28 & 29 PROD00021994 1/29/2009 Email from B. Horner to J. Ritter re simulation data on loss of CC, Ltdn & VCT temperatures PROD00021995 Graph on LTDN & VCT temperature after loss of CC PROD00021996 3/23/2009 Volume Control Tank Simulator Case Study prepared by J. Ritter reviewed by D. Malek technical review B.

Horner PROD00021997 3/23/2009 Email from J. Gehlar to J. Ritter re question regarding simulator software used for actions 28 and 29 related to CC HELB PROD00021998 1/29/2009 Email from B. Horner to J. Ritter re response to loss of CC, Ltdn & VCT temperature simulation PROD00021999 Data from loss of CC, Ltdn & VCT temperature simulation PROD00022000 Evaluation on loss of cooling while in an outage PROD00022001 1/13/2009 Email from J. Ritter to John Olvera re question regarding CC line interaction with HELB piping SDP PROD00022002 5/27/2009 Email from J. Ritter to T. Borgen re CC/HELB flooding simulator scenario PROD00022003 Summary of results loss of CC scenario PROD00022004 2/17/2009 Email from J. Ritter to J. Grobbelar re responses to questions on reactor makeup tank swapover operator action PROD00022005 Results reactor makeup tank swapover operator action PROD00022006 Tank Book reactor makeup tank swapover operator action PROD00022007 5/31/2009 e-mail from J. Ritter to T. Bacon re: CC/HELB SDP PROD00022008 12/1/2008 e-mail from J. Ritter to D. Malek and R. Best re: CC/HELB PROD00022009 4/9/2009 assumptions supporting MAAP cases re: RCP seal LOCA with loss of CCW PROD00022010 6/3/2009 e-mail from M. Huting to M. Schimmel and others at Xcel re: NRC CC/HELB presentation PROD00022011 12/1/2008 draft of letter from J. Ritter to NRC re: CC/HELB PROD00022012 6/17/2009 e-mail from J. Ritter to K. DenHerder re: CC/HELB PROD00022013 6/17/2009 e-mail from J. Ritter to R. Best and B. Horner re: CC/HELB SDP PROD00022014 5/15/2009 e-mail from J. Ritter to M. Smutny re: operator action to open VC-1-1 PROD00022015 4/23/2005 CBDTM/THERP Cognitive Analysis by J. Grobbelaar re: operator failure to open VC-1-1 PROD00022016 4/10/2009 Email from J. Ritter to D. Malek and R. Best re: Operator Dependency Actions PROD00022017 2/16/2009 Email from J. Ritter to B. Horner and T. Bacon re: Operator Review of RMW Pump Operation and Tank Swap Over PROD00022018 7/12/2007 List of Main PRA Notebooks PROD00022019 3/4/2009 Email from D. Malek to J. Ritter re: pipe break frequency PROD00022020 Spreadsheet titled Unit 1 HELB Piping 71

Document Number Description PROD00022021 12/15/2008 Email from J. Ritter to B. Horner re: Potential NRC question PROD00022022 Spreadsheet titled Unit 1 HELB Piping PROD00022023 6/23/2009 Email from T. Asmus to J. Ritter and P. Knoespel re: Preliminary HEP for isolation of CL line break PROD00022024 6/23/2009 Basic Event Summary re: CL line break PROD00022025 Power Point presentation titled CCHELB/Flooding Program Direction (5/11/2009)

PROD00022026 NRC Question Response Form re: piping related to SDP PROD00022027 NRC Question Response Form re: piping related to SDP PROD00022028 NRC Question Response Form re: CCW/Turbine Building SDP summary report PROD00022029 NRC Question Response Form re: piping related to SDP PROD00022030 1/7/2009 Email from J. Ritter to T. Asmus and P. Knoespel re: Question on CVCS dependency on CC PROD00022031 6/2/2009 Email from J. Ritter to K. Fleming re: Question on HELB pipe break failure rate data PROD00022032 3/19/2009 Email from J. Ritter to J. Carver and T. Borgen re: RCP seal injection restoration PROD00022033 3/23/2009 Email from J. Ritter to J. Gehlhar re: responses to CC/HELB questions PROD00022034 3/23/2009 Email from J. Ritter to B. Slack re: Unit 1 line 12-CD-7 piping PROD00022035 3/23/2009 Email from J. Ritter to K. Den Herder re: line 12-CD-7 piping PROD00022036 6/17/2009 Email from J. Ritter to C.J. Sansome and B. Slack re: pipes 12-CL-67 and 68 PROD00022037 3/16/2009 Email from J. Connors to D. Malek, M. Smutny, and J. Ritter re: heat stress environment in turbine building post-HELB PROD00022038 3/8/2009 Email from J. Ritter to D. Malek and R. Best re: Action items PROD00022039 3/8/2009 Email from J. Ritter to D. Malek and R. Best re: Action items PROD00022040 2/5/2009 Email from J. Ritter to B. Horner, W. Hadeka, and L. Johnson re: CVCS system PROD00022041 3/19/2009 Email from R. Best to D. Malek, M. Smutny, D. Herling, and J. Ritter re: NRC Response Form revisions PROD00022042 NRC Question Response Form re: evaluation of 12-MS-35 operating history PROD00022043 NRC Question Response Form re: operator response to fire alarms associated with a HELB PROD00022044 NRC Question Response Form re: operations staffing during plant operation PROD00022045 1/28/2009 Email from J. Ritter to D. Malek re: addendum to Success of Standby Charging Pump During Loss of CC Event PROD00022046 7/15/2009 Email from J. Ritter to J. Julius, J. Grobbelaar, and others re: preliminary NRC white finding PROD00022047 2/25/2009 Email from L. Kozak at NRC to J. Ritter re: Additional information for CC/HELB SDP PROD00022048 2/25/2009 Email from M. Huting to J. Ritter re: Additional information for CC/HELB SDP PROD00022049 5/6/2009 Email from J. Ritter to S. Skoyen re: Admin help with CC/HELB SDP document collection PROD00022050 3/16/2009 Email from J. Ritter to M. Smutny and D. Malek re: operations question for CC/HELB action PROD00022051 3/16/2009 Email from M. Smutny to J. Ritter and D. Malek re: operations question for CC/HELB action PROD00022052 3/5/2009 Email from J. Ritter to T. Bacon re: operations question for CC/HELB PROD00022053 3/9/2009 Email from T. Bacon to J. Ritter re: operations question for CC/HELB PROD00022054 3/5/2009 Email from T. Bacon to J. Ritter re: operations question for CC/HELB PROD00022055 5/6/2009 Email from J. Ritter to J. Carver re: question for CC/HELB SDP 72

Document Number Description PROD00022056 5/6/2009 Email from M. Smutny to J. Ritter re: question for CC/HELB SDP PROD00022057 6/3/2009 Email from R. Best to D. Malek and others at Xcel re: Jet impingement PROD00022058 6/3/2009 Email from D. Malek to R. Best and J. Ritter re: Jet impingement PROD00022059 4/6/2009 Email from J. Ritter to B. Slack re: report on CC piping in TB from HELB events PROD00022060 4/6/2009 Email from J. Ritter to B. Slack re: CC piping in TB from HELB events PROD00022061 4/6/2009 Email from J. Ritter to B. Slack re: CC piping in TB from HELB events PROD00022062 4/6/2009 Email from J. Ritter to B. Slack re: CC piping in TB from HELB events PROD00022063 4/4/2009 Email from J. Ritter to A. Setlur at AES Engineering, B. Slack, and C. Agan re: CC piping in TB from HELB events PROD00022064 4/3/2009 Email from J. Ritter to A. Setlur at AES Engineering re: CC piping in TB from HELB events PROD00022065 4/6/2009 Email from B. Slack to J. Ritter re: CC piping in TB from HELB events PROD00022066 4/6/2009 Email from B. Slack to J. Ritter re: CC piping in TB from HELB events PROD00022067 4/6/2009 Email from B. Slack to J. Ritter re: CC piping in TB from HELB events PROD00022068 4/6/2009 Email from B. Slack to J. Ritter re: CC piping in TB from HELB events PROD00022069 4/6/2009 Email from B. Slack to J. Ritter re: CC piping in TB from HELB events PROD00022070 3/1/2009 Summary of Component Cooling Water/Turbine Building Issue Risk Significance PROD00022071 1/20/2009 Memo from B. Horner to S. Northard re: CC piping adjacent to HELB location and related CAP PROD00022072 Notes from 3/9/2009 discussion with Jack Geissner from NRC PROD00022073 6/4/2009 Email from J. Ritter to R. Best re: calculation file for SDP for cooling PROD00022074 2/16/2009 Email from P. Knoespel at EPM, Inc. to R. Rohrer and others at Xcel re: calculation of HEP for swap of RMU tanks PROD00022075 5/9/2009 Email from J. Ritter to R. Best and D. Malek re: calculation of CC surge tank draindown time PROD00022076 6/2/2009 Email from J. Ritter to D. Henry, B. Slack, and others re: jet impingement analysis of cooling water lines PROD00022077 6/3/2009 Email from B. Slack to J. Ritter, D. Henry, and others re: jet impingement analysis PROD00022078 1/20/2009 Email from J. Ritter to M. Loosbrock, B. Horner, and M. Brossart re: CC/HELB issue - use of X-connect valves PROD00022079 1/19/2009 Email from J. Ritter to M. Loosbrock re: CC/HELB issue - use of X-connect valves PROD00022080 2/18/2009 Email from C. Gjermo to J. Ritter re: CC/HELB issue - use of X-connect valves PROD00022081 1/20/2009 Email from B. Horner to M. Loosbrock and J. Ritter re: CC/HELB questions PROD00022082 NRC Question Response Form re: HELB and seismic analysis PROD00022083 2/2/2009 Email from C. Gjermo to J. Ritter and D. Fricke re: CC piping in turbine building PROD00022084 3/15/2009 Email from J. Ritter to K. Den Herder, D. Malek, and others at Xcel re: CC/HELB PROD00022085 NRC Question Response Form re: 12-MS-25 line (De-aerating Steam Line)

PROD00022086 3/15/2009 Email from K. Den Herder to D. Malek, J. Ritter, and others at Xcel re: CC/HELB PROD00022087 2/27/2009 Email from J. Ritter to J. Olvera at EPM, Inc. re: CC/HELB MAAP question from NRC PROD00022088 Chart titled RCP Seal LOCA - Liquid Leakage Rate PROD00022089 2/27/2009 Email from J. Olvera at EPM, Inc. to J. Ritter and J. Masterlark re: CC/HELB MAAP question from NRC 73

Document Number Description PROD00022090 Completed NRC Question Response Form re: operational history of 12-MS-25 line (De-aerating Steam Line)

PROD00022091 6/5/2009 Email from J. Ritter to R. Best and D. Malek re: CC/HELB report edits PROD00022092 6/5/2009 Email from R. Best to J. Ritter and D. Malek re: CC/HELB report edits PROD00022093 3/26/2009 Email from J. Ritter to J. Olvera and P. Knoespel re: CC/HELB SDP additional MAAP analysis PROD00022094 3/20/2009 Email from J. Ritter to J. Olvera and P. Knoespel re: CC/HELB SDP additional MAAP analysis PROD00022095 3/27/2009 Email from J. Ritter to P. Knoespel and J. Olvera re: CC/HELB SDP additional MAAP analysis PROD00022096 3/26/2009 Email from J. Ritter to P. Knoespel and J. Olvera re: CC/HELB SDP additional MAAP analysis PROD00022097 3/25/2009 Email from J. Olvera to J. Ritter re: CC/HELB SDP additional MAAP analysis PROD00022098 3/24/2009 Email from J. Olvera to J. Ritter re: CC/HELB SDP additional MAAP analysis PROD00022099 3/23/2009 Email from J. Olvera to J. Ritter re: CC/HELB SDP additional MAAP analysis PROD00022100 3/16/2009 Email from J. Olvera at EPM, Inc. to J. Ritter and P. Knoespel re: CC/HELB SDP additional MAAP analysis PROD00022101 3/26/2009 Email from P. Knoespel at EPM, Inc. to J. Olvera and J. Ritter re: CC/HELB SDP additional MAAP analysis PROD00022102 5/11/2009 Email from J. Ritter to J. Carver re: CC/HELB SDP question on tornado event PROD00022103 5/11/2009 Email from J. Ritter to J. Carver re: CC/HELB SDP question on tornado event PROD00022104 5/13/2009 Email from M. Smutny to J. Ritter re: CC/HELB SDP question on tornado event PROD00022105 3/10/2009 Memo from D. Malek from S. Northard re: status of turbine building HELB/CC piping SDP PROD00022106 Power Point presentation titled CC/HELB NRC Meeting (6/3/2009)

PROD00022107 10/20/2009 Email from J. Ritter to M. Smutny, J. Carver, and T. Borgen re: CL flooding due to HELB and meeting with fire brigade chiefs PROD00022108 10/22/2009 Email from M. Smutny to J. Ritter, J. Carver, and T. Borgen re: CL flooding due to HELB and meeting with fire chief brigade PROD00022109 10/20/2009 Email from M. Smutny to J. Ritter and J. Carver re: CL flooding due to HELB and meeting with fire chief brigade PROD00022110 6/24/2009 Email from J. Ritter to J. Carver re: CL flooding question PROD00022111 6/23/2009 Email from J. Ritter to J. Carver re: CL flooding question PROD00022112 6/24/2009 Email from P. Knoespel at EPM, Inc. to J. Ritter and T. Asmus re: CL flooding question PROD00022113 4/25/2009 Email from J. Ritter to B. Slack re: Collection of HELB piping data PROD00022114 Spreadsheet titled RCP Seal LOCA Timing PROD00022115 7/13/2009 Email from J. Ritter to J. Carver re: NRC findings and results PROD00022116 3/26/2009 Email from J. Ritter to B. Horner, D. Malek, R. Best, and L. Johnson re: containment and RCS pressure PROD00022117 1/9/2009 Email from B. Slack to J. Ritter and S. Ford re calculation for CC tank draindown time following HELB in turbine building PROD00022118 7/2/2009 Email from J. Ritter to C. Koehler re incorporating backflow from CL return header into flooding scenario PROD00022119 7/2/2009 Email from C. Koehler to J. Ritter re operator actions to stop CL flooding PROD00022120 7/2/2009 Email from C. Koehler to J. Ritter re incorporation of contribution of CL flow in flooding scenario PROD00022121 6/15/2009 Email from J. Ritter to D. Malek re comments to write-up for NRC question 5 response PROD00022122 Write-up for response to NRC question 5 re flow rates used in flooding scenario 74

Document Number Description PROD00022123 6/16/2009 Email from D. Malek to J. Ritter re comments to write-up for NRC question 5 response PROD00022124 Write-up for response to NRC question 5 re flow rates used in flooding scenario PROD00022125 6/15/2009 Email from D. Malek to J. Ritter re revisions to D. Potter's write-up for NRC Question 5 PROD00022126 Response to Question 5 for NRC form re flow rates used in flooding scenario PROD00022127 5/20/2009 Email from J. Ritter to J. Olvera of EPM re timeline for final report on analysis of HELB/CCW simulation runs PROD00022128 5/20/2009 Email from J. Olvera of EPM to J. Ritter re revision to draft analysis report for HELB/CCW simulation runs PROD00022129 5/13/2009 Email from J. Ritter to J. Olvera re draft analysis report for HELB with loss of CCW simulation runs PROD00022130 6/17/2009 Email from J. Ritter to D. Malek re responses to comments on draft NRC response form PROD00022131 6/10/2009 NRC Question Response form re documents provided and questions answers re CCW/Turbine building SDP PROD00022132 6/17/2009 Email from R. Best to J. Ritter re comments on draft NRC response form PROD00022133 6/10/2009 NRC Question Response Form re information on FAC screening PROD00022134 6/17/2009 Email from R. Best to J. Ritter re comments on draft of NRC response form PROD00022135 6/17/2009 Email from R. Best to J. Ritter re progress on completion of NRC response form PROD00022136 2/27/2009 Email from J. Ritter to T. Bacon re Draft Summary of HELB/CC procedure progression and operation actions PROD00022137 2/27/2009 Summary of Xcel Analysis Performed: PINGP Component Cooling Water/Turbine Building Issue Risk Significance PROD00022138 5/6/2009 Email from J. Ritter to K. Kriesel re documents for Dynamic Stress Analysis of the FW/CD piping PROD00022139 5/5/2009 Email from J. Ritter to D. Smith re plant response plots for ECA-1.1 actions simulation PROD00022140 5/5/2009 Email from J. Ritter to D. Smith re actions factored into LOCA procedure model PROD00022141 5/5/2009 Email from J. Ritter to D. Smith re factoring dumping of SI accumulators into LOCA model PROD00022142 5/5/2009 Email from J. Ritter to J. Olvera of EPM re parameters used in simulation to generate LOCA plots PROD00022143 5/5/2209 Email from J. Olvera to J. Ritter re results of simulator runs for LOCA with loss of CCW PROD00022144 Graphs depicting results from EPM simulator runs of RCP seal LOCA with loss of CCW PROD00022145 5/4/2009 email from J. Olvera of EPM to J. Ritter re results of simulator runs for LOCA with loss of CCW PROD00022146 Graphs depicting relative parameters for LOCA with loss of CCW PROD00022147 5/5-4/2009 Email from J. Ritter to J. Olvera of EPM re depressurization procedure following LOCA PROD00022148 5/3/2009 Email from J. Ritter to J. Olvera of EPM re depressurization procedure following LOCA PROD00022149 3/17/2009 Email from K. Vincent to J. Ritter re flooding in the turbine building PROD00022150 1/28/2009 Email from J. Ritter to D. Smith re interpretation of figure ECA11-1 in procedure manual PROD00022151 1/29/2009 Email from D. Smith to J. Ritter re procedure to remove SG heat following LOCA due to HELB PROD00022152 1/28/2009 Email from D. Smith to J. Ritter re removal of decay heat during LOCA following HELB PROD00022153 4/17/2009 Email from J. Loesch to J. Ritter re operator training frequency PROD00022154 11/14/2008 Email from J. Ritter re P. Knoespel re interpretation of HELB break size categories PROD00022155 1/23/2009 Email from J. Ritter to K. DenHerder re response to NRC questions about FAC components PROD00022156 12/17/2008 Email from J. Ritter to K. DenHerder re pipe composition for CC/HELB assessment PROD00022157 4/4/2009 Email from J. Ritter to K. Flemming of TI-SD re calculations for HELB pipe failure rates PROD00022158 3/30/2009 Email from J. Ritter to K. Flemming of TI-SD re draft report on HELB failure rates 75

Document Number Description PROD00022159 4/4/2009 Email from K. Flemming to J. Ritter re HELB pipe break frequency calculations PROD00022160 7/13/2009 Email from A. Limaye to B. Horner re NRC review of MRP report PROD00022161 6/5/2009 Email from D. Malek to R. Rohrer re models to use in CC/HELB for SDP report PROD00022162 5/14/2009 Email from R. Best to W. Djordjevic of S & A re GH structure analysis for final report on PINGP external event fragility PROD00022163 5/2009 Draft report - External Event Fragilities for Component Cooling System in Turbine Building prepared by S & A PROD00022164 3/11/2009 Email from J. Ritter to W. Scholberg re condensate pump activity following HELB PROD00022165 3/11/2009 Email from W. Scholberg to J. Ritter re condensate pump activity following HELB PROD00022166 Procedure for monitoring degradation of CW piping expansion joints PROD00022167 3/31/2009 Email from W. Scholberg to J. Ritter re flooding impact on the turbine building from a postulated HELB break in the FW lines PROD00022168 4/21/2009 Email from B. Slack to J. Ritter re pipe break analysis PROD00022169 3/31/2009 Email from K. Flemming of TI-SD to J. Peterson re pipe break analysis report PROD00022170 V.SPA.08.008 - Addendum 8 - HELB Pipe Break Frequency Calculations PROD00022171 11/17/2008 Email from J. Ritter to P. Knoespel re EPRI report for modeling HELB PROD00022172 12/1/2008 Email from J. Ritter to R. Best and D. Malek re HELB component count and break frequency calculation PROD00022173 3/25/2009 Email from J. Olvera of EPM to J. Ritter re pressures used in HELB modeling PROD00022174 3/25/2009 Email from P. Knoespel of EPM to J. Ritter re cooling water flow for modeling HELB PROD00022175 6/17/2009 Email from J. Ritter to B. Horner re response to NRC questions PROD00022176 6/10/2009 NRC Question Response Form re information on component screening PROD00022177 6/17/2009 Email from B. Horner to J. Ritter re information for NRC response PROD00022178 Table summarizing history of high temperature o-ring use at PINGP PROD00022179 3/19/2009 Email from J. Ritter to K. Slingsby re data for modeling natural cool down event PROD00022180 3/18/2009 Email from J. Ritter to L. Lisson re cool down information for modeling Natural Cool down Event PROD00022181 6/3/2009 Email from D. Malek to R. Best re documents for human reliability analysis post HELB initiating event PROD00022182 List of documents for human reliability analysis of HELB procedures PROD00022183 5/6/2009 Email from J. Ritter to B. Horner re O-ring ultimate failure pressure for LOCA modeling PROD00022184 5/10/2009 Email from J. Ritter to M. Smutny and T. Borgen re HELB scenario for human reliability training PROD00022185 4/30/2009 Email from J. Ritter to J. Carver HELB scenario for human reliability training PROD00022186 6/16/2009 Email from D. Malek to J. Ritter re HELB/CC piping interactions PROD00022187 6/4/2009 Email from J. Ritter to D. Malek and R. Best re HELB Design Basis Break criteria PROD00022188 V.SPA.08.008 Addendum 8, Part 2 - HELB pipe break frequency using HELB design basis break criteria PROD00022189 6/4/2009 Email from R. Best to J. Ritter re HELB Initiating Event Frequency Calculations PROD00022190 5/18/2009 Email from J. Ritter to J. Loesch re training scenario CC-2 PROD00022191 5/18/2009 Email from J. Ritter to J. Loesch re operator training frequency PROD00022192 5/18/2009 Email from J. Ritter to J. Loesch re operator training frequency PROD00022193 5/18/2009 Email from J. Ritter to J. Loesch re operator training frequency 76

Document Number Description PROD00022194 5/18/2008 Email from J. Ritter to J. Loesch re training frequency and 7/2008 revision of EO-11SF-1 PROD00022195 5/18/2009 Email from J. Loesch to J. Ritter re operator training frequency PROD00022196 5/18/2009 Email from J. Loesch to J. Ritter re operator training frequency PROD00022197 5/18/2008 Email from J. Ritter to J. Loesch re Job performance testing frequency PROD00022198 5/18/2009 Email from J. Loesch to J. Ritter re Job performance training frequency PROD00022199 3/19/1996 Job Performance Measure Worksheet PROD00022200 1/19/2009 Letter from Xcel Energy to NRC re LER 2-08-01 Unanalyzed Condition Due to Both Trains of Component Cooling Being Susceptible to a Postulated HELB Supplement 1 PROD00022201 Loss of Shutdown Cooling While in an Outage Risk Impact PROD00022202 4/1/2009 Email from J. Ritter to J. Olvera of EPM re post LOCA modeling parameters PROD00022203 4/1/2009 Email from J. Ritter to J. Olvera of EPM re documentation for post LOCA modeling PROD00022204 3/30/2009 Email from J. Ritter to J. Olvera of EPM re comments on post LOCA modeling PROD00022205 3/28/2009 Email from J. Ritter to J. Olvera of EPM re post LOCA modeling PROD00022206 4/1/2009 Email from J. Olvera of EPM to J. Ritter re post LOCA modeling PROD00022207 3/30/2009 Email from J. Olvera of EPM to J. Ritter re post LOCA modeling PROD00022208 4/28/2009 Email from J. Ritter to J. Olvera re modeling cool down and depressurization procedures post LOCA PROD00022209 4/27/2009 Email from J. Ritter to J. Olvera of EPM re post LOCA modeling PROD00022210 4/26/2009 Email from J. Ritter to J. Olvera of EPM re runs of post LOCA models PROD00022211 4/26/2009 Email from J. Ritter to J. Olvera of EPM re post LOCA modeling PROD00022212 1/30/2009 Email from J. Ritter to J. Olvera of EPM re post LOCA modeling PROD00022213 1/29/2009 Email from J. Ritter to J. Olvera of EPM re post LOCA modeling PROD00022214 1/29/2009 Email from J. Ritter to J. Olvera and others at EPM re additional modeling parameters PROD00022215 1/30/2009 Email from J. Ritter to J. Olvera of EPM re post LOCA modeling PROD00022216 1/29/2009 Email from J. Ritter to J. Olvera of EPM re modeling post LOCA procedures PROD00022217 1/11/2008 2ES-1.1 Rev. 18 Post LOCA procedure manual PROD00022218 3/9/2009 Email from J. Olvera to J. Ritter re modeling LOCA post HELB/CC event PROD00022219 3/4/2009 Email from J. Olvera to J. Ritter re modeling operator response following HELB PROD00022220 Procedure steps re LOCA response PROD00022221 4/29/2009 Email from J. Ritter to J. Olvera re modeling operator actions in HELB scenario PROD00022222 6/11/2009 Email from J. Ritter to D. Malek re comments on draft NRC response PROD00022223 6/10/2009 NRC Question Response Form re requested documents and descriptions PROD00022224 6/11/2009 Email from R. Best to D. Malek re update to NRC response PROD00022225 6/11/2009 Email from D. Malek to J. Ritter cc R. Best re responses to comments re NRC request PROD00022226 6/10/2009 NRC Question Response Form re requested documents and descriptions PROD00022227 6/11/2009 Email from D. Malek to J. Ritter cc. R. Best re NRC information request PROD00022228 6/10/2009 NRC Question Response Form re requested documents and descriptions PROD00022229 6/11/2009 Email from D. Malek to R. Best re NRC call summary 77

Document Number Description PROD00022230 6/10/2009 Summary of Discussion with NRC PROD00022231 Notes for power point presentation to NRC re CCHELB information submittal PROD00022232 Additional notes for power point presentation to NRC re CCHELB information submittal PROD00022233 Management update to 3/9/2009 discussion with Jack Geissner (NRC) on CC/HELB SDP issues PROD00022234 02/05/2009 Email from J Ritter to B Slack re NRC question about HELB lines PROD00022235 06/17/2009 Email from J Ritter to R Best and B Horner re reference 33 in SDP summary report PROD00022236 11/10/2009 Email from B Horner to J Ritter re Operator response time for CC/HELB Scenario SDP comparison PROD00022237 02/17/2009 Email from J Ritter to J Hanson answering questions re operator review of RMW pump operation and tank swap over PROD00022238 02/04/2009 Email from J Ritter to R Best re PI MAAP run files for Level I issues for RG 1-200 PROD00022239 05/01/2009 Email from D Smith to J Ritter re PI SDP Simulator Runs PROD00022240 04/24/2009 Email from J Julius to J Grobbelaar & J Ritter re PI SDP Simulator Runs and PINGP procedures PROD00022241 08/03/2009 Email from D Malek to Stan Guokas and J Ritter re removal of CC dependency for sump recirculation PROD00022242 12/19/2008 Email from J Ritter to B Horner re potential NCR questions (RCP Pump Cooling and Charging verses CC)

PROD00022243 12/19/2008 Email from J Ritter to B Horner re potential NRC question on RCP pump cooling PROD00022244 V.SPA.08.008, Addendum 5 Volume Control Tank Simulator Case Study PROD00022245 02/10/2009 Email from J Ritter to B Horner re additional information provided to the NRC on CC/HELB SDP questions PROD00022246 02/11/2009 Email from J Ritter to K DenHerder re discussion of NRC potential information request PROD00022247 02/11/2009 Email from J Ritter to K DenHerder re additional information sent to the NRC on the success criteria for LOCA PROD00022248 04/07/2009 Email from J Ritter to J Olvera re PRA calculations PROD00022249 04/06/2009 Email from J Ritter to J Olvera re small LOCA event tree PROD00022250 04/05/2009 Email from J Ritter to J Olvera re proposed revalidation method PROD00022251 04/07/2009 Email from J Olvera to J Ritter re PRA calculation differences PROD00022252 04/06/2009 Email from J Olvera to J Ritter re rerunning the SDP cases HELBREC with the final FIA parameter file PROD00022253 04/05/2009 Email from J Olver to J Ritter re differences in the FAI parameter file PROD00022254 03/18/2009 Email from J Ritter to R Best et al re content of proposal of seismic and tornado PROD00022255 04/24/2009 Email from J Ritter to tja@epm-inc.com re HEP to isolate the CL line break in the turbine building PROD00022256 04/27/2009 Email from J Ritter to J Olvera re MAAP Run results, cases 1&2 PROD00022257 06/05/2009 Email from D Malek to R Best & J Ritter re proposed statements on the CC piping PROD00022258 06/23/2009 Email from C Sansome to J Ritter re CL evaluation questions PROD00022259 06/10/2009 NRC Question response form requested by K Stoedter and P Zurawski PROD00022260 06/10/2009 NRC Question Response Form from K Stoedter and P Zurawski PROD00022261 06/17/2009 mail from J Ritter to B Slack and D Malek re response to NRC about preliminary flow rate results PROD00022262 06/17/2009 Email from J Ritter to B Slack and D Malek re response to NRC, change to comments PROD00022263 06/17/2009 E mail from J Ritter to B Slack and D Malek re changes to the NRC response PROD00022264 Question re flow rates from the NRC and response 78

Document Number Description PROD00022265 06/17/2009 Email from J Ritter to B Slack re suggested changes to NRC question 5 PROD00022266 Question from the NRC re flow rates and response PROD00022267 06/17/2009 Email from J Ritter to B Slack and D Malek re response to NRC PROD00022268 NRC question and reply re flow rates for the CL system PROD00022269 Response to NRC request for cooling water break scenarios and flow-rates PROD00022270 06/17/2009 Email from J Ritter to B Slack and D Malek re response to NRC questions 6/17/2009 email from J. Ritter to B. Slack re: NRC response regarding potential CL break scenarios PROD00022271 6/17/2009 email from B. Slack to D. Malek, J. Ritter re: NRC response regarding potential pipe interaction failures PROD00022272 06/17/2009 Email from B Slack to D Malek and J Ritter re response to NRC questions PROD00022273 Table 10 - Summary of CC-HELB Piping Interactions on CL Piping PROD00022274 06/17/2009 Email from B Slack to D Malek and J Ritter re response to NRC questions PROD00022275 06/17/2009 Email from B Slack to D Malek and J Ritter re response to NRC questions PROD00022276 06/29/09 Email from J Ritter to R Best and D Malek re AFW pump room flooding and comments in the AFW notebook PROD00022277 06/03/2009 Email from J Ritter to K Fleming re HELB/Jet Impingement Design Criteria PROD00022278 06/03/2009 Email from J Ritter to K Fleming re HELB pipe break failure rate data PROD00022279 10/31/2009 Email from J Riter to R Best & D Malek re letdown isolation following normal trip PROD00022280 1/11/2009 Email from J Ritter to B Horner re response to the NRC's question on RCP Seal LOCA PROD00022281 responses to follow up questions re SAMA RAIs for PINGP PROD00022282 02/09/2009 Email from D Malek to J Ritter re responses to NRC questions re turbine building HELB/CC piping interaction questions PROD00022283 Direction to operators to manually align the RWST to charging pump suction PROD00022284 04/07/2009 Email from J Grobbelaar to J Ritter re discussion of the HEP for transfer to high head recirculation PROD00022285 04/28/2009 Email from J Ritter to W Hadeka and B Horner re report for the operability evaluation of the PINGP SI sump bearing and shaft seals PROD00022286 06/12/2009 Email from S Skoyen to J Ritter, D Malek and B Horner re report comments for the MPR analyses PROD00022287 04/01/2009 Email from J Ritter to T Borgen re discussion of CC HELB scenarios/event consequences PROD00022288 V.SPA.08.008, Addendum 4 - Remove CC dependency for SI and RHR system fault trees prepared by D Malek 04/25/2009 PROD00022289 V.SPA.09.001 Calculation to determine the time when cooling is in service during a refueling outage prepared by J Ritter 01/25/2009 PROD00022290 07/17/2009 Email from M Huting to J Ritter re NCR white finding on CC/HELB PROD00022291 07/17/2009 Email from J Ritter to M Huting re NRC white finding on CC/HELB PROD00022292 White paper for CCHELB outcome and continued efforts PROD00022293 Calculation of the draindown time of the CC surge tank following a pipe break in the turbine building PROD00022294 05/18/2009 Email from J Ritter to D Malek and R Best re LER RHR Gas Voiding and the suggested safety significance PROD00022295 Regulatory correspondence review and approval record for LER 1-09-04, Non-conforming condition due to RHR system gas voiding 79

Document Number Description PROD00022296 02/23/2009 Email from D Malek to J Grobbelaar & J Ritter re discussion of RMU HEP and valve closure situations PROD00022297 02/22/2009 Email from D Malek to J Ritter re discussion of RMU HEP and valve closure situations PROD00022298 02/20/2009 Email from D Malek to J Grobbelaar & J Ritter re discussion of RMU Help, alarms and accident scenarios PROD00022299 02/20/2009 Email from D Malek to J Grobbelaar and J Ritter re RMU Help, transition valves to the turbine building PROD00022300 02/19/2009 Email from D Malek to J Grobbelaar and J Ritter re RMU HEP, CC line going to the turbine building PROD00022301 02/19/2009 Email from D Malek to J Grobblear & J Ritter re RMU HEP, valves used to isolate U2 CC lines PROD00022302 03/02/2009 Email from J Ritter to B Horner and C Lethgo re RMU tank roof and caution 3.1 PROD00022303 NRC Question response form, CC/HELB SDP information PROD00022304 02/25/2009 Email from J Ritter to B Horner re response to the NRC re the RMU tank roof PROD00022305 02/16/2009 Email from D Malek to J Ritter re analysis for the Unit 2 RMW System failure probability PROD00022306 03/03/2009 Email from J Ritter to M Smutny re RWST refill levels during an accident PROD00022307 03/03/2009 Email from M Smutny to J Ritter re RWST re RWST refill levels during an accident PROD00022308 05/02/2009 Email from J Ritter to J Olvera and R Best re RHR pumps and RWST depletion PROD00022309 06/11/2009 Email from R Best to D Malek & J Ritter re summary and discussion of NRC conference call on 6/10/09 PROD00022310 01/18/2009 Email from J Ritter to J Masterlark and J Olvera re discussion of O-Rings used in the CC/HELB SDP PROD00022311 01/15/2009 Email from J Ritter to W Hadeka, B Horner and L Johnson re SI pump availability for SDP analysis PROD00022312 03/11/2009 Email from B Horner to J Gehlar, J Ritter and D Malek re running a simulator case study on loss of CC and impact on VCT PROD00022313 03/13/2009 Email from J Ritter to M Smutny and D Malek re questions on simulator for CC and affected SI pump PROD00022314 05/03/2009 Email from J Ritter to B Horner, D Malek and R Best re discussion of the revised executive summary section of a MPR report PROD00022315 05/03/2009 Email from J Ritter to R Best re RHR flow information for MPR report PROD00022316 05/03/2009 Email from J Ritter to R Best and D Malek re information on ultimate limiting temperatures in the sump for the executive summary of the report PROD00022317 11/07/2008 Email from J Ritter to R Rohrer, J Masterlark, M Brossart and S Skoyen re 11/06/2009 conference call discussing information requested by the NRC PROD00022318 11/07/2009 Email from J Ritter to P Knoespel re discussion of SDP information requested by the NRC PROD00022319 11/07/2009 Email from J Ritter to P Knoespel re summary of SDP discussion with the NRC PROD00022320 06/05/2009 Email from J Ritter to R Best re CC/HELB information requested by the NRC PROD00022321 06/05/2009 Email from R Best to J Ritter re information requested by the NRC, CC/HELB interactions with CL piping PROD00022322 03/21/2009 Email from D Malek to J Ritter re discussion of spent fuel pool/component cooling lines PROD00022323 02/12/2009 Email from S Myers to J Ritter re sending a temperature sensitivity study to the NRC PROD00022324 07/10/2009 Email from D Malek to R Rohrer and J Ritter re conference call and accepting a NRC white finding PROD00022325 03/18/2009 Email from B Slack to W Scholberg et al re fire protections lines during HELB events PROD00022326 02/10/2009 Email from J Ritter to D Smith re discussion of possible scenarios with HELB and CC piping interactions PROD00022327 02/05/2009 Email from J Ritter to J Kempkes, B Horner and T Bacon re questions on the CVCS system PROD00022328 03/05/2009 Email from D Smith to J Ritter and T Bacon re SI Pump running due to a LOCA, Q&A 80

Document Number Description PROD00022329 02/09/2009 Email from D Smith to J Ritter re how operators are directed to perform a manual swap of the RWST when automatic actions fail PROD00022330 02/06/2009 Email from J Kempkes to J Ritter, B Horner and T Bacon re what operators do when MV-320260 cannot be opened remotely or locally PROD00022331 02/06/2009 Email from J Kempkes to B Horner, J Ritter, L Johnson and T Bacon re single charging pump operation during normal operation PROD00022332 02/05/2009 Email from J Kempkes to B Horner, J Ritter and T Bacon re procedures for charging pumps during failures PROD00022333 directions to operators to manually align the RWST to charging pump suction PROD00022334 02/06/2009 Email from B Horner to J Kempkes, J Ritter, L Johnson, and T Bacon re single charging pump operation during normal operation PROD00022335 02/06/2009 Email from T Asmus (tja@epm_inc.com) to J Ritter re procedures or training that direct if MV-32060 fails to open PROD00022336 02/04/2009 Email from J Ritter to M Wadley and B Horner re TDAFW Pump HEP issues PROD00022337 01/15/2009 Email from J Ritter to B Horner re size of CC piping PROD00022338 03/19/2009 Email from J Ritter to K Den Herder re clarifying questions on 12-CD-7 PROD00022339 Email from K DenHerder to J Ritter re questions about HELB lines PROD00022340 03/12/2009 Email from J Ritter to K DenHerder re 12-CD-7 and the FAC Program PROD00022341 02/04/2009 Email from M Wadley to J Ritter re reasons for CC/HELB walkthroughs PROD00022342 03/09/2009 Email from D Smith to D Malek and J Ritter re explanation of his answer to Action 31 from NRC request.

PROD00022343 Write up of available information re temperatures and pressures in the turbine building.

PROD00022344 01/15/2009 Email from B Slack to B Horner, J Ritter & L Johnson re 1" lines from out of the cold chem lab PROD00022345 02/04/2009 Email from Tom Asmus (tja@epm-inc.com) to J Ritter re discussion of walkthrough operations PROD00022346 11/20/2009 Email from J Ritter to R Best re RMW area questions, HELB in the Turbine Building PROD00022347 Scenario for loss of offsite power during full power operations PROD00022348 05/08/2009 Email from J Ritter to J Grobbelaar re update to HEP - OLRCPVC11XY PROD00022349 Memo to J Ritter re update on the latest priorities on HRA actions PROD00022350 11/24/2008 Email from J Ritter to R Best and D Malek re write-up on the RMW operation action PROD00022351 RMW Tank Data PROD00022352 V.SPA.08.008 Component Cooling Piping Interaction with Turbine Building HELB Piping Significance Determination Process prepared by J Ritter 11/24/2008 PROD00022353 05/29/2009 Email from J Ritter to J Grobbelaar re update to OLRCPVC11XY report PROD00022354 06/04/2009 Email from J Ritter to R Best and D Malek re HELB IEF Update PROD00022355 06/04/2009 Email from R Best to J Ritter and D Malek re questions about HELB IE data PROD00022356 06/04/2009 Email from R Best to J Ritter & D Malek re HELB IE data and NRC opinion PROD00022357 6/3/2009 Email from J Ritter to R Best & D Malek re changes made to V SPA 08 008/ET Notebook PROD00022358 6/3/2009 V.SPA.08.008, Addendum 12 CC-HELB SDP Event Trees PROD00022359 6/2/2009 Email from R Best to J Ritter and D Malek re changes made to V SPA 08 008 Addendum 12 81

Document Number Description PROD00022360 V.SPA.08.008, Addendum 12 CC-HELB SDP Event Trees 06/30/2009 PROD00022361 V.SPA.08.008, Addendum 12 CC-HELB SDP Event Trees 06/30/2009 PROD00022362 Verification form for V.SPA.08.008, Addendum 12 CC-HELB SDP Event Trees PROD00022363 V.SPA.08.008, Addendum 8 HELB Pipe Break Frequency Calculation PROD00022364 V.SPA.09.001, Calculation to determine the time when cooling is in service during a refueling outage PROD00022365 03/04/2009 Email from B Horner to J Ritter re VCT simulator case performed for letdown isolation PROD00022366 03/08/09 draft memo to S Northard from D Malek re CAP01145695 - CC piping in the Unit 1& 2 Turbine Building PROD00022367 Chart identifying and analyzing events that will possibly need corrective action PROD00022368 02/27/2009 Email from J Ritter to R Best re WR 43211 PROD00022369 Xcel Power point presentation, "CCHELB/Flooding Program Direction" 05/11/2009 PROD00022370 01/14/2009 Email from J Ritter to J O'Farrill re preliminary SDP update on CC/HELB PROD00022371 02/12/2009 Email from M Huting to J Ritter re Update on the preliminary CC/HELB SDP assessment date PROD00022372 02/12/2009 Email from J Ritter to M Huting re update on the preliminary CC/HELB SDP assessment date PROD00022373 Evaluation of Reactor Makeup Water Logic Change PROD00022374 Scenario for Unit 2 RMU system remaining available following a Unit 1 HELB event PROD00022375 05/30/2009 Email from J Ritter to D Malek & R Best re calculations for summary write up of seismic and tornado results PROD00022376 V.SPA.08.008, Addendum 4 External Event Fragilities for Seismic and Tornado Events PROD00022377 V.SPA.08.008, Addendum 2 - SDP Quantification PROD00022378 letter from Randy Best to Walter re: request for proposal to support Prairie Island turbine building systems seismic risk analysis PROD00022379 CC-HELB SDP Option 1 Draft A PROD00022380 CC-HELB Option 2 Draft A PROD00022381 CC/HELB assumptions PROD00022382 CC / HELB analysis PROD00022383 6/5/2009 PINGP Component Cooling Water / Turbine Building Issue Risk Significance - Summary of Xcel Energy Analysis Performed PROD00022384 6/4/2009 letter from Sulzer Pumps to Steve Skoyen re: review of past operability report PROD00022385 5/27/2009 Memo form Dave Malek to Kevin Ryan re: Communicate status of the turbine building HELB / CC piping significant determination process to Station Management PROD00022386 3/2009 Action assignments PROD00022387 Significance Determination Process (SDP) Questions Component Cooling Line Interactions with HELB Piping in the Turbine Building PROD00022388 3/1/2009 PINGP Component Cooling Water / Turbine Building Issue Risk Significance - Summary of Xcel Analysis Performed PROD00022389 2/5/2009 email from J. Ritter to J. Olvera re: pump operation during CC/HELB event simulation PROD00022390 3/3/2009 email from J. Ritter to B. Horner re: simulator case study of loss of CC and impact on VCT PROD00022391 4/29/2009 Simulator case notes 82

Document Number Description PROD00022392 3/11/2009 email from J. Ritter to T. Borgen, M. Halverson, S. Seilhymer re: HELB / CC Simulator Scenario development PROD00022393 3/9/2009 email from J. Ritter to T. Borgen, M. Halverson re: proposal for HELB / CC simulator case study PROD00022394 Initiating Event Resulting in a Unit 2 loss of Component Cooling, chart PROD00022395 5/2/2009 email from R. Rohrer to D. Malek, J. Ritter, and others at Xcel re: summary of meeting to address NRC treatment of Prairie Island's CC-HELB issue PROD00022396 3/20/2009 email from J. Ritter to D. Malek Re: spent fuel pool / CC lines discussion PROD00022397 2/5/2009 email from B. Horner to J. Kempkes re: turbine building HELB / CC piping interaction questions PROD00022398 Unit 1 and Unit 2 Component importance ranked by risk achievement worth PROD00022399 3/8/2009 memo from David Malek to Scott Northard re: HELB/CC piping significant determination process PROD00022400 1/29/2009 memo from Ben Horner to Scott Northard re: communicate status of the turbine building HELB/CC piping significance determination process to Station Management PROD00022401 2/5/2009 memo from Ben Horner to Scott Northard RE: Communicate status of the turbine building HELB/CC piping significance determination process to Station Management PROD00022402 HELB simulation discussion/time-line PROD00022403 Unit 1 HELB Pipe Break Calculation (Linear Foot Method)

PROD00022404 6/4/2009 V.SPA.08.008, Addendum 8, Part 1 - HELB Pipe Break Frequency Calculation Based on HELB Design Basis Criteria PROD00022405 HELB data PROD00022406 PDA Driven Turbine Building Flooding Events PROD00022407 5/28/2009 V.SPA.08.008, Addendum 8 - HELB Pipe Break Frequency Calculation PROD00022408 6/5/2009 V.SPA.08.008, Addendum 12 - CC-HELB SDP Event Trees PROD00022409 HELB Piping data PROD00022410 V.SPA.08.008, Addendum 8 - HELB Pipe Break Frequency Calculation PROD00022411 V.SPA.08.008, Addendum 9 - Operator walkdowns and simulator runs for component cooling piping interaction with turbine building HELB piping significance determination process PROD00022412 V.SPA.08.008, Addendum 12 6/5/2009 CC-HELB SDP Event Trees PROD00022413 V.SPA.08.008, Addendum 4 Remove CC dependency for SI and RHR system fault trees PROD00022414 3/1/2009 email from J. Ritter to R. Best Re: VCT draindown timing and effect on CC PROD00022415 1/26/2009 email from J. Ritter to tja@epm-inc.com Re: HELB calculations PROD00022416 HELB event analysis PROD00022417 06/07/2008 CC/HELB NRC Meeting, PowerPoint PROD00022418 2/13/2009 SDP summary of open issues - radioactive shipment and potential loss of component cooling water due to HELB PROD00022419 Fusetron Dual-Element, Time-Delay Fuses Class RK5 - 250 Volt PROD00022420 Transformer Technical data, terminology, and FAQs PROD00022421 Fuseology - Dual-Element Fuse Benefits 83

Document Number Description PROD00022422 Open Core and Coil Transformers PROD00022423 Bussman Non Time-Delay Fuse Operation PROD00022424 GE Combination Starter Basics PROD00022425 Current (amps) and Energy PROD00022426 CC HELB affect on opposite unit RMUP overloads PROD00022427 Evaluation to determine whether Unit 2 RMU pumps will continue to operate in temperature conditions caused by a loss of the Component Cooling Systems due to a HELB in the opposite Unit.

PROD00022428 Evaluation to determine whether Unit 2 RMU pumps will continue to operate in temperature conditions caused by a loss of the Component Cooling Systems due to a HELB in the opposite Unit.

PROD00022429 Evaluation to determine whether Unit 2 RMU pumps will continue to operate in temperature conditions caused by a loss of the Component Cooling Systems due to a HELB in the opposite Unit.

PROD00022430 Guide for Electric Motor Stator winding Insulation Design, Testing and VPI Resin Treatment PROD00022431 NEMA Standards Publication No. ICS 1-2000 (R2005, R2008) - Industrial Control and Systems Requirements PROD00022432 NEMA Standards Publication No. ICS 2-2000 (R2005) - Industrial Control and Systems Controllers, Contractors and Overload Relays Rated 600 Volts PROD00022433 Unit 1 Reactor Make-Up System Control PROD00022434 ETAP Powerstation User Guide Version 4.0 PROD00022435 ETAP Powerstation User Guide Version 4.0 PROD00022436 480 Volt Motor Control Center PROD00022437 Motor Control Centers, 1RD1, 1RD2, 1ED, 2EC, 1UAA PROD00022438 D5/D6 Building Motor Control Center PROD00022439 Undated EC 13857 evaluation to determine whether Unit 2 RMU pumps will continue to operate in temperature conditions caused by loss of Component Cooling system due to HELB in opposite unit.

PROD00022440 3/4/2009 Email from Bob S., Component Support at GE to Robert Flaaen re: motor control center environment PROD00022441 1990 GE Combination Starter Basics- A guide to understanding and selling combination starters PROD00022442 Undated EC 13857 portions of evaluation to determine whether Unit 2 RMU pumps will continue to operate in temperature conditions caused by loss of Component Cooling system due to HELB in opposite unit.

PROD00022443 8/3/1983 Specification File Record 480 Volt Motor Control Center File No. E25002 PROD00022444 8/3/1983 Specification File Record Motor Control Centers- Unit 2 File No. E 25003 PROD00022445 10/2004 Guide of Electric Motor Stator Winding Insulation Design, Testing and VPI Treatment, EPRI Technical Update PROD00022446 Undated documents re: CC HELB affect on opposite Unit RMUP PROD00022447 3/4/2009 Email From Steve Swain, GE Hitachi Nuclear Energy, to Robert Flaaen, PINGP re: Motor Starter operating in high heat PROD00022448 3/4/2009 Email From Steve Swain, GE Hitachi Nuclear Energy, to Robert Flaaen, PINGP re: Derating of components operating in high heat PROD00022449 3/25/2009 Email from Rick Mella to Ronald Whitlock re: overload de-rate at 22A, estimate of trip time 84

Document Number Description PROD00022450 2/22/2009 Letter from M. Schimmel to J. Muth and others at Xcel re: response to 9/11/2009 letter requesting a response on incorrectly completing Corrective Actions to Prevent Recurrence associated with Action Request 01188360 PROD00022451 3/4/2010 email from J. Kivi to L. Kuehl re: CAP Initiation PROD00022452 1/19/2009 email from J. Carver to M. Loosbrock re: Manipulation of cross-connect valves relative to Cooling Component HELB Issue PROD00022453 6/11/2010 NOS Observation Report # 2010-02-027 Assessment of CC HELB as input/preparation for the 95001 Inspection PROD00022454 Undated memo re: CC HELB 95001 Inspection Preparation and items that need to be attended to prior to Inspection PROD00022455 6/1/2010 Spreadsheet tracking progress of CC HELB review PROD00022456 Undated memo re: CC HELB Pre-95001 Inspection Preparation and proper timing and documentation by CAPs PROD00022457 Undated memo re: CC HELB Pre-95001 Inspection Preparation and proper timing and documentation by CAPs PROD00022458 Undated memo re: CC HELB Pre-95001 Inspection Preparation and lack of documentation in Completion Notes for personnel to provide for sustainability of HELB Program PROD00022459 Undated memo re: CC HELB Pre-95001 Inspection Preparation Assessment PROD00022460 Undated memo re: CC HELB Pre-95001 Inspection Preparation and discrepancies in Corrective Actions identified in the review PROD00022461 Undated memo re: CC HELB Pre-95001 Inspection Preparation and proper documentation in Completion Notes of CA-01145695 activities PROD00022462 Undated memo re: CC HELB Pre-95001 Inspection Preparation and insufficient HELB Design Basis documentation PROD00022463 Undated memo re: CC HELB 95001 Inspection Preparation and proper tracking of Engineering line budget items PROD00022464 Undated memo re: CC HELB 95001 Inspection Preparation and proper tracking of Engineering line budget items PROD00022465 Undated memo re: CC HELB Pre-95001 Inspection Assessment PROD00022466 Undated memo re: CC HELB Pre-95001 Inspection Assessment Exit Meeting PROD00022467 Undated memo CC HELB Pre-95001 Inspection Preparation, list of Issues topics PROD00022468 Undated memo re: CC HELB Pre-95001 Inspection Preparation and Review of Root Cause Evaluation report (CAP-01145695)

PROD00022469 Undated spreadsheet indicating status of items identified in Pre 95001 preparation PROD00022470 9/4/2009 Post Inspection Critique Turbine Driven Auxiliary Feedwater Pump PROD00022471 6/11/2010 Email from William Kappes to Darin Rippentrop re: comments on CC HELB OR review PROD00022472 6/10/2010 Action Items from CC HELB Challenge Board PROD00022473 Undated PowerPoint re: Component Cooling Water System High Energy Line Break 95-001 Inspection June 14-18, 2010 PROD00022474 Undated PowerPoint re: Component Cooling Water System High Energy Line Break 95-001 Inspection June 14-18, 2010 PROD00022475 3/26/2010 Email from William Kappes to Darin Rippentorp re: performing a Readiness Assessment relating to CC/HELB 85

Document Number Description PROD00022476 6/02/2010 Email form Darin Rippentorp to Thomas Roddey re: wrong document uploaded as The resource plan for CC HELB PROD00022477 6/17/2010 Email form Joe Muth to DL-PI-QA-QC re: daily progress list of CC-HELB Inspection PROD00022478 Undated Design Description Form re: capping CC piping system in Cold Chemistry Lab PROD00022479 6/9/2010 Email from Thomas Roddey to Michael Vestal re: correcting in -progress notes for cutting an capping CC to Cold Chemistry Lab PROD00022480 Undated Memo: Exit Meeting Pre-95001 Inspection Assessment-CC HELB PROD00022481 Undated review of non-fleet programs to develop program basis documents and capture highlights in one location PROD00022482 Undated PowerPoint re: Component Cooling Water System High Energy Line Break 95-001 Inspection June 14-18, 2010 PROD00022483 6/10/2010 Email from Kevin to Sam DiPasquale and others re: CC-HELB Challenge Board proper documentation of CAPs PROD00022484 6/04/2010 Email from Thomas Roddey to Darin Rippentorp re: adding information to the business case about flooding and HELB design bases PROD00022485 6/2/2010 Email from Mark Huting to Darin Rippentorp re: proper documentation of CA and CAPs related to CC HELB Assessment PROD00022486 6/2/2010 Email from Mark Huting to Darin Rippentorp re: changes to the CAP about the CC HELB Assessment PROD00022487 6/3/2010 Email from Thomas Roddey to Darin Rippentorp re: changes to the draft CAP concerning the CC HELB Assessment PROD00022488 3/26/2010 Email from Joe Muth to William Kappes and Darin Rippentorp re: performance of the CC/HELB Readiness Assessment PROD00022489 3/27/2010 Email from William Kappes to Joe Muth and Darin Rippentorp re: timing of CC HELB Assessment PROD00022490 3/27/2010 Email from Joe Muth to William Kappes and others re: timing of CC HELB Assessment PROD00022491 6/2/2010 Email from Thomas Roddey to Darin Rippentorp re: documentation of completion notes on CC HELB PROD00022492 6/8/2010 Email from Thomas Roddey to Sam DiPasquale re: responsibility for CA reporting on status of Pre-95001 Inspection Assessment PROD00022493 Allis Chalmers Instruction Book PROD00022494 6/16/2004 PINGP Engineering Manual- Electrical Construction Standards PROD00022495 EQ Splices PROD00022496 600 V Motor Terminations for Okonite Cable Only (page 17)

PROD00022497 3/11/2005 General Electric - Electrical Cable - Approval Sheet PROD00022498 2/11/2005 United Controls Intl' Inc. Tape Splice PROD00022499 3/11/2005 Environmental Qualification Summary Checklist Okonite/ Electrical Cable/ Insulation PROD00022500 3/11/2005 Environmental Qualification Summary Checklist Okonite/ Electrical Cable/ Insulation PROD00022501 1/8/2004 DBD Change Notice regarding turbine building PROD00022502 5/16/2007 DBD Change Notice regarding Cooling Water System with handwritten notes PROD00022503 12/12/2008 B12A Chemical and Volume Control 86

Document Number Description PROD00022504 3/9/2009 Design Information Transmittal regarding past operability evaluation of U2 reactor make up PROD00022505 3/9/2009 Design Information Transmittal regarding past operability evaluation of U2 reactor make up/ Action Request Report PROD00022506 3/9/2009 Design Information Transmittal regarding past operability evaluation of U2 reactor make up PROD00022507 3/9/2009 Design Information Transmittal regarding past operability evaluation of U2 reactor make up PROD00022508 Summary of Unit 2 Reactor makeup pump motor and MCC source breaker PROD00022509 3/18/2009 Design Information Transmittal past operability evaluation of U2 reactor make up PROD00022510 3/13/2009 Design Information Transmittal past operability evaluation of U2 reactor make up PROD00022511 3/23/2009 Design Information Transmittal regarding past operability evaluation of UT reactor make up PROD00022512 3/18/2009 Design Information Transmittal past operability evaluation of U2 reactor make up PROD00022513 3/23/2009 Design Information Transmittal past operability evaluation of U2 reactor make up PROD00022514 3/18/2009 Design Information Transmittal past operability evaluation of U2 reactor make up PROD00022515 3/24/2009 Design Information Transmittal past operability evaluation of U2 reactor make up PROD00022516 3/25/2009 Design Information Transmittal past operability evaluation of U2 reactor make up PROD00022517 3/25/2009 Design Information Transmittal past operability evaluation of U2 reactor make up PROD00022518 3/30/2009 Design Information Transmittal past operability evaluation of U2 reactor make up PROD00022519 Notes from S. Roberto regarding details associated with power cables and motor terminations associated with Unit 2 Reactor Makeup PROD00022520 S. Roberto notes regarding details associated with power cables and motor terminations and Unit 2 reactor makeup PROD00022521 S. Roberto notes regarding details associated with power cables and motor terminations and Unit 2 reactor makeup PROD00022522 Blueprint/ Diagram with undecipherable legend PROD00022523 3/30/2009 Design Information Transmittal past operability evaluation of U2 reactor makeup PROD00022524 3/12/2009 Prairie Island Turbine Building 695 Elevation HELB Temperature Relative Humidity Sensitivity Study PROD00022525 3/31/2009 letter from K. Iepson to S. Roberto regarding Iepson Consulting Enterprises Assessment for reactor make-up pump motors and electrical power supply components PROD00022526 3/6/2009 letter from K. Jepson to S. Roberto regarding Iepson Consulting Enterprises technical support for development of a past-operability analysis for the prairie island nuclear generating plant PROD00022527 3/6/2009 letter from to S. Roberto regarding Iepson Consulting Enterprises technical support for development of a past-operability analysis for the prairie island nuclear generating plant PROD00022528 3/30/2009 Design Review Comment Form titled IEPSON document function assessment for the reactor makeup pumps PROD00022529 3/30/2009 Design Review Comment Form titled IEPSON document function assessment for the reactor makeup pumps PROD00022530 3/20/2009 letter from K. Iepson to S. Roberto regarding Iepson consulting enterprises and function assessment for reactor make up pump motors PROD00022531 3/25/2009 letter from K. Iepson to S. Roberto regarding consulting and functional assessment for the reactor make-up pump motors and the associated electrical power supply components; technical assessment regarding the same PROD00022532 Technical Report Functional Assessment For the Reactor Make-up Pumps, motors, and the Associated Electrical Power Supply Components 87

Document Number Description PROD00022533 3/30/3009 Technical Report Function Assessment for the Reactor Make-up pumps, motors, and the associated electrical power supply components PROD00022534 10/18/1989 Data File Revision Control Form PROD00022535 7/31/2003 Engineering Evaluation / Critical Design Characteristics Evaluation PROD00022536 4/22/1999 MCC Test Form PROD00022537 3/16/1994 MCC Test Form PROD00022538 Maintenance history for breakers and motors PROD00022539 3/11/2009 memorandum from D. Malek to S. Northard regarding status of turbine building HELB/ CC piping significant determination process to Station Management PROD00022540 3/11/2009 memorandum from D. Malek to S. Northard regarding status of turbine building HELB/ CC piping significant determination process to Station Management PROD00022541 Chart regarding MCC offsite environmental testing PROD00022542 CC HELB affect on opposite unit RMUP breakers by R. Whitlock PROD00022543 CC HELB affect on opposite unit RMUP breakers preliminary evaluation PROD00022544 CC HELB affect on opposite unit RMUP preliminary evaluation PROD00022545 CC HELB affect on opposite unit RMUP preliminary evaluation PROD00022546 CC HELB affect on opposite unit RMUP by R. Whitlock PROD00022547 CC HELB affect on opposite unit RMUP by R. Whitlock PROD00022548 Photo Related to CC/HELB White Finding PROD00022549 Photo Related to CC/HELB White Finding PROD00022550 Photo Related to CC/HELB White Finding PROD00022551 Photo Related to CC/HELB White Finding PROD00022552 Photo Related to CC/HELB White Finding PROD00022553 Photo Related to CC/HELB White Finding PROD00022554 Photo Related to CC/HELB White Finding PROD00022555 Photo Related to CC/HELB White Finding PROD00022556 Photo Related to CC/HELB White Finding PROD00022557 Photo Related to CC/HELB White Finding PROD00022558 Photo Related to CC/HELB White Finding PROD00022559 Photo Related to CC/HELB White Finding PROD00022560 Photo Related to CC/HELB White Finding PROD00022561 Photo Related to CC/HELB White Finding PROD00022562 Photo Related to CC/HELB White Finding PROD00022563 Photo Related to CC/HELB White Finding PROD00022564 Photo Related to CC/HELB White Finding PROD00022565 Photo Related to CC/HELB White Finding PROD00022566 Photo Related to CC/HELB White Finding 88

Document Number Description PROD00022567 Photo Related to CC/HELB White Finding PROD00022568 Photo Related to CC/HELB White Finding PROD00022569 Photo Related to CC/HELB White Finding PROD00022570 Photo Related to CC/HELB White Finding PROD00022571 Photo Related to CC/HELB White Finding PROD00022572 Photo Related to CC/HELB White Finding PROD00022573 Photo Related to CC/HELB White Finding PROD00022574 Photo Related to CC/HELB White Finding PROD00022575 Photo Related to CC/HELB White Finding PROD00022576 Photo Related to CC/HELB White Finding PROD00022577 Photo Related to CC/HELB White Finding PROD00022578 Photo Related to CC/HELB White Finding PROD00022579 Photo Related to CC/HELB White Finding PROD00022580 Photo Related to CC/HELB White Finding PROD00022581 Photo Related to CC/HELB White Finding PROD00022582 Photo Related to CC/HELB White Finding PROD00022583 Photo Related to CC/HELB White Finding PROD00022584 Photo Related to CC/HELB White Finding PROD00022585 Photo Related to CC/HELB White Finding PROD00022586 Photo Related to CC/HELB White Finding PROD00022587 Photo Related to CC/HELB White Finding PROD00022588 Photo Related to CC/HELB White Finding PROD00022589 Photo Related to CC/HELB White Finding PROD00022590 Photo Related to CC/HELB White Finding PROD00022591 Photo Related to CC/HELB White Finding PROD00022592 Photo Related to CC/HELB White Finding PROD00022593 Photo Related to CC/HELB White Finding PROD00022594 Photo Related to CC/HELB White Finding PROD00022595 Photo Related to CC/HELB White Finding PROD00022596 Photo Related to CC/HELB White Finding PROD00022597 Photo Related to CC/HELB White Finding PROD00022598 Photo Related to CC/HELB White Finding PROD00022599 Photo Related to CC/HELB White Finding PROD00022600 Photo Related to CC/HELB White Finding PROD00022601 Evaluation of Reactor Makeup Pump PROD00022602 Blueprint/ Diagram: Power Supply PROD00022603 Motor Control Center diagram 89

Document Number Description PROD00022604 Circuit Diagram Motor Control Center PROD00022605 Motor Control Center Diagram PROD00022606 Wiring Diagram- Motor Control Center PROD00022607 External Connections- Motor Control Center 2D PROD00022608 Turbine Building Elevation 695-0 Diagram PROD00022609 10/31/2000 Station Auxiliary Switchgear PROD00022610 Prairie Island Technical Manual Control System- Reactor Makeup Pump PROD00022611 4/19/1996 Motor Control Centers: Unit images PROD00022612 3/18/2009 PINGP Work Plan - Measure the Unit 2 RMU Flows to CC Surge Tank and VCT PROD00022613 EC13857 - Evaluation of whether Unit 2 RMU Pumps will continue to operate in the temperature conditions caused by CC loss due to HELB PROD00022614 CC HELB Effect in Opposite Unit RMUP Overloads PROD00022615 1/30/2009 Email from R. Whitlock to S. Skoyen re Assistance with CC HELB (motor issue)

PROD00022616 EC13857 - Evaluation of whether Unit 2 RMU Pumps will continue to operate in the temperature conditions caused by CC loss due to HELB PROD00022617 EC13857 - Evaluation of whether Unit 2 RMU Pumps will continue to operate in the temperature conditions caused by CC loss due to HELB PROD00022618 3/2/2009 Email from R. Whitlock to S. McCall et al. re EC13857 - Evaluation of whether Unit 2 RMU Pumps will continue to operate in the temperature conditions caused by CC loss due to HELB PROD00022619 3/31/2009 Technical Report - Functional Assessment for the Reactor Make-Up Pumps, Motors, and the Associated Electrical Power Supply Components PROD00022620 3/3/2009 Email from R. Whitlock to S. Robert re RMU System Equipment Qualification Summary Info PROD00022621 2/2009 Prairie Island Turbine Building 695' Elevation HELB Temperature Sensitivity Study PROD00022622 2/2009 Prairie Island Turbine Building 695' Elevation HELB Temperature Sensitivity Study, Attachment A PROD00022623 Data Sheet for WR 43211 PROD00022624 3/18/2009 Email from S. Roberto to D. Butwin with others cc'd re EX 13962 PROD00022625 3/4/2009 Email from R. Whitlock to S. Roberto re Evaluation of EC13857 PROD00022626 4/2/2009 50.59 Screening: Measure Unit 2 RMU Flows to CC Surge Tank and VCT for PRA PROD00022627 3/2/2009 Email from J. Ritter to R. Mella & R. Whitlock with M. Brossart cc'd re RMU System Equipment Qualification Summary Info PROD00022628 Completion Comments for Minor WR 00043194 PROD00022629 chart listing missed opportunities to identify the significance of the HELB issue PROD00022630 change analysis chart of potential HELB interactions between 2005 and 2008 PROD00022631 corrective action matrix for HELB recovery plan PROD00022632 memo re: Mark Reddman's comments abbot Cc and HELB safety issues PROD00022633 7/29/2008 RCE Report re: component cooling piping adjacent to HELB location in turbine building PROD00022634 7/29/2008 RCE Report re: component cooling piping adjacent to HELB location in turbine building 90

Document Number Description PROD00022635 7/29/2008 RCE Report re: component cooling piping adjacent to HELB location in turbine building PROD00022636 7/29/2008 RCE Report re: component cooling piping adjacent to HELB location in turbine building PROD00022637 7/29/2008 RCE Report re: component cooling piping adjacent to HELB location in turbine building PROD00022638 7/29/2008 RCE Report re: component cooling piping adjacent to HELB location in turbine building PROD00022639 7/29/2008 RCE Report re: component cooling piping adjacent to HELB location in turbine building PROD00022640 7/29/2008 RCE Report re: component cooling piping adjacent to HELB location in turbine building PROD00022641 7/29/2008 RCE Report re: component cooling piping adjacent to HELB location in turbine building PROD00022642 7/29/2008 RCE Report re: component cooling piping adjacent to HELB location in turbine building PROD00022643 10/30/2008 PING RCE Report re: radioactive shipment exceeding DOT limits PROD00022644 10/30/2008 PING RCE Report re: radioactive shipment exceeding DOT limits PROD00022645 10/30/2008 PING RCE Report re: radioactive shipment exceeding DOT limits PROD00022646 10/30/2008 PING RCE Report re: radioactive shipment exceeding DOT limits PROD00022647 10/30/2008 PING RCE Report re: radioactive shipment exceeding DOT limits PROD00022648 6/10/2010 email from Jon Anderson to Sam DiPasqualea and others re: root cause for HELB issues and inadequate management of the turbine building PROD00022649 2/14/2010 RCE Report Evaluation re: the component cooling system next to the HELB location in the turbine building PROD00022650 7/29/2008 PINGP RCE Report re: component cooling piping adjacent to HELB location PROD00022651 2/22/2010 email from Scott Northard to Jeff Connors and others re: development of a process to identify ongoing safety issues PROD00022652 Corrective action matrix re: HELB recovery plan and resource needs PROD00022653 7/29/2008 PING RCE Report re: component cooling pipe adjacent to HELB location in turbine building PROD00022654 7/29/2008 PING RCE Report re: component cooling pipe adjacent to HELB location in turbine building PROD00022655 7/29/2008 PING RCE Report re: component cooling pipe adjacent to HELB location in turbine building PROD00022656 2/23/2010 email from Scott Northard to David Kettering re: concerns over CC/HELB and the corrective action procedures PROD00022657 1/2/2009 memo from Michael Lantz re: shipping container with possible dangerous dosage readings PROD00022658 undated memo re: shipping container with possible dangerous dosage readings PROD00022659 2/25/2009 email from Robert Hite to Pete Wildenborg re: contaminated shipments and particle considerations PROD00022660 undated position paper re: the 'actual' exposure rate of a shipment from PING to Waltz Mill on 10/29/2008 PROD00022661 undated report re: PINGP's response to questions about the 2009 radioactive materials shipment PROD00022662 2/27/2009 email from Scott Nelson to Peter Wildenborg and others re: the procedures for shipping radioactive material PROD00022663 Analysis of shipment of radioactive materials events PROD00022664 Narrative of radioactive material shipment incident PROD00022665 Narrative of radioactive material shipment incident PROD00022666 Narrative of radioactive material shipment incident PROD00022667 Reports to External Agencies & the NMC Sites PROD00022668 Operating experience program guidance 91

Document Number Description PROD00022669 Radioactive Material Shipment Exceeds DOT Limits (Prairie Island)

PROD00022670 Nuclear Network keyword search results for Radioactive Material Shipment PROD00022671 Operating experience event descriptions PROD00022672 Operating experience event descriptions PROD00022673 Operating experience event descriptions PROD00022674 Analysis of internal and external radiological shipping deficiencies PROD00022675 Analysis of internal and external radiological shipping deficiencies PROD00022676 Description of radiological shipping deficiencies PROD00022677 Administrative Work Instruction: Work Activity Risk Management PROD00022678 Administrative Work Instruction: Work Activity Risk Management PROD00022679 Administrative Work Instruction: Work Activity Risk Management PROD00022680 Administrative Work Instruction: Work Activity Risk Management PROD00022681 Initial Radiological Safety Risk Characterization PROD00022682 Initial Radiological Safety Risk Characterization PROD00022683 Initial Radiological Safety Risk Characterization PROD00022684 Radiation Protection Procedures: Radioactive Materials Shipment-LSA/SCO/LTD Qty in Exclusive Use Vehicle - To a Licensed Processing Facility PROD00022685 Radiation Protection Procedure: Radioactive Materials Shipment - Certified Containerized Waste to Envirocare of Utah PROD00022686 Radiation Protection Procedure: Radioactive Materials Shipment-LLRW to Build Waste Disposal Facility of Envirocare of Utah PROD00022687 Radiation Protection Procedure: Radioactive Materials Shipment-N.O.S.-Other than irradiated Fuel-Not Exceeding HRCQ PROD00022688 Radiation Protection Procedure: Radioactive Materials Shipment-LSA/SCO/LTD Qty to a Licensed Facility PROD00022689 Radiation Protection Procedure: Radioactive Materials Shipment-LSA/SCO/LTD Qty to a Licensed Facility PROD00022690 Radiation Protection Procedures: Mixed Low-Level Radioactive and Hazardous Waste (Mixed LLW) Shipment PROD00022691 Radiation Protection Procedures: Radioactive Materials Shipment-LSA/SCO/LTD Qty in Exclusive Use Vehicle-To A Licensed Processing Facility PROD00022692 Radiation Protection Procedure: Radioactive Materials Shipment-Old Steam Generator Upper and Lower Assemblies PROD00022693 Radiation Protection Procedure: Radioactive Materials Shipment-Certified Containerized Waste to Energy Solutions of Utah PROD00022694 Radiation Protection Procedure: Radioactive Materials Shipment-Certified Containerized Waste to Envirocare of Utah PROD00022695 Radiation Protection Procedure: Radioactive Material Shipment-LLRW to Bulk Waste Disposal Facility of Envirocare of Utah PROD00022696 Radiation Protection Procedures: Radioactive Materials Shipment Greater Than Type A Quantities in Exclusive Use Vehicle to Barnwell, CS Using Chem-Nuclear Cask and Hic Liner PROD00022697 Radiation Protection Procedures: Radioactive Materials Shipment Greater Than Type A Quantities in Exclusive Use Vehicle to Barnwell, CS Using RWE Nukem Cask and Hic Liner 92

Document Number Description PROD00022698 Radiation Protection Procedure: Radioactive Materials Shipment-Other Than Irradiated Fuel-Not Exceeding HRCQ PROD00022699 Radiation Protection Procedure: Radioactive Materials Shipment-N.O.S.-Other Than Irradiated Fuel-Not Exceeding HRCQ PROD00022700 Radiation Protection Procedure: Radioactive Materials Shipment-LSA/SCO/LTD Qty to a Licensed Facility PROD00022701 Radiation Protection Procedure: Radioactive Materials Shipment Irradiated Components-Greater Than Type A-In Exclusive Use Vehicle to Barnwell, SC Using Chem-Nuclear CNS 3-55 Cask & Liner PROD00022702 Radiation Protection Procedure: Radioactive Materials Shipment LSA/SCO-Quantities in Exclusive Use Vehicle to Barnwell, SC PROD00022703 Radiation Protection Procedure: Radioactive Materials Shipment PROD00022704 Pacific Gas and Electric Company Nuclear Power Generation Diablo Canyon Power Plant Radiation Control Procedure PROD00022705 9/18/2008 Radiation Protection Job Planning PROD00022706 10/5/2007 Complex Work Procedure PROD00022707 1/16/2009 Status of Radioactive Materials Shipment Procedure Guidelines PROD00022708 1/22/2009 Status of Radioactive Materials Shipment Procedure Guidelines PROD00022709 1/22/2009 Status of Radioactive Materials Shipment Procedure Guidelines PROD00022710 1/23/2009 Status of Radioactive Materials Shipment Procedure Guidelines PROD00022711 1/26/2009 Status of Radioactive Materials Shipment Procedure Guidelines PROD00022712 1/26/2009 Status of Radioactive Materials Shipment Procedure Guidelines PROD00022713 1/27/2009 Status of Radioactive Materials Shipment Procedure Guidelines PROD00022714 1/27/2009 Status of Radioactive Materials Shipment Procedure Guidelines PROD00022715 1/28/2009 Status of Radioactive Materials Shipment Procedure Guidelines PROD00022716 1/16/2009 Status of Radioactive Materials Shipment Procedure Guidelines PROD00022717 1/14/2009 New Document Request Form for Packaging of Radioactive Material for Shipment PROD00022718 Radiation Protection Implementing Procedure: Hot Particle Program PROD00022719 Radiation Protection Implementing Procedure: Discrete Radioactive Particle Program PROD00022720 Radiation Protection Implementing Procedure: Discrete Particle Program PROD00022721 Radiation Protection Implementing Procedure: Hot Particle Program PROD00022722 Radiation Protection Implementing Procedure: Packaging of Radioactive Material for Shipment PROD00022723 Radiation Protection Implementing Procedure: Packaging of Radioactive Material for Shipment PROD00022724 New procedure to address corrective actions for RCE #01157726 PROD00022725 Radiation Protection Implementing Procedure: Loading LSA Boxes/Sealand Containers PROD00022726 Radiation Protection Implementing Procedure: Discrete Radioactive Particle Program PROD00022727 Radiation Protection Implementing Procedure: Packaging of Radioactive Material for Shipment PROD00022728 Pacific Gas and Electric Company Nuclear Power Generation Diablo Canyon Power Plant Radiation Control Procedure PROD00022729 Radiation Protection Implementing Procedure PROD00022730 Radiation Protection Implementing Procedure PROD00022731 Radiation Protection Implementing Procedure 93

Document Number Description PROD00022732 Photo Related to Transportation White Finding PROD00022733 Photo Related to Transportation White Finding PROD00022734 Photo Related to Transportation White Finding PROD00022735 Photo Related to Transportation White Finding PROD00022736 Photo Related to Transportation White Finding PROD00022737 Photo Related to Transportation White Finding PROD00022738 Photo Related to Transportation White Finding PROD00022739 Photo Related to Transportation White Finding PROD00022740 Photo Related to Transportation White Finding PROD00022741 Photo Related to Transportation White Finding PROD00022742 Photo Related to Transportation White Finding PROD00022743 Photo Related to Transportation White Finding PROD00022744 Photo Related to Transportation White Finding PROD00022745 Photo Related to Transportation White Finding PROD00022746 Photo Related to Transportation White Finding PROD00022747 Photo Related to Transportation White Finding PROD00022748 Photo Related to Transportation White Finding PROD00022749 Photo Related to Transportation White Finding PROD00022750 Photo Related to Transportation White Finding PROD00022751 Photo Related to Transportation White Finding PROD00022752 Photo Related to Transportation White Finding PROD00022753 Photo Related to Transportation White Finding PROD00022754 Photo Related to Transportation White Finding PROD00022755 Photo Related to Transportation White Finding PROD00022756 Photo Related to Transportation White Finding PROD00022757 Photo Related to Transportation White Finding PROD00022758 Photo Related to Transportation White Finding PROD00022759 Photo Related to Transportation White Finding PROD00022760 Photo Related to Transportation White Finding PROD00022761 Photo Related to Transportation White Finding PROD00022762 Photo Related to Transportation White Finding PROD00022763 Photo Related to Transportation White Finding PROD00022764 Photo Related to Transportation White Finding PROD00022765 Photo Related to Transportation White Finding PROD00022766 Photo Related to Transportation White Finding PROD00022767 Photo Related to Transportation White Finding PROD00022768 Photo Related to Transportation White Finding 94

Document Number Description PROD00022769 Photo Related to Transportation White Finding PROD00022770 Photo Related to Transportation White Finding PROD00022771 Image of photo files PROD00022772 Photo Related to Transportation White Finding PROD00022773 Photo Related to Transportation White Finding PROD00022774 Photo Related to Transportation White Finding PROD00022775 Photo Related to Transportation White Finding PROD00022776 Photo Related to Transportation White Finding PROD00022777 Photo Related to Transportation White Finding PROD00022778 Photo Related to Transportation White Finding PROD00022779 Radioactive Materials Shipping Program issue - contributing causes PROD00022780 Cause brainstorming session - radioactive shipment issue PROD00022781 Corrective Actions to Restore and interim Corrective Actions -Radioactive Materials Shipping Program PROD00022782 2/6/2009 Corrective Actions to Prevent Recurrence and Effectiveness Reviews - Radioactive Materials Shipping Program PROD00022783 2/6/2009 Cause to Action Matrix - Radioactive Materials Shipping Program PROD00022784 2/6/2009 Cause to Action Matrix - Radioactive Materials Shipping Program PROD00022785 Corrective Actions to Prevent Recurrence - Radioactive Materials Shipping Program PROD00022786 2/1/2009 Corrective Actions to Prevent Recurrence - Radioactive Materials Shipping Program PROD00022787 2/14/2009 Cause to Action Matrix - Radioactive Materials Shipping Program PROD00022788 2/14/2009 Cause to Action Matrix - Radioactive Materials Shipping Program PROD00022789 2/14/2009 Cause to Action Matrix - Radioactive Materials Shipping Program PROD00022790 2/14/2009 Cause to Action Matrix - Radioactive Materials Shipping Program PROD00022791 Cause to Action Matrix - Radioactive Materials Shipping Program PROD00022792 Root cause evaluation of the Radioactive Materials Shipping Program PROD00022793 Root cause evaluation of the Radioactive Materials Shipping Program PROD00022794 Root cause evaluation of radioactive shipment issue PROD00022795 Root cause evaluation of radioactive shipment issue PROD00022796 Root Cause - Radiation Protection and Chemistry procedures do not describe the methods required to successfully evaluate, package, and ship materials in accordance with 49CFR173 and 10CFR71 PROD00022797 11/11/2008 Internal Operating Experience Report PROD00022798 9/24/2008 Work Order Package: SIP Fuel Assemblies to Support Cask Loading PROD00022799 12/12/2008 Action Request Report PROD00022800 7/10/2001 Kewaunee Assessment Process PROD00022801 Analysis of radiological material shipment incident PROD00022802 11/6/2008 AR Screening Report PROD00022803 7/31/2007 Westinghouse Nuclear Services Environment, Health and Safety Training Course Outline 95

Document Number Description PROD00022804 NRC Cross-Cutting Issue Potential PROD00022805 10/5/1999 Radiation Protection Procedure: Radioactive Materials Shipment - LSA/SCO/LTD Qty to a Licensed Facility, Revision 12 PROD00022806 12/4/2003 Radiation Protection Procedure: Radioactive Materials Shipment - LSA/SCO/LTD Qty to a Licensed Facility, Revision 14 PROD00022807 12/4/2003 Radiation Protection Procedure: Radioactive Materials Shipment - LSA/SCO/LTD Qty to a Licensed Facility, Revision 14 PROD00022808 4/12/2006 Radiation Protection Procedure: Radioactive Materials Shipment - LSA/SCO/LTD Qty to a Licensed Facility, Revision 15 PROD00022809 4/12/2006 Radiation Protection Procedure: Radioactive Materials Shipment - LSA/SCO/LTD Qty to a Licensed Facility, Revision 15 PROD00022810 5/14/2007 Radiation Protection Procedure: Hazardous and Nonhazardous Materials Storage, Disposal and Labeling Requirements, Revision 11 PROD00022811 9/30/2008 Temporary change Request: Regulated Waste Management PROD00022812 Discrete particle characterization spreadsheet PROD00022813 11/14/2008 Email from W. Vogel to S. Nelson & C. Sweet re DRP isotopic analysis, with Radiological Survey Record PROD00022814 10/23/2008 ED dose rates spreadsheet PROD00022815 Position Paper: assessment of the "actual" exposure rate at the location corresponding to the discrete particle on the bottom surface of the shipping container sent on 10/29/2008 PROD00022816 1/2/2009 Effective Dose Equivalent Rate from Surface of the Shipping Container PROD00022817 9/5/2008 Document Traveler: Procedure Use and Adherence PROD00022818 9/18/2008 Temporary Change Request: RP Job Planning PROD00022819 1/14/2009 PINGP Chemistry Department Spectrum Analysis: Cable Speck PROD00022820 12/17/2007 Westinghouse Nuclear Services Environment, Health & Safety: Training Course Outline: Hazmat Transportation Training Courses PROD00022821 Technical Basis for Public Radiation Safety Significance Determination Process PROD00022822 Information and fact sources re radioactive shipments PROD00022823 Site Notice re teleconference btw NRC and PINGP staff re results of review of 10/29/2008 radioactive equipment shipment PROD00022824 Westinghouse, Nuclear Services/Field Services Vacuum Canister Sipping Services brochure PROD00022825 10/17/2006 Letter from J. Portsmouth with EnergySolutions to E. Mazzuillo with the Office of Hazardous Materials Standards, US Department of Transportation and response 1/17/2007 Letter from .. with US Department of Transportation, Pipeline and Hazardous Materials Safety Administration to J. Portsmouth with EnergySolutions re Requirements for transporting Cass 7 (radioactive) material PROD00022826 11/12-14/2008 Observations from Waltz Mill Facility - Second Week PROD00022827 12/31/2008 List of AR Reports initiated from 1/1/2007 to 12/31/2008 PROD00022828 Checklist for Hazardous Material/Hazardous Waste Shipment 96

Document Number Description PROD00022829 Evaluation of Safety Culture Impacts, Revision 0 PROD00022830 Radwaste Personnel Resource Summary PROD00022831 3/29/2006 Radiation Protection Procedure: Mixed Low-Level Radioactive and Hazardous Waste (Mixed LLW)

Shipment, Revision 8 PROD00022832 4/10/2006 Radiation Protection Procedure: Radioactive Materials Shipment - LSA/SCO/LTD Qty in Exclusive Use Vehicle - To a Licensed Processing Facility, Revision 10 PROD00022833 4/12/2006 Radiation Protection Procedure: Radioactive Materials Shipment - Old Steam Generator Upper and Lower Assemblies, Revision 2 PROD00022834 4/12/2006 Radiation Protection Procedure: Radioactive Materials Shipment - Certified Containerized Waste to Envirocare of Utah, Revision 1 PROD00022835 4/12/2006 Radiation Protection Procedure: Radioactive Material Shipment - LLRW To Bulk Waste Disposal Facility of Envirocare of Utah, Revision 1 PROD00022836 3/29/2006 Radiation Protection Procedure: Radioactive Materials Shipment Greater than Type A Quantities in Exclusive Use Vehicle to Barnwell, SC Using Chem-Nuclear Cask and HIC Liner, Revision 23 PROD00022837 3/29/2006 Radiation Protection Procedure: Radioactive Materials Shipment greater than Type A Quantities in Exclusive Use Vehicle to Barnwell, SC Using RWE Nukem Cask and HIC Liner, Revision 23 PROD00022838 3/29/2006 Radiation Protection Procedure: Radioactive Materials Shipment - M.S.S. - Other Than Irradiated Fuel - Not Exceeding HRCQ, Revision 11 PROD00022839 1/12/2006 Radiation Protection Procedure: Radioactive Materials Shipment Irradiated Components - Greater Than Type A - In Exclusive Use Vehicle to Barnwell, SD Using Chem-Nuclear CNS 3-55 Cask & Liner, Revision 13 PROD00022840 3/29/2006 Radiation Protection Procedure: Radioactive Materials Shipment - LSA/SCO - Quantities in Exclusive Use Vehicle to Barnwell, SC, Revision 13 PROD00022841 6/19/2007 Radiation Protection Procedure: Radioactive Material Shipment, Revision 16 PROD00022842 4/15/2008 Radiation Protection Procedure: Process Control Program for Solidification/Dewatering of Radioactive Waste form Liquid Systems, Revision 9 PROD00022843 1/23/2008 Radiation Protection Implementing Procedure: Radiation Protection Program, Revision 11 PROD00022844 5/27/2008 Radiation Protection Implementing Procedure: Hot Particle Program, Revision 13 PROD00022845 2/14/2008 Radiation Protection Implementing Procedure: RWP Coverage, Revision 19 PROD00022846 5/21/2008 Radiation Protection Implementing Procedure: LSA Box / Sealand Container Control, Revision 8 PROD00022847 2/21/2008 Temporary Change Request: Unconditional Release of Materials PROD00022848 2/21/2008 Temporary Change Request, RPIP 1302: Unconditional Release of Materials PROD00022849 2/1/2008 Radiation Protection Implementing Procedure: Conditional Release of Equipment to Outside the Radiological Controlled Area, Revision 9 PROD00022850 6/9/2008 Radiation Protection Implementing Procedure: Rad Waste Drum Control, Revision 11 PROD00022851 6/9/2008 Radiation Protection Implementing Procedure: Drumming of Wet Trash, Revision 7 PROD00022852 5/19/2008 Radiation Protection Implementing Procedure: Rad Waste Classification, Revision 8 PROD00022853 6/12/2008 Radiation Protection Implementing Procedure: Tracking Radwaste Shipments, Revision 6 97

Document Number Description PROD00022854 5/19/2008 Radiation Protection Implementing Procedure: Rad Waste Streams Scaling Factors, Revision 8 PROD00022855 6/13/2008 Radiation Protection Implementing Procedure: Resin Liner/PDV Control, Revision 14 PROD00022856 6/13/2008 Radiation Protection Implementing Procedure: Solid Radioactive Waste Report, Revision 9 PROD00022857 6/9/2008 Radiation Protection Implementing Procedure: Special Drum Control, Revision 13 PROD00022858 5/19/2008 Radiation Protection Implementing Procedure: Dewatering Filter Elements in High Integrity Containers, Revision 5 PROD00022859 6/3/2008 Radiation Protection Implementing Procedure: Loading LSA Boxes/Sealand Containers PROD00022860 Monitoring of RAD Waste in Interim Storage Procedure rev 5 with effective date 6/16/2008 PROD00022861 Radman for Windows to Generate Scaling Factors Procedure rev 5 with effective date 6/6/2008 PROD00022862 Radman for Windows to Classify and Characterize Radioactive Waste Procedure rev 5 with effective date 6/9/2008 PROD00022863 Evaporation of Waste Liquids Procedure rev 2 with effective date 6/9/2008 PROD00022864 Shipping RAM Using Radman/Radshp Software Procedure rev 3 with effective date 6/13/2008 PROD00022865 Definitions of Root Cause, Contributing Cause, Causal Factors and CAPR PROD00022866 1/9/2009 email from E Forrai to M Kent re approval for release of proprietary document and forwarding other requested documents PROD00022867 List of documents relative to shipment of radioactive materials PROD00022868 List of documents relative to shipment of radioactive materials PROD00022869 List of documents relative to shipment of radioactive materials PROD00022870 List of documents relative to shipment of radioactive materials PROD00022871 10/23/2008 Radiation Protection Survey Records with attached diagrams, records and data PROD00022872 References 1-26 PROD00022873 Job Risk Assessment (Does not apply to E Plan)

PROD00022874 Flowchart (not legible)

PROD00022875 Job Risk Assessment (Does not apply to E Plan)

PROD00022876 Risks analyses for Categories 1-5 PROD00022877 Westinghouse Box Data for various Packages PROD00022878 1/14/2009 Photograph of Radioactive material Type A Packaging UN 2915 PROD00022879 1/14/2009 Photograph of Radioactive material Type A Packaging UN 2915 PROD00022880 1/14/2009 Photograph PROD00022881 Evaluation of Surveys of the Prairie Island Shipping Container Serial #17-0072 from Shipment #I-324-2008 PROD00022882 10/26/2008 Radiation Protection Survey Record with attached diagrams and data PROD00022883 10/29/2008 Radiation Protection Survey Record with attached Vehicle Survey Record for Shipment # 08-069 PROD00022884 11/13/2008 Radiological Survey Record No. 2008-754-SC PROD00022885 10/31/2008 Radiological Survey Record No. 2008-704-SC PROD00022886 10/30/2008 Record of Monitoring on Receipt of Radioactive Materials PROD00022887 11/3/2008 Radiation Protection Survey Record PROD00022888 11/4/2008 Radiological Survey Record No. 2008-372-RS 98

Document Number Description PROD00022889 11/14/2008 Radiological Survey Record No. 2008-755-SC PROD00022890 Safety Significance Investigation format PROD00022891 Telepole linearity check for Radwaste shipment investigation PROD00022892 12/31/2008 Information and Fact Sources from Root Cause Evaluation 01157726 PROD00022893 3/16/2007 Westinghouse Nuclear Services Environment, Health and Safety Training Course Outline rev 0 PROD00022894 Challenge Board Discussion PROD00022895 NCR Identified Issue Report re: radioactive material shipment and Human Performance cross-cutting issue.

PROD00022896 NRC Evaluation Checklist (From Inspection Procedure 95001)

PROD00022897 RCE Report Evaluation for 01157726 PROD00022898 RCE Report Evaluation for 01157726 PROD00022899 RCE Report Evaluation for 01157726 PROD00022900 RCE Report Evaluation for 01157726 PROD00022901 RCE Report Evaluation for 01157726 PROD00022902 RCE Report Evaluation for 01157726 PROD00022903 RCE Report Evaluation for 01157726 PROD00022904 12/12/2008 List of fixes for RCE 01157726 PROD00022905 1/16/2009 RCE 01157726 PARB grade 011609 spreadsheet PROD00022906 1/22/2009 RCE 01157726 PARB grade 011909 spreadsheet PROD00022907 1/27/2009 RCE 01157726 PARB grade 012209 spreadsheet PROD00022908 RCE 01157726 Effectiveness Review and attachments PROD00022909 11/24/2008 RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 with handwritten notes PROD00022910 12/17/2008 RCE 1157726 rollup spreadsheet PROD00022911 spreadsheet of various item numbers and descriptions PROD00022912 1/29/2009 RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022913 DRAFT RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022914 DRAFT RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022915 RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022916 RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022917 RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022918 RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022919 DRAFT RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022920 DRAFT RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022921 DRAFT RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022922 RCE Report Template followed by RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022923 RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022924 RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022925 DRAFT RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 99

Document Number Description PROD00022926 DRAFT RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022927 DRAFT RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022928 RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022929 RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022930 RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022931 RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022932 RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022933 RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022934 RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022935 RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022936 RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022937 2/19/2009 RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022938 RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022939 RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022940 RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022941 RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022942 3/3/2009 RCE Report: Radioactive Material Shipment Exceeded DOT Limits RCE 01157726 PROD00022943 Job Risk Assessment (Does not apply to E Plan)

PROD00022944 Job Risk Assessment (Does not apply to E Plan)

PROD00022945 Job Risk Assessment (Does not apply to E Plan)

PROD00022946 Job Risk Assessment (Does not apply to E Plan)

PROD00022947 Job Risk Assessment (Does not apply to E Plan)

PROD00022948 Job Risk Assessment Table (Does not apply to Emergency Plan conditions)

PROD00022949 Job Risk Assessment (Does not apply to E Plan)

PROD00022950 Job Risk Assessment Table (Does not apply to Emergency Plan conditions)

PROD00022951 Attachment 1: RP Risk Matrix (Does not apply to Emergency Plan conditions) and Job Risk Assessment Table Explanation and Examples PROD00022952 Attachment 1: RP Risk Matrix (Does not apply to Emergency Plan conditions) and Job Risk Assessment Table Explanation and Examples PROD00022953 Job Risk Assessment Table (Does not apply to Emergency Plan conditions)

PROD00022954 Attachment 1: RP Risk Matrix (Does not apply to Emergency Plan conditions) and Job Risk Assessment Table Explanation and Examples PROD00022955 Attachment 1: RP Risk Matrix and Job Risk Assessment Table Explanation and Examples PROD00022956 Job Risk Assessment (Does not apply to E Plan)

PROD00022957 Nuclear Safety Significance Report PROD00022958 Safety Significance Report PROD00022959 Nuclear Safety Significance Report 100

Document Number Description PROD00022960 Safety Significance Report PROD00022961 Safety Significance Report PROD00022962 Safety Significance Report PROD00022963 Safety Significance Report PROD00022964 Safety Significance Report PROD00022965 Safety Significance Report PROD00022966 Safety Significance Report PROD00022967 Safety Significance Report PROD00022968 Safety Significance Report PROD00022969 Safety Significance Report PROD00022970 Safety Significance Report PROD00022971 spreadsheet of data PROD00022972 2/16/2009 email from D Warner to T Verbout and others cc R Hite and others re Capital Costs for different CC System projects compared to 2007 study PROD00022973 Actions 28 and 29 Report PROD00022974 Action 10 Report and graph PROD00022975 Action 11 report PROD00022976 Question 12 and 13 Reports with handwritten notes and 1/30/2009 email from D Lapcinski to B Horner re validating of responses to questions PROD00022977 Question 4 and Response Report PROD00022978 Question 17 - Rev 3 and Response Report PROD00022979 1/20/2009 email from M Loosbrock to J Ritter and others re CC HELB Issue and previous use of X-Connect valves PROD00022980 Action 20 Background and Response Report PROD00022981 2/5/2009 Letter from A Washburn (Sulzer Pumps Inc) to S Skoyen (Xcel) re SI Pump - Loss of Cooling Water for Lube System Review PROD00022982 Engineered Safeguards System Unit 1 Procedure rev 22 with handwritten notes PROD00022983 3/9/2009 Record of Telephone Conversation between B Horner and J Grebin re NPSH requirements for Goulds 3196 model Pump PROD00022984 11/5/2008 NRC Question Response Form re information for high energy pipes and CC piping in the Turbine Building PROD00022985 Write-up of information contained within AES turbine building HELB calculations that is relevant to the CC / HELB SDP with handwritten notes PROD00022986 Question 44 Report and Determination of Orifice Flow Rates Table with handwritten notes PROD00022987 2/6/2009 email from J Kempkes to B Horner cc J Ritter and others re Turbine building HELB / CC piping interaction questions with handwritten notes PROD00022988 2/6/2009 email from J Kempkes to J Ritter cc B Horner and T Bacon re Turbine building HELB / CC piping interaction questions 101

Document Number Description PROD00022989 2/10/2009 email from B Horner to J Ritter cc W Hadeka and others re Additional Information for CC/HELB SDP and attached 1/18/2006 PINGP Calculation for Safe Shutdown Equipment for Compliance with 10 CFR 50, Appendix R PROD00022990 1/16/2009 Record of Telephone Conversation between B Horner and E Colvin re RCP seal injection water temperature maximum allowable limit PROD00022991 2/9/2009 email from J Ritter to S Northard and others re Additional Information for CC/HELB SDP PROD00022992 Letdown, Charging, and Seal Water Injection - Unit 2 Procedure rev 17 effective date 10/23/2008 PROD00022993 Malfunction of Automatic Makeup Procedures rev 10 effective date 7/25/2007 PROD00022994 Spreadsheet Unit 1 HELB Piping PROD00022995 Report re: Calculating the draindown time of CC surge tank following a 3/8" CC tubing rupture in gas house PROD00022996 Action 20: Calculation of the draindown time of CC surge tank following pipe break in Turbine Building PROD00022997 Report re: Calculating the draindown time of CC surge tank following a 3/8" CC tubing rupture in gas house PROD00022998 Table summarizing history of "high temperature" RCP seal o-ring use at Prairie Island and attachments PROD00022999 3/5/2009 NRC Question Response Form re operational history of 12-MS-35 PROD00023000 3/5/2009 NRC Question Response Form re operational history of 12-MS-35 PROD00023001 3/9/2009 Record of Telephone Conversation between B Horner and J Grebin re NPSH requirements for Goulds 3196 model Pump PROD00023002 3/31/2009 Record of Telephone Conversation between B Horner and B Lutz re Westinghouse RCP high-temp o-ring ultimate failure pressures PROD00023003 3/5/2009 NRC Question Response Form re response operations would take if fire alarm occurs during HELB event PROD00023004 3/5/2009 NRC Question Response Form re policies/procedures related to operations staffing during plant operation PROD00023005 3/23/2009 NRC Question Response Form re location of 12-MS-35 steam line relative to valves that isolate CC supply to Gas House PROD00023006 4/16/2009 NRC Question Response Form re when high temperature seals were installed in PINGP RCPs PROD00023007 Actions 28 and 29 report and 3/16/2009 email from J Gehlhar to B Horner and others re responses to questions re Actions 28 and 29 PROD00023008 3/31/2009 Record of Telephone Conversation between B Horner and B Lutz re Westinghouse RCP high-temp o-ring ultimate failure pressures PROD00023009 3/8/2009 Memo from D Malek to S Northard re CAP O1145695, CC Piping adjacent to HELB Location in turbine bldg PROD00023010 3/9/2009 Memo from D Malek to S Northard re CAP 01145695, CC Piping adjacent to HELB Location in turbine bldg PROD00023011 3/10/2009 Memo from D Malek to S Northard re CAP 01145695, CC Piping adjacent to HELB Location in turbine bldg PROD00023012 3/11/2009 memo from S. Northard to D. Malek regarding status of HELP / CC piping in turbine building.

PROD00023013 3/12/2009 memo from S. Northard to D. Malek regarding status of HELP / CC piping in turbine building.

PROD00023014 3/13/2009 Memo from D. Malek to S. Northard re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023015 4/2/2009 Memo from D. Malek to S. Northard re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building 102

Document Number Description PROD00023016 3/17/2009 Memo from D. Malek to S. Northard re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023017 3/18/2009 Memo from D. Malek to S. Northard re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023018 3/19/2009 Memo from D. Malek to K. Ryan re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023019 3/20/2009 Memo from D. Malek to S. Northard re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023020 3/23/2009 Memo from D. Malek to S. Northard re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023021 3/24/2009 Memo from D. Malek to S. Northard re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023022 3/25/2009 Memo from D. Malek to S. Northard re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023023 3/26/2009 Memo from D. Malek to S. Northard re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023024 3/27/2009 Memo from D. Malek to S. Northard re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023025 3/30/2009 Memo from D. Malek to K. Ryan re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023026 3/31/2009 Memo from D. Malek to K. Ryan re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023027 4/1/2009 Memo from D. Malek to K. Ryan re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023028 4/2/2009 Memo from D. Malek to K. Ryan re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023029 4/5/2009 Memo from K. Ryan to D. Malek re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023030 4/6/2009 Memo from D. Malek to K. Ryan re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023031 4/7/2009 Memo from D. Malek to K. Ryan re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023032 4/8/2009 Memo from D. Malek to K. Ryan re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023033 4/9/2009 memo from R. Best to K. Ryan regarding status of HELB / CC piping PROD00023034 4/10/2009 memo from R. Best to K. Ryan regarding status of HELB / CC piping PROD00023035 4/13/2009 Memo from R. Best to K. Ryan re CAP01145695, CC Piping adjacent to HELB Location in turbine bldg PROD00023036 4/14/2009 Memo from R. Best to K. Ryan re CAP01145695, CC Piping adjacent to HELB Location in turbine bldg PROD00023037 4/15/2009 Memo from D. Malek to K. Ryan re CAP01145695, CC Piping adjacent to HELB Location in turbine bldg PROD00023038 4/16/2009 Memo from D. Malek to K. Ryan re CAP01145695, CC Piping adjacent to HELB Location in turbine bldg PROD00023039 4/19/2009 Memo from D. Malek to K. Ryan re CAP01145695, CC Piping adjacent to HELB Location in turbine bldg PROD00023040 4/20/2009 Memo from D. Malek to K. Ryan re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023041 4/21/2009 Memo from D. Malek to K. Ryan re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023042 4/22/2009 Memo from D. Malek to K. Ryan re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023043 4/23/2009 Memo from D. Malek to K. Ryan re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023044 4/27/2009 Memo from D. Malek to K. Ryan re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building 103

Document Number Description PROD00023045 4/28/2009 Memo from D. Malek to K. Ryan re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023046 4/29/2009 Memo from D. Malek to K. Ryan re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023047 4/30/2009 Memo from D. Malek to K. Ryan re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023048 4/30/2009 Memo from D. Malek to K. Ryan re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023049 5/1/2009 Memo from D. Malek to K. Ryan re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023050 5/4/2009 Memo from D. Malek to K. Ryan re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023051 5/5/2009 Memo from D. Malek to K. Ryan re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023052 5/6/2009 Memo from D. Malek to K. Ryan re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023053 5/7/2009 Memo from D. Malek to K. Ryan re CAP 1145695, CC Piping Adjacent to HELB Location in Turbine Building PROD00023054 5/8/2009 Memo from D. Malek to K. Ryan re CAP01145695, CC Piping adjacent to HELB Location in turbine bldg PROD00023055 5/12/2009 Memo from D. Malek to K. Ryan re CAP01145695, CC Piping adjacent to HELB Location in turbine bldg PROD00023056 5/13/2009 Memo from D. Malek to K. Ryan re CAP01145695, CC Piping adjacent to HELB Location in turbine bldg PROD00023057 5/14/2009 Memo from D. Malek to K. Ryan re CAP01145695, CC Piping adjacent to HELB Location in turbine bldg PROD00023058 5/15/2009 Memo from D. Malek to K. Ryan re CAP01145695, CC Piping adjacent to HELB Location in turbine bldg PROD00023059 5/18/2009 Memo from D. Malek to K. Ryan re CAP01145695, CC Piping adjacent to HELB Location in turbine bldg PROD00023060 5/19/2009 Memo from D. Malek to K. Ryan re CAP01145695, CC Piping adjacent to HELB Location in turbine bldg PROD00023061 5/20/2009 Memo from D. Malek to K. Ryan re CAP01145695, CC Piping adjacent to HELB location in turbine bldg PROD00023062 5/21/2009 Memo from D. Malek to K. Ryan re CAP01145695, CC Piping adjacent to HELB location in turbine bldg PROD00023063 5/22/2009 Memo from D. Malek to K. Ryan re CAP01145695, CC Piping adjacent to HELB location in turbine bldg PROD00023064 5/27/2009 Memo from D. Malek to K. Ryan re CAP01145695, CC Piping adjacent to HELB location in turbine bldg PROD00023065 5/29/2009 Memo from D. Malek to K. Ryan re CAP01145695, CC Piping adjacent to HELB location in turbine bldg PROD00023066 6/1/2009 Memo from D. Malek to K. Ryan re CAP01145695, CC Piping adjacent to HELB location in turbine bldg PROD00023067 6/3/2009 Memo from D. Malek to K. Ryan re CAP01145695, CC Piping adjacent to HELB location in turbine bldg PROD00023068 6/9/2009 Memo from D. Malek to K. Ryan re CAP01145695, CC Piping adjacent to HELB location in turbine bldg PROD00023069 6/10/2009 Memo from D. Malek to K. Ryan re CAP01145695, CC Piping adjacent to HELB location in turbine bldg PROD00023070 6/12/2009 Memo from D. Malek to K. Ryan re CAP01145695, CC Piping adjacent to HELB location in turbine bldg PROD00023071 6/15/2009 Memo from D. Malek to K. Ryan re CAP01145695, CC Piping adjacent to HELB location in turbine bldg PROD00023072 7/6/2009 Memo from D. Malek to K. Ryan re CAP01145695, CC Piping adjacent to HELB location in turbine bldg PROD00023073 1/12/2009 Memo from B. Horner to S. Northard re CAP01145695, CC Piping adjacent to HELB location in turbine bldg PROD00023074 1/13/2009 Memo from B. Horner to S. Northard re CAP01145695, CC Piping adjacent to HELB location in turbine bldg PROD00023075 1/14/2009 Memo from B. Horner to S. Northard re CAP01145695, CC Piping adjacent to HELB location in turbine bldg PROD00023076 1/15/2009 Memo from B. Horner to S. Northard re CAP01145695, CC Piping adjacent to HELB location in turbine bldg PROD00023077 1/16/2009 Memo from B. Horner to S. Northard re CAP01145695, CC Piping adjacent to HELB location in turbine bldg PROD00023078 1/19/2009 Memo from B. Horner to S. Northard re CAP01145695, CC Piping adjacent to HELB location in turbine bldg PROD00023079 1/20/2009 Memo from B. Horner to S. Northard re CAP01145695, CC Piping adjacent to HELB location in turbine bldg PROD00023080 1/26/2009 Memo from B. Horner to S. Northard re CAP01145695, CC Piping adjacent to HELB location in turbine bldg 104

Document Number Description PROD00023081 1/27/2009 Memo from B. Horner to S. Northard re: CC piping adjacent to HELB location in turbine building and related CAP PROD00023082 1/28/2009 Memo from B. Horner to S. Northard re: CC piping adjacent to HELB location in turbine building and related CAP PROD00023083 1/29/2009 Memo from B. Horner to S. Northard re: CC piping adjacent to HELB location in turbine building and related CAP PROD00023084 1/30/2009 Memo from B. Horner to S. Northard re: CC piping adjacent to HELB location in turbine building and related CAP PROD00023085 1/9/2009 Memo from B. Horner to S. Northard re: CC piping adjacent to HELB location in turbine building and related CAP PROD00023086 2/10/2009 Memo from B. Horner to S. Northard re: CC piping adjacent to HELB location in turbine building and related CAP PROD00023087 2/11/2009 Memo from B. Horner to S. Northard re: CC piping adjacent to HELB location in turbine building and related CAP PROD00023088 2/12/2009 Memo from B. Horner to S. Northard re: CC piping adjacent to HELB location in turbine building and related CAP PROD00023089 2/13/2009 Memo from B. Horner to S. Northard re: CC piping adjacent to HELB location in turbine building and related CAP PROD00023090 2/16/2009 Memo from B. Horner to S. Northard regarding status of HELB / CC piping PROD00023091 2/17/2009 Memo from B. Horner to S. Northard regarding status of HELB / CC piping PROD00023092 2/18/2009 Memo from B. Horner to S. Northard regarding status of HELB / CC piping PROD00023093 2/19/2009 Memo from B. Horner to S. Northard regarding status of HELB / CC piping PROD00023094 2/20/2009 Memo from B. Horner to S. Northard regarding status of HELB / CC piping PROD00023095 2/2/2009 Memo from B. Horner to S. Northard regarding status of HELB / CC piping PROD00023096 2/23/2009 Memo from B. Horner to S. Northard regarding status of HELB / CC piping PROD00023097 2/24/2009 Memo from B. Horner to S. Northard regarding status of HELB / CC piping PROD00023098 2/25/2009 memo from B. Horner to S. Northard regarding HELB / CC piping status PROD00023099 2/26/2009 Memo from B. Horner to S. Northard re: CC piping adjacent to HELB location in turbine building and related CAP PROD00023100 2/27/2009 Memo from B. Horner to S. Northard re: CC piping adjacent to HELB location in turbine building and related CAP PROD00023101 2/3/2009 Memo from B. Horner to S. Northard re: CC piping adjacent to HELB location in turbine building and related CAP PROD00023102 2/4/2009 Memo from B. Horner to S. Northard re: CC piping adjacent to HELB location in turbine building and related CAP PROD00023103 2/5/2009 Memo from B. Horner to S. Northard re: CC piping adjacent to HELB location in turbine building and related CAP 105

Document Number Description PROD00023104 2/6/2009 Memo from B. Horner to S. Northard re: CC piping adjacent to HELB location in turbine building and related CAP PROD00023105 2/9/2009 Memo from B. Horner to S. Northard re: CC piping adjacent to HELB location in turbine building and related CAP PROD00023106 3/2/2009 Memo from B. Horner to S. Northard re: CC piping adjacent to HELB location in turbine building and related CAP PROD00023107 3/3/2009 Memo from B. Horner to S. Northard re: CC piping adjacent to HELB location in turbine building and related CAP PROD00023108 3/4/2009 Memo from B. Horner to S. Northard re: CC piping adjacent to HELB location in turbine building and related CAP PROD00023109 3/5/2009 Memo from B. Horner to S. Northard re: CC piping adjacent to HELB location in turbine building and related CAP PROD00023110 3/6/2009 Memo from B. Horner to S. Northard re: CC piping adjacent to HELB location in turbine building and related CAP PROD00023111 6/10/2009 Summary of Discussion with NRC PROD00023112 6/10/2009 NRC Question Response Form re: pipe segment 12-CD-7 and HELB PROD00023113 5/1/2010 Action Request Identification printout re: potential CL system unanalyzed condition during HELB PROD00023114 1/9/2009 Email from J. Ritter to B. Horner re: CC Line/HELB issue PROD00023115 12/1/2008 Report titled Component Cooling Piping Interaction with Turbine Building HELB Piping Significance Determination Process PROD00023116 CC_HELB SDP External Resource Costs spreadsheet PROD00023117 Untitled spreadsheet re: VCT and NPSH PROD00023118 Sargent & Lundy report titled Chemistry Lab Component Cooling Study (7/2009)

PROD00023119 8/5/2009 Modification Classification form for Cold Chemistry Lab Sample Cooling System (EC number 14668)

PROD00023120 Design Input Checklist, Part A, for EC number 14668 PROD00023121 Design Input Checklist, Part B, for EC number 14668 PROD00023122 Design Description Form titled Cold Chemistry Laboratory Sample Cooling System (CLC)

PROD00023123 Cold Chem Lab Sample Cooler Heat Loads / ZW System Capabilities (preliminary evaluation)

PROD00023124 8/25/1985 Work Request re: installation of bypass PROD00023125 10/5/1995 Analysis of Record and Engineering Calculations re: Single Failure Analysis for Component Cooling System PROD00023126 Undated response from K. Den Herder to J. Ritter re: HELB line questions from 11/5/2008 NRC information request PROD00023127 Untitled spreadsheet re: VCT pressure PROD00023128 7/17/2009 NRC Question Response Form re: CC piping break scenario PROD00023129 Operability Recommendation for CAP 01145695 re: CC piping in turbine building (8/2008)

PROD00023130 2/13/2009 Letter from A. Limaye at MPR Associates to B. Horner re: proposal for engineering services of past operability analysis for safety injection pump PROD00023131 50.59 Screening report re: measuring Unit 2 RMU flows to CC surge tank and VCT for PRA (4/2009) 106

Document Number Description PROD00023132 1/12/2009 Email from M. Huting to S. Skoyen, B. Horner, and M. Schimmel re: turbine building HELB/CC SDP update PROD00023133 3/19/2009 Email from A. Limaye at MPR Associates to B. Horner re: request for increased authorization for SI pump analysis PROD00023134 50.59 Screening report re: measure Unit 2 RMU flows to CC surge tank (4/2009)

PROD00023135 Photo Related to Auxiliary Feed Water Pump White Finding PROD00023136 4/14/2009 Turbine Building CC SDP Issue RMU Success Path Continued Viability PROD00023137 50.59 Screening report re: isolation of CC piping in Turbine Building (8/2008)

PROD00023138 50.59 Screening report re: revisions of procedures to support lock valves to assure that CC water is permanently isolated from Turbine Building (11/2009)

PROD00023139 Spreadsheet containing Document IDs and descriptions PROD00023140 3/16/2009 Design Information Transmittal form and attachments re: Safety Injection Pump operation without CC flow to bearing oil cooler PROD00023141 4/17/2009 Design Information Transmittal form and attachments re: Safety Injection Pump operation without CC flow to bearing oil cooler and seals PROD00023142 Report from MPR Associates titled Past Operability Analysis of PINGP Safety Injection Pumps for Loss of Lube Oil and Seal Cooling (4/2009)

PROD00023143 3/26/2009 Lube Oil Heat Rejection Calculation from MPR Associates PROD00023144 4/23/2009 Shaft Seal Heat Generation Calculation from MPR Associates PROD00023145 Draft report from MPR Associates titled Past Operability Analysis for PINGP Safety Injection Pumps for Loss of Lube Oil Cooling (3/2009)

PROD00023146 1/18/2009 Letter from A. Setlur at AES Corp. to B. Slack re: proposal for engineering services related to turbine building PROD00023147 1/9/2009 Email from J. Ritter to B. Horner re: summary of CC/HELB SDP discussion with NRC PROD00023148 ERG Feedback form re: RCP pumps PROD00023149 12/15/2008 Email from B. Horner to J. Ritter and others at Xcel re: potential NRC question on RCP pump PROD00023150 4/1/2009 Team Notes Prairie Island newsletter re: CC system configuration control issue PROD00023151 Spreadsheet report re: VCT after loss of CC PROD00023152 Spreadsheet titled VCT temperature response to loss of CC flow to LTDN HX PROD00023153 3/20/2009 email from C. Koehler to B. Horner re: Potential initiating events of a pipe rupture affecting operability of Component Cooling PROD00023154 3/13/2009 email from R. Best to B. Horner and others at Xcel re: Importance of Component Cooling line to Gas House from a seismic and HELB perspective PROD00023155 1/5/2009 report of Automated Engineering Services - Prairie Island Nuclear Generating Plant assessment Report on Component Cooling Piping in the Turbine Building PROD00023156 3/25/2009 Stevenson & Associates Draft Engineering Walkdown Report PROD00023157 6/10/2009 NRC Question Response Form PROD00023158 summary of 6/10/2009 NRC conference call regarding the Component Cooling and High Energy Line Break SDP 107

Document Number Description PROD00023159 3/1/2009 PINGP Component Cooling Water / Turbine Building Issue Risk Significance - Summary of Xcel Analysis Performed PROD00023160 Response to Question 17 re cross-connecting Unit 1 to Unit 2 component cooling system, Revision 3 PROD00023161 3/19/2009 Email from J. Ritter to B. Horner re RCP seal injection restoration PROD00023162 Comments on MPR report on loss of CC to seals and lube oil cooler on Safety Injection pumps at Prairie Island, MPR-3303, Rev. 0 PROD00023163 3/24/2009 Email from W. Hadeka to A. Limaye & B. Horner with others cc'd re comments on draft report from MPR PROD00023164 3/9/2009 Email from J. Ritter to B. Horner re RMU Pump Flow test to 21 VCT/21 CC Surge Tank PROD00023165 3/16/2009 Email from A. Limaye with MPR to B. Horner re SI pump info PROD00023166 3/5/2009 Email from J. Gehlhar to B. Horner re Simulator Case Study of Loss of CC and Impact on VCT PROD00023167 1/10/2009 Email from R. Best to R. Rohrer & J. Ritter, w/ B. Horner & M. Brossart cc'd re Turbine building HELB /CC SDP update PROD00023168 2/14/2009 Data Request from MPR to PINGP re safety injection pumps PROD00023169 4/16/2009 Email from B. Horner to R. Best re Validated MAAP parameters for MPR analysis input PROD00023170 2/25/2009 Email from J. Ritter to B. Horner re summary of the scenario and various operator actions PROD00023171 Report on Human Failure Errors (HFE)

PROD00023172 5/12/2009 Email from B. Horner to M. Cabiro and many others re Gas house CC tubing rupture calculation PROD00023173 5/9/2009 Email from J. Ritter to B. Horner and others re CC calculations PROD00023174 3/5/2009 Notes on NRC Conference Call - CC-HELB SDP Evaluation PROD00023175 2/3/2009 Email from J. Gehlhar to B. Horner re Loss of CC to Ltdn & SI Wtr Hx, VCT temperature PROD00023176 Chart on Loss of CC to Ltdn & Sl Wtr Hx, VCT PROD00023177 3/3/2009 Email from R. Best to J. Olvera with others cc'd re MAAP runs for SI pump continuous operation on CC/HELB event seal LOCA PROD00023178 2/16/2009 Email from J. Ritter to B. Horner & T. Bacon re Operator review of RMW pump operation and tank swap over PROD00023179 2/16/2009 Email from A. Limaye with MPR to W. Hadeka & B. Horner with others cc'd re PINGP SI pump analysis PROD00023180 12/15/2008 Email from J. Ritter to B. Horner re RCP pump cooling, charging verses CC PROD00023181 1/16/2009 Email from J. Ritter to multiple Xcel employees re PRA Risk Assessment Approach for HELB/CC SDP PROD00023182 1/16/2009 Risk Assessment Approach for HELB Interaction with CC Piping in the Turbine Building SDP PROD00023183 5/16/2009 Email from R. Best to numerous others cc'd re Proposed "position statements" for boundaries on the CC-HELB SDP evaluation PROD00023184 Proposed Xcel Position Statements Relative to the CC-HELB SDP Evaluation PROD00023185 1/2/2009 Email from J. Ritter to B. Horner re RCP Seal Info for NRC RAI Response PROD00023186 Report on Follow-Up Questions Regarding Responses to SAMA RAIs for Prairie Island PROD00023187 4/2/2009 Email from B. Horner to several Xcel employees re Action 49 PROD00023188 3/31/2009 Record of Telephone Conversation: re Westinghouse RCP high-temp o-ring ultimate failure pressures PROD00023189 2/9/2009 Email from D. Warner to numerous Xcel employees re 2009 CC system project discussion PROD00023190 2/12/2009 CC System Projects Discussion: Agenda 108

Document Number Description PROD00023191 2/5/2009 Email from B. Horner to J. Ritter w/ W. Hadeka & K. Johnson cc'd re Actions 10 & 11 PROD00023192 3/15/2009 Email from J. Ritter to R. Best and numerous other Xcel employees re Actions 28 & 29 PROD00023193 3/15/2009 Email from R. Best to B. Horner & D. Malek with others cc'd re Actions 28 & 29 PROD00023194 5/9/2009 Email from B. Horner to J. Ritter & R. Best with others cc'd re calculations on additional inventory and its affect on assumed break pressures PROD00023195 5/9/2009 Email from B. Horner to R. Best w/ S. Skoyen & L. Johnson cc'd re CC calculation variables PROD00023196 5/9/2009 Email from B. Horner to R. Best w/ S. Skoyen & L. Johnson and others cc'd re CC calculation variables PROD00023197 5/9/2009 Email from B. Horner to R. Best w/ S. Skoyen & L. Johnson and others cc'd re CC calculation variables PROD00023198 5/9/2009 Email from B. Horner to R. Best w/ S. Skoyen & L. Johnson and others cc'd re CC calculation variables PROD00023199 1/20/2009 Email from M. Loosbrock to J. Ritter, B. Horner & M. Brossart re CC HELB issues with use of X-Connect valves PROD00023200 3/13/2009 Email from J. Ritter to R. Best & B. Horner with others cc'd re CC line to Gas House PROD00023201 12/9/2008 NRC Question Response Form re seismic analysis of 1-CC-138 up to CC-71-1 and CC-71-2 and CAPS associated therewith PROD00023202 3/18/2009 Email from J. Ritter to B. Horner & W. Scholberg with D. Malek & R. Best cc'd re CC volume PROD00023203 Feedback solicitation for CC-HELB SDP related activities PROD00023204 3/13/2009 Email from R. Best to numerous Xcel employees re Licensing basis requirements for SI/RHR involving CC PROD00023205 Report on Licensing basis statements for SI and RHR requirements of dependency on CC PROD00023206 1/28/2009 Email from B. Horner to B. Slack re Cold chem lab structure's capacity to withstand forces PROD00023207 3/26/2009 Email from J. Ritter to B. Horner & D. Malek with others cc'd re Containment Pressure and Sump B Temperatures from MAAP analysis PROD00023208 PI Loss of CCW Due to HELB - Seal LOCA Plant Response Charts PROD00023209 3/26/2009 Email from J. Ritter to B. Horner, D. Malek, w/ R. Best & L. Johnson cc'd re Containment and RCS Pressure from MAAP results PROD00023210 3/27/2009 Email from J. Ritter to A. Limaye with others cc'd re Containment and RCS pressure PROD00023211 3/26/2009 Email from B. Horner to J. Ritter with others cc'd re Containment & RCS pressure PROD00023212 4/3/2009 Email from B. Horner to R. Best, D. Malek & K. Kriesel with L. Johnson cc'd re walkdown report on CC piping PROD00023213 5/12/2009 Email from R. Best to B. Horner w/ L. Johnson cc'd re Gas house CC tubing rupture calculation PROD00023214 5/6/2009 Email from J. Ritter to B. Horner w/ R. Best, D. Malek & L. Johnson cc'd re HT O-ring questions PROD00023215 3/13/2009 Email from R. Best to D. Malek & B. Horner w/ M. Brossart & L. Johnson cc'd re HT O-rings extrusion test results statistical analysis PROD00023216 2/25/2009 Email from D. Warner to P. Huffman with numerous others cc'd re List of CC issues PROD00023217 6/1/2009 Email from B. Horner to A. Smith, w/ A. Bierbrauer cc'd re List of CC issues PROD00023218 1/29/2009 Email from B. Horner to J. Ritter re Loss of C, Ltdn & VCT temperatures PROD00023219 Chart and Spreadsheet on VCT temperature response to loss of CC flow to LTDN HX PROD00023220 2/16/2010 Email from Martin Cabiro to Benjamin Horner re: location of signed responses to NRC questions for Auxiliary Feedwater 109

Document Number Description PROD00023221 2/16/2010 Email form Benjamin Horner to Martin Cabiro and others re: archiving NRC questions and responses PROD00023222 4/17/2009 Email from Benjamin Horner to Dave Malek re: old seals and high temp O rings PROD00023223 11/10/2009 Email from Benjamin Horner to Jane Ritter re: Operator Response Time for CC- HELB SDP compared with CC-HELB Scenario with leak in the Auxiliary Building PROD00023224 2/17/2009 Email from Jayne Ritter to John Kempkes and others re: response of RMW pumps/tanks System in CC/HELB SDP situation PROD00023225 2/18/2009 Email from Jayne Ritter to John Kempkes and others re: maximum flow and valve control within RMW pump/system operations in CC/HELB event PROD00023226 12/19/2008 Email from Jayne Ritter to Benjamin Horner re: physical damage to RCP after automatic trip due to over current protective relays PROD00023227 12/19/2008 Email from Jayne Ritter to Benjamin Horner re: Operator training provides for trip of the RCPs upon loss of Component Cooling Water PROD00023228 1/5/2009 Email from Jayne Ritter to Benjamin Horner others re: Operation of RCP on loss of CC but with Charging pumps still available PROD00023229 Undated Westinghouse document re: loss of cooling and seal failure in RCPs PROD00023230 1/5/2008 Email from Randy Best to Jayne Ritter and others re: RCP pump cooling and seal leakage as a result of loss of CC PROD00023231 3/20/2008 Volume Control Tank Simulator Case Study re: loss of Unit 2 Component Cooling System due to High Energy Line Break in Turbine Building PROD00023232 2/10/2009 Email from B. Horner to J. Ritter re historic use of main steam line 12-MS-35 PROD00023233 5/17/2009 Email from R. Best to PINGP engineers re comments to proposed statement to NRC re CC/HELB SDP evaluation PROD00023234 5/6/2009 Email from B. Horner to PINGP engineers re seal on reactor cooling pump and LOCA concerns PROD00023235 6/17/2009 Email from B. Horner to J. Ritter re review of NRC response PROD00023236 6/17/2009 Email from B. Horner to J. Ritter re comments on and status of NRC response PROD00023237 1/11/2009 Email from J. Ritter to B. Horner re model applied for RCP seal analysis PROD00023238 Follow-up questions re Responses to Severe Accident Mitigation Analysis RAIs for Prairie Island PROD00023239 4/28/2009 Email from J. Ritter to W. Hadeka and B. Horner re SI pump operability report PROD00023240 3/30/2009 Email from B. Horner to A. Limaye of MPR re inputs needed for SI pump seal evaluation PROD00023241 5/7/2009 Email from B. Horner to R. Best re vulnerability of 1" CC piping in gas house PROD00023242 5/7/2009 Email from B. Horner to R. Best re vulnerability of 1" CC piping in gas house PROD00023243 3/2/2009 Email from J. Ritter to B. Horner re documentation of HELB/CC questions PROD00023244 2/6/2009 Email from R. Best to PINGP engineers re qualification of turbine buildings CC seismic lines PROD00023245 2/16/2009 Email from A. Limayo of MPR to W. Hadeka re bearings for SI pump operability analysis PROD00023246 3/20/2009 Email from J. Ritter to B. Horner re J. Ritter's comments re temperature findings of SI pump operability analysis PROD00023247 3/16/2009 Email from A. Limaye of MPR to B. Horner re viscosities used in SI pump operability analysis 110

Document Number Description PROD00023248 3/3/2009 Email from J. Gehlher to B. Horner re revised parameters for case study on loss of CC and impact on VCT PROD00023249 Spreadsheet showing data for case study of loss of CC and impact on VCT PROD00023250 3/4/2009 Email from J. Gehlhar to B. Horner re seal injection flow in simulator case study of loss of cc and impact on VCT PROD00023251 3/12/2009 Email from J. Gehlhar to B. Horner re flow variables for simulator case study of loss of CC and Impact on VCT PROD00023252 5/3/2009 Email from J. Ritter to B. Horner re sump temperature limits PROD00023253 5/2/2009 Email from B. Horner to A. Limaye of MPR re report on SI pump operability PROD00023254 5/2/2009 Email from B. Horner to A. Limaye of MPR re report on SI pump operability PROD00023255 2/6/2009 Email from B. Horner to J. Kempkes re charging pump alignment PROD00023256 2/6/2009 Email from B. Horner to J. Kempkes re charging pump alignment PROD00023257 1/26/2009 Email from J. Ritter to PINGP engineers re 1/23/2009 conversation with Laura Kozak PROD00023258 Summary of Conversation with Laura Kozak (1/23/2009) SDP for HELB/CC evaluation PROD00023259 2/4/2009 Email from J. Ritter to M. Wadley re action items 35 and 42 on HELB/CC SDP update PROD00023260 1/14/2009 Email from S. Northard to B. Horner re action item 20 on HELB/CC SDP update PROD00023261 2/20/2009 Email from D. Malek to B. Horner re actions needed for item 30a on HELB/CC evaluation PROD00023262 3/9/2009 Email from W. Hadeka to D. Malek re temperature, o-rings, and component cooling in HELB evaluation PROD00023263 4/13/2009 Email from R. Best to B. Horner and other PINGP engineers re documentation of testing for action item 31a on Turbine Building HELB/CC evaluation PROD00023264 Description and status of Action item 31a for Turbine Building HELB/CC Significance Determination Process PROD00023265 4/17/2009 Email from R. Best to PINGP engineers re incorporating CL-HELB into CC-HELB Significance Determination Process PROD00023266 4/17/2009 Draft Plan to Incorporate CL-HELB into CC-HELB Significance Determination Process Evaluation PROD00023267 2/5/2009 Email from B. Horner to G. Wheelock re coordination of the Turbine Building HELB/CC Significance Determination Process PROD00023268 4/13/2009 Email from B. Horner to D. Smith re special testing procedures PROD00023269 1/26/2009 Email from B. Horner to B. Slack re progress on action items for Turbine Building HELB/CC significant determination process PROD00023270 4/13/2009 Email from B. Horner to W. Sexson re CAP for special testing requirements PROD00023271 4/13/2009 Email from B. Horner to D. Malek and other PINGP engineers re action item 31a on Turbine building HELB/CC significant determination process PROD00023272 4/2/2009 Email from B. Horner to A. Limaye re inputs for SI pump analysis PROD00023273 4/16/2009 Email from B. Horner to R. Best re parameters used to model sump temperature at time of recirculation PROD00023274 2/12/2009 Email from J. Ritter to M. Huting re preliminary information shared with Laura on HELB/CC Significance Determination Process PROD00023275 3/9/2009 Email from J. Ritter to B. Horner and other PINGP engineers re information for testing RMU pump flow PROD00023276 7/13/2009 Email from B. Horner to J. Ritter re feedback to MPR on contribution to HELB/CC analysis 111

Document Number Description PROD00023277 3/19/2009 Email from W. Hadeka to A. Limaye re operator actions to maintain SI pump PROD00023278 Image of SI Pump Lube Oil Reservoir attached to email re operator action to maintain SI pump oil level PROD00023279 3/3/2009 Email from J. Ritter to B. Horner re information to simulate impact on VCT following loss of coolant due to HELB PROD00023280 3/19/2009 Email from R. Best to PINGP engineers re status of evaluation of Turbine Building CC significance determination process PROD00023281 2/5/2009 Email from B. Horner to J. Kempkes re configuration of charging pump alignment and manual swap procedures PROD00023282 4/15/2009 Email from B. Horner to R. Best re HELB/CC interaction documentation for SI pump analysis PROD00023283 4/16/2009 Email from B. Horner to R. Best re status of HELB/CC interactions documentation PROD00023284 4/27/2009 Email from B. Horner to R. Best re action items 38 and 39 PROD00023285 Clay Sweet's 95001 Inspection Readiness Follow-up Assessment PROD00023286 Comments on OE Reviews from the RCE Challenge Board PROD00023287 Search results from 10/14/2008 to 10/14/2009 re rad shipping program PROD00023288 Calculations for total shipment activity distributed among the entire internal volume of the shipping box PROD00023289 Report re categorizing radioactive materials/objects for shipment PROD00023290 Notes and excerpts re NUREG 1608 PROD00023291 Clay Sweet's RAM Shipment 08-069 Information PROD00023292 Procedure Consistency Matrix and procedures for packaging and transport of radioactive particles PROD00023293 Clay Sweet's 95001 Inspection Readiness Follow-up Assessment Comments PROD00023294 3/17/2009 Prairie Island Nuclear Generating Plant NRC Region III Regulatory Conference Radioactive material transportation event PROD00023295 Notes regarding conditions present during transport of radioactively contaminated equipment PROD00023296 12/1/2008 Prairie Island Human Performance Independent Assessment PROD00023297 11/3/2008 Prairie Island 2008 Mid-Cycle Focused Self Assessment PROD00023298 4/16/2009 email from R. Hite to S. Derleth and C. Sweet regarding radioactive shipping and completion of survey PROD00023299 11/12/2008 email from R. Hite to radioactive PRO Chem team regarding required human performance stand-down PROD00023300 11/12/2008 email from R. Hite to radioactive PRO Chem team regarding required human performance stand-down PROD00023301 Talking points regarding lapse in human performance tools and safety PROD00023302 Radioactive Material Shipping Matriz PROD00023303 10/29/2008 Radiation Protection/ Chemistry Res Sheet PROD00023304 4/15/2009 e-mail from R. Hite to S. Derlerth and C. Sweet re: Radioactive Material Shipping Program PROD00023305 January 2009 Independent Assessment of 10CFR61 Compliance and Radioactive Materials Shipping Program prepared by WMG, Inc.

PROD00023306 Rad shipping program incidents summary 10/14/2008 to 10/14/2009 PROD00023307 10/29/2009 Assessment of High Risk Radioactive Shipments PROD00023308 Matrix of Xcel employees radioactive shipping safety training 112

Document Number Description PROD00023309 10/6/2009 e-mail from R. Hite to S. Martin re: 95001 inspection preparation PROD00023310 10/7/2009 Email from S. Derleth to S. Martin & C. Sweet re 95001 Preps evaluation shipping activities for risk PROD00023311 2/16/2009 Email from R. Hite to C. Sweet and others at Xcel re shipping of cable with hot spec PROD00023312 10/16/2009 Email from S. Derleth to D. Raebel and others at Xcel re evaluation of shipping activities to Waltz Mill PROD00023313 11/07/2008 Email from S. Derleth to C. Nash & R. Hite and others re evaluation of fuel sipping equipment shipment PROD00023314 10/6/2009 email from R. Hite to E. Boyer regarding monitoring of OEs/ARs related to radioactive material shipping PROD00023315 2/13/2009 email from S. Derleth to K. Huxford regarding Preliminary NRC Yellow Violation regarding transport of material PROD00023316 4/16/2009 email from R. Hite to S. Derleth, C. Sweet and S. Martin regarding radioactive shipping event PROD00023317 3/5/2007 Plateau online training log PROD00023318 Draft memo re: impact of a HELB in the Turbine Building on the Auxiliary Feedwater Pump room PROD00023319 Memo re: lack of heat-up analysis for the battery room PROD00023320 5/6/2010 Email from C. Koehler to various PINGP employees related to CAPs and Inspection Preparation PROD00023321 3/16/2009 Email from D. Malek to M. Smutny & J. Connors re Isolation of CC Lines during HELB Event PROD00023322 3/19/2009 Email from D. Malek to R. Rohrer & S. Myers re Due Date for Action 25b and Impact on CC/HELB Action List PROD00023323 Estimated Pipe Break Timeline PROD00023324 2/24/2010 - Slideshow - All Hands Meeting - PINGP PROD00023325 8/11/2009 Email from K. Christopher to J. Connors re new CAP related to turbine building HELB analysis PROD00023326 Attachment 4 - Operating Experience Evaluation Guidelines related to CAP procedure PROD00023327 5/25/2010 Email from J. Connors to C. Sprout re EC12428 and CC/HELB Inspections PROD00023328 8/20/2009 Email from J. Connors to D. Kettering re Cause Statements in CAPs PROD00023329 4/18/2010 Email from P. Wildenborg to J. Connors re CAP Document Issues PROD00023330 4/28/2009 Email from S. Thomas of Black & Veach Corp. to J. Connors re CL System Analyses PROD00023331 3/23/2007 Report - Proto Power Corporation Calculation Title Sheet - PINGP - Seismic Event - Failure of a Single Event PROD00023332 8/4/2009 Spreadsheet - 2009 Root Cause Evaluation PROD00023333 8/25/2008 Email from B. Slack to G. Hostetter re CR Leakage Calculations PROD00023334 Actions Required to Swap Unit 2 Inservice Reactor Make-up Tank During a Unit 1 HELB Event PROD00023335 3/17/2009 Email from D. Herling to M. Smutny & J. Connors re Critical RMU CC HELB Actions PROD00023336 Actions Required to Swap Unit 2 Inservice Reactor Make-up Tank During a Unit 1 HELB Event PROD00023337 8/29/2005 Letter from T. Vogel of Automated Engineering Services Corp. to M. Meyer re Proposal: Additional Activities Associated with PINGP HELB Reconstitution Project PROD00023338 9/26/2009 Email from N. Adams to J. Connors & C. Lethgo re HELB Issues and RCE PROD00023339 Flow Chart detailing CC/HELB Issues PROD00023340 5/25/2010 Email from S. Myers to J. Connors re Backlogged ECs and CC/HELB PROD00023341 Flow Chart detailing CC/HELB Issues 113

Document Number Description PROD00023342 Narrative detailing CAP 737382 and the assignments that followed PROD00023343 Revised Narrative detailing CAP 737382 and assignments that followed PROD00023344 Narrative detailing CAP 737382 and assignments that followed PROD00023345 Chart detailing NRC IDs, and their applicability to HELB/CC and other issues PROD00023346 6/2/2010 Email from S. Scott to J. Connors re CAP Procedures PROD00023347 6/1/2010 Email from S. Scott to J. Connors re CC/HELB Assessment Potential Issues PROD00023348 7/17/2009 Common Cause Evaluation Report analyzing ineffective resolution of OE items PROD00023349 9/15/2009 Email from J. Connors to G. Woodhouse re RCE Due Date and CC/HELB PROD00023350 10/29/2009 - EVAL-NMPI09 Advent Engineering Evaluation Report - Turbine Building HELB Temperature Analysis PROD00023351 Draft for HELB CAPs - Potential Concern raised with respect to a HELB in the Turbine Building PROD00023352 Proposal for revised CAPRs and EFR for RCE 685, Flooding PROD00023353 Nuclear Administrative and Technical Manual - Industry Operating Experience Review rev 24 PROD00023354 Operability Recommendation - CAP 01203173 - Impact of HELB PROD00023355 RCE 1145695 Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023356 Root Cause Evaluation Charter related to CAP 1145695 PROD00023357 8/18/2009 - Spreadsheet - 2009 Root Cause Evaluation PROD00023358 9/10/2009 Email from S. Scott to J. Connors re Discussion of RCE 01145695 PROD00023359 RCE PARB Comment and Score Summary related to RCE01145695 PROD00023360 High Energy Line Break Project Schedule PROD00023361 9/22/2009 Email from J. Connors to N. Adams & C. Lethgo re Proposed Language for RCE Charter PROD00023362 10/5/2009 Email from J. Connors to C. Lethgo & N. Adams re Discussion of RCE PROD00023363 2/22/2010 Email from S. Scott to J. Connors re PINGP Managers' Priorities PROD00023364 List of interview Questions for RCE# 1145695 PROD00023365 List of interview Questions for RCE# 1145695 PROD00023366 10/8/2009 Email from B. Slack to J. Connors re HELB Reconstitution and Licensing PROD00023367 5/27/2009 Letter from A. Setlur to B. Slack re Proposal to Develop a Safety Related Document for the PI HELB Licensing and Design Bases PROD00023368 8/3/2009 Email from J. Connors to A. Bierbrauer & A. Smith re Seeking Information related to CC/HELB History PROD00023369 List of interview Questions for RCE# 1145695 PROD00023370 8/11/2009 List of Interview Questions for RCE# 1145695 - Interviewee Rick Zyduck PROD00023371 8/10/2009 Email from J. Connors to D. Kettering re Update on CC/HELB Project PROD00023372 RCE 1145695 Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023373 9/25/2009 RCE 1145695 Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023374 RCE PARB Comment and Score Summary for RCE01145695 PROD00023375 Series of Site Responses to Various RCEs PROD00023376 RCE 1145695 Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023377 RCE 1145695 Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building 114

Document Number Description PROD00023378 RCE 1145695 Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023379 RCE 1145695 Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023380 RCE 1145695 Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023381 RCE 1145695 Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023382 RCE 1145695 Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023383 RCE 1145695 Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023384 RCE 1145695 Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023385 RCE 1145695 Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023386 RCE 1145695 Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023387 9/29/2009 Root Cause Evaluation Charter: CAR AR # 01145695 PROD00023388 RCE Report: PINGP Component Cooling Piping Adjacent to HELB Location in Turbine Building, Event date: 7/28/2008, Revision 2 PROD00023389 RCE PARB Comment and Score Summary: RCE01145695: Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023390 9/8/2009 L. Clewett, RCE Report Evaluation: RCE01145695: Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023391 9/9/2009 R. Madjerich, RCE Report Evaluation: RCE01145695: Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023392 9/9/2009 S. McCall, RCE Report Evaluation: RCE01145695: Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023393 9/9/2009 S. Northard, RCE Report Evaluation: RCE01145695: Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023394 9/9/2009 K. Petersen, RCE Report Evaluation: RCE01145695: Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023395 9/8/2009 B. Rogers, RCE Report Evaluation: RCE01145695: Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023396 9/8/2009 K. Ryan, RCE Report Evaluation: RCE01145695: Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023397 9/7/2009 J. Sternisha, RCE Report Evaluation: RCE01145695: Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023398 10/27/2008 Email from L. Wiles with Numerical to B. Slack with others cc'd re Humidity PROD00023399 5/25/2010 Email from J. Connors to C. Koehler re 95001 inspection Prep Open EC review PROD00023400 3/16/2009 Email from J. Connors to D. Malek & M. Smutny, w/ J. Ritter cc'd re Action 25b - CC/HELB SDP PROD00023401 3/19/2009 Email from J. Connors to D. Malek re Action 25b PROD00023402 Preliminary Information: Operator action in the turbine building PROD00023403 3/17/2009 Email from D. Malek to M. Smutny w/ J. Connors cc'd re Action 51 PROD00023404 12/22/2008 Email from B. Slack to K. Oshaksi & G. Hostetter with others cc'd re HELB calculations 115

Document Number Description PROD00023405 10/27/2009 Email from J. Connors to J. Ritter re Battery rooms - heat up calcs & HELB Environment PROD00023406 10/27/2009 Email from J. Connors to J. Ritter re Battery rooms - heat up calcs & HELB environment PROD00023407 11/6/2009 Email from S. Scott to J. Connors re Calculation errors PROD00023408 11/6/2009 Email from S. Scott to D. Jensen w/ B. Halvorson & J. Connors cc'd re Calculation errors PROD00023409 6/1/2010 Email from J. Connors to S. Scott re assignments associated with CC HELB PROD00023410 6/1/2010 Email from J. Connors to S. Scott re assignments associated with CC HELB PROD00023411 5/3/2010 Email from P. Wildenborg to J. Connors re CAP operability reviews PROD00023412 4/28/2009 Email from J. Connors to S. Thomas re CL System Analyses PROD00023413 10/16/2009 Email from B. Slack to J. Connors & S. Myers re draft CAP for D1, D2 and HELB PROD00023414 5/4/2010 Email from J. Connors to S. Scott re HELB Support PROD00023415 10/8/2009 Email from B. Slack to J. Connors re HELB PROD00023416 10/8/2009 Email from J. Connors to B. Slack re HELB PROD00023417 8/4/2009 Email from A. Smith to J. Connors & A. Bierbrauer re Information for CC/HELB RCE PROD00023418 8/3/2009 Email from J. Connors to S. Leingang re Information on CC HELB issue PROD00023419 Operability Recommendation: information re former site engineer that had additional concerns for the impact of a HELB in the Turbine Building PROD00023420 6/15/2010 Email from J. Ritter to T. Roddey & D. Malek w/ J. Connors cc'd re PRA Model Question PROD00023421 PRA Question on DC Panels in Aux Building PROD00023422 RCE Report: Component Cooling Piping Adjacent to HELB Location in Turbine Building: Event Date: 7/29/2008, Revision 2 PROD00023423 5/3/2010 Email from P. Wildenborg to J. Connors re Question on CC/HELB RCE PROD00023424 10/14/2009 Email from A. Notbohm to J. Connors w/ D. Kettering cc'd re RCE Issues PROD00023425 E&CF and Why Staircase for events leading to CC HELB issues PROD00023426 9/21/2009 Email from A. Notbohm to J. Connors w/ J. Lash & D. Kettering cc'd re Root Cause Evaluation drafting PROD00023427 9/20/2009 Email from A. Notbohm to J. Connors re Root Cause Evaluation drafting PROD00023428 9/1/2009 Email from A. Notbohm to J. Connors re comments on draft of Root Cause Evaluation PROD00023429 10/5/2009 Email from C. Lethgo to J. Connors w/ N. Adams cc'd re Root Cause Evaluation critique PROD00023430 10/5/2009 Email from A. Notbohm to J. Connors w/ D. Kettering cc'd re comments on Root Cause Evaluation PROD00023431 4/23/2008 Email from J. Connors to G. Hostetter with Advent Engineering & B. Slack re TB Heat Loads PROD00023432 4/20/2009 Memo from D. Malek to K. Ryan re CAP01145695, CC Piping adjacent to HELB location in turbine bldg PROD00023433 8/14/2009 Email from K. Peterson to J. Connors & W. Scholberg re USAR Question PROD00023434 7/28/2009 Root Cause Evaluation Charter: PINGP failed to ensure design control to adequately protect Unit 2 Component Cooling Water system piping following a seismic-induced HELB event PROD00023435 9/1/2009 Email from J. Connors to C. Lethgo and others re Root Cause Final Draft comments PROD00023436 8/14/2009 Email from D. Albarado to J. Connors re thoughts on event narrative PROD00023437 Apparent Cause Evaluation re CC not being protected from a design basis tornado generated missile 116

Document Number Description PROD00023438 3/13/2009 Memo from D. Malek to S. Northard re CAP01145695, CC Piping adjacent to HELB location in turbine building PROD00023439 Report on the basis to allow down grade of the ZE system to non-safety related.

PROD00023440 Updated E&CF and Why Staircase PROD00023441 Updated E&CF PROD00023442 2009 Root Cause Evaluation chart showing status of CAPs PROD00023443 2009 Root Cause Evaluation chart showing status of CAPs PROD00023444 Draft memo re: impact of a HELB in the Turbine Building on the operation of D1/D2 Emergency Diesel Generators PROD00023445 Draft of CAP for Battery Room Cooling issue PROD00023446 HELB impact on the Component Cooling (CC) System PROD00023447 New draft CAP for Battery Room Heat-up needed to consider LOOP and HELB conditions and provide a heat-up analysis.

PROD00023448 Operator Action in the Turbine Building - stay times in high temperature and high humidity environment post-HELB PROD00023449 Operability Recommendation - PI for CAP 01088591, OPR -10, Rev 0 re: battery room heat-up analysis concludes equipment in the battery rooms is operable but non-conforming.

PROD00023450 Memo re: application of 10 CFR 50.59 screening to screening of 7 calculations for the development of inputs to the HELB analysis should be rewritten to clarify activity PROD00023451 Chart showing change analysis where potential HELB interactions known in 2005 but no immediate actions were taken were rediscovered in 2008 and appropriate actions were taken.

PROD00023452 Root Cause Evaluations criticizing management level accountability for and effectiveness at identifying and correcting operational issues through established processes and procedures and effective strategic planning.

PROD00023453 Apparent Cause Evaluation re: CAP AR# 01145695 re: Component Cooling lines were identified as being affected by HELB in 7/06 but no CAP was initiated apparently due to high work load without proper prioritization.

PROD00023454 Apparent Cause Evaluation CAP AR# 01162511 re: opportunities to identify HELB and CC system interaction were missed apparently due to procedure use and adherence due to cognitive personnel error.

PROD00023455 NRC Inspection Reports re: Kewaunee finding multiple CCW Pipes in close proximity to high energy feedwater lines; Point Beach finding potential common mode failure of Auxiliary Feedwater pumps; and Palo Verde finding a failure to maintain design control of containment sump recirculation piping PROD00023456 4/24/2000 Letter from J. Grobe of Nuclear Regulatory Commission to R. Powers of American Electric Power Co.

(Donald C. Cook Nuclear Generating Plant) re: NRC Inspection Reports 50-315/2000007(DRS) and 50-316/2000007(DRS) and attachments documenting results of special inspection of DC Cook plant to address actions taken to resolve several Case Specific Checklist items.

PROD00023457 Memo re: evaluation of common causes and operational experience show many instances where issues were identified but resolutions have not been completed.

PROD00023458 Draft memo re: unresolved long term equipment issues PROD00023459 Chart re: unresolved long term equipment issues ranked by priority 117

Document Number Description PROD00023460 Chart showing comments from meeting re: RCE Report: Component Cooling Piping Adjacent to HELB Location in Turbine Building. Event Date 7/29/08, RCE 01145695-16 PROD00023461 RCE Report: Component Cooling Piping Adjacent to HELB Location in Turbine Building. Event Date 7/29/08, RCE 01145695-16 PROD00023462 RCE Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023463 RCE Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023464 RCE Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023465 RCE Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023466 RCE Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023467 RCE Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023468 RCE Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023469 RCE Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023470 RCE Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023471 RCE Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023472 RCE Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023473 RCE Report - Component Cooling Piping Adjacent to HELB Location in Turbine Building PROD00023474 Root Cause Evaluation Charter for RCE 1145695 PROD00023475 Summary of Reasons Why a Second CAP was not written - RCE # 1145695 Interview Questions PROD00023476 8/13/2009 - Completed RCE # 1145695 Interview Questions with Brian Slack PROD00023477 8/6/2009 - Completed RCE # 1145695 Interview Questions with Amjid Qureshi PROD00023478 9/25/2009 - Completed RCE # 1145695 Interview Questions with Don Fricke PROD00023479 8/5/2009 - Completed RCE # 1145695 Interview Questions with Don Anderson PROD00023480 8/5/2009 - Completed RCE # 1145695 Interview Questions with unknown PROD00023481 8/5/2009 - Completed RCE # 1145695 Interview Questions with Gary Wheelcock PROD00023482 8/6/2009 - Completed RCE # 1145695 Interview Questions with Mark Meyer PROD00023483 8/6/2009 - Completed RCE # 1145695 Interview Questions with Mark Davis PROD00023484 8/11/2009 - Completed RCE # 1145695 Interview Questions with Rick Zyduck PROD00023485 8/11/2009 - Completed RCE # 1145695 Interview Questions with Rick Zyduck PROD00023486 8/13/2009 - Completed RCE # 1145695 Interview Questions with Scott Leingang PROD00023487 8/6/2009 - Completed RCE # 1145695 Interview Questions with Sonja Myers PROD00023488 8/5/2009 - Completed RCE # 1145695 Interview Questions with Steve Thomas PROD00023489 List of RCE # 1145695 Interview Questions PROD00023490 List of RCE # 1145695 Interview Questions PROD00023491 List of RCE # 1145695 Interview Questions PROD00023492 List of RCE # 1145695 Interview Questions PROD00023493 List of RCE # 1145695 Interview Questions PROD00023494 List of RCE # 1145695 Interview Questions 118

Document Number Description PROD00023495 Request for Clarification re RCE # 1145695 Interview Questions with Marc Meyer PROD00023496 List of RCE # 1145695 Interview Questions PROD00023497 Request for Clarification re RCE # 1145695 Interview Questions with Mark Davis PROD00023498 List of RCE # 1145695 Interview Questions PROD00023499 8/6/2009 - Completed RCE # 1145695 Interview Questions with Scott Leingang PROD00023500 8/7/2009 - Completed RCE # 1145695 Interview Questions with Sonja Myers PROD00023501 List of Interview Questions for RCE# 1145695 PROD00023502 Interview Schedule PROD00023503 Spreadsheet related to CC/HELB Issue History and Action PROD00023504 Flow Chart related to CC/HELB Issue History and Action PROD00023505 Event Narrative related to CC/HELB Issue History and Action PROD00023506 Narrative detailing Condition Evaluation of CAP 1132987 PROD00023507 Narrative detailing Extent of Cause regarding CAP PROD00023508 List of Interview Questions for RCE# 1145695 PROD00023509 Narrative detailing previous issues related to flooding and HELB PROD00023510 Narrative discussing reasons for missing deadline promised to AFI EN.2-2 PROD00023511 12/2004 Report - Turbine Building HELB Analysis - Action Plan PROD00023512 Component Cooling Piping Project - Engineering Work Scope PROD00023513 Engineering Assistance Request (EAR) re CC Design and Seismic Events PROD00023514 Report - Component Cooling Water System - Phase 1 Study of Non-safety Related CC Piping PROD00023515 Report - Component Cooling Water System - Phase 1 Study of Non-safety Related CC Piping PROD00023516 Report - Component Cooling Water System - Phase 1 Study of Non-safety Related CC Piping PROD00023517 Report - Component Cooling Water System - Phase 1 Study of Non-safety Related CC Piping PROD00023518 8/1/2005 Engineering Assistance Request (EAR) - Component Cooling Piping to Cold & Hot Chem Labs are not seismically qualified & HELB is a concern PROD00023519 6/18/2001 - Analysis of Record and Engineering Calculations PROD00023520 Event Narrative related to CC/HELB Issue History and Action PROD00023521 8/17/2006 NMC Report - AT-0175 Action Request Record Report with Attachments PROD00023522 3/3/2006 Letter from A. Setlur of Automated Engineering Services to M. Meyer re Proposal to Provide Engineering Services fort he CC Piping Project PROD00023523 3/2/2006 Letter from P. Gazda of Stevenson & Associates to M. Meyer re Request for Proposal, CC Piping Project NMC Letter dated February 8, 2006 from M. Meyer to P. Gazda PROD00023524 RCE Report Template PROD00023525 5/4/2004 Prairie Island Project Review Group (PRG) Meeting Minutes PROD00023526 12/7/2004 Prairie Island Project Review Group (PRG) Meeting Minutes PROD00023527 4/16/2007 Prairie Island Project Review Group (PRG) Meeting Minutes PROD00023528 3/5/2005 Prairie Island project Review Group (PRG) Meeting Minutes 119

Document Number Description PROD00023529 3/19/2007 Prairie Island Screening Committee Meeting Minutes PROD00023530 4/16/2007 Prairie Island Screening Committee Meeting Minutes PROD00023531 4/7/2008 Prairie Island Screening Committee Meeting Minutes PROD00023532 5/5/2008 Prairie Island Screening Committee Meeting Minutes PROD00023533 7/24/2006 Prairie Island Screening Committee Meeting Minutes PROD00023534 7/28/2004 Prairie Island Screening Committee Meeting Minutes PROD00023535 8/30/2005 Prairie Island Screening Committee Meeting Minutes PROD00023536 Status of OBD000109 re: Component Cooling System PROD00023537 Chart re: NRC issue definitions and the applicability and basis of those definitions; Human Performance Failure Modes; Organizational and Management Failure Modes; Process Failure Modes PROD00023538 Chart re: causal factors and action to take PROD00023539 RCE 01145695 Document List PROD00023540 Timeline re: HELB analysis PROD00023541 RCE 01132717 (Site Response to Issues with SI-9-5); RCE 01132098 (Site Response to 11 TC AFWP Turbine Bearing Failure); RCE 01144249 (TSC Ventilation System Not Maintained Functional); RCE 01141755 (Identified NRC Cross-Cutting Issues); RCE 01157726 (Radioactive Material Shipment Exceeded DOT Limits)

PROD00023542 Report re: Nuclear Safety Significance; Data Analysis; Data Analysis Summary; Failure Mode Summary PROD00023543 RCE PARB Comment and Score Summary PROD00023544 Recovery Plan chart with sections for Strategy, Section, Tactical Actions, Owner, Original Due Date, Current Due Date, Status and Notes PROD00023545 Recovery Plan chart with sections for Strategy, Section, Tactical Actions, Owner, Original Due Date, Current Due Date, Status and Notes PROD00023546 Point Beach Recovery PowerPoint PROD00023547 12/11/06 NMC Prairie Island Nuclear Generating Plant Units 1 & 2 Q-List Validation Project PROD00023548 8/21/2002 letter from L. Myers to U.S. NRC re: Confirmatory Action Letter Response - Management and Human Performance Root Cause Analysis Report on Failure to Identify Reactor Pressure Vessel Head Degradation re: Davis-Besse Nuclear Power Station PROD00023549 Experience Review re: Davis-Besse Nuclear Power Station PROD00023550 10/4/1995 Northern States Power Company Prairie Island Nuclear Generating Plant Calculation Cover Sheet re: Single Failure Analysis for the Component Cooling System PROD00023551 11/21/1990 letter from B. Stephens to D. Mendele re: Prairie Island - Nuclear Projects Department FOI No.A0166, "CL System - Single Failure Analysis" 90XCM5-0106 PROD00023552 Configuration Management Follow-On Item (FOI) Assessment re: CL Single Failure Analysis Open Issues PROD00023553 9/22/1994 PINGP Configuration Management Follow-on Item (FOI) Assessment re: CC Single Failure Analysis Open Issues 120

Document Number Description PROD00023554 4/19/2010 Project Review Group (PRG) re: ensuring proposed capital and Operations & Maintenance (O&M) activities are subject to effective business evaluations and management review at key decision points prior to committing significant activity evaluation PROD00023555 6/16/2006 NMC Fleet Procedure Design Inputs PROD00023556 11/3/2006 NMC Fleet Procedure Design Inputs PROD00023557 6/26/2009 Nuclear Department Fleet Procedure Design Inputs PROD00023558 12/11/2002 NMC Corporate Office Quality Procedures PROD00023559 4/14/2009 Nuclear Department Fllet Procedure Development of Conceptual Design Concept Studies PROD00023560 12/19/2002 NMC Corporate Office Quality Procedures Operability Determination PROD00023561 1/9/2006 NMC Fleet Procedure CAP Action Request Process PROD00023562 3/13/2008 NMC Fleet Procedure CAP Action Request Process PROD00023563 10/15/2003 NMC Corporate Office Quality Procedures Action Request Process PROD00023564 9/29/2005 Performance Improvement Action Request Process PROD00023565 7/30/2004 NMC Corporate Office Quality Procedures Operating Experience Program PROD00023566 1/16/2002 letter from T. Kim to M. Nazar re: Prairie Island Nuclear Generating Plant, Units 1 and 2 - Opportunity for Comment on TIA 2001-04, "Design Basis Reliance on Non-Seismic and Non-Safety Related Equipment" (TAC Nos.

MB18555 and MB1856)

PROD00023567 3/8/1998 letter from B. Wetzel to R. Anderson re: Request for Additional Information (RAI) Regarding the Prairie Island Nuclear Generating Plant Units 1 and 2, Verification of Seismic Adequacy of Mechanical and Electrical Equipment in Operating Reactors (TAC Nos. M69474 and M69475)

PROD00023568 4/6/1998 letter from J. Sorenson to U.S. NRC re: PINGP Response to Verbal Request for Additional Information on the Prairie Island Nuclear Generating Plant, Units 1 and 2, Resolution of Unresolved Safety Issue A-46 (TAC Nos. M69474 and M69475)

PROD00023569 5/7/1998 letter from J. Sorenson to U.S. NRC re: PINGP Response to Request for Additional Information on the Prairie Island Nuclear Generating Plant, Units 1 and 2, Resolution of Unresolved Safety Issue A-46 (TAC Nos. M69474 and M69475)

PROD00023570 5/31/1995 letter from M. Wadley to U.S. NRC re: PINGP Follow-up Response to Generic Letter 87-02, Verification of Seismic Adequacy of Mechanical and Electrical Equipment in Operating Reactors Unresolved Issue (USI) A-48 PROD00023571 8/5/1998 letter from B. Wetzel to R. Anderson re: Resolution of Unresolved Safety Issue (USI) A-46 for Prairie Island Nuclear Generating Plant, Units 1 and 2 (TAC Nos. M69474 and M69475)

PROD00023572 9/26/1997 letter from B. Wetzel to R. Anderson re: Request for Additional Information on the Prairie Island Nuclear Generating Plant Units 1 and 2, Resolution of Unresolved Safety Issue A-46 (TAC Nos. M69474 and M69475)

PROD00023573 9/21/1992 letter from T. Parker to U.S. NRC re: PINGP Response to Supplement 1 to Generic Letter 87-02 on SOUG Resolution of USI A-46 PROD00023574 10/6/1988 letter from D. Muslof to U.S. NRC re: PINGP Response to Generic SER on SOUG Resolution of Unresolved Safety Issue A-46 121

Document Number Description PROD00023575 11/17/1997 letter from J. Sorenson to U.S. NRC re: PINGP Response to Request for Additional Information on the Prairie Island Nuclear Generating Plant, Units 1 and 2, Resolution of Unresolved Safety Issue A-46 (TAC Nos. M69474 and M69475)

PROD00023576 11/20/1995 letter from M. Wadley to U.S. NRC re: PINGP Response to Generic Letter 87.02 Verification of Seismic Adequacy of Mechanical and Electrical Equipment in Operating Reactors Unresolved Issue (USI) A-48 and attachments PROD00023577 11/30/1992 letter from M. Gamberoni to T. Parker re: Safety Evaluation of Prairie Island Nuclear Generating Plant, Unit Nos. 1 and 2, 120-Day Response to Supplement No. 1 to Generic 87-02 (TAC Nos. M69474 and M69475)

PROD00023578 12/31/2006 letter from M. Wadley to U.S. NRC re: PINGP Followup Response to Generic Letter 87-02, Verification of Seismic Adequacy of Mechanical and Electrical Equipment in Operating Reactors, Unresolved Issue (USI) A-46 PROD00023579 6/19/1987 letter from U.S. NRC to All Operating Licensees, Construction Permit Holders and Applicants for Construction Permits re: Relaxation in Arbitrary Intermediate Pipe Rupture Requirements (Generic Letter 87-11)

PROD00023580 1/28/1992 letter from T. Parker to U.S. NRC re: PINGP Response to NRC Generic Letter 89-13 Service Water System Problems Affecting Safety-Related Equipment PROD00023581 1/29/1990 letter from T. Parker to U.S. NRC re: PINGP Response to Generic Letter 89-13 Service Water System Problems Affecting Safety-Related Equipment PROD00023582 2/28/1992 letter from A. Masciatonio to T. Parker re: NRC Generic Letter (GL) 89-13, "Service Water System Problems Affecting Safety Related Equipment," Dated July 18, 1989 (TAC Nos. M74047 and M74048)

PROD00023583 3/15/1990 letter from D. Dilanni to T. Parker re: NRC Generic Letter (GL) 89-13, "Service Water System Problems Affecting Safety-Related Equipment," Dated July 18, 1989 PROD00023584 6/27/1991 letter from T. Parker to U.S. NRC re: PINGP Response Update to NRC Generic Letter 89-13 Service Water System Problems Affecting Safety-Related Equipment PROD00023585 12/28/1990 letter from T. Parker to U.S. NRC re: PINGP Response Update to NRC Generic Letter 89-13 Service Water System Problems Affecting Safety-Related Equipment PROD00023586 11/27/2000 LER 1-00-03 Flooding from Postulated Failure of Air/Vacuum Valve Has Potential to Disable Both Trains of Essential Service (Cooling) Water PROD00023587 9/29/2008 letter from M. Wadley to U.S. NRC re: PINGP LER 2-08-01, Unanalyzed Condition Due to Both Trains of Component Cooling Being Susceptible to a Postulated High Energy Line Break with attached Licensee Event Report PROD00023588 1/17/2007 letter from R. Anderson to U.S. NRC re: PINGP Determination That Some Component Cooling System Alignments Are Not Within the Intent of Technical Specifications with attached Licensee Event Report PROD00023589 1/17/2007 letter from M. Wadley to U.S. NRC re: PINGP Hydraulic Flow Modeling of the Cooling Water System Has Shown Lower Than Design Flows to Some Components and attached Licensee Event Report PROD00023590 Problem Statement re: Review of non-fleet programs (other than HELB) and initiate corrective actions and schedules and summary of recommended actions PROD00023591 Operability Recommendation Form re: Component Cooling System CAP037747, Non-Seismic Equipment in CC System Pressure Boundary PROD00023592 9/12/2008 Prairie Island Project Review Group (PRG) Meeting Minutes 122

Document Number Description PROD00023593 Root Cause Evaluation Charter re: Problem Statement: The station failed to ensure safety related functions of the component cooling water system were maintained for initiating events (HELB, tornado, seismic) in the Turbine Building PROD00023594 8/3/2009 Chemistry Lab Component Cooling Study Prepared for Nuclear Management Company PINGP PROD00023595 3/28/2008 PINGP Section Work Instruction Development of Engineering Studies PROD00023596 RCE Report Evaluation PROD00023597 12/30/1993 Prairie Island Site Northern States Power Company Administrative Work Instruction re: Operability Determinations; 12/30/1993 document, "Operability Determinations", guidance for SSC's, reactor coolant pressure boundary and reactor PROD00023598 11/15/1999 document, "Operability Determinations" for SSC's, reactor coolant pressure boundary and reactor PROD00023599 01/12/1999 Operating Experience Assessment Program PROD00023600 NMC Engineering Human Performance Training to examine the experiences of NASA and PI to facilitate discussion on the special characteristics of nuclear power.

PROD00023601 Additional internal OE, 3 AR requests PROD00023602 Flowchart documenting history of CC system vulnerabilities, 5/1990 to 8/7/2009 PROD00023603 Attachment 10 Change Analysis re: Potential HELB interactions were known in 2005 but no immediate actions were taken. In 2008 the problem was rediscovered and appropriate actions were taken PROD00023604 Interview List PROD00023605 Corrective Action Matrix re: HELB Recovery Plan PROD00023606 Attachment 5 Supporting Evidence/Reference Documents list of documents PROD00023607 Flow chart re: Verification and Validation of Worker Practices, Supervisory Oversight, and Procedure PROD00023608 Attachment 7 Safety Culture Analysis chart with Definition, Applicability, and Basis categories PROD00023609 Attachment 8 Failure Mode Analysis chart with Failure Mode, Definition, Applicability, and Basis categories Attachment 8 - Failure Mode Analysis PROD00023610 Attachment 9 - Hazard Barrier Analysis PROD00023611 Attachment 9 - Hazard Barrier Analysis PROD00023612 Examples of missed opportunities to identify the significance of the CC/HELB issue found during investigation PROD00023613 Potential HELB interactions known in 2005 and action taken PROD00023614 PARB Comment Resolution RCE 1145638 CC/HELB PROD00023615 Corrective Action Matrix PROD00023616 Corrective Actions and dates due PROD00023617 Flowchart documenting history of CC and HELB problems from 5/1990 through 1/2008 PROD00023618 Flowchart documenting history of CC and HELB problems from 5/1990 through 1/2008 PROD00023619 Xcel power point presentation, "Human Performance for Engineers" First Quarter 2009 P7550L-0822 PROD00023620 Extent of conditions, safety-related functions PROD00023621 01/12/2010 - Follow up questions with Sonja Myers 1/12/10 Followup Questions with Sonja Myers regarding several topics 123

Document Number Description PROD00023622 Cover Page, REC Report, "Component Cooling Piping Adjacent to HELB Location in Turbine Building Event Date 7/29/2008" RCE 01145695-16 CAP AR 01145695 PROD00023623 Mark Reddemann's Comments on CC/HELB RCE PROD00023624 REC Report, "Component Cooling Piping Adjacent to HELB Location in Turbine Building Event Date 7/29/2008" RCE:

01145695 PROD00023625 REC Report, "Component Cooling Piping Adjacent to HELB Location in Turbine Building Event Date 7/29/2008" REC:

01145695 PROD00023626 REC Report, "Component Cooling Piping Adjacent to HELB Location in Turbine Building Event Date 7/29/2008" REC 01145695 PROD00023627 Cover Page, REC Report, "Component Cooling Piping Adjacent to HELB Location in Turbine Building Event Date 7/29/2008" PROD00023628 Cover Page, REC Report, "Component Cooling Piping Adjacent to HELB Location in Turbine Building Event Date 7/29/2008" PROD00023629 1/8/2010 Root Cause Evaluation Charter re: failure to ensure safety related functions of the CC water system were maintained for HELB, tornado, and seismic events in the Turbine Building PROD00023630 Undated Extent of Condition Assessment re: design controls not properly implemented to insure all design requirements have been properly evaluated PROD00023631 12/11/2009 Corrective Action to Prevent Recurrence (CAPRs) re: use FP-PA-ARP-01 and RCE as a case study to reinforce expectations about CAP initiation threshold and evaluation with Engineering Supervisors and Managers PROD00023632 portion of Allis-Chalmers Instruction Book for Air Circuit Breakers PROD00023633 6/16/2004 page of Engineering Manual for typical pigtail splice for power, control and instrumentation cable up to 600V PROD00023634 EQ-Splices (UCI Silicone Tape) Procedure rev 8 with effective date 2/28/2007 PROD00023635 pages 17-18 600 V Motor Terminations for okonite cable only PROD00023636 General Electric Type: Electrical Cable (Vulkene) Model: SI -57275, Type SIS Summary Checklist rev 3 with effective date 6/28/2005 PROD00023637 United Controls Intl' (UCI), Inc. Type: Tape Splice Model: UCI-003XS Summary Checklist rev 1 with effective date 5/15/2005 PROD00023638 Okonite Type: Electrical Cable Model: Okonite/Okolon insulation summary checklist rev 1 with effective date 6/2/2005 PROD00023639 Okonite Type: splicing tapes and cement Model: T-95 and 35 tapes summary checklist rev 6 with effective date 6/2/2005 PROD00023640 DBD Change Notices for Turbine Building PROD00023641 DBD Change Notices for Cooling Water System PROD00023642 12/15/2008 B12A Chemical and Volume Control rev 9 PROD00023643 3/9/2009 Design Information Transmittal for EC 13857 re Past Operability Evaluation of U2 Reactor Make Up (RMU)

PROD00023644 3/9/2009 Design Information Transmittal for EC 13857 re Past Operability Evaluation of U2 Reactor Make Up (RMU)

PROD00023645 3/9/2009 Design Information Transmittal for EC 13857 re Past Operability Evaluation of U2 Reactor Make Up (RMU)

PROD00023646 3/9/2009 Design Information Transmittal for EC 13857 re Past Operability Evaluation of U2 Reactor Make Up (RMU) 124

Document Number Description PROD00023647 Summary of the Unit 2 Reactor Makeup (RMU) pump motor and MCC source breaker PROD00023648 3/18/2009 Design Information Transmittal for EC 13857 re Past Operability Evaluation of U2 Reactor Make Up (RMU)

PROD00023649 3/13/2009 Design Information Transmittal for EC 13857 re Past Operability Evaluation of U2 Reactor Make Up (RMU)

PROD00023650 3/23/2009 Design Information Transmittal for EC 13857 re Past Operability Evaluation of U2 Reactor Make Up (RMU)

PROD00023651 3/18/2009 Design Information Transmittal for EC 13857 re Past Operability Evaluation of U2 Reactor Make Up (RMU)

PROD00023652 3/23/2009 Design Information Transmittal for EC 13857 re Past Operability Evaluation of U2 Reactor Make Up (RMU)

PROD00023653 3/20/2009 Design Information Transmittal for EC 13857 re Past Operability Evaluation of U2 Reactor Make Up (RMU)

PROD00023654 3/24/2009 Design Information Transmittal for EC 13857 re Past Operability Evaluation of U2 Reactor Make Up (RMU)

PROD00023655 3/25/2009 Design Information Transmittal for EC 13857 re Past Operability Evaluation of U2 Reactor Make Up (RMU)

PROD00023656 3/26/2009 Design Information Transmittal for EC 13857 re Past Operability Evaluation of U2 Reactor Make Up (RMU)

PROD00023657 3/30/2009 Design Information Transmittal for EC 13857 re Past Operability Evaluation of U2 Reactor Make Up (RMU)

PROD00023658 List of details re power cables and motor terminations associated with the Unit 2 Reactor Makeup (RMU) pump system PROD00023659 List of details re power cables and motor terminations associated with the Unit 2 Reactor Makeup (RMU) pump system PROD00023660 Summary of the Unit 2 Reactor Makeup (RMU) pump motor and MCC source breaker PROD00023661 Blueprint/diagrams, one of which is Flow Diagram Units 1 and 2 Reactor Made Up & Demineralized Water Systems PROD00023662 3/30/2009 Design Information Transmittal for EC 13857 re Past Operability Evaluation of U2 Reactor Make Up (RMU)

PROD00023663 data: run time 7/9/2005 at 9:12:15 PROD00023664 data: run time 7/9/2005 at 10:34:26 PROD00023665 data: run time 7/9/2005 at 10:55:13 PROD00023666 data: run time 8/11/2005 at 8:13:41 PROD00023667 data: run time 8/11/2005 at 8:51:14 PROD00023668 data: run time 8/11/2005 at 9:09:55 PROD00023669 Control Volumes data PROD00023670 3/12/2009 Prairie Island Turbine Building 695' Elevation HELB Temperature & Relative Humidity Sensitivity Study PROD00023671 8/25/2005 Calculation Package re Turbine Building HELB Pressure Analysis PROD00023672 3/6/2009 Letter from K Iepson (Iepson Consulting Enterprises Inc) to S Roberto (Xcel) re "Technical Support for the Development of a Past-Operability Analysis for the Prairie Island Nuclear Generating Plant" PROD00023673 3/6/2009 Letter from K Iepson (Iepson Consulting Enterprises Inc) to S Roberto (Xcel) re "Technical Support for the Development of a Past-Operability Analysis for the Prairie Island Nuclear Generating Plant" PROD00023674 3/30/2009 Design Review Comment Form re Functional Assessment for the Reactor Makeup Pumps, motors and the associated Electrical Power Supply Components PROD00023675 3/30/2009 Design Review Comment Form re Functional Assessment for the Reactor Makeup Pumps, motors and the associated Electrical Power Supply Components PROD00023676 3/20/2009 Letter from K Iepson (Iepson Consulting Enterprises Inc) to S Roberto (Xcel) re "Functional Assessment For The Reactor Make-Up Pump Motors And The Associated Electrical Power Supply Components" PROD00023677 3/25/2009 Letter from K Iepson (Iepson Consulting Enterprises Inc) to S Roberto (Xcel) re "Functional Assessment For The Reactor Make-Up Pump Motors And The Associated Electrical Power Supply Components" 125

Document Number Description PROD00023678 3/31/2009 Report: Functional Assessment For The Reactor Make-Up Pump Motors And The Associated Electrical Power Supply Components PROD00023679 10/19/1989 Data File Revision Control Form due to motor needing to be replaced as a result of damage PROD00023680 7/30/2003 EEC/Minor Mod. Initiation for 22 Reactor Makeup Pump Motor Replacement PROD00023681 4/22/1999 MCC Test Form for BKR# 253-20 PROD00023682 3/16/1994 Copy of MCC Test Form for #22 Reactor Makeup Water Pump PROD00023683 EC 13857 Maintenance History (21/22 RMU breakers and motors)

PROD00023684 Photo Related to CC/HELB White Finding PROD00023685 Photo Related to CC/HELB White Finding PROD00023686 Photo Related to CC/HELB White Finding PROD00023687 Photo Related to CC/HELB White Finding PROD00023688 Photo Related to CC/HELB White Finding PROD00023689 Photo Related to CC/HELB White Finding PROD00023690 Photo Related to CC/HELB White Finding PROD00023691 Photo Related to CC/HELB White Finding PROD00023692 Photo Related to CC/HELB White Finding PROD00023693 Photo Related to CC/HELB White Finding PROD00023694 Photo Related to CC/HELB White Finding PROD00023695 Photo Related to CC/HELB White Finding PROD00023696 Photo Related to CC/HELB White Finding PROD00023697 Photo Related to CC/HELB White Finding PROD00023698 Photo Related to CC/HELB White Finding PROD00023699 Photo Related to CC/HELB White Finding PROD00023700 Photo Related to CC/HELB White Finding PROD00023701 Photo Related to CC/HELB White Finding PROD00023702 Photo Related to CC/HELB White Finding PROD00023703 Photo Related to CC/HELB White Finding PROD00023704 Photo Related to CC/HELB White Finding PROD00023705 Photo Related to CC/HELB White Finding PROD00023706 Photo Related to CC/HELB White Finding PROD00023707 Photo Related to CC/HELB White Finding PROD00023708 Photo Related to CC/HELB White Finding PROD00023709 Photo Related to CC/HELB White Finding PROD00023710 Photo Related to CC/HELB White Finding PROD00023711 Photo Related to CC/HELB White Finding PROD00023712 Photo Related to CC/HELB White Finding PROD00023713 Photo Related to CC/HELB White Finding 126

Document Number Description PROD00023714 Photo Related to CC/HELB White Finding PROD00023715 Photo Related to CC/HELB White Finding PROD00023716 Photo Related to CC/HELB White Finding PROD00023717 Photo Related to CC/HELB White Finding PROD00023718 Photo Related to CC/HELB White Finding PROD00023719 Photo Related to CC/HELB White Finding PROD00023720 Photo Related to CC/HELB White Finding PROD00023721 Photo Related to CC/HELB White Finding PROD00023722 Photo Related to CC/HELB White Finding PROD00023723 Photo Related to CC/HELB White Finding PROD00023724 Photo Related to CC/HELB White Finding PROD00023725 Photo Related to CC/HELB White Finding PROD00023726 Photo Related to CC/HELB White Finding PROD00023727 Photo Related to CC/HELB White Finding PROD00023728 Photo Related to CC/HELB White Finding PROD00023729 Photo Related to CC/HELB White Finding PROD00023730 Photo Related to CC/HELB White Finding PROD00023731 Photo Related to CC/HELB White Finding PROD00023732 Photo Related to CC/HELB White Finding PROD00023733 Photo Related to CC/HELB White Finding PROD00023734 Photo Related to CC/HELB White Finding PROD00023735 Photo Related to CC/HELB White Finding PROD00023736 Photo Related to CC/HELB White Finding PROD00023737 3/7/2009 Evaluation of the Reactor Makeup Pump PROD00023738 Diagram 21 Turbine Building Sump Pump PROD00023739 Blueprint/Diagram 22 Reactor Water Make-Up Pump PROD00023740 1/7/2002 blueprint/diagram 480V Circuit Diagram Motor Control Center 2D & 2DA PROD00023741 blueprint/diagram wiring diagram Bus 1 Motor Control Center 2D PROD00023742 blueprint/diagram Wiring Diagram Bus-2 Motor Control Center 2D PROD00023743 blueprint/diagram External Connections Motor Control Center 2D PROD00023744 blueprint/diagram Turbine Building Elev. 695'0" Areas 1A, 1B, 1C, 1D1, 1D2, 1E, 1F, 1G, 1H, 1J1, 1J2, 1K, 1L, 1M, 1N, 1P PROD00023745 10/31/2000 Manual XH-1053-119 for 4.16 KV/480OV Station Aux Switchgear rev 7 and attachments PROD00023746 Prairie Island Technical Manual XH-174-2 Reactor Makeup Pump rev 3 (also rev 2) and Goulds Installation, Operation and Maintenance Instructions for model 3196-STD and 3197-STD PROD00023747 4/19/1996 Manual XH-66-64 for 480V Motor Control Centers Rev 9 and attachments PROD00023748 3/16/2009 email from S. Roberto to D. Butwin regarding HELB study at PINGP.

127

Document Number Description PROD00023749 3/23/2009 email from S. Roberto to D. Butwin regarding HELB analysis at PINGP.

PROD00023750 3/12/2009 email from K. Vincent to D. Butwin and R. Wise regarding sprinklers in turbine building.

PROD00023751 3/23/2009 email from K. Vincent to D. Malek and J. Ritter regarding assessment of turbine building at PINGP.

PROD00023752 3/17/2009 email from B. Slack to R. Whitlock and S. Roberto regarding HELB measurements.

PROD00023753 3/13/2009 email from S. Roberto to D. Butwin regarding HELB study at PINGP.

PROD00023754 3/20/2009 email from D. Butwin to S. Roberto regarding functional assessment of turbine building at PINGP.

PROD00023755 Highlights of conference call regarding HELB cases at PINGP.

PROD00023756 Discussion of safety determinations regarding, inter alia, HELB at PINGP.

PROD00023757 3/18/2009 DIT form containing preliminary HELB pressure analysis.

PROD00023758 3/10/2009 email from D. Butwin to K. Vincent regarding CC at PINGP.

PROD00023759 3/16/2009 email from D. Butwin to S. Roberto regarding DIT for HELB study at PINGP.

PROD00023760 Summary of conditions relative to CC surge tanks at PINGP.

PROD00023761 3/10/2009 notes from conference call discussing, inter alia, HELB at PINGP.

PROD00023762 3/23/2009 email from J. Ritter to K. Vincent and S. Roberto regarding pump at PINGP.

PROD00023763 3/30/2009 IEPSON report on functional assessment of components at PINGP.

PROD00023764 3/16/2009 email from D. Butwin to S. Roberto regarding HELB study at PINGP.

PROD00023765 3/1/2009 memo from S. Northard to D. Malek regarding CC piping adjacent to HELB location in turbine building.

PROD00023766 3/12/2009 conference call notes regarding, inter alia, HELP temperature sensitivity study.

PROD00023767 6/18/2010 Email from Thomas Roddey to Dennis Koehl and others re: small high energy line inspected not previously evaluated for HELP impacts PROD00023768 6/21/2010 Draft of Report " Review of Potential HELB Interaction Identified During NRC 95001 Inspection" regarding a small high energy line that had not been previously evaluated PROD00023769 6/18/2010 Email from Sherry Schmidt to DL-PI-AR Screening re: AR screening results and procedure if necessary to re-screen CAPs PROD00023770 6/18/2010 NSPM CAP Screen Team Meeting Template and results of AR screening PROD00023771 6/17/2010 Email from Thomas Roddey to Sam DiPasquale and others re: Daily update of CC-HELB 95001 Inspection and three potential findings PROD00023772 6/21/2010 Email from Sam DiPasquale to di-pi-Regulatory Inspection Daily Briefings and others re: Monday update of the CC-HELB 95001 Inspection PROD00023773 6/16/2010 Email from Jon Anderson to Bradley Sawatzke re: permanent fix to internal flooding issue PROD00023774 6/22/2010 Email from Jennifer Greninger to DL-MT-MEM re: MEM info including among other thing Action Register and daily CAP information PROD00023775 6/16/2010 Email form David Kettering to Corey Hessen and others re: Engineering Issue for 6/16/2010-end of shift status including status of CC HELB Inspection PROD00023776 6/17/2010 Email form David Kettering to Corey Hessen and others re: Engineering Issue for 6/17/2010-end of shift status including status of CC HELB Inspection 128

Document Number Description PROD00023777 6/18/2010 Email form David Kettering to Corey Hessen and others re: Engineering Issue for 6/18/2010-end of shift status including status of CC HELB Inspection PROD00023778 6/21/2010 Email form David Kettering to Corey Hessen and others re: Engineering Issue for 6/21/2010-end of shift status including information about the CC HELB Inspection PROD00023779 6/15/2010 Agenda and Supporting Project Documents for the Project Review Group Meeting PROD00023780 6/9/2010 Nuclear Project Authorization (NPA) form for the HELB Flooding Program Reconstitution Project PROD00023781 6/16/2010 Email from Sam DiPasquale to di-pi Regulatory Inspection Daily Briefings and others re: CC HELB 95001 Inspection daily update PROD00023782 6/21/2010 Email from David Kettering to Corey Hessen and others re: feasibility of ECR 4719 project concerning flooding of Turbine Building PROD00023783 6/16/2010 Email from Jon Anderson to Thomas Roddey and other re: Midday Debrief of 95001 Inspection and issue that may lead to a potential finding PROD00023784 6/17/2010 Email from Thomas Roddey to di-pi-Regulatory Inspection Daily briefings re: Current Status of 95001 Inspection including NRC Interviews continuing, NRC walkdown completed, and Potential Findings PROD00023785 Undated memo evaluating timing of both units staff response to HELP in one unit PROD00023786 3/5/2009 NRC Question Response Form re: use of the De-aerating Steam Line PROD00023787 3/5/2009 NRC Question Response Form re: During HELB may fire protection system be activated and with what result? Language from "Operator response to Fire Protection System Alarms wit a High Energy Line Break" provided.

PROD00023788 3/5/2009 NRC Question Response Form re: policies and procedures related to Operations staffing out-plant operations personnel including shift turnover and special circumstances PROD00023789 3/13/2009 NRC question and response - policies/procedures related to operations staffing during plant operation PROD00023790 3/13/2009 email from M. Smutny to D. Malek, J. Ritter, J. Connors, B. Slack re: operations personnel function during CC/HELB event PROD00023791 4/8/2009 email from M. Smutny to W. Sexson re: stuck valve effect on CC flow test PROD00023792 4/27/2009 email from M. Smutny to W. Scholberg re: total times for cooling water and fire protection PROD00023793 3/12/2009 email from D. Smith to S. Seilhymer re: potential letdown paths during CC/HELB event PROD00023794 3/9/2009 NRC question and response - insight into operational history of the De-aerating Steam Line PROD00023795 3/9/2009 NRC question and response - "describe the response operations would take to a fire alarm" PROD00023796 3/18/2009 email from M. Smutny to D. Malek re: answers to NRC's inquiries about hypothetical CC/HELB event PROD00023797 3/18/2009 email from M. Smutny to D. Malek re: discussion about answers to NRC's inquiry about hypothetical CC/HELB event PROD00023798 3/23/2009 email from M. Smutny to D. Malek, R. Best re: answers for NRC regarding hypothetical CC/HELB event PROD00023799 3/30/2009 email from M. Smutny to D. Herling re: fire detection system during postulated HELB event PROD00023800 3/16/2009 email from M. Smutny to J. Ritter re: Operations discussion for CC/HELB event scenarios PROD00023801 5/6/2009 email from M. Smutny to J. Ritter re: CC/HELB event scenarios PROD00023802 4/3/2009 email from M. Smutny to W. Sexson re: CC valve PROD00023803 8/6/2009 email from M. Smutny to D. Malek re: CC/HELB simulator feedback 129

Document Number Description PROD00023804 5/13/2009 email from M. Smutny to J. Ritter re: CC/HELB discussion regarding re-starting the charging pumps PROD00023805 5/10/2009 email from M. Smutny to J. Ritter, T.Borgen re: human reliability analysis for C14 AOP1 actions PROD00023806 5/21/2009 email from M. Smutny to J. Ritter re: cooling water pumps failure scenarios PROD00023807 5/22/2009 email from M. Smutny to J. Ritter re: loss of cooling water scenarios PROD00023808 3/13/2009 email from M. Smutny to D. Malek re: Operator response to Fire Alarms associated with a HELB PROD00023809 3/12/2009 email from M. Smutny to P. Kluskowski re: OPS Lead for CC/HELB PROD00023810 4/6/2009 email from M. Smutny to R. Lawrie, W. Sexson re: CC/HELB issue test PROD00023811 3/13/2009 email from M. Smutny to J. Ritter re: alternate water refill sources PROD00023812 3/3/2009 email from J. Ritter to M.Smutny re: temperature of source water supplied to the RWST PROD00023813 3/13/2009 email from M. Smutny to M. Smutny, J. Ritter re: CC/HELB simulator discussion PROD00023814 3/13/2009 email from M. Smutny to J. Ritter re: CC/HELB simulator discussion PROD00023815 4/13/2009 email from M. Smutny to B. Horner, W.Sexson re: Turbine Building HELB/ CC work management process PROD00023816 3/17/2009 email from M. Smutny to J. Ritter, W. Scholberg re: Turbine building flooding information for CC/HELB PROD00023817 CE 1233806-02 potential sources of continued refueling cavity leakage PROD00023818 10/19/2009 Summary of Recent Site Refueling Cavity Leakage PROD00023819 6/9/2010 email from T. Downing to P. Zuwaski, S. Skoyen, K. Stoeder re comments on refueling cavity leakage draft PROD00023820 6/9/2010 email from T. Downing to P. Zuwaski, S. Skoyen re comments on refueling cavity leakage draft PROD00023821 Refueling Water Level Computer Screenshot PROD00023822 6/11/2010 Email from D. Rippentrop to M. Schimmel and others @ Xcel re: identified issues from CC HELB Pre-95001 inspection assessment PROD00023823 6/17/2010 Email from J. Anderson to G. Salamon and others at Xcel re: list of CC HELB issues PROD00023824 6/17/2010 Email from T. Roddey to S. DiPasquale, *dl-pi-Regulatory Inspection Daily Briefings, D. Koehl, T. Roddey, and S. Ford re: CC-HELB 95001 Inspection potential findings PROD00023825 6/21/2010 Email from S. DiPasquale to *dl-pi-Regulatory Inspection Daily Briefings, D. Koehl, T. Roddey, and S.

Ford re: CC-HELB 95001 Inspection potential findings PROD00023826 6/14/2010 Component Cooling Water System High Energy Line Break 95-001 Inspection presentation PROD00023827 6/10/2010 Email from J. Anderson to S. DiPasquale and other @ Xcel re: analysis of CC/HELB and internal flooding PROD00023828 6/8/2010 List of corrective action program items for CDBI Inspection PROD00023829 6/14/2010 Component Cooling Water System High Energy Line Break 95-001 Inspection PROD00023830 6/17/2010 e-mail from T. Roddey to Regulatory Inspection Daily Briefings e-mail distribution list re: CC/HELB 95001 Inspection PROD00023831 6/15/2010 e-mail from T. Roddey to Regulatory Inspection Daily Briefings e-mail distribution list re: CC/HELB 95001 Inspection PROD00023832 File was unable to be processed PROD00023833 06/15/2010 author unknown document re CC-HELB 95001 Interview Schedule PROD00023834 06/21/1010 author unknown memo/report re Review of potential HELB interaction concern that were identified during the NRC 95001 inspection.

130

Document Number Description PROD00023835 06/09/2010 author unknown equipment pictures, ongoing planned actions for HELB reconstitution project memo and a Nuclear Project Authorization project plan form re analysis of the consequences of pipe ruptures (high energy line breaks or HELB) outside containment PROD00023836 05/18/2010 author unknown memo re preparations and questions relating to 95001 CC-HELB inspection identifying anticipated main points of discussion PROD00023837 Date unknown author unknown NRC Question Response form No entries noted on the form PROD00023838 06/15/2010 NRC Team NRC Question Response Form re Question on tasking to provide the battery room heat up calc provided in RCE Reference D53 PROD00023839 6/15/2010 NRC Team NRC Question Response Form re request for location of specific guidance in FP-Bus-PRG-01 that governs 3 topics PROD00023840 06/16/2010 NRC Team NRC Question Response Form re tasking for a question about the probabilistic assessment used to establish a tornado missile design PROD00023841 06/16/2010 NRC Team NRC Question Response Form re tasking for a question about the acceptability of the use of non-safety related charging pumps PROD00023842 06/15/2010 NRC Team NRC Question Response Form re answer to tasking that requests the battery room heat up calc. Provides document links and states the actions are currently on going to complete the task PROD00023843 06/16/2010 request J. Ellegood initiated T.Roddey answer K.Kriesel NRC Question Response Form re answers the question of why the CC is not required to safely shut down following a design basis seismic earthquake.

PROD00023844 5/21/2009 Passport document prepared by R.Waterman reviewed by S.Myers re 50.69 Screening for tornado/severe thunderstorm compensatory measures for CC piping in the auxiliary building fuel handling area. Concludes that neither a CFR 50.69 evaluation nor a USFAR change are required PROD00023845 06/15/2010 Request by NRC Team response by S.Ford NRC Question Response Form re 50.69 screening document is attached as an answer to the request for the screening PROD00023846 06/15/2010 Request by NRC Team response by S.Ford NRC Question Response Form re requested screening forms used at PRG are attached as an answer to the request for the PRG forms PROD00023847 06/16/2010 Request by NRC Team initiated by S.DiPasquale response by K.Kriesel NRC Question Response Form re answers that a probabilistic approach was used to determine a use-as-is with no additional approvals required as an answer to the question PROD00023848 06/16/2010 Request by NRC Team initiated by S.DiPasquale response by K.Kriesel NRC Question Response Form re answers why non-safety related charging pumps are acceptable PROD00023849 12/09/2008 author unknown Xcel Energy 10CFR 50.59 implementation directive Re promulgates standardized 10CFR 50.69 implementation policy for all Xcel energy plants.

PROD00023850 06/08/2010 Sara Scott Xcel Energy Nuclear Department Fleet Guidance 50.69 Resource manual re provide standardized instructions and guidance for implementing the 10CFR50.69 process for all Xcel plants PROD00023851 03/02/2010 D.Kettering Fleet mentoring Guide - engineering support personnel training program re standardized mentoring on how to prepare a 50.69 screening. Completion of the training is required prior to being designated as a 50.69 screening reviewer 131

Document Number Description PROD00023852 03/02/2010 D.Kettering Fleet Mentoring Guide - engineering support personnel training program re standardized mentoring on how to prepare a 50.69 screening. Completion of the training is required prior to being designated as a 50.69 screening reviewer PROD00023853 03/03/2010 J.Olathe M.Schimmel Temporary Change Request document re Edited 10CFR 10.59 and 72.48 processes Rev 2 document addresses pre-job brief requirements for 50.69 or 72.48 screening preparations.

PROD00023854 Date unknown author unknown Xcel Energy 50.59 Screening document re blank Xcel Energy 50.59 Screening checklist PROD00023855 Xcel Energy 50.59 Evaluation document re blank Xcel Energy 50.59 Evaluation checklist PROD00023856 6/10/2010 NRC Question Response Form re request for 50.59 screening and evaluation procedures and forms PROD00023857 11/11/2009 PINGP Section Work Instruction SWI ENG-32 Rev. 5: 50.59 Process PROD00023858 6/17/2010 NRC Question Response Form re steam dumps to mitigate break outside containment PROD00023859 Photo Related to CC/HELB White Finding PROD00023860 Photo Related to CC/HELB White Finding PROD00023861 Photo Related to CC/HELB White Finding PROD00023862 Photo Related to CC/HELB White Finding PROD00023863 6/17/2010 NRC Question Response Form re HELB questions and information requested by NRC PROD00023864 6/21/2010 Report: Review of Potential HELB Interaction Concern During NRC 95001 Inspection PROD00023865 6/9/2010 Nuclear Project Authorization: HELB Flooding Program Reconstitution Project PROD00023866 6/21/2010 Report: Review of Potential HELB interaction Concern During NRC 95001 Inspection PROD00023867 6/17/2010 NRC Question Response Form re CL Piping question PROD00023868 6/17/2010 NRC Question Response Form re resource commitment documentation PROD00023869 6/17/2010 NRC Question Response Form re questions about walkdown observations PROD00023870 6/17/2010 NRC Question Response Form re solenoid valve SV-37039 PROD00023871 6/17/2010 NRC Question Response Form re solenoid valve SV-37039 PROD00023872 6/14/2010 NRC Question Response Form re safety related systems in non-safety related buildings PROD00023873 6/14/2010 PASSPORT Action Tracking Action Request Report TIPAA10 re configuration of CC piping PROD00023874 List with accompanying photos of CL piping configurations PROD00023875 8/4/2008 Engineering Change: Turbine Building HELB Walkdown PROD00023876 3/15/2010 Calculation Revision - Include new FW & CD analysis for the turbine bldg & remove design basis cracks from calculation PROD00023877 12/30/1999 Analysis of Record and Engineering Calculations - Appendix I - Break Location Selection PROD00023878 9/11/2000 Analysis of Record and Engineering Calculations - Appendix I - Break Location Selection PROD00023879 12/20/1999 PINGP Calculation Analysis - Appendix I - High Energy Line Breaks - Break Location Selection PROD00023880 5/21/1999 Analysis of Record and Engineering Calculations - Jet Impingement for High Energy Line Break PROD00023881 Index - CC-HELB 95001 Inspection - Question 6 PROD00023882 Photo Related to CC/HELB White Finding PROD00023883 Photo Related to CC/HELB White Finding 132

Document Number Description PROD00023884 Photo Related to CC/HELB White Finding PROD00023885 Photo Related to CC/HELB White Finding PROD00023886 Photo Related to CC/HELB White Finding PROD00023887 Photo Related to CC/HELB White Finding PROD00023888 Photo Related to CC/HELB White Finding PROD00023889 Photo Related to CC/HELB White Finding PROD00023890 Photo Related to CC/HELB White Finding PROD00023891 Photo Related to CC/HELB White Finding PROD00023892 Photo Related to CC/HELB White Finding PROD00023893 Photo Related to CC/HELB White Finding PROD00023894 Photo Related to CC/HELB White Finding PROD00023895 Photo Related to CC/HELB White Finding PROD00023896 Photo Related to CC/HELB White Finding PROD00023897 Photo Related to CC/HELB White Finding PROD00023898 Photo Related to CC/HELB White Finding PROD00023899 Photo Related to CC/HELB White Finding PROD00023900 Photo Related to CC/HELB White Finding PROD00023901 Photo Related to CC/HELB White Finding PROD00023902 Photo Related to CC/HELB White Finding PROD00023903 Photo Related to CC/HELB White Finding PROD00023904 Photo Related to CC/HELB White Finding PROD00023905 Photo Related to CC/HELB White Finding PROD00023906 Photo Related to CC/HELB White Finding PROD00023907 Photo Related to CC/HELB White Finding PROD00023908 Photo Related to CC/HELB White Finding PROD00023909 Photo Related to CC/HELB White Finding PROD00023910 Photo Related to CC/HELB White Finding PROD00023911 Photo Related to CC/HELB White Finding PROD00023912 Photo Related to CC/HELB White Finding PROD00023913 Photo Related to CC/HELB White Finding PROD00023914 Photo Related to CC/HELB White Finding PROD00023915 Photo Related to CC/HELB White Finding PROD00023916 Photo Related to CC/HELB White Finding PROD00023917 Photo Related to CC/HELB White Finding PROD00023918 List of Photo Captions for CC, CL Piping and SR Conduits PROD00023919 6/14/2010 NRC Question Response Form related to HELB Screening Criteria PROD00023920 5/31/1994 Analysis of Record and Engineering Calculations - Tornado & Seismic Evaluation of D1 & D2 Comp 133

Document Number Description PROD00023921 5/22/2009 Operability Recommendation related to CAP 1174493 - Location of CC Piping - Includes Attachments PROD00023922 6/14/2010 NRC Question Response Form related to Location of CC Valve and Tornado Event PROD00023923 6/18/2010 NRC Debrief Meeting Attendance Sheet (Blank)

PROD00023924 Power Point re: 6/14 - 6/18/2010 CC/HELB 95-001 Inspection PROD00023925 Power Point re: 6/14 - 6/18/2010 CC/HELB 95-001 Inspection PROD00023926 6/11/2010 e-mail from D. Rippentrop to M. Schimmel and others at Xcel re: 6/14 - 6/18/2010 CC/HELB 95-001 inspection PROD00023927 NOS Observation Report #2010-02-027 re: 6/1/2010 to 6/4/2010 Pre-95001 Inspection Assessment - CC/HELB PROD00023928 6/21/2010 Summary of T. Roddey and others from Xcel Discussion with NRC re: CC/HELB PROD00023929 6/14/2010 e-mail from S. DiPasquale to T. Roddey and others at Xcel re: 6/14 - 6/18/2010 CC/HELB 95-001 inspection PROD00023930 6/11/2010 e-mail from T. Roddey to C. Hessen and others at Xcel re: 6/14 - 6/18/2010 CC/HELB 95-001 inspection PROD00023931 Power Point presentation re: 6/14 - 6/18/2010 CC/HELB 95-001 inspection PROD00023932 6/10/2010 summary of HELB analysis prepared by S. Ford PROD00023933 6/17/2010 e-mail from T. Roddey to D. Kettering re: CC/HELB 95-001 inspection PROD00023934 Photo Related to CC/HELB White Finding PROD00023935 6/7/2010 e-mail from T. Roddey to S. DiPasquale re: 6/14 - 6/18/2010 CC/HELB 95-001 inspection PROD00023936 6/14/2010 e-mail from J. Anderson to S. DiPaquale re: 6/14 - 6/18/2010 CC/HELB 95-001 inspection PROD00023937 6/16/2010 e-mail from T. Roddey to S. DiPasquale re: 6/14 - 6/18/2010 CC/HELB 95-001 inspection PROD00023938 6/15/2010 e-mail from T. Roddey to S. DiPasquale re: 6/14 - 6/18/2010 CC/HELB 95-001 inspection PROD00023939 6/14/2010 e-mail from T. Roddey to S. DiPasquale re: 6/14 - 6/18/2010 CC/HELB 95-001 inspection PROD00023940 6/15/2010 e-mail from J. Anderson to S. DiPasquale and others at Xcel re: 6/14 - 6/18/2010 CC/HELB 95-001 inspection PROD00023941 6/8/2010 e-mail from T. Roddey to S. DiPasquale and others at Xcel re: 6/14 - 6/18/2010 CC/HELB 95-001 inspection PROD00023942 6/15/2010 e-mail from S. DiPasquale to T. Roddey and others at Xcel re: 6/14 - 6/18/2010 CC/HELB 95-001 inspection PROD00023943 6/10/2010 e-mail from J. Anderson to S. DiPasquale re: CC/HELB PROD00023944 6/9/2010 e-mail from S. Charbonneau to S. DiPasquale re: 6/14 - 6/18/2010 CC/HELB 95-001 inspection PROD00023945 6/11/2010 e-mail from G. Salamon to S. DiPasquale re: 6/14 - 6/18/2010 CC/HELB 95-001 inspection PROD00023946 6/11/2010 e-mail from G. Salamon to S. DiPasquale re: 6/14 - 6/18/2010 CC/HELB 95-001 inspection PROD00023947 6/11/2010 e-mail from G. Salamon to S. DiPasquale re: 6/14 - 6/18/2010 CC/HELB 95-001 inspection PROD00023948 6/10/2010 e-mail from A. Capristo to T. Roddey re: 6/14 - 6/18/2010 CC/HELB 95-001 inspection PROD00023949 6/10/2010 e-mail from T. Roddey to S. DiPasquale and others at Xcel re: 6/14 - 6/18/2010 CC/HELB 95-001 inspection PROD00023950 6/10/2010 e-mail from S. Ford to S. DiPasquale re: 6/14 - 6/18/2010 CC/HELB 95-001 inspection PROD00023951 6/10/2010 e-mail from A. Capistro to S. DiPasquale re: 6/14 - 6/18/2010 CC/HELB 95-001 inspection PROD00023952 6/14/2010 e-mail from J. Anderson to T. Roddey re: 6/14 - 6/18/2010 CC/HELB 95-001 inspection PROD00023953 6/16/2010 e-mail from T. Roddey to J. Anderson and others at Xcel re: 6/14 - 6/18/2010 CC/HELB 95-001 inspection PROD00023954 6/15/2010 e-mail from T. Roddey to Inspection Daily Briefings e-mail distribution list re: 6/14 - 6/18/2010 CC/HELB 95-001 inspection 134

Document Number Description PROD00023955 Exit Meeting documentation re: Pre-95001 Inspection Assessment - CC/HELB PROD00023956 Summary of 95001 Inspection Preparation Issues PROD00023957 Summary of CC/HELB 95001 Inspection Lessons Learned PROD00023958 June 14-18, 2010 CC HELB Team Roster PROD00023959 5/11/2010 Shift Turnover Sheet - Shift: Swings 1400-0000 PROD00023960 5/11/2010 Shift Turnover Sheet - Shift: Swings Nights 200-0800 PROD00023961 5/11/2010 Shift Turnover Sheet - Shift: Swings 1400-0000 PROD00023962 5/12/2010 Shift Turnover Sheet - Shift: Days 0600-1600 PROD00023963 5/12/2010 Shift Turnover Sheet - Shift: Swings 1400-0000 PROD00023964 10/4/2009 Shift Turnover Sheet - Shift: Nights PROD00023965 10/6/2009 Shift Turnover Sheet - Shift: Days PROD00023966 10/6/2009 Shift Turnover Sheet - Shift: Nights PROD00023967 10/7/2009 Shift Turnover Sheet - Shift: Days PROD00023968 10/7/2009 Shift Turnover Sheet - Shift: Nights PROD00023969 10/8/2009 Shift Turnover Sheet - Shift: Days PROD00023970 10/8/2009 Shift Turnover Sheet - Shift: Nights PROD00023971 10/9/2009 Shift Turnover Sheet - Shift: Days PROD00023972 10/9/2009 Shift Turnover Sheet - Shift: Nights PROD00023973 10/10/2009 Shift Turnover Sheet - Shift: Days PROD00023974 10/10/2009 Shift Turnover Sheet - Shift: Nights PROD00023975 10/11/2009 Shift Turnover Sheet - Shift: Days PROD00023976 10/11/2009 Shift Turnover Sheet - Shift: Nights PROD00023977 10/12/2009 Shift Turnover Sheet - Shift: Days PROD00023978 10/12/2009 Shift Turnover Sheet - Shift: Nights PROD00023979 10/13/2009 Shift Turnover Sheet - Shift: Days PROD00023980 10/13/2009 Shift Turnover Sheet - Shift: Nights PROD00023981 10/24/2009 Shift Turnover Sheet - Shift: Days PROD00023982 Spreadsheet - PINGP 1R26 OCC Training PROD00023983 11/30/2006 -Untitled Form related to Water Leakage into Sump B coincidental with Refueling Pool flood PROD00023984 12/2/2006 Narrative - Summary of Refuel Cavity Leakage in 2R24 PROD00023985 Photo Related to Refueling Cavity Leakage PROD00023986 Photo Related to Refueling Cavity Leakage PROD00023987 Spreadsheet - Copy of Engineering WOs for 1R23 PROD00023988 6/14/2010 Spreadsheet - PINGP 2R22 Engineering Outage Service Center Log PROD00023989 Spreadsheet - EOSC Engineering Task Tracker PROD00023990 Spreadsheet - EOSC Engineering Task Tracker PROD00023991 Spreadsheet - EOSC Engineering Task Tracker 135

Document Number Description PROD00023992 Spreadsheet - EOSC Engineering Task Tracker PROD00023993 Spreadsheet - EOSC Engineering Task Tracker PROD00023994 Agenda prepared for 10/17/2003 2R22 EOSC Post Outage Critique Meeting PROD00023995 Agenda prepared for 10/17/2003 2R22 EOSC Post Outage Critique Meeting PROD00023996 Photo Related to Refueling Cavity Leakage PROD00023997 Photo Related to Refueling Cavity Leakage PROD00023998 5/17/2010 Email from S. Skoyen to L. Johnson, R. Murray & D. Schantzen re Refueling Cavity Walkdown for SP 2750 Part A PROD00023999 Photo Related to Refueling Cavity Leakage PROD00024000 Spreadsheet - EOSC Engineering Task Tracker PROD00024001 Photo Related to Refueling Cavity Leakage PROD00024002 Spreadsheet related to Unit 1 - Sump B - In-Leakage History PROD00024003 Spreadsheet related to Unit 2 - Sump B - In-Leakage History PROD00024004 5/13/2010 Documentation Request for 95001 CC-HELB PI Supplemental Inspection PROD00024005 5/13/2010 Documentation Request for 95001 CC-HELB PI Supplemental Inspection PROD00024006 Engineering Human Performance lesson plan PROD00024007 Indications of Organizational Culture Weaknesses PROD00024008 Hypothetical scenarios to illustrate CAP decision-making PROD00024009 Design & Licensing Basis lesson plan PROD00024010 Power Point presentation titled Design & Licensing Basis PROD00024011 RCE 1145695 CC Piping Adjacent to a HELB Area re: employee training PROD00024012 Update Log Form re: Component Cooling Water System PROD00024013 Power Point presentation titled Component Cooling System (CC)

PROD00024014 Temporary Change Request form and Performance Assessment Program manual PROD00024015 Xcel manual titled Disposition of Non-Conforming Items PROD00024016 Xcel document titled Corrective Action Effectiveness Review Manual PROD00024017 Department Roll Up Meeting (DRUM) Manual - Department Performance Trending (4/27/2010)

PROD00024018 Cover Page from Fleet Procedure titled Deleted PROD00024019 Xcel procedure manual titled Operability/Functionality Determination (4/28/2010)

PROD00024020 Xcel procedure manual titled Non-Cap Action Request Process (11/3/2009)

PROD00024021 Xcel procedure manual titled Operating Experience Program (7/15/2009)

PROD00024022 Xcel Apparent Cause Evaluation Manual (4/29/2010)

PROD00024023 Xcel manual titled Preparation and Conduct of Mid-Cycle and Follow-up Assessments (2/19/2010)

PROD00024024 Xcel manual titled Focused Self-Assessment Planning, Conduct and Reporting (2/25/2010)

PROD00024025 Xcel manual titled Focused Self-Assessment and Formal Benchmarking Scheduling (2/25/2010)

PROD00024026 Xcel manual titled SnapShot Evaluation (12/1/2008)

PROD00024027 RCE Report re: Component Cooling Piping Adjacent to HELB Location in Turbine Building on 7/29/2008 136

Document Number Description PROD00024028 Action Request Report re: CAP for CC piping adjacent to HELB location in turbine building PROD00024029 Action Request Report re: CAP for non-seismic equipment in CC sys press boundary PROD00024030 Action Request Report re: CAP for performing seismic analysis PROD00024031 Action Request Report re: CAP for Turbine building HELB funding delays PROD00024032 Action Request Report re: CAP for identification of HELB and CC system interaction PROD00024033 Action Request Report re: CAP for Non-seismic equipment in CC sys press boundary PROD00024034 Calculations for Single Failure Analysis for Component Cooling System (10/1995)

PROD00024035 9/12/2008 Project Review Group (PRG) Meeting Minutes PROD00024036 RCE Report titled Identified NRC Crosscutting Issues, 7/2/2008 PROD00024037 RCE Report titled SCAQ - Inadequate CAP Resolution of Significant Issues, 1/26/2009 PROD00024038 1/2008 Chemistry Lab Component Cooling Study prepared by Sargent & Lundy PROD00024039 Text document re: CAPs for HELB issue and turbine building PROD00024040 List of EQ Components Located in the Turbine Building PROD00024041 Screen shots of Equipment/Component/UTC Parameters PROD00024042 Apparent Cause Evaluation re: CC lines affected by 7/2006 HELB PROD00024043 9/19/2008 Apparent Cause Evaluation grading sheet re: ACE 01145695 PROD00024044 9/22/2008 Engineering Change Request re: Alternate Cooling for the Cold Lab PROD00024045 9/12/2008 Project Review Group (PRG) Meeting Minutes PROD00024046 Undated spreadsheet listing Action Requests PROD00024047 12/8/2008 Project Review Group (PRG) Meeting Minutes PROD00024048 Action Request Report re: CAP for CC piping adjacent to HELB location in turbine building PROD00024049 Xcel procedure manual titled Development of Conceptual Design Concept Studies (12/10/2009)

PROD00024050 Spreadsheet titled PI 2010 - Workload Resource Plan PROD00024051 5/20/2010 PI Licensing Issue Team (LIT) Update PROD00024052 PI Regulatory Issues - Alignment and Staffing (Draft)

PROD00024053 Business Case for Filling a Non-Bargaining Position form (5/14/2010)

PROD00024054 Document titled HELB OBNs PROD00024055 Summary review of non-fleet programs and initiation of corrective actions PROD00024056 4/23/2010 Integrated Planning Process manual PROD00024057 4/29/2010 Integrated Planning Process manual PROD00024058 Action Request Report re: Revising 5AWI 6.0.0 engineering process PROD00024059 Action Request Report re: developing policy to assign project manager to O&M projects PROD00024060 Document titled Assignment of Project Managers to O&M Projects PROD00024061 3/1/2010 Letter from M. Wylie at Advent Co. to B. Slack re: proposal for AP-10-06 EDG duct analysis PROD00024062 6/14/2010 Documentation Request for 95001 CC-HELB Supplemental Inspection PROD00024063 Power Point presentation titled Human Performance for Engineers (1st Quarter 2009)

PROD00024064 Power Point presentation titled Component Cooling System (CC) 137

Document Number Description PROD00024065 6/4/2010 Xcel Energy Nuclear Department Fleet Procedure: CAP Action Request Process, Revision 26 PROD00024066 12/10/2009 Xcel Nuclear Department Fleet Procedure: Development of Conceptual Design Concept Studies, Revision 1

PROD00024067 3/10/2006 Prairie Island Nuclear Plant Root Cause Investigation Report: D6 High Crankcase Pressure Resulting in Unit 2 Shutdown, Event Date: 2/3/2006, Revision 0 PROD00024068 RCE Report: D5 Engineer 2 Elevated Crankcase Pressure During the scheduled 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> Test Run (Equipment Root Cause), Event Date: 10/22/2007, Revision 1 PROD00024069 RCE Report: Site Response to Issues with SI-9-5, Event Date: June 2006 - March 2008 PROD00024070 12/29/2005 Prairie Island Nuclear Plant Root Cause Investigation Report: Organizational Response to Operational Issues, Revision 1 PROD00024071 5/14/2010 Xcel Energy Business Case for Filling a Non-Bargain Position: Flooding and HELB Program Engineer PROD00024072 2010 Capital Long Range Plan Spreadsheet PROD00024073 6/2/2010 2010 OM Long Range Plan Spreadsheet PROD00024074 Spreadsheet re OBNs and OBDs PROD00024075 Charts for Unit 1 Revision 2.2 Model PROD00024076 Charts for Unit 2 Revision 2.2 PRA Model PROD00024077 6/8/2010 Xcel Energy Nuclear Department Fleet Procedure: Prioritization Guideline, Revision 1 PROD00024078 6/10/2010 Temporary Change Request: Project Review Group: Addresses control of studies and blanket items regardless of cost PROD00024079 Engineering Training Materials related to the topic of Design and Licensing Basis PROD00024080 Engineering Training Materials related to the topic of Design and Licensing Basis Index PROD00024081 Photo Related to CC/HELB White Finding PROD00024082 6/21/2010 Action Request Report: Screenhouse CL piping potential missile path PROD00024083 CC-HELB extent of condition reviews and HELB corrective actions PROD00024084 CC-HELB extent of condition reviews and HELB corrective actions PROD00024085 CC-HELB extent of condition reviews and HELB corrective actions PROD00024086 6/14/2010 Email from T. Roddey to S. Ford re items for flooding supporting corrective action for CCHELB PROD00024087 6/15/2010 Email from Greg Hostetter of Advent Engineering to S. Ford re 95001 inspections battery room heat-up and turbine building heat-up analysis PROD00024088 CC-HELB extent of condition reviews and HELB corrective actions PROD00024089 CC-HELB extent of condition reviews and HELB corrective actions PROD00024090 CC-HELB extent of condition reviews and HELB corrective actions PROD00024091 Handwritten notes and questions re NRC discussions PROD00024092 1/21/2009 Email from J. LeClair to S. Derleth re analysis required by DOT PROD00024093 11/6/2008 Email from M. Davis to S. Derleth re NRC Inspection Manual 0609 page D-14 PROD00024094 Table 3 Initial Radiological Safety Risk Characterization PROD00024095 10/05/2009 Email from S. Martin to R. Hite re review of Rad shipping event 138

Document Number Description PROD00024096 Attachment 6: Evaluation of Safety Culture PROD00024097 8/26/2009 Email from P. Wildenborg to S. Derleth and C. Sweet re area for improvement items for rad shipping PROD00024098 Procedure Consistency Matrix for discrete radioactive particles and packaging PROD00024099 9/4/2009 NRC 95001 TDAFWP Inspection Post Inspection Critique PROD00024100 12/3/2008 Email from K. Mews to PINGP engineers re summary of NRC 95001 inspection debriefings PROD00024101 12/01/2008 Email from K. Mews to PINGP engineers re summary of NRC 95001 inspection - 2nd day PROD00024102 12/2/2008 Email from K. Mews to PINGP engineers re Wednesday debriefing from NRC 95001 Inspection PROD00024103 1/21/2009 Email from J. LeClair to R. Hite and other engineers re rad shipping procedures PROD00024104 Draft procedures for evaluating packages and loading for shipping PROD00024105 1/22/2009 Email from J. LeClair to S. Derleth and C. Sweet re directions re performing corrective actions 012209 PROD00024106 Corrective Actions to Prevent Recurrence (CAPRs) and Effectiveness Reviews - Cause to Action Matrix PROD00024107 3/26/2006 PINGP Radiation Protection Procedures - D11.10 rev. 8: Mixed Low-Level Radioactive and Hazardous Waste (Mixed LLW) Shipment PROD00024108 4/10/2006 PINGP Radiation Protection Procedures - D11.11 Rev. 10: Radioactive Materials Shipment-LSA/SCO/LTD Qty in Exclusive Use Vehicle - to a Licensed Processing Facility PROD00024109 4/12/2006 PINGP Radiation Protection Procedure - D11.12 Rev. 2: Radioactive Materials Shipment-Old Steam Generator Upper and Lower Assemblies PROD00024110 4/12/2006 PINGP Radiation Protection Procedure - D11.13 Rev. 1: Radioactive Materials Shipment - Certified Containerized Waste to Envirocare of Utah PROD00024111 4/12/2006 PINGP Radiation Protection Procedure - D11.14 Rev. 1: Radioactive Material Shipment - LLRW to Bulk Waste Disposal Facility of Envirocare of Utah PROD00024112 3/29/2006 PINGP Radiation Protection Procedure - D11.2 Rev. 23: Radioactive Materials Shipment Greater Than Type A Quantities in Exclusive Use Vehicle to Barnwell, SC Using Chem-Nuclear Cask and HIC Liner PROD00024113 3/29/2006 PINGP Radiation Protection Procedure - D11.4 Rev. 23: Radioactive Materials Shipment Greater Than Type A Quantities in Exclusive Use Vehicle to Barnwell, SC Using RWE NUKEM Cask and HIC Liner PROD00024114 3/29/2006 PINGP Radiation Protection Procedure - D11.6 Rev. 11: Radioactive Materials Shipment - N.O.S. - other than Irradiated Fuel - Not Exceeding HRCQ PROD00024115 4/12/2006 PINGP Radiation Protection Procedure - D11.7 Rev. 15: Radioactive Materials Shipment - LSA/SCO/LTD QTY to a Licensed Facility PROD00024116 1/12/2006 PINGP Radiation Protection Procedure - D11.8 Rev. 13: Radioactive Materials Shipment Irradiated Components - Greater Than Type A - In Exclusive Use Vehicle to Barnwell, SC Using Chem-Nuclear CNS 3-55 Cask &

Liner PROD00024117 3/29/2006 PINGP Radiation Protection Procedure - D11.9 Rev. 13: Radioactive Materials Shipment - LSA/SCO -

Quantities in Exclusive Use Vehicle to Barnwell, SC PROD00024118 6/19/2007 PINGP Radiation Protection Procedure D11 Rev. 16: Radioactive Material Shipment PROD00024119 1/22/2009 Email from J. LeClair to S. Derleth re Questions about PINGP Radiation Protection Procedure Manual Section D 139

Document Number Description PROD00024120 Draft RCE 01157726 - Radioactive Material Shipment Exceeded DOT Limits PROD00024121 3/19/2009 Email from R. Hite to S. Nelson re instruments for determining potential tissue exposure to radiation PROD00024122 12/04/2009 Email from K. Mews to PINGP engineers re notes for the transportation 95001 inspection PROD00024123 11/7/2008 Email from C. Nash to S. Derleth re truck driver's stops and activities during fuel sipping equipment transport PROD00024124 10/7/2009 Email from S. Martin to S. Derleth re Forms for past low risk shipments PROD00024125 9/15/2009 Email from C. Sweet to P. Wildenborg re revisions to 95001 FSA area for improvement items for transportation RCE PROD00024126 10/21/2009 Email from C. Sweet to S. Derleth re Review of Action Items from challenge board for the NRC Transportation 95001 Inspection PROD00024127 10/21/2009 Attachment 2: Challenge Board Inspection Issue Tracking PROD00024128 Draft Letter to NRC re Response to Questions from "Meeting Summary for Regulatory Conference with Northern States Power - Minnesota" held on March 17, 2009 (EA-08-349)

PROD00024129 1/14/2009 Email from J. LeClair to C. Sweet and S. Derleth re ways of defining discrete particles PROD00024130 01/14/2009 Email from J. LeClair to C. Sweet and S. Derleth re defining discrete particle PROD00024131 CAP- AR Template PROD00024132 12/4/2009 Email from R. Hite to PINGP radioactive materials shipping program personnel re final summary for Transportation 95001 Inspection PROD00024133 3/5/2009 Email from S. Nelson to S. Derleth re instruments used for measuring emissions from radioactive materials PROD00024134 5/11/2009 NRC News: NRC Finds Shipment of Radioactive Materials Problem at Prairie Island Nuclear Station to Be of Low to Moderate Safety Significance PROD00024135 5/6/2009 NRC News: NRC to Discuss 2008 Performance Assessment for Prairie Island Nuclear Power Plant PROD00024136 3/10/2009 Email from F. Englett to S. Derleth and C. Sweet re NRC News release PROD00024137 3/9/2009 NRC News: NRC to Meet with Xcel Energy for Regulatory Conference on Potential Yellow Finding at Prairie Island Nuclear Power Plant PROD00024138 2/27/2009 Email from R. Hite to Rad Shipping personnel re P. Wildenborg's particle dose evaluation PROD00024139 Fuel Sipper Lid Hot Particle Extremity and Whole Body Dose Evaluation PROD00024140 9/28/2009 Email from R. Hite to S. Derleth re restored information for High-risk procedure PROD00024141 2/13/2009 Email from K. Huxford to Rad Shipment personnel re states shipment traveled through PROD00024142 2/13/2009 Email from S. Nelson to K. Huxford re radiation exposure due to shipment PROD00024143 2/13/2009 Email from S. Nelson to R. Hite, S. Derleth and K. Huxford re notification of potential radiation exposure from shipment PROD00024144 1/15/2010 Email from M. Davis to Rad shipping personnel re supplemental 95001 Inspection report PROD00024145 12/8/2008 Westinghouse - Qualification History Report - By Qualification: Hazmat Transportation Safety Plan PROD00024146 RP Contractor RPT 1 through 14 Qualification Matrix PROD00024147 Radiation Protection Department Qualification Matrix Rad Con Program PROD00024148 Nuclear Oversight Action Request Template re: shipment of radioactive materials PROD00024149 2/27/2009 email from R. Hite to S. Derleth re: Shipping Training and Hazmat training 140

Document Number Description PROD00024150 11/18/2009 PINGP Radiation Protection Survey Record PROD00024151 11/25/2008 email from C. Sweet to S. Darleth re: rad shipping PROD00024152 Document re: radioactive materials shipment PROD00024153 2/14/2008 PINGP H Procedure re: RPIP Writer's Manual re: Radiation Protection Implementing Procedures PROD00024154 12/19/2008 email from J. LeClair to S. Derleth and C. Sweet re: Information requests for the rad shipping assessment PROD00024155 12/9/2009 email from K. Mews to R. Hite and other Xcel employees re: Lessons learned from 95001 Inspection PROD00024156 9/3/2009 email from L. Kuehl to *DL-PI-EVERYONE re: Message from Mark Schimmel: Update on NRC findings/inspections re: Human Performance as it relates to the auxiliary feedwater pump PROD00024157 12/18/2008 email from M. Kent to P. Wildenborg and other Xcel employees re: NRC Follow up questions to fuel sipper work and shipment of radioactive material PROD00024158 5/7/2009 email from K. Huxford to *DL-PI-EVERYONE re: NRC issues final significance determination to Prairie Island PROD00024159 11/20/2008 Quarantined Controlled Documents PROD00024160 2/13/2009 email from Kelli Huxford to Scott Nelson, Robert Hite, Steven Derleth re: Preliminary Yellow NRC Violation -

Radioactive Shipping PROD00024161 1/20/2009 email from Jeffry LeClair to Robert Hite, Scott Nelson re: shipping procedure PROD00024162 1/14/2009 email from J. LeClair to R. Hite, S. Nelson, S. Desrleth, and others at Xcel re: shipping procedure change assignment PROD00024163 CAP - AR Template , Survey of empty containers coming to Prairie Island PROD00024164 CAP - AR Template, Shipping Procedural Clarification PROD00024165 11/12/2008 email from Jeffry LeClair to C. Sweet, S. Derleth re: questions about radioactive shipping event PROD00024166 10/27/2009 email from Andrew Pullam to Scott Nelson re: Radioactive Shipping Documentation Review PROD00024167 RCE Report - Radioactive Material Shipment Exceeded DOT Limits Event Date: October 30, 2008 (DRAFT)

PROD00024168 RCE Report - Radioactive Material Shipment Exceeded DOT Limits Event Date: October 30, 2008 (Revision 1)

PROD00024169 RCE Report - Radioactive Material Shipment Exceeded DOT Limits Event Date: October 30, 2008 PROD00024170 Radioactive Shipment event analysis PROD00024171 12/9/2008 email from C. Sweet to J. LeClair, R. Hite re: Root Cause Evaluation Manual for Radioactive Material Shipping Program PROD00024172 Evaluation of the Radioactive Materials Shipping Program PROD00024173 10/5/2009 email from Christopher Pecore to S. Derleth re: Assessment for radioactive shipping inspection PROD00024174 10/7/2009 email from S. Martin to S. Derleth re: radioactive shipment program questions PROD00024175 1/7/2009 email from C. Young to S. Derleth re: radioactive shipment program management PROD00024176 1/22/2009 email from J. LeClair to M. Davis re: CAP - incorrect radiation meter recorded on procedure PROD00024177 10/7/2009 email from C. Sweet to S. Martin, R. Hite re: radioactive shipping terminology PROD00024178 12/10/2008 email from R. Hite to M. Davis re: ALARA planning and the radioactive shipment program PROD00024179 Worst Case with the Total Shipment Activity Distributed Among the Entire Internal Volume of the Shipping Box PROD00024180 Regulation and monitoring of radioactive shipments - NRC and DOT PROD00024181 11/7/2008 email from R. Hite to S. Derleth , C. Nash re: transport conditions during radioactive shipment event 141

Document Number Description PROD00024182 11/7/2008 email from C. Nash to R. Hite Cc S. Derleth re: conditions of transport during radioactive shipment event PROD00024183 10/13/2009 email from S. Martin to R. Hite, S. Nelson re: analysis radioactive shipment procedure PROD00024184 10/12/2009 email from C. Sweet to S. Martin, R. Hite, S. Nelson re: discussion about high risk shipment PROD00024185 11/1/2008 email from C. Sweet to S. Nelson, J. LeClair, R. Hite re: Information Request for Shipping issue PROD00024186 10/6/2009 email from E. Boyer to C. Sweet, R. Hite re: RCE process radioactive shipment event PROD00024187 10/6/2009 email from C. Sweet to E. Boyer, R. Hite re: Monitoring of Operational Experience related to Rad Material Shipping PROD00024188 Job Risk Assessment PROD00024189 12/18/2008 email from M. Kent to P. Wildenborg, S. Derleth, C. Sweet re: NRC follow-up questions radioactive fuel shipment event PROD00024190 2/5/2009 email from R. Hite to S. Northard re: resumption of shipments PROD00024191 2/13/2009 email from S. Nelson to S. Derleth re: transport route of radioactive shipment PROD00024192 4/21/2009 email from C. Sweet to R. Hite, S. Martin re: Proposed CAP - receipt of radioactive material PROD00024193 4/16/2009 email from R. Hite to S. Martin, S. Northard, S. Derleth re: root cause evaluation - radioactive shipment event PROD00024194 4/16/2009 email from R. Hite to S. Martin, S. Northard, S. Derleth re: survey requirements for radioactive material PROD00024195 4/21/2009 email from C. Sweet to S. Martin Cc S. Derleth re: qualifications for personnel packaging radioactive material PROD00024196 Radiation survey procedure PROD00024197 Radioactive shipping procedure PROD00024198 11/14/2008 email from J. LeClair to S. Derleth re: survey record for radioactive shipment event PROD00024199 12/16/2008 email from J. Muth to R. Hite re: sources for Prairie Island radioactive material shipping procedure PROD00024200 8/28/2008 NMC Department Procedure TITLE: Internal Assessment: Topic Selection, Scheduling, and Quarterly Reporting (Revision 3)

PROD00024201 4/4/2008 NMC Nuclear Oversight - The Assessment Handbook (Revision 19)

PROD00024202 11/17/2008 email from C. Sweet to J. LeClair re: Root Cause 1157726 draft re: shipment of radioactive materials PROD00024203 3/3/2009 email from M. Dzielski to S. Derleth re: root cause at Prairie Island re: shipment of radioactive material PROD00024204 12/29/2008 email from M. Dzielski to J. LeClair re: root cause at Prairie Island re: shipping issue PROD00024205 Document re: Radioactive Material Shipment Exceeds DOT Limits (Prairie Island)

PROD00024206 11/7/2008 email from J. LeClair to C. Sweet re: site clock red sheet re: shipment of radioactive materials PROD00024207 11/7/2008 email from C. Sweet to S. Derleth re: site clock red sheet re: closed transport PROD00024208 12/1/2008 email from C. Sweet to S. Derleth re: survey for collection of data for shipment of materials PROD00024209 1/27/2009 email from J. LeClaire to S. Derleth re: changes to policy to ensure that rad shipping violations would not occur PROD00024210 Document re: steps for the shipment of radioactive materials PROD00024211 3/4/2009 Email from B. James to Rad shipping personnel re equipment for measuring radiation emissions PROD00024212 10/31/2008 Email from W. Vogel to PA Dept of Environmental Protection and Southern Pines Trucking re radioactive materials shipment exceeding DOT levels PROD00024213 12/16/2008 Email from J. LeClair to S. Derlith and C. England re information to provide to WMG 142

Document Number Description PROD00024214 11/14/2008 Email from J. LeClair to PINGP RCE Team re draft of root cause evaluation PROD00024215 Draft RCE Report: Radioactive Material Shipment Exceeded DOT Limits Event Date: October 30, 2008 PROD00024216 12/29/2008 Email from J. LeClair to M. Zielski at Spines Trucking re GPS or satellite tracking of shipment PROD00024217 Job Risk Assessment Table PROD00024218 1/12/2009 Email from J. LeClair to S. Derleth re RPIP verbiage PROD00024219 2/27/2009 Email from S. nelson to S. Huneycutt & S. Derleth re Shipping procedures PROD00024220 10/7/2009 Email from S. Martin to S. Derleth with others cc'd re Shipping resources PROD00024221 Evaluation procedures for radwaste shipping PROD00024222 1/22/2009 Email from J. LeClair to R. Hite with others cc'd re trouble with RCE PROD00024223 2/12/2010 Email from C. Sweet to J. Anderson & others re Transportation of gun sights PROD00024224 1/2004 USDoT, Pipeline & Hazardous Materials Safety Administration, Guide for Preparing Hazardous Materials Incidents Reports PROD00024225 Chart of boxes re rad shipping container excess PROD00024226 6/17/2010 photos re: HELB extent of condition walkdown by B. Slack and D. Cherlopalle PROD00024227 Transitional File Drawing - Component Cooling System PROD00024228 Control Room Transitional File NF-39236 rev 75 PROD00024229 Control Room Transitional File NF-39245-2 PROD00024230 Drawing - HELB Routing - Main Steam Auxiliary Building 755' PROD00024231 Drawing - HELB Routing - Feedwater Turbine Building 715' PROD00024232 Drawing - HELB Routing - Feedwater Turbine Building 695' PROD00024233 Drawing - HELB Routing - CVCS Letdown Auxiliary Building 715' PROD00024234 Drawing - HELB Routing - Steam Generator Blowdown Auxiliary Building 715' PROD00024235 Drawing - HELB Routing - Steam Supply to AFWPT Auxiliary Building 735' PROD00024236 Drawing - HELB Routing - Steam Supply to AFWPT Auxiliary Building 715' PROD00024237 Drawing - HELB Routing - Steam Supply to AFWPT Auxiliary Building 695' PROD00024238 Drawing - HELB Routing - Steam Supply to AFWPT Turbine Building 695' PROD00024239 Drawing - HELB Routing - Condensate Turbine Building 715' PROD00024240 Drawing - HELB Routing - Condensate Turbine Building 695' PROD00024241 Drawing - HELB Routing - Main Steam Auxiliary Building 735' PROD00024242 Drawing - HELB Routing - Blead Steam Turbine Building 715' PROD00024243 Drawing - HELB Routing - Feedwater Heating & MSR Drains Turbine Building 735' PROD00024244 Drawing - HELB Routing - Feedwater Heater & MSR Drains Turbine Building 715' PROD00024245 Drawing - HELB Routing - Feedwater Heater & MSR Drains Turbine Building 695' PROD00024246 Drawing - HELB Routing - Heater Drain Pump Discharge Turbine Building 715' PROD00024247 Drawing - HELB Routing - Heater Drain Pump Discharge Turbine Building 695' PROD00024248 Drawing - HELB Routing - Heater Drain Pump Discharge Turbine Building 679' PROD00024249 Drawing - HELB Routing - Feedwater Turbine Building 679' 143

Document Number Description PROD00024250 Drawing - HELB Routing - Feedwater Turbine Building 735' PROD00024251 Drawing - HELB Routing - Main Steam Auxiliary Building 715' PROD00024252 Drawing - HELB Routing - Main Steam Turbine Building 735' PROD00024253 Drawing - HELB Routing - Main Steam Turbine Building 715' PROD00024254 Drawing - HELB Routing - Main Steam Turbine Building 695' PROD00024255 Drawing - HELB Routing - Main Steam Turbine Building 679' PROD00024256 Drawing - HELB Routing - Feedwater Auxiliary Building 735' PROD00024257 Drawing - HELB Routing - Feedwater Turbine Building 735' PROD00024258 CC/HELB extent of conditions reviews and HELB corrective actions PROD00024259 CC/HELB extent of conditions reviews and HELB corrective actions PROD00024260 Table of Pipe Specifications PROD00024261 Handwritten notes re: pipe inspection walkdowns PROD00024262 5/6/2010 email from Chris Koehler to unknown group re: an upcoming inspection on CAPs and HELB issues PROD00024263 6/18/2010 email from Tom Roddey to Dennis Koehl and others re: upcoming NRC inspections of HELB issues PROD00024264 6/21/2010 draft of memo re: NRC inspections identifying HELB issues PROD00024265 6/1/2010 email from Tom Roddey to Brian Slack re: NRC inspection and HELB issues PROD00024266 6/14/2010 PING power point re: the component cooling system and HELB design performance deficiency PROD00024267 6/14/2010 PING power point re: the component cooling system and HELB design performance deficiency PROD00024268 6/10/2010 email from Jon Anderson to Sam DiPasquale re: root cause of CC/HELB events PROD00024269 undated memo/report re: mitigation and root cause of CC/HELB events PROD00024270 6/1/2010 PING main report re: turbine building and HELB internal flooding PROD00024271 4/28/2010 email from Vince Kelly to Brian Slack re: the action resource plan and root cause of CC/HELB events PROD00024272 PING CC and HELB inspection preparation and staffing plan PROD00024273 memo/report re: HELB and CC flooding and failures and corrective action plans PROD00024274 6/21/2010 email from Mark Huting to David Kettering and others re: CC/HELB flooding report due date PROD00024275 6/10/2010 US NRC Status on resolution of generic safety issue (GSI) 191 pressurized water reactor sump performance PROD00024276 6/14/2010 PINGP Component Cooling Water System high Energy Line Break power point presentation PROD00024277 Nuclear Project Authorization regarding HELB technical basis and regulatory correspondence PROD00024278 Nuclear Project Authorization HELB Flooding Program Reconstitution Project PROD00024279 6/9/2010 Nuclear Project Authorization HELB flooding program reconstitution project to resolve component cooling piping adjacent to HELB PROD00024280 CC-HELB extent of conditions reviews and HELB corrective actions PROD00024281 6/4/2010 email from D. Hartinger to R. Ciamarra and others at Xcel regarding functioning of feedwater heater etc.

PROD00024282 6/21/2010 Email from M. Huting to B. Slack and others re: Potter Slack Resource Utilization Schedule for W/E 6/25/2010 PROD00024283 Analysis of HELB pipe whip interactions 144

Document Number Description PROD00024284 6/21/2010 Email from R. Rohrer to B. Slack and others at Xcel, Ray Dremel, Russ Sharpe and Char Greene at Maracor and David Moore at Comcast re Turbine Building flooding report for SDP PROD00024285 Effective 6/2010 re PINGP Turbine Building HELB/Internal flooding SDP accident sequence analysis prepared by T.

Reichardt PROD00024286 CC-HELB 95001 Inspection Lessons Learned PROD00024287 6/21/2010 Review of Potential HELB Interaction Concern During NRC 95001 Inspection PROD00024288 6/4/2010 Letter from M. Schimmel to NRC re: request for a regulatory conference PROD00024289 6/22/2010 Email from S. DiPasquale to D. Kettering and others re: CC-HELB 95001, Corrective Action Response for Question 29 (Screenhouse potential tornado missile).

PROD00024290 6/4/2010 Email from S. Larson to T. Roddy and others re: HELB historical basis document PROD00024291 7/14/2010 Letter from M. Schimmel to NRC re: supplemental information regarding NRC Inspection Reports 05000282/2010010; 05000306/2010010 (EA-10-070)

PROD00024292 6/4/2010 Email from K. Kriesel to B. Slack re: definition of pipe class I PROD00024293 4/7/2010 Licensing Issue Team (LIT) Update PROD00024294 6/5/2010 Email from C. Agan to B. Slack re: specific exclusion for piping that does not meet high energy status greater than 2%

PROD00024295 6/10/2010 Email from J. Anderson to S. DiPasquale and others re: Action Items for the CC-HELB Challenge Board PROD00024296 6/10/2010 Email from K. Ryan to S. DiPasquale and others re: Action Items for the CC-HELB Challenge Board PROD00024297 6/11/2010 Email from J. Anderson to D. Vincent re: Scientech licensing basis search PROD00024298 6/11/2010 Email from D. Vincent to J. Anderson re: Scientech licensing basis search PROD00024299 6/11/2010 Email from D. Vincent to L. Rippy and others re: possible security issues with drawings to be put in the docketed submittal to NRC PROD00024300 6/10/2010 Email from S. Ford to B. Slack re: extent of condition review PROD00024301 6/4/2010 Email from R. Ciamarra to R. Rohrer and D. Hartinger re: Heater Drain Valves PROD00024302 6/4/2010 Email from M. Goggin to S. Larson and others re: HELB flooding program reconstitution project PROD00024303 6/4/2010 Email from A. Smith to B. Slack re: HELB historical basis document PROD00024304 6/4/2010 Email from S. Larson to B. Slack and A. Smith re: HELB historical basis document PROD00024305 6/4/2010 Email from S. Larson to B. Slack and A. Smith re: HELB historical basis document PROD00024306 Pine Island Flooding SDP Updated Action Item List PROD00024307 6/3/2010 email from S. Larson to M. Goggin re: Urgent need for HELB Program Reconstitution NPA PROD00024308 6/21/2010 Email from T. Roddey to D. Kettering and others re: updated response to 95001 HELB evaluation concern PROD00024309 6/3/2010 Email from S. Larson to M. Goggin re: Urgent need for HELB Program Reconstitution NPA PROD00024310 10/19/2009 Summary of Recent Site Refueling Cavity Leakage Activities PROD00024311 6/9/2009 email from S. Skoyen to T. Downing re: Refueling Cavity Leakage - Draft for quarterly inspection report PROD00024312 6/10/2010 email from P. Zurawski to S. Skoyen and T. Downing re: revision of Refueling Cavity Leakage - Draft PROD00024313 6/10/2010 email from P. Zurawski to T. Downing and S. Skoyen re: language to use regarding Refueling Cavity Leakage - Draft 145

Document Number Description PROD00024314 6/9/2010 email from P. Zurawski to S. Skoyen re: language to use in Refueling Cavity Leakage - Draft PROD00024315 6/9/2010 email from P. Zurawski to T. Downing and S. Skoyen re: language to use in Refueling Cavity Leakage - Draft PROD00024316 6/9/2010 email from T. Downing to P. Zurawski and S. Skoyen re: language to use in Refueling Cavity Leakage - Draft PROD00024317 6/9/2010 email from T. Downing to S. Skoyen re: language to use in Refueling Cavity Leakage - Draft PROD00024318 6/10/2010 email from S. Skoyen to P. Zurawski re: language to use in Refueling Cavity Leakage - Draft PROD00024319 6/9/2010 email from S. Skoyen to P. Zurawski re: language to use in Refueling Cavity Leakage - Draft PROD00024320 6/10/2010 email from S. Skoyen to P. Zurawski and T. Downing re: language to use in Refueling Cavity Leakage - Draft PROD00024321 6/10/2010 email from S. Skoyen to P. Zurawski and T. Downing re: language to use in Refueling Cavity Leakage - Draft PROD00024322 6/9/2010 email from P. Zurawski to S. Skoyen re: language to use in Refueling Cavity Leakage - Draft PROD00024323 6/10/2010 Nuclear Oversight 1st Quarter of 2010 Assessment Report for Prairie Island PROD00024324 1R26 and 2R26 Modification Summary Support PROD00024325 6/10/2009 1R26/2R26 Outage Management Meeting Materials PROD00024326 6/10/2009 1R26/2R26 Outage Management Meeting Materials PROD00024327 1R26 Outlook Challenge Meetings PROD00024328 2009 Project Budgets Spreadsheet PROD00024329 2009 O&M long range plan spreadsheet PROD00024330 3/24/2010 Outage Management Meeting Materials PROD00024331 3/31/2010 Outage Management Meeting Materials PROD00024332 4/7/2010 Outage Management Meeting Materials PROD00024333 2/25/2008 Prairie Island 1R25 OCC Shift Update PROD00024334 2/26/2008 Prairie Island 1R25 OCC Shift Update PROD00024335 2/27/2008 Prairie Island 1R25 OCC Shift Update PROD00024336 9/16/2009 Prairie Island 1R26 OCC Shift Update PROD00024337 9/17/2009 Prairie Island 1R26 OCC Shift Update PROD00024338 9/18/2009 Prairie Island 1R26 OCC Shift Update PROD00024339 9/19/2009 Prairie Island 1R26 OCC Shift Update PROD00024340 9/20/2009 Prairie Island 1R26 OCC Shift Update PROD00024341 9/21/2009 Prairie Island 1R26 OCC Shift Update PROD00024342 9/22/2009 Prairie Island 1R26 OCC Shift Update PROD00024343 9/22/2009 Prairie Island 1R26 OCC Shift Update PROD00024344 9/24/2009 Prairie Island 1R26 OCC Shift Update PROD00024345 9/25/2009 Prairie Island 1R26 OCC Shift Update PROD00024346 9/26/2009 Prairie Island 1R26 OCC Shift Update PROD00024347 9/27/2009 Prairie Island 1R26 OCC Shift Update PROD00024348 9/28/2009 Prairie Island 1R26 OCC Shift Update PROD00024349 9/29/2009 Prairie Island 1R26 OCC Shift Update PROD00024350 9/30/2009 Prairie Island 1R26 OCC Shift Update 146

Document Number Description PROD00024351 10/1/2009 Prairie Island 1R26 OCC Shift Update PROD00024352 10/2/2009 Prairie Island 1R26 OCC Shift Update PROD00024353 10/3/2009 Prairie Island 1R26 OCC Shift Update PROD00024354 10/4/2009 Prairie Island 1R26 OCC Shift Update PROD00024355 10/5/2009 Prairie Island 1R26 OCC Shift Update PROD00024356 10/6/2009 Prairie Island 1R26 OCC Shift Update PROD00024357 10/7/2009 Prairie Island 1R26 OCC Shift Update PROD00024358 10/8/2009 Prairie Island 1R26 OCC Shift Update PROD00024359 10/9/2009 Prairie Island 1R26 OCC Shift Update PROD00024360 10/10/2009 Prairie Island 1R26 OCC Shift Update PROD00024361 10/11/2009 Prairie Island 1R26 OCC Shift Update PROD00024362 10/12/2009 Prairie Island 1R26 OCC Shift Update PROD00024363 10/13/2009 Prairie Island 1R26 OCC Shift Update PROD00024364 10/14/2009 Prairie Island 1R26 OCC Shift Update PROD00024365 10/15/2009 Prairie Island 1R26 OCC Shift Update PROD00024366 10/16/2009 Prairie Island 1R26 OCC Shift Update PROD00024367 10/17/2009 Prairie Island 1R26 OCC Shift Update PROD00024368 10/18/2009 Prairie Island 1R26 OCC Shift Update PROD00024369 10/19/2009 Prairie Island 1R26 OCC Shift Update PROD00024370 10/20/2009 Prairie Island 1R26 OCC Shift Update PROD00024371 10/21/2009 Prairie Island 1R26 OCC Shift Update PROD00024372 10/22/2009 Prairie Island 1R26 OCC Shift Update PROD00024373 10/23/2009 Prairie Island 1R26 OCC Shift Update PROD00024374 10/24/2009 Prairie Island 1R26 OCC Shift Update PROD00024375 10/25/2009 Prairie Island 1R26 OCC Shift Update PROD00024376 10/26/2009 Prairie Island 1R26 OCC Shift Update PROD00024377 10/27/2009 Prairie Island 1R26 OCC Shift Update PROD00024378 10/28/2009 Prairie Island 1R26 OCC Shift Update PROD00024379 10/29/2009 Prairie Island 1R26 OCC Shift Update PROD00024380 10/30/2009 Prairie Island 1R26 OCC Shift Update PROD00024381 10/31/2009 Prairie Island 1R26 OCC Shift Update PROD00024382 11/1/2009 Prairie Island 1R26 OCC Shift Update PROD00024383 11/2/2009 Prairie Island 1R26 OCC Shift Update PROD00024384 11/3/2009 Prairie Island 1R26 OCC Shift Update PROD00024385 11/4/2009 Prairie Island 1R26 OCC Shift Update PROD00024386 11/5/2009 Prairie Island 1R26 OCC Shift Update PROD00024387 11/6/2009 Prairie Island 1R26 OCC Shift Update 147

Document Number Description PROD00024388 1/14/2009 1R26/2R26 Outage Management Meeting Materials PROD00024389 1/20/2010 Outage Management Meeting Materials PROD00024390 1/27/2010 Outage Management Meeting Materials PROD00024391 1/28/2009 1R26/2R26 Outage Management Meeting Materials PROD00024392 1/7/2009 1R26/2R26 Outage Management Meeting Materials PROD00024393 2/20/2008 Prairie Island 1R25 OCC Shift Update PROD00024394 2/25/2008 Prairie Island 1R25 OCC Shift Update PROD00024395 2/26/2008 Prairie Island 1R25 OCC Shift Update PROD00024396 2/27/2008 Prairie Island 1R25 OCC Shift Update PROD00024397 4/17/2010 Prairie Island 2R26 OCC Shift Update PROD00024398 9/16/2009 Prairie Island 1R26 OCC Shift Update PROD00024399 9/17/2009 Prairie Island 1R26 OCC Shift Update PROD00024400 9/18/2009 Prairie Island 1R26 OCC Shift Update PROD00024401 9/20/2009 Prairie Island 1R26 OCC Shift Update PROD00024402 9/20/2009 Prairie Island 1R26 OCC Shift Update PROD00024403 9/21/2009 Prairie Island 1R26 OCC Shift Update PROD00024404 9/22/2009 Prairie Island 1R26 OCC Shift Update PROD00024405 9/23/2009 Prairie Island 1R26 OCC Shift Update PROD00024406 9/24/2009 Prairie Island 1R26 OCC Shift Update PROD00024407 9/25/2009 Prairie Island 1R26 OCC Shift Update PROD00024408 9/27/2009 Prairie Island 1R26 OCC Shift Update PROD00024409 9/27/2009 Prairie Island 1R26 OCC Shift Update PROD00024410 9/28/2009 Prairie Island 1R26 OCC Shift Update PROD00024411 9/29/2009 Prairie Island 1R26 OCC Shift Update PROD00024412 9/30/2009 Prairie Island 1R26 OCC Shift Update PROD00024413 10/1/2009 Prairie Island 1R26 OCC Shift Update PROD00024414 10/2/2009 Prairie Island 1R26 OCC Shift Update PROD00024415 10/3/2009 Prairie Island 1R26 OCC Shift Update PROD00024416 10/4/2009 Prairie Island 1R26 OCC Shift Update PROD00024417 10/5/2009 Prairie Island 1R26 OCC Shift Update PROD00024418 10/6/2009 Prairie Island 1R26 OCC Shift Update PROD00024419 10/7/2009 Prairie Island 1R26 OCC Shift Update PROD00024420 10/8/2009 Prairie Island 1R26 OCC Shift Update PROD00024421 10/9/2009 Prairie Island 1R26 OCC Shift Update PROD00024422 10/10/2009 Prairie Island 1R26 OCC Shift Update PROD00024423 10/11/2009 Prairie Island 1R26 OCC Shift Update PROD00024424 10/12/2009 Prairie Island 1R26 OCC Shift Update 148

Document Number Description PROD00024425 10/13/2009 Prairie Island 1R26 OCC Shift Update PROD00024426 10/14/2009 Prairie Island 1R26 OCC Shift Update PROD00024427 10/15/2009 Prairie Island 1R26 OCC Shift Update PROD00024428 10/16/2009 Prairie Island 1R26 OCC Shift Update PROD00024429 10/17/2009 Prairie Island 1R26 OCC Shift Update PROD00024430 10/18/2009 Prairie Island 1R26 OCC Shift Update PROD00024431 10/19/2009 Prairie Island 1R26 OCC Shift Update PROD00024432 10/20/2009 Prairie Island 1R26 OCC Shift Update PROD00024433 10/21/2009 Prairie Island 1R26 OCC Shift Update PROD00024434 10/22/2009 Prairie Island 1R26 OCC Shift Update PROD00024435 10/24/2009 Prairie Island 1R26 OCC Shift Update PROD00024436 10/25/2009 Prairie Island 1R26 OCC Shift Update PROD00024437 10/25/2009 Prairie Island 1R26 OCC Shift Update PROD00024438 10/26/2009 Prairie Island 1R26 OCC Shift Update PROD00024439 10/27/2009 Prairie Island 1R26 OCC Shift Update PROD00024440 10/28/2009 Prairie Island 1R26 OCC Shift Update PROD00024441 10/29/2009 Prairie Island 1R26 OCC Shift Update PROD00024442 10/30/2009 Prairie Island 1R26 OCC Shift Update PROD00024443 10/31/2009 Prairie Island 1R26 OCC Shift Update PROD00024444 11/1/2009 Prairie Island 1R26 OCC Shift Update PROD00024445 11/2/2009 Prairie Island 1R26 OCC Shift Update PROD00024446 11/3/2009 Prairie Island 1R26 OCC Shift Update PROD00024447 11/4/2009 Prairie Island 1R26 OCC Shift Update PROD00024448 11/5/2009 Prairie Island 1R26 OCC Shift Update PROD00024449 9/9/2004 Prairie Island 1R23 OCC Issues Log Spreadsheet PROD00024450 2/21/2008 1R25 News/outage newsletter PROD00024451 2/22/2008 1R25 News/outage newsletter PROD00024452 Challenges List w/ action descriptions, owners, and comments PROD00024453 1/11/2010 1R26 Post Outage Critique Meeting Materials PROD00024454 12/15/2010 1R26 Post Outage Critique Meeting Materials PROD00024455 12/15/2009 1R26 Post Outage Critique Meeting Materials PROD00024456 7/10/2009 Prairie Island 1R26 Outage Readiness Review Power Point PROD00024457 Complete Readiness Challenge Process Spreadsheet PROD00024458 1R26 Post Outage Critique Meeting Materials PROD00024459 1R26 HIT project Complex Work Coordinator Team Membership Chart PROD00024460 1R26 HIT Project Complex Work Coordinator Team Membership Chart PROD00024461 11/6/2009 Prairie Island 1R26 OCC Shift Update 149

Document Number Description PROD00024462 1R27 Modifications List PROD00024463 1R27 Modifications List PROD00024464 Production Planning 2010 Excellence Plan PROD00024465 Prairie Island Base Outage Cost PROD00024466 2/10/2010 Outage Management Meeting Materials PROD00024467 2/11/2009 Outage Management Meeting Materials PROD00024468 2/17/2010 Outage Management Meeting Materials PROD00024469 2/18/2009 1R26/2R26 Outage Management Meeting Materials PROD00024470 2/24/2010 Outage Management Meeting Materials PROD00024471 2/3/2010 Outage Management Meeting Materials PROD00024472 2/4/2009 1R26/2R26 Outage Management Meeting Materials PROD00024473 2/28/2008 2R25 News/outage newsletter PROD00024474 2R26 Contingencies Spreadsheet PROD00024475 4/27/2010 2R26 Dose Reduction PROD00024476 2R26 Modification List PROD00024477 4/13/2010 2R26 outage employee schedule PROD00024478 2R26 outage employee schedule PROD00024479 11/1/2009 email from D. Raebel to others at Xcel re 2R26 contingency planning PROD00024480 2R26 Outage Team Membership List PROD00024481 2R26 Outage Team Membership List PROD00024482 2R26 Outage Team Membership List PROD00024483 3/10/2010 Outage Management Meeting Materials PROD00024484 3/1/2010 Outage Management Meeting Materials PROD00024485 3/17/2010 Outage Management Meeting Materials PROD00024486 3/18/2009 Outage Management Meeting Materials PROD00024487 3/4/2009 Outage Management Meeting Materials PROD00024488 4/1/2009 1R26/2R26 Outage Management Meeting Materials PROD00024489 4/15/2009 1R26/2R26 Outage Management Meeting Materials PROD00024490 4/29/2009 1R26/2R26 Outage Management Meeting Materials PROD00024491 5/13/2009 1R26/2R26 Outage Management Meeting Materials PROD00024492 6/10/2009 1R26/2R26 Outage Management Meeting Materials PROD00024493 6/24/2009 1R26/2R26 Outage Management Meeting Materials PROD00024494 6/3/2009 1R26/2R26 Outage Management Meeting Materials PROD00024495 7/15/2009 1R26/2R26 Outage Management Meeting Materials PROD00024496 7/15/2009 1R26/2R26 Outage Management Meeting Materials PROD00024497 7/15/2009 1R26/2R26 Outage Management Meeting Materials PROD00024498 7/21/2009 1R26/2R26 Outage Management Meeting Materials 150

Document Number Description PROD00024499 7/28/2003 RV Bottom Head Inspection HIT Team Meeting Minutes PROD00024500 7/29/2009 1R26/2R26 Outage Management Meeting Materials PROD00024501 7/72009 1R26/2R26 Outage Management Meeting Materials PROD00024502 8/11/2009 1R26/2R26 Outage Management Meeting Materials PROD00024503 8/26/2009 1R26/2R26 Outage Management Meeting Materials PROD00024504 8/5/2009 1R26/2R26 Outage Management Meeting Materials PROD00024505 9/2/2009 1R26/2R26 Outage Management Meeting Materials PROD00024506 Activity ID, Name, Start Date, Finish Date, Dept., System Spreadsheet PROD00024507 Action Items Spreadsheet w/entry date, description, owner, due date, completion comments PROD00024508 Challenges List w/ action descriptions, owners, and comments PROD00024509 Closed Action Items List w/ description due date, owner, AR#, closure comments PROD00024510 Refuel Cavity Caulking Maintenance Procedure PROD00024511 Lessons learned from U12 refueling cavity leakage repair PROD00024512 Refueling Work Reactor and Refueling PROD00024513 HIT Project Review re reactor head work PROD00024514 3/24/2004 HIT Project Review re reactor work PROD00024515 HIT Project Review re reactor work PROD00024516 HIT Teams Meeting Action Register PROD00024517 10/10/2009 Prairie Island Refuel Outage 1R26 Containment Turnover Update PROD00024518 1R25 refueling outage OCC Action Items/Issues Status Spreadsheet PROD00024519 1R25 refueling outage OCC Action Items/Issues Status Spreadsheet PROD00024520 Spreadsheet w/dates and entries PROD00024521 6/23/2010 Outage Management Meeting Materials PROD00024522 6/9/2010 Outage Management Meeting Materials PROD00024523 1R24 Scope Changes spreadsheet PROD00024524 2R24 Scope Changes spreadsheet PROD00024525 Prairie Island 1R25 Outage readiness review Power Point PROD00024526 HIT Teams Sponsor and Leader List PROD00024527 Complex Work Sponsor and Leader List PROD00024528 2/11/10 Prairie Island 2R26 Outage Readiness Review PROD00024529 10/15/2008 2R25 RCP Status Update PROD00024530 10/16/2008 2R25 RCP Status Update PROD00024531 10/17/2008 2R25 RCP Status Update PROD00024532 10/18/2008 2R25 RCP Status Update PROD00024533 10/22/2008 2R25 RCP Status Update PROD00024534 10/24/2008 2R25 RCP Status Update PROD00024535 10/25/2008 2R25 RCP Status Update 151

Document Number Description PROD00024536 10/28/2008 2R25 RCP Status Update PROD00024537 10/29/2008 2R25 RCP Status Update PROD00024538 10/13/2008 2R25 RCP Status Update PROD00024539 10/14/2008 2R25 RCP Status Update PROD00024540 10/15/2008 2R25 RCP Status Update PROD00024541 10/16/2008 2R25 RCP Status Update PROD00024542 10/20/2008 2R25 RCP Status Update PROD00024543 10/21/2008 2R25 RCP Status Update PROD00024544 10/23/2008 2R25 RCP Status Update PROD00024545 10/25/2008 2R25 RCP Status Update PROD00024546 1R26 Scope Changes Spreadsheet PROD00024547 2R26 Scope Changes Spreadsheet PROD00024548 Spreadsheet w/ work order#, activity description requestor, date, add/remove, sent to, justification, disposition, date reviewed PROD00024549 1R25 notice re cavity leakage repair and foreign material intrusion PROD00024550 notice re RCS and crud burst PROD00024551 notice re maintenance work update PROD00024552 5/1/2010 SOD Turnover PROD00024553 5/1/2010 SOD Turnover PROD00024554 5/2/2010 SOD Turnover PROD00024555 1/29/2009 email from D. Smith to J. Ritter re CC/HELB calculations for decay heat flow requirements PROD00024556 1/28/2009 email from D. Smith to J. Ritter re CC/HELB calculations for decay heat flow requirements PROD00024557 3/5/2009 email from D. Smith to J. Ritter, T. Bacon re CC/HELB calculations discussion PROD00024558 2/10/2009 email from D. Smith to J. Ritter, re CC/HELB calculations discussion PROD00024559 2/9/2009 email from D. Smith to J. Ritter re CC/HELB calculations discussion PROD00024560 2/14/2010 Nuclear Project Authorization for Unit 2 Refueling Cavity Leakage PROD00024561 Description of TDAWFP Pump trip with Photo PROD00024562 PINGP NRC Preliminary White Finding re: cooling water system piping PROD00024563 8/5/2009 letter from NRC to M. Wadley re PINGP NRC Inspection report preliminary white finding PROD00024564 NRC Summary of Findings re PINGP Inspection of component cooling water system PROD00024565 8/25/2008-8/29/2008 PINGP Nuclear Safety Culture Assessment conducted by Utilities Service Alliance PROD00024566 6/18/2008 PINGP Team Notes re Nuclear Safety culture PROD00024567 Interview techniques for tool in self-assessment process PROD00024568 Tab Z NRC Cross Cutting Components and Aspects PROD00024569 Z1 NRC Safety Culture Components Short Descriptions PROD00024570 Z2 NRC Cross Cutting Components/ Aspects NPO Principle attribute 152

Document Number Description PROD00024571 Tab Z3 RC Regulatory Issue Summary 2006-13 Information on the changes made to the reactor oversight process to more fully address safety culture PROD00024572 Tab Z4 NRC Sample Questions for safety culture components PROD00024573 Personal responsibility and safety culture notes discussion PROD00024574 Leadership commitment and personal responsibility discussion notes PROD00024575 Organizational Trust and safety culture discussion notes PROD00024576 Decision making safety focus discussion notes PROD00024577 Nuclear uniqueness and safety culture discussion PROD00024578 Questioning attitude document discussion and notes PROD00024579 Organizational Learning document discussion and notes PROD00024580 Continuous Examination document discussion and notes PROD00024581 12/1/2009 Prairie Island Public Meeting addressing substantive cross-cutting issues in the area of human performance PROD00024582 2009 Safety culture flow chart PROD00024583 11/2009 Prairie Island Nuclear Generating Plant station management safety culture input PROD00024584 Prairie Island 95001 Inspection Informational Guide PROD00024585 Symptoms of Declining Plant Performance bubble chart PROD00024586 Symptoms of Declining Plant Performance - with handwritten notes PROD00024587 Manager's Update on Pride Initiative - Recovery Plan for Green NRC Findings PROD00024588 2/3/2009 - Leadership Forum Slideshow - 2009 Focus Areas and Priorities PROD00024589 1/7/2009 Problem Analysis Session - Focus Group Action Recommendation PROD00024590 1/7/2009 Problem Analysis Session Focus Group Action Recommendations PROD00024591 Nuclear Safety Culture/Site Wide Stand Down Group Discussion PROD00024592 1/7/2009 Problem Analysis Session Focus Group Action Recommendations PROD00024593 7/22/2009 Handwritten notes re potential NRC issues PROD00024594 8/07/2009 Handwritten notes for potential NRC issues PROD00024595 7/30/2007 Pulse Surveys power point presentation MSRC 2007-02 PROD00024596 ECP Data Analysis of work places concerns, 4 graphs PROD00024597 Reactor allegations by CY received January 2003 - August 2007 PROD00024598 Reactor allegation form on-site sources by CY received January 2003 - August 2007 PROD00024599 Reactor open allegations by CY received January 2003 - August 2007 PROD00024600 Reactor allegations substantiated by CY received January 2003 - August 2007 PROD00024601 Reactor Allegations substantiated with violations/enforcement by CY received: 01/2003 - 08/2007 PROD00024602 2007 NMC Survey Results PROD00024603 2006 NMC Pulse Survey Results PROD00024604 2006 NMC Pulse Survey Results PROD00024605 NMC Pulse Survey Results PROD00024606 NMC Pulse Survey Results 153

Document Number Description PROD00024607 NMC Pulse Survey Results PROD00024608 NMC Pulse Survey Results PROD00024609 NMC Pulse Survey Results PROD00024610 NMC Pulse Survey Results PROD00024611 NMC Pulse Survey Results PROD00024612 NMC Pulse Survey Results PROD00024613 2006 NMC Pulse Survey Results PROD00024614 April 2009 PINGP 4 Indices: SCWE, Plant Risk, PI & R, and Human Performance PROD00024615 May 2009 PINGP 4 Indices: SCWE, Plant Risk, PI & R, and Human Performance PROD00024616 10/8/2009 Station Performance and Recovery Plan presentation materials PROD00024617 10/8/2009 Station Performance and Recovery Plan ppt presentation PROD00024618 PRIDE Performance Recovery Plan and attachments PROD00024619 PRIDE Performance Recovery Plan and attachments PROD00024620 Performance Recovery Initiative ppt presentation PROD00024621 4/6/2009 Full Potential Program ppt presentation PROD00024622 Pride Initiative PROD00024623 6/16/2009 memo re establishing zero tolerance for Overdue CAPS PROD00024624 6/16/2009 Prairie Island Performance Assessment Review Board Memorandum of Understanding PROD00024625 5/12/2009 Recovery Plan Sequential Report re Human Performance PROD00024626 95001 FSA for TDAFW Pump Exit - RCE 1146005 Report with handwritten notes PROD00024627 Action plan to improve Safety Culture PROD00024628 Performance Assessment Department Accountabilities PROD00024629 Management Work Management - Communication Roles & Responsibilities PROD00024630 NRC Reactor Oversight / Safety Culture Vulnerability - Gap Analysis conducted by CERTREC CORPORATION PROD00024631 3/12/2009 email from Mark Reidmeyer to Mike Wadley re: Gap closure plan for Procedure Quality and Decision Making PROD00024632 Gap Closure Plan - Procedure Quality PROD00024633 Calculations for CC/HELB flooding PROD00024634 11/2005 NEMA Enclosure Types PROD00024635 Reactor Makeup System Control Logic Drawings PROD00024636 6/14/2010 Summary of Discussion with NRC PROD00024637 5/13/2010 NRC Question Response Form re various administrative procedures and reports PROD00024638 5/13/2010 95001 CC-HELB Prairie Island Supplemental Inspection Documentation Request PROD00024639 6/14/2010 NRC Question Response Form re final configuration of piping penetration PROD00024640 6/14/2010 NRC Question Response Form re 125 VDC Panel 162 in Aux Bldg PROD00024641 4/5/2002 PINGP Condition Report: Revised HELB temperatures for the 715, 735, and 755 Auxiliary Building PROD00024642 6/14/2010 NRC Question Response Form re safety related systems in non-safety related buildings PROD00024643 6/15/2010 NRC Question Response Form re location of CC isolation valve w/r/t tornados 154

Document Number Description PROD00024644 Operability Recommendation re CC piping routed through area where it may not be adequately protected against tornados PROD00024645 Operability Recommendation re HELB analysis that was never reviewed and approved PROD00024646 6/15/2010 Action Request Report: Battery Room Heat up Calc was cancelled with no replacement PROD00024647 2/8/1995 Letter from B. Beasley with TENERA to R. Fraser with PINGP re Revisions of TENERA Battery Room Analyses PROD00024648 2/3/1995 Report on Battery Room Loss of Ventilation prepared by Tenera PROD00024649 6/15/2010 Action Request Report: Adverse trend in errors in OPRS PROD00024650 6/15/2010 NRC Question Response Form re engineering training on licensing basis PROD00024651 6/15/2010 NRC Question Response Form re seismic situations PROD00024652 50.59 Screening: Compensatory Measures for CC Piping in the Auxiliary Building Fuel Handling Area PROD00024653 6/10/2010 Group of Temporary Change Requests PROD00024654 6/16/2010 NRC Question Response Form re PINGP's use of probabilistic assessment PROD00024655 7/15/1992 Design Basis Reconstitution Effort Identified a Condition Outside the Plant Design Basis PROD00024656 6/30/1992 Letter from G. Aandahl with Design Standards to K. Albrecht re D1 Component Missile Protection PROD00024657 Configuration Management Follow-on Item: Short Term Assessment: D1 Component Missile Protection PROD00024658 9/19/1991 Safety Evaluation: Evaluation of Disel Generator and Diesel Cooling Water Pump Fuel Oil Storage and Day Tank Vent Piping Design PROD00024659 6/16/1992 Safety Evaluation: Tornado Missile Hazard vs. D1 PROD00024660 5/4/1992 Probabilistic Risk Assessment of D1 EDG Room Door Vulnerability to Tornado Missiles PROD00024661 6/16/2010 NRC Question Response Form re acceptability of use of non-safety related charging pumps for RCP seals during an accident PROD00024662 6/28/1991 Except from report describing training course for individuals who perform seismic review PROD00024663 Memo from J. Partlow with Office of Nuclear Reactor Regulation re Supplement No 1 to Generic Letter 87-02 that Transmits Supplemental Safety Evaluation Report No. 2 on SQUG Generic Implementation Procedure, Revision 2, as Corrected on February 14, 1992 PROD00024664 Supplemental Safety Evaluation Report No. 2 on SQUG Generic Implementation Procedure, Revision 2, as Corrected on February 14, 1992 for Implementation of GL 87-02 (USI A-46), Verification of Seismic Adequacy of Equipment in Older Operating Nuclear Plants PROD00024665 6/17/2010 NRC Question Response Form re steam dumps during steam line breaks PROD00024666 NRC Question Response Form re break in main steam drain line PROD00024667 6/17/2010 Action Request Report: MS trap & drain line pipe whip into CC pipes PROD00024668 6/17/2010 NRC Question Response Form re CL piping in screenhouse w/r/t tornado missile impacts PROD00024669 8/3/1970 Engineering drawings/schematics: Screenhouse Cooling Water Piping Unit 1 & 2 PROD00024670 8/3/1970 Engineering drawings/schematics re Screenhouse Cooling Water Piping Unit 1 & 2 PROD00024671 6/17/2010 NRC Question Response Form re PINGP's Design Basis HELB study PROD00024672 6/17/2010 Email from A. Smith to S. DiPasquale re status of HELB assessment funding 155

Document Number Description PROD00024673 6/16/2010 2010 CC-HELB 95001 Q/A - All Open Items PROD00024674 Apparent Cause Evaluation: Opportunities to identify HELB and CC system interaction were missed, Revision 3 PROD00024675 8/3/2009 Action Request Report: Missed opportunities to identify HELB and CC system interactions PROD00024676 8/3/2009 Action Request Report: Non-seismic Equip in CC SYS Press Boundary PROD00024677 9/18/2008 Apparent Cause Evaluation: CC lines identified as being affected by HELB and lack of CAP, Revision 3 PROD00024678 1/15/2010 Action Request Report: CC piping adjacent to HELB location in turbine bldg PROD00024679 10/4/1995 PINGP Calculation Cover Sheet: Single Failure Analysis for the Component Cooling System PROD00024680 10/4/1995 Calculation Verification Checklist: Single Failure Analysis for the Component Cooling System PROD00024681 5/1990 Single Failure Analysis for the Component Cooling System, prepared by Pioneer Engineers & Consultants PROD00024682 Single Failure Analysis for the Component Cooling System: Table 2 PROD00024683 Single Failure Analysis for the Component Cooling System: Table 3 PROD00024684 Single Failure Analysis for the Component Cooling System: Table 4: QAI-to-QAII/III Piping Boundaries PROD00024685 Single Failure Analysis for the Component Cooling System: Table 5: Component Classification / Electrical Data PROD00024686 Single Failure Analysis for the Component Cooling System: Table 6: Component Classification / Electrical Data PROD00024687 Single Failure Analysis for the Component Cooling System: Table 7: Flow Diagram "QA Type Designation" Discrepancies PROD00024688 Single Failure Analysis for the Component Cooling System: Table 8: Interlock Logic Diagram and Instrument List Discrepancies PROD00024689 Operability Recommendation Form re Non-Seismic Equipment in CC System Pressure Boundary with comments PROD00024690 1/21/2010 Action Request Report: Non-Seismic Equip in C SYS Press Boundary PROD00024691 8/12/2009 Engineering Change Request: Add a closed loop cooling water circuit for turbine building loads PROD00024692 6/2/2006 Letter from S. Raupp with Sargent & Lundy to S. Thomas w/ NMC re Proposal for preparation of cost estimates for isolation of the component cooling system piping to cold chemistry lab PROD00024693 1/9/2006 Fleet Procedure: CAP Action Request Process, Revision 10 PROD00024694 3/13/2008 Fleet Procedure: CAP Action Request Process, Revision 18 PROD00024695 CAP Action Request Process, Nuclear Department Fleet Procedure 5/14/2009 PROD00024696 NMC Corporate Office Quality Procedures, Action Request Process 12/14/2003 PROD00024697 8/03/2009 Action Request Report, Seismic Analysis of the CC system PROD00024698 8/03/2009 Action Request Report, Turbine building HELB calculation work PROD00024699 7/31/2008 SOMS Narrative Log Search PROD00024700 3/10/2006 NMC Cause Investigation Report PROD00024701 6/26/2003 NMC Cause Investigation Report PROD00024702 11/13/2005, 11/30/2005, 12/29/2005 NMC Cause Investigation Report PROD00024703 NMC RCE Report, D5 Inoperability - Organizational Issues 10/22/2007 PROD00024704 3/03/2006 AES proposal to provide engineering services for the CC piping project PROD00024705 8/01/2005 Engineering Assistance Request for CC piping in cold chem lab PROD00024706 7/24/2006 Screening Committee Meeting Agenda 156

Document Number Description PROD00024707 1/14/2008 Chemistry Lab Component Cooling Study by NMC PROD00024708 7/15/1998 Potential for HELB to degrade component cooling water system PROD00024709 7/02/2008 Identified NRC Crosscutting Issues NMC Report PROD00024710 RCE Report - Site Response to Issues with SI-9-5, June 2006 - March 2008 PROD00024711 Site Response to Issues with 11 TD AFWP Turbine Bearing Failure 03/23/2008 PROD00024712 RCE Report - TSC Ventilation System 07/15/2008 PROD00024713 RCE Report PINGP Radioactive Material Shipment 10/30/2008 PROD00024714 RCE Report, SCAQ Inadequate CAP Resolution of Significant Issues 01/26/2009 PROD00024715 PINGP investigation of CAP & issue resolution 02/27/2009 PROD00024716 Interview questions for CAP investigation PROD00024717 Process Failure Modes Chart for CAP Investigation PROD00024718 Organizational and Management Failure Modes Chart for CAP Investigation PROD00024719 Human Performance Failure Modes Chart for CAP Investigation PROD00024720 Why Staircase attachment for CAP Investigation PROD00024721 Failure Modes Analysis Diagram for CAP Investigation PROD00024722 AR Process Flow Analysis for CAP Investigation PROD00024723 RCE Action Review Summary for CAP Investigation PROD00024724 Procedure Review Barrier Analysis for CAP Investigation PROD00024725 Apparent Cause Evaluation for CAP AR#01154831 PROD00024726 8/07/2009 Interview with S. Meyers re potential for turbine building HELB to impact CC piping PROD00024727 Handwritten notes re events and white findings from September 2003 - May 2007 PROD00024728 1/12/2010 Interview notes with S Myers re HELB PROD00024729 1/12/2010 Follow up questions with S Myers re HELB PROD00024730 1/13/2010 Interview with B Slack re HELB PROD00024731 8/05/2009 Interview with D Anderson re HELB and the CCW System PROD00024732 Handwritten answers to interview questions re HELB and CC piping, author unidentified PROD00024733 8/06/2009 Interview questions for S Leingang re HELB and CC piping PROD00024734 Interview questions with S Leingang re HELB and CC piping PROD00024735 8/06/2009 Interview questions with M Davis re HELB and CC piping PROD00024736 8/06/2009 Handwritten notes from interview with M Meyer re HELB issues from August 1997 through June 2007 PROD00024737 8/06/2009 Interview with M Davis re HELB and CC piping PROD00024738 8/05/2009 Interview with G Wheelcock re HELB and CC piping PROD00024739 8/05/2009 Interview with G Wheelcock re HELB and CC piping PROD00024740 8/05/2009 Handwritten notes from interview with G Wheelcock re HELB and CC piping PROD00024741 8/06/2009 Interview with M Meyer re HELB and CC piping PROD00024742 Handwritten notes from interview with M Davis re HELB and CC piping PROD00024743 8/06/2009 Interview with M Meyer re HELB and CC piping 157

Document Number Description PROD00024744 2/02/2010 Interview with W Hadeka re understanding of accident and safety data PROD00024745 2/02/2010 interview with M Cabriro re understanding of accident and safety data PROD00024746 2/27/2010 Interview with M Domke re understanding of accident and safety data PROD00024747 2/27/2010 Interview with K Holmstrom re understanding of accident and safety data PROD00024748 2/27/2010 Interview with B Horner re understanding of accident and safety data PROD00024749 8/05/2009 Interview with D Anderson re HELB and CC piping PROD00024750 Handwritten notes from interview with D Anderson re HELB and CC piping PROD00024751 Interview Summaries re HELB and CC piping PROD00024752 6/28/1990 Follow-on item, determine SI pump seal and lube oil cooling requirements PROD00024753 12/05/1990 letter from Ben Stephens of Design Standards to D. Mendele re determine SI pump seal and lube oil cooling requirements PROD00024754 2/10/1997 interoffice memo from J Kivi to File 90XCM5-J000A0108 re closure of file, determine SI pump seal and lube oil cooling requirements PROD00024755 1/23/1996 Internal Correspondence from J. Kivi to File 90XCM5-J000A0108 re closure of FOI no. A0108 "Determine SI pump seal and lube oil cooling requirements" PROD00024756 11/27/2000 Licensing Event Report re Flooding from Postulated Failure of Air/Vacuum valve PROD00024757 11/27/2000 Licensing Event Report by J. Stanton on Flooding from Postulated Failure of Air/Vacuum valve PROD00024758 1/17/2007 Licensing Event Report by A. Hunstad on CC Alignments are not within intent of technical specifications PROD00024759 Configuration Management Follow-On Item Assessment re: evaluation of Cooling Water System to withstand a single active failure PROD00024760 7/19/1995 response to FOI No. A0862 - CL Single Failure Analysis Open Issues PROD00024761 May 1995 FOI No. A0863 re: CC Single Failure Analysis Open Issues PROD00024762 May 1995 Response to FOI No. A0863 - CC Single Failure Analysis Open Issues PROD00024763 10/10/1999 Memo re Auxiliary building HELB analyses are discussed and used as rationale to evaluate the S&L Calc issue PROD00024764 08/04/2009 K.Christopher Passport Action Tracking report re turbine building HELB analysis PROD00024765 08/04/2009 K.Christopher Passport Action Tracking Report CAP re discussion of turbine building HELB analysis PROD00024766 09/17/2007 Engineering assistance request re interaction of HELB status and steam exclusion damper replacement study PROD00024767 3/19/2007 Request for Phased Authorization re: the replacement of the cooling water valves PROD00024768 8/4/2009 Study data - Component Cooling Piping to Cold & Hot Chem Labs are not Seismically Qualified and HELB is a concern PROD00024769 1/5/2009 Request for Phased Approval TITLE: Unit 1 and Unit 2 Pressurizer PORV Backup Air PROD00024770 4/12/2005 Prairie Island Long Range Project and Major Maintenance Plan PROD00024771 8/4/2009 O / M Long Range Plan PROD00024772 10/10/1999 email to T. Amundson cc R. Lalone, M. Brossart re: revised HELB schedule 158

Document Number Description PROD00024773 7/26/2001 letter from NRC to J. Sorensen re: CAP program TITLE: PINGP NRC Inspection Report 50-282/01-11(DRP);

50-306/01-11(DRP)

PROD00024774 June 11 - 29, 2001 NRC Report No: 50-282/01-11(DRP); 50-306/01-11(DRP) re: corrective action program PROD00024775 Engineering Assistance Request TITLE: Component Cooling Piping in the Cold Chem Lab is not Seismically Qualified PROD00024776 7/30/2004 NMC Corporate Office Quality Procedures Performance Assessment Fleet Procedure by J. Hill regarding the operating experience program PROD00024777 3/2/2006 letter from Stevenson and Associates to M. Myer regarding request for proposal CC piping project and engineering cost estimate.

PROD00024778 12/11/2000 US NRC Office of Nuclear Reactor Regulation regarding Potential Loss Redundant Safety Related Equipment Because of the lack of High Energy Line Break Barriers PROD00024779 12/11/2000 US NRC Office of Nuclear Reactor Regulation Potential Loss of Redundant Safety Related Equipment Because of the Lack of High Energy Line Break Barriers PROD00024780 1/21/2010 Action Request Report re: HELB Resolution Project cost overruns PROD00024781 1/12/2010 Action Request Report re: HELB Project cost overruns PROD00024782 1/12/2010 Action Request Report re: CC piping adjacent to HELB location in U2 turbine building PROD00024783 PINGP Q-List Validation Project Component Cooling System Report PROD00024784 2/8/2008 letter from M. Meyer to S. Raupp re: Request for Proposal, CC Piping Project PROD00024785 2/8/2006 letter from M. Meyer to S. Raupp re: Request for Proposal, CC Piping Project and Component Cooling Piping Project Engineering Work Scope PROD00024786 Letter from S. Raupp to M. Meyer re: Sargent and Lundy proposal for engineering support for the Component Cooling Piping Project Engineering Work Scope PROD00024787 Component Cooling Piping Project Engineering Work Scope PROD00024788 3/3/2006 letter from S. Raupp to M. Meyer re: Sargent & Lundy's proposal to NMC for providing engineering services to support the Component Cooling Piping Project at PINGP PROD00024789 6/2/2006 letter from S. Raupp to S. Thomas re: Sargent & Lundy's Proposal for Preparation of Cost Estimates for Isolation of the Component Cooling (CC) System Piping to Cold Chemistry Lab PROD00024790 2/15/2007 letter from R. Lindberg to E. Halverson re: Proposal for Preparation of Refined Alternatives for Isolation of the Component Cooling (CC) System Piping to Cold Chemistry Lab PROD00024791 3/30/2007 faxed Procurement Contract between Prairie Island and Sargent & Lundy PROD00024792 PINGP Task Scoping Document - Mechanical Design CC Piping Project PROD00024793 1/30/2008 letter from R. Lindberg to P. Huffman re: Engineering Cost Estimate for a Study to Upgrade Chemistry Hot and Cold Laboratories PROD00024794 August/September 2008 Cold Laboratory Temporary Cooling Design Description Preliminary PROD00024795 1/15/2010 Engineering Change Request re: (PRI 44) Alternate Cooling for the Cold Lab PROD00024796 8/4/2008 Engineering Change re: Turbine Building HELB Walkdown PROD00024797 8/28/2008 document re: issue with CC lines to the cold lab discovered while conducting a HELB evaluation of Component Cooling (CC) piping in the Turbine Building on 7/29/2008 159

Document Number Description PROD00024798 EQ Components Located in the Turbine Building PROD00024799 06/05/2009 PINGP CCW/Turbine Building SDP Issue Risk Significance PROD00024800 01/12/1999 PINGP Operating Experience Assessment program establishment PROD00024801 PINGP CC System surveillance requirements PROD00024802 12/30/1995 Operability Determinations, guidance for the review of operability determinations and resolution of nonconforming conditions PROD00024803 07/08/2009 Operability Determinations for safety related systems PROD00024804 8/5/1998 Letter from Beth Wetzel (Office of Nuclear Reactor Regulation) to Roger Anderson re resolution of USI A-46 form PINGP PROD00024805 8/5/1998 NRC Safety Evaluation re USI A-46 program implementation PROD00024806 11/20/1995 Letter from NRC to NSP/PINGP re response to generic letter 87-02, verification of seismic adequacy of mechanical and electrical equipment PROD00024807 November 1995 NRC USI A-46 resolution seismic evaluation report PROD00024808 12/31/1996 Follow up letter from NSP/PINGP to NRC re verification of seismic adequacy of mechanical and electrical equipment PROD00024809 Prairie Island Updated Safety Analysis Report regarding high energy piping systems and required equipment PROD00024810 Condition Report Description- Auxiliary Building HELB analysis and environmental evaluation for prairie island auxiliary building PROD00024811 HELB review of EQ components PROD00024812 2009 (first quarter) human performance for engineers power point presentation PROD00024813 Design and Licensing Basis - ESP Continuing - training power point presentation PROD00024814 6/16/2010 Passport Action Tracking- Action Request Report regarding tornado and seismic evaluation of components PROD00024815 Area for Improvement EN.2-2 Text PROD00024816 8/7/2009 Action Request Report: Evaluate Turbine Building HELB Analysis PROD00024817 1/15/2010 Action Request Report: Turbine Building HELB Analysis Not Completed by INPO Date PROD00024818 1/13/2010 Action Request Report: INPO Commitments - Engineering Programs AFI EN.2-2 PROD00024819 1/13/2010 Action Request Report: Evaluate Auxiliary Building HELB Analysis PROD00024820 1/13/2010 Action Request Report: Evaluate Turbine Building HELB Analysis PROD00024821 1/13/2010 Action Request Report: Determine Proper Safety Class/QA Type for Pipe and Components PROD00024822 1/13/2010 Action Request Report: INPO Commitments: Engineering Programs AFI EN.2-2 PROD00024823 8/7/2009 Action Request Report re Auxiliary Building HELB Analysis PROD00024824 Turbine Building HELB Analysis Action Plan and History PROD00024825 12/15/2004 Turbine Building HELB Analysis Action Plan - Updated PROD00024826 12/15/2004 Turbine Building HELB Analysis Action Plan - Updated PROD00024827 Turbine Building HELB Analysis Action Plan PROD00024828 8/1/2008 NMC Operability Recommendation re Turbine Building CC Piping with handwritten notes PROD00024829 USAR Appendix I - Pipe Stress and Pipe Whip - SE #479-AI-03 160

Document Number Description PROD00024830 4/19/2006 Spreadsheet - Review of Issues and Options to Modify CC Piping to meet Upgraded Classification PROD00024831 Turbine Building HELB Analysis Action Plan PROD00024832 12/16/2004 Action Request Report re Auxiliary Building HELB Analysis PROD00024833 12/15/2004 Turbine Building HELB Analysis Action Plan - Updated PROD00024834 12/15/2004 Turbine Building HELB Analysis Action Plan - Updated PROD00024835 12/15/2004 Turbine Building HELB Analysis Action Plan - Updated PROD00024836 3/29/1994 PINGP Abnormal Operating Procedures - Loss of Component Cooling PROD00024837 1/10/2006 PINGP Abnormal Operating Procedures - Loss of Component Cooling PROD00024838 Spreadsheet detailing Priorities related to CAP # 449041 PROD00024839 June 2007Chemistry Lab Component Cooling Study PROD00024840 1/26/2006 Component Cooling Water System Phase 1 Study of Nonsafety Related CC Piping PROD00024841 7/15/2005 Meeting Notes re Qualification of CC Piping PROD00024842 7/27/2005 Email from L. Clewett to S. Myers w/ M. Runion & T. Silverberg cc'd re Extension of CA 10530 PROD00024843 7/20/2005 Notes made by A. Wureski, S. Myers & C. Koehler re CC piping to Cold Chem lab PROD00024844 Activity Requested: seismic analysis on 1 lines with comments PROD00024845 Review of Seismic Qualification of Components Identified in CAP037749 PROD00024846 7/25/2005 Letter from S. Raupp with Sargent & Lundy to A. Qureshi with NMC re Proposal for study of component cooling system piping to cold chemistry and hot chemistry labs PROD00024847 Unit 1 CC P&ID Drawing Coordinates D-7 for Report on Component Cooling System SR/NSR Boundary PROD00024848 3/31/2005 Internal Operating Experience PROD00024849 3/22/2005 Internal Operating Experience PROD00024850 2/15/2005 Internal Operating Experience PROD00024851 6/1/2009 Root Cause Evaluation Manual PROD00024852 Apparent Cause Evaluation CAP AR #01162511 Opportunities to identify HELB and CC system interaction were missed PROD00024853 12/15/2008 Action Request Report CAP 01162511 Missed opportunities to identify HELB and CC system interaction PROD00024854 11/20/2004 Action Request Report CAP 00737382 Non-Seismic Equipment in CC system press boundary PROD00024855 9/18/2008 Apparent Cause Evaluation CAP AR # 01145695 CC lines were identified as being affected by HELB PROD00024856 7/9/2009 Action Request Report CAP CC piping adjacent to HELB location in turbine building PROD00024857 5/1990 Single Failure Analysis for the Component Cooling System at PINGP PROD00024858 Operability Recommendation Form re Non-Seismic Equipment in CC System Pressure Boundary PROD00024859 8/2/2004 Action Request Report CAP 00737382 Non-Seismic Equipment in CC system Press Boundary PROD00024860 6/2/2006 letter from B. Raupp to S. Thomas re Proposal for preparation of cost estimates for isolation of CC system piping from Cold Chemistry lab piping PROD00024861 1/9/2006 CAP Action Request Process manual PROD00024862 3/13/2008 CAP Action Request Process manual PROD00024863 5/14/2009 CAP Action Request Process manual 161

Document Number Description PROD00024864 10/15/2003 Action Request Process Procedure PROD00024865 3/29/2005 Action Request Report CAP 00826114 Perform Seismic Analysis CC system PROD00024866 7/10/2008 Action Request Report CAP 01143812 re Turbine building HELB funding delays could affect project success PROD00024867 PINGP Root Cause Evaluation of Organizational Response to Operational Issues PROD00024868 3/3/2006 letter from A. Setlor to M. Meyer re proposal to provide engineering services for the CC piping project PROD00024869 8/1/2005 Engineering Assistance Request re CC piping is not seismically qualified and HELB is a concern PROD00024870 7/24/2006 Screening Committee Meeting Agenda PROD00024871 1/14/2008 Chemistry Lab Component Cooling Study PROD00024872 RCE Identified NRC Crosscutting Issues PROD00024873 10/30/2009 RCE re Radioactive Material Shipment Exceeded DOT Limits PROD00024874 RCE re Inadequate CAP Resolution of Significant Issues PROD00024875 Process Failure Modes Chart PROD00024876 Organizational and Management Failure Modes Chart PROD00024877 Human Performance Failure Modes Chart PROD00024878 Why Staircase re CAP AR initiators not providing sufficient detail, safety culture, and other issues PROD00024879 Failure Modes Analysis Diagram PROD00024880 AR Process Flow Analysis PROD00024881 RCE Action Review Summary PROD00024882 Procedure Review Barrier Analysis PROD00024883 Apparent Cause Evaluation, CAP 01154831, re failure in application of conservative assumptions resulted in a delay in implementation of corrective actions for resolving Bus 15 Load Sequencer failure codes and 11 Turbine Driven Auxiliary Feed Water Pump high bearing temperature PROD00024884 1/12/2010 Interview Notes with Sonja Myers PROD00024885 1/12/2010 Followup Questions with Sonja Myers PROD00024886 8/7/2009 RCE 1145695, Interview Questions with Sonja Meyers PROD00024887 1/13/2010 Interview with Bryan Slack PROD00024888 8/5/2009 RCE 1145695: Interview Questions: Don Anderson PROD00024889 Notes on an interview re CRE 1145695 PROD00024890 8/6/2009 RCE 1145695: Interview Questions: Scott Leingang PROD00024891 Notes on an interview with Scott Leingang re RCE 1145695 PROD00024892 8/6/2009 RCE 1145695: Interview Questions: Mark Davis PROD00024893 8/6/2009 RCE 1145695: Interview Questions: Mark Davis PROD00024894 8/5/2009 RCE 1145695: Interview Questions: Gary Wheelcock PROD00024895 8/5/2009 RCE 1145695: Interview Questions: Gary Wheelcock PROD00024896 8/6/2009 RCE 1145695: Interview Questions: Mark Meyer PROD00024897 8/6/2009 RCE 1145695: Interview Questions: Mark Meyer PROD00024898 2/2/2010 RCE 1145695: Interview Questions: Walt Hadeka 162

Document Number Description PROD00024899 2/2/2010 RCE 1145695: Interview Questions: Martin Cabriro PROD00024900 2/27/2010 RCE 1145695: Interview Report: Matt Domke PROD00024901 8/5/2009 RCE 114595: Interview Questions: Don Anderson PROD00024902 Interview Summaries, Revision 2 PROD00024903 1/21/2010 Action Request Report: Conduct an assessment of the results from SOER 02-4, Rec. 3A and 3B PROD00024904 4/29/2003 Internal Correspondence from SOER 02-4 Rec. 3 Screening Team to CARB re SOER 02-4 Recommendation 3a and 3b PROD00024905 SOER 02-4 Recommendation 3: Worst-case outcome ranking of A and B significant levels PROD00024906 SOER 02-4 Recommendation 3: Background information on A and B significant levels PROD00024907 SOER 02-4 Recommendation 3: C and D significant level list PROD00024908 SOER 02-4 Recommendation 3: Non-equipment issues from staff solicitation PROD00024909 7/16/1990 Configuration Management Follow-On Item Identification Form: Determine SI Pump leak and lube oil cooling requirements PROD00024910 12/5/1990 Letter from B. Stephens with Design Standards to D. Mendele re Determine SI Pump Seal and Luble Oil Cooling Requirements PROD00024911 Configuration Management Follow-On Item Resolution Short Term Assessment: Determine SI Pump Seal and Lube Oil Cooling Requirements PROD00024912 Configuration Management Follow-On Item Resolution Long Term Assessment: Determine SI Pump Seal and Lube Oil Cooling Requirements PROD00024913 Reference page for Configuration Management Follow-On Item Resolution: Determine SI Pump Seal and Lube Oil Cooling Requirements PROD00024914 2/10/1997 Internal Correspondence from J. Kivi to File: 90XCM5-J000A0108 re Closure of FOI No. A0108 PROD00024915 10/25/1990 Record of Meeting/Telecon re Solzen-Bingham Pump PROD00024916 1/23/1996 Internal Correspondence from J. Kivi to File: 90XCM5-J000A0108 re Closure of FOI No. A0108 PROD00024917 2/21/2005 Activity Request: External Operating Experience: Internal OE from Kewaunee - CAP025588 The Condensate Makeup Line to AFW Pumps is Vulnerable to a FW Line Break PROD00024918 2/21/2005 Internal Operating Experience Rapid Notification Report re CAP 025588 (HELB issue)

PROD00024919 8/5/2009 Action Request Record Report re HELB breaks and certain equipment being susceptible to damage from pipe whip PROD00024920 Report: Condensate Makeup Line to AFW Pumps is Vulnerable to a FW Line Break PROD00024921 Manifest Worksheet: LER 1-00-03 Flooding from Postulated Failure of Air/Vacuum Valve Has Potential to Disable Both Trains of Essential Service (Cooling) Water PROD00024922 11/27/2000 letter from J Sorensen (NMC) to NRC re: LER 1-00-03 Flooding from Postulated Failure of Air/Vacuum Valve Has Potential to Disable Both Trains of Essential Service (Cooling) Water PROD00024923 1/29/2001 Licensee Event Report Flooding from Postulated Failure of Air/Vacuum Valve Has Potential to Disable Both Trains of Essential Service (Cooling) Water 163

Document Number Description PROD00024924 1/17/2007 Letter from R Anderson to NRC re Determination That Some Component Cooling System Alignments Are Not Within Intent of Technical Specifications PROD00024925 Licensee Event Report re: Determination That Some Component Cooling System Alignments Are Not Within Intent of Technical Specifications PROD00024926 Configuration Management Follow-on Item (FOI) Assessment No. A0862 re: CL Single Failure Analysis Open Issues PROD00024927 References for previous FOI A0862 PROD00024928 7/19/1995 Memo from Bob Peterson to John Goldsmith re: FOI No. A0862 "CL Single Failure Analysis Open Issues" PROD00024929 Configuration Management Follow-on Item (FOI) Assessment No. A0863 re: CL Single Failure Analysis Open Issues PROD00024930 References for previous FOI A0863 PROD00024931 May 1995 Memo from Bob Peterson to John Goldsmith re: FOI No. A0863 "CL Single Failure Analysis Open Issues" PROD00024932 1/18/2007 Action Request Report re A/R 01072605: Revised U2 FW Analysis has New HELB Cracks Requiring Evaluation PROD00024933 2/14/2004 Action Request Report re A/R 00576240: HELB issue has been organized into two major tasks PROD00024934 Turbine Building HELB Analysis Action Plan PROD00024935 Summary of actions taken for Turbine and Auxiliary Building HELB Analyses PROD00024936 Turbine Building HELB Analysis Action Plan (updated December 15, 2004)

PROD00024937 Notebook Attachment for Issue Number 19991622 re error in computer code relied upon with Turbine Building HELB analysis PROD00024938 8/4/2009 Action Request Report re A/R No. 00034885: Cancel Safety Evaluation #SE-519 PROD00024939 Summary of CAPS regarding Turbine Building HELB Analysis PROD00024940 9/1/2007 Engineering Assistance Request (EAR) re proper operation of Steam Exclusion dampers needed to support HELB break design criteria PROD00024941 8/4/2009 Study Data Report for different projects including HELB analysis PROD00024942 4/12/2005 Prairie Island Long Range Project and Major Maintenance Plan PROD00024943 8/4/2009 O/M Long Range Plans PROD00024944 7/26/2001 Letter from NRC to J Sorensen (PINGP) re corrective action program PROD00024945 June 2001 NRC Inspection Report PROD00024946 7/24/2006 Prairie Island Screening Committee Meeting Minutes re CC Piping in Cold Chem Lab PROD00024947 Engineering Assistance Request (EAR) re Component Cooling Piping in Cold Chem Lab is not Seismically Qualified PROD00024948 12/19/2002 Operability Determination of safety-related equipment, systems, structures and components PROD00024949 3/2/2006 Letter from P Gazda (Stevenson & Associates) to M Meyer (PINGP) re engineering cost estimate for Component Cooling (CC) project PROD00024950 12/11/2000 NRC Report re Potential Loss of Redundant Safety-related Equipment Because of Lack of HELB Barriers PROD00024951 12/11/200 letter/information notice from NRC re: HELB safety concerns PROD00024952 1/21/2010 Action Request Report re: HELB resolution project and general safety PROD00024953 1/12/2010 Action Request Report re: HELB resolution project and general safety PROD00024954 1/12/2010 Action Request Report re: HELB event safety and component cooling system 164

Document Number Description PROD00024955 12/11/2006 PING report re: component cooling system and HELB safety project PROD00024956 Memo re: safety projects including seismic events safety and HELB PROD00024957 2/28/2006 letter from Sargent & Lundy re: component cooling water system and HELB safety project PROD00024958 undated memo re: safety projects including seismic events safety and HELB PROD00024959 2/8/2006 NRC letter to PING re: HELB safety project PROD00024960 8/3/2009 PING report re: piping project and seismic event concerns PROD00024961 9/22/2008 engineering report re: PING component cooling water system and HELB risk significance PROD00024962 8/4/2008 engineering report re: HELB risk significance PROD00024963 6/5/2009 report re: PING component cooling water system and HELB risk significance PROD00024964 8/5/1998 NRC report re: PING safety evaluation including seismic event safety PROD00024965 11/1/1995 report by Stevenson & Associates re: seismic events evaluation PROD00024966 Report re: PING HELB and pipe failure analysis rev 22 PROD00024967 8/7/2008 email from B.Slack to G.Hostetter re: Control Room Heat/Cooling Load in case of HELB and whether HELB would result in safety injection PROD00024968 9/4/2008 email from B. Slack to G. Hostetter re: Plateau Learning Expiration Notification for employee Dennis R Barnaby 165

ATTACHMENT 2 Northern States Power Co.

Prairie Island Nuclear Generating Plant, Units 1 and 2 License Renewal Proceeding Docket Nos. 50-282-LR, 50-306-LR; ASLBP No. 08-871-01-LR Proprietary Log for NSPMs First Supplemental Disclosures Regarding Safety Culture Contention (June 30, 2010)

Document Date Entity Claiming Protected Description Number Status PROP00000240 Aug-91 EPRI - Electric Power Heat-Stress management Program for Power Plants (Revision Research Institute 1)

PROP00000241 5/21/2009 EPRI EPRI HRA Calculator 4.1 - 0LPMCHGGHXY, Operator Fails to Start the Standby Charging Pump Following LOCC Due to 3/8" Pipe Break in Gas House PROP00000242 5/21/2009 EPRI EPRI HRA Calculator 4.1 - 0LRCPVC11XY, Operator Fails to open VC-1-1 PROP00000243 3/1/2009 EPRI EPRI HRA Calculator 4.0 - Report Detailing Various HFE Analyses related to Loss of CC PROP00000244 3/1/2009 EPRI Report - EPRI HRA Calculator 4.0 - HFE Analyses PROP00000245 5/6/2009 Curtis-Wright Corporation 05/06/2009 Email from J.Grobbelaar to R.Best and J.Ritter cc J.Julius Re Prairie Island SDP Simulator runs - flood prevention in the turbine building PROP00000246 5/6/2009 Curtis-Wright Corporation 05/06/2009 Email from J.Grobbelar to J.Ritter cc R.Best and J.Julius Re PI SDP simulator runs discussing HELP event large break flow and predicted flooding effects on the turbine building and the component cooling system PROP00000247 5/6/2009 Curtis-Wright Corporation 05/06/2009 Email from J.Ritter to J.Grobbelar cc R.Best and J.Julius Re PI SDP simulator runs discussing HELP event large break flow and predicted flooding effects on the turbine building and the component cooling system PROP00000248 5/5/2009 Curtis-Wright Corporation 05/05/2009 Email from J.Grobbelaar to J.Ritter cc R.Best and J.Julius Re PI SDP simulator runs. Related to operator training PROP00000249 5/5/3009 Curtis-Wright Corporation 05/05/2009 Email from J.Grobbelaar to J.Ritter cc R.Best and J.Julius Re PI SDP simulator runs.

1

Document Date Entity Claiming Protected Description Number Status PROP00000250 5/5/2009 Curtis-Wright Corporation 05/05/2009 Email from J.Grobbelaar to J.Ritter cc R.Best and J.Julius Re PI SDP simulator runs.

PROP00000251 5/5/2009 Curtis-Wright Corporation 05/05/2009 Email from J.Grobbelaar to J.Ritter cc R.Best and J.Julius Re PI SDP simulator runs.

PROP00000252 5/4/2009 Curtis-Wright Corporation 05/05/2009 Email from J.Grobbelaar to J.Ritter cc R.Best and J.Julius Re PI SDP simulator runs.

PROP00000253 5/1/2009 Curtis-Wright Corporation 05/01/2009 Email from J.Ritter to J.Grobbelar cc R.Best and J.Julius Re PI SDP simulator runs discussing HELB event large break flow and predicted flooding effects on the turbine building and the component cooling system PROP00000254 5/1/2009 Curtis-Wright Corporation 05/01/2009 Email from J.Grobbelar to J.Ritter cc R.Best and J.Julius Re PI SDP simulator runs discussing HELP event large break flow and predicted flooding effects on the turbine building and the component cooling system PROP00000255 5/1/2009 Curtis-Wright Corporation 05/01/2009 Email from J.Grobbelar to J.Ritter cc R.Best and J.Julius Re PI SDP simulator runs discussing HELB event large break flow and predicted flooding effects on the turbine building and the component cooling system PROP00000256 4/29/2009 Curtis-Wright Corporation 04/29/2009 Email from J.Ritter to J.Grobbelar cc R.Best, D.Malek and J.Julius Re PI SDP simulator runs discussing HELB event large break flow and predicted flooding effects on the turbine building and the component cooling system PROP00000257 4/29/2009 Curtis-Wright Corporation 04/29/2009 Email from J.Grobbelar to J.Ritter cc R.Best and J.Julius Re PI SDP simulator runs discussing HELB event large break flow and predicted flooding effects on the turbine building and the component cooling system PROP00000258 4/28/2009 Curtis-Wright Corporation 04/28/2009 Email from J.Ritter to J.Grobbelar cc R.Best and J.Julius Re PI SDP simulator runs discussing HELB event large break flow and predicted flooding effects on the turbine building and the component cooling system PROP00000259 4/28/2009 Curtis-Wright Corporation 04/28/2009 Email from J.Grobbelar to J.Ritter cc R.Best and J.Julius Re PI SDP simulator runs discussing HELB event large break flow and predicted flooding effects on the turbine building and the component cooling system 2

Document Date Entity Claiming Protected Description Number Status PROP00000260 4/28/2009 Curtis-Wright Corporation 04/28/2009 Email from J.Julius to J.Ritter and J.Grobbelaar cc R.Best and K.Kohlhepp Re PI SDP simulator runs discussing HELB event large break flow and predicted flooding effects on the turbine building and the component cooling system PROP00000261 4/27/2009 Curtis-Wright Corporation 04/27/2009 Email from J.Ritter to J.Grobbelar and J.Julius cc R.Best Re PI SDP simulator runs discussing HELB event large break flow and predicted flooding effects on the turbine building and the component cooling system PROP00000262 5/8/2009 Curtis-Wright Corporation 05/08/2009 Email from J.Ritter to J.Grobbelaar and R.Best re MAAP scenarios-analyses of the effects of tornado and HELB events.

PROP00000263 2/22/2009 Curtis-Wright Corporation 02/22/2009 Email from D.Malek to R.Best re RMU HEP discussion of valve closure and HELB event situations PROP00000264 2/22/2009 Curtis-Wright Corporation 02/22/2009 Email from Robust to D.Malek re RMU HEP discussion of valve closure and HELB event situations PROP00000265 5/8/2009 Curtiss-Wright Corporation 05/08/2009 Email from J.Ritter to J.Grobbelaar and R.Best re discussion of simulator case runs including some that include HELB conditions PROP00000266 5/8/2009 Curtiss-Wright Corporation 05/08/2009 Email from J.Grobbelaar to J.Ritter and R.Best re HEP data updated to include tornado simulation/data PROP00000267 5/8/2009 Curtiss-Wright Corporation 05/08/2009 Email from J.Grobbelaar to J.Ritter and R.Best re HEP data updated to include tornado simulation/data PROP00000268 5/8/2009 Curtiss-Wright Corporation 05/08/2009 Email from J.Ritter to J.Grobbelaar and R.Best re HEP data updated to include tornado simulation/data PROP00000269 5/8/2009 Curtiss-Wright Corporation 05/08/2009 Email from J.Ritter to J.Grobbelaar and R.Best re discussion and analysis or modeling of the effects tornadic and seismic events on the component cooling system.

PROP00000270 5/8/2009 Curtiss-Wright Corporation 05/08/2009 Email from J.Grobbelaar to J.Ritter and R.Best re HEP data updated to include tornado simulation/data PROP00000271 5/8/2009 Curtiss-Wright Corporation 05/08/2009 Email from J.Grobbelaar to J.Ritter and R.Best re HEP data updated to include tornado simulation/data PROP00000272 5/7/2009 Curtiss-Wright Corporation 05/08/2009 Email from J.Grobbelaar to J.Ritter and R.Best re HEP data updated to include tornado simulation/data 3

Document Date Entity Claiming Protected Description Number Status PROP00000273 5/7/2009 Curtiss-Wright Corporation 05/07/2009 Email from J.Grobbelaar to J.Ritter and R.Best re HEP data updated to include tornado event simulation/data PROP00000274 5/7/2009 Curtiss-Wright Corporation 05/07/2009 Email from J.Ritter to J.Grobbelaar cc: R.Best re HEP data updated to include tornado simulation/data PROP00000275 5/7/2009 Curtiss-Wright Corporation 05/07/2009 Email from J.Ritter to J.Grobbelaar cc: R.Best re HEP data updated to include tornado simulation/data PROP00000276 5/7/2009 Curtiss-Wright Corporation 5/7/2009 Email from J. Grobbelaar to J. Ritter and R. Best re HEP data updated to include tornado simulation/data PROP00000277 5/7/2009 Curtiss-Wright Corporation 5/7/2009 Email from J. Grobbelaar to J. Ritter and R. Best re HEP data updated to include tornado simulation/data PROP00000278 6/18/2009 Curtiss Wright Corporation Email from J. Ritter to J. Julius at Curtiss Wright, E. Kranz, and R. Rohrer re: Analysis for CC/HELB SDP PROP00000279 6/17/2009 Curtiss Wright Corporation Email from J. Ritter to J. Grobbelaar and J. Julius at Curtiss Wright, E. Krantz, and R. Rohrer re: Analysis for CC/HELB SDP PROP00000280 6/15/2009 Curtiss Wright Corporation Email from J. Grobbelaar at Curtiss Wright to J. Ritter, J.

Julius, E. Kranz, and R. Rohrer re: Analysis for CC/HELB SDP PROP00000281 2/27/2009 Curtiss Wright 2/27/2009 email from J. Ritter to K. Vincent re: Comments on CC/HELB HRA Report PROP00000282 2/27/2009 Curtiss Wright 2/27/2009 email from J. Ritter to J. Grobbelaar re: Comments on CC/HELB Report PROP00000283 2/26/2009 Curtiss Wright Comments on CC/HELB HRA Report PROP00000284 6/19/2009 Curtiss Wright Corporation Email from J. Julius at Curtiss Wright to J. Ritter, E. Kranz, and R. Rohrer re: Analysis for CC/HELB SDP PROP00000285 6/17/2009 Curtiss Wright Corporation Email from J. Julius at Curtiss Wright to J. Ritter and E. Kranz re: Analysis for CC/HELB SDP PROP00000286 5/15/2009 Curtiss Wright Corporation Email from J. Ritter to J. Grobbelaar and J. Julius at Curtiss Wright and R. Best re: comments on SDP procedure PROP00000287 5/20/2009 Curtiss Wright Corporation Email from J. Ritter to J. Grobbelaar and J. Julius at Curtiss Wright, R. Best, and K. Kohlhepp re: comments on procedure PROP00000288 5/15/2009 Curtiss Wright Corporation Email from J. Ritter to J. Grobbelaar and J. Julius at Curtiss Wright, R. Best, and K. Kohlhepp re: comments on procedure 4

Document Date Entity Claiming Protected Description Number Status PROP00000289 5/14/2009 Curtiss Wright Corporation Email from J. Ritter to J. Grobbelaar and J. Julius at Curtiss Wright and R. Best re: comments on procedure PROP00000290 5/13/2009 Curtiss Wright Corporation Email from J. Ritter to J. Grobbelaar and J. Julius at Curtiss Wright and R. Best re: comments on procedure PROP00000291 5/13/2009 Curtiss Wright Corporation Email from J. Ritter to J. Grobbelaar and J. Julius at Curtiss Wright and R. Best re: comments on procedure PROP00000292 3/4/2009 Curtiss Wright Corporation Email from J. Ritter to J. Grobbelaar at Curtiss Wright re:

comments on CC/HELB HRA report PROP00000293 3/1/2009 Curtiss Wright Corporation Email from J. Ritter to J. Grobbelaar at Curtiss Wright re:

comments on CC/HELB HRA report PROP00000294 2/27/2009 Curtiss Wright Corporation Email from J. Ritter to J. Grobbelaar at Curtiss Wright re:

comments on CC/HELB HRA report PROP00000295 2/27/2009 Curtiss Wright Corporation Email from J. Ritter to J. Grobbelaar at Curtiss Wright re:

comments on CC/HELB HRA report PROP00000296 2/27/2009 Curtiss Wright Corporation Email from J. Ritter to J. Grobbelaar at Curtiss Wright re:

comments on CC/HELB HRA report PROP00000297 2/27/2009 Curtiss Wright Corporation Email from J. Ritter to J. Grobbelaar at Curtiss Wright re:

comments on CC/HELB HRA report PROP00000298 2/27/2009 Curtiss Wright Corporation Email from J. Ritter to J. Grobbelaar at Curtiss Wright re:

comments on CC/HELB HRA report PROP00000299 2/26/2009 Curtiss Wright Corporation Email from J. Ritter to J. Grobbelaar at Curtiss Wright and D.

Malek re: comments on CC/HELB HRA report PROP00000300 2/24/2009 Curtiss Wright Corporation 2/24/2009 Email from J. Ritter to J. Grobbelaar at Curtiss Wright and D. Malek re: comments on CC/HELB HRA report PROP00000301 2/27/2009 Curtis Wright Corporation Email from J. Ritter to T. Borgen, T. Strain, T. Bacon, and B.

Slack re: comments on CC/HELB HRA report PROP00000302 2/26/2009 Curtiss Wright Corporation Email from J. Ritter to T. Bacon re: comments on CC/HELB HRA report PROP00000303 2/27/2009 Curtiss Wright Corporation Email from K. Vincent to J. Ritter re: comments on CC/HELB HRA report PROP00000304 2/27/2009 Curtiss Wright Corporation Email from K. Vincent to T. Borgen, T. Strain, T. Bacon, J.

Ritter, and B. Slack re: comments on CC/HELB HRA report 5

Document Date Entity Claiming Protected Description Number Status PROP00000305 2/27/2009 Curtiss Wright Corporation Email from T. Strain to T. Bacon, J. Ritter and T. Borgen re:

comments on CC/HELB HRA report PROP00000306 3/8/2009 Curtiss Wright Corporation Email from D. Malek to J. Ritter re: comments on CC/HELB HRA report PROP00000307 2/27/2009 Curtiss Wright Corporation Email from T. Borgen to T. Strain, T. Bacon, J. Ritter, and K.

Vincent re: comments on CC/HELB HRA report PROP00000308 4/20/2009 Curtiss Wright Corporation Email from C.J. Sansome to J. Ritter re: control room heat-up calculations PROP00000309 4/20/2009 Curtiss Wright Corporation Email from C.J. Sansome to J. Ritter re: control room heat-up calculations PROP00000310 4/10/2009 Curtiss Wright Corporation Email from C.J. Sansome to J. Ritter re: control room heat-up calculations PROP00000311 4/9/2009 Curtiss Wright Corporation Email from C.J. Sansome to J. Ritter, M. Brossart, J. Connors, and S. Ford re: control room heat-up calculations PROP00000312 4/8/2009 Curtiss Wright Corporation Email from C.J. Sansome to J. Ritter and M. Brossart re:

control room heat-up calculations PROP00000313 4/13/2009 Scientech/Curtiss-Wright 4/13/2009 Email from R. Rohrer to E. Krantz of Scientech and J. Ritter re modeling heat loads to control room PROP00000314 2/17/2009 Curtiss-Wright 2/17/2009 Email from J. Ritter to J. Grobbelaar at Curtiss Wright re Operator actions following HELB PROP00000315 2/19/2009 Excel Nuclear Energy 02/23/2009 Email from J Ritter to T Asmus re HEP analysis PROP00000316 unknown INPO Radioactive Material Shipment Exceeds DOT Limits PROP00000317 unknown INPO Radioactive Material Shipment Exceeds DOT Limits PROP00000318 1987/1988 Westinghouse Tables and Report from Jeumont Industries and Westinghouse re: O-ring testing PROP00000319 10/13/2009 APS Email from E. Sonn with APS to J. Connors & F. Lake w/

others cc'd re evaluation of RCE report PROP00000320 10/9/2009 APS Email from J. Connors to E. Sonn w/ F. Lake cc'd re RCE report PROP00000321 10/8/2009 APS Email from E. Sonn with APS to J. Connors w/ others at APS cc'd re Drafting of RAS and RCE reports 6

Document Date Entity Claiming Protected Description Number Status PROP00000322 10/6/2009 APS Email from C. Lethgo to J. Connors w/ N. Adams cc'd re PVNGS contact information and drafting of RCE and RAS reports PROP00000323 10/5/2009 APS Email from E. Sonn with APS to J. Connors & S. Myers with others at APS cc'd re E&CF Chart PROP00000324 10/2/2009 APS Email from E. Sonn at APS to J. Connors and others at PINGP and APS, with others at APS cc'd re E&CF Charts PROP00000325 10/2/2009 APS Email from T. McCloud with APS to S. Myers & S. Scow with others cc'd re E&CF Chart drafting techniques PROP00000326 3/21/2009 EPRI EPRI Heat Stress Analysis for CA 01093329-04 PROP00000327 3/21/2009 EPRI EPRI Heat Stress Analysis for CA 01093329-04 PROP00000328 8/4/2009 INPO 8/4/2009 INPO operating experience database report dated 3/28/2005 subject OE20291 - The Condensate Makeup Line to AFW Pumps is Vulnerable to a FW Line Break PROP00000329 8/4/2009 INPO 8/4/2009 INPO operating experience database report dated 12/20/2006 subject OE23897 - update to OE20291 - The Condensate Makeup Line to AFW Pumps is Vulnerable to a FW Line Break - Kewaunee PROP00000330 8/4/2009 INPO 8/4/2009 INPO operating experience database report dated 10/8/2008 subject OE27559 - Component Cooling (CC) piping adjacent to high energy line break (HELB) location in the turbine building (Prairie Island)

PROP00000331 8/4/2009 INPO 8/4/2009 High Energy Line Break Could Result in a Condition Outside Design Basis of Auxiliary Feedwater PROP00000332 8/4/2009 INPO 8/4/2009 INPO operating experience database report dated 10-25-1999 subject Cook - Plant Event #36335 re: several plant locations discovered to be unprotected HELB areas PROP00000333 undated INPO Memo captioned 1.0 Operating Experience, with section 1.0.2 entitled Industry Experience detailing several industry operating experiences closely linked to the issue of a HELB accident causing the failure of the Component Cooling system found by searching the INPO website.

PROP00000334 6/7/2004 Xcel 6/7/2004 Design Basis Document regarding determination about CC safety valve at PINGP.

7

Document Date Entity Claiming Protected Description Number Status PROP00000335 7/10/2010 Xcel 6/7/2004 Design Basis Document regarding determination about CC safety valve at PINGP.

PROP00000336 3/20/2009 IEPSON 3/20/2009 report from IEPSON regarding, inter alia, CC pumps at PINGP.

PROP00000337 6/20/2010 Xcel Energy Internal Communication from M. Schimmel to PINGP Managers and Supervisors re: follow up to February directive re: site priorities PROP00000338 2/15/2010 Xcel Energy 2/15/2010 Internal Communication from M. Schimmel to PINGP Plant Managers and Supervisors re: clarification of the station's priorities PROP00000339 12/12/2008; WMG, Inc. and PINGP 12/16/2008 Email from C. Sweet to S. Derleth re consultants 12/15/2008 providing technical support for Radioactive Material Shipping Program PROP00000340 1999 Performance Improvement Survey questions and results International PROP00000341 10/31/2005 Sargent & Lundy, LLC Report on Component Cooling System SR/NSR Boundary PROP00000342 n/a INPO Event Description re Potential for HELB in CC system 8

ATTACHMENT 3 Northern States Power Co.

Prairie Island Nuclear Generating Plant, Units 1 and 2 License Renewal Proceeding Docket Nos. 50-282-LR, 50-306-LR; ASLBP No. 08-871-01-LR Privilege Log for NSPMs First Supplemental Disclosures Regarding Safety Culture Contention (June 30, 2010)

Document Document Date Author/Sender Recipient CC Subject Privilege Number Type Asserted1 PRIV00000072 Report 8/17/2009 unknown n/a n/a Action Request Report quoting INPO SCA finding PRIV00000073 Report 1/13/2010 unknown n/a n/a Action Request Report: May 2003, SCA INPO Evaluation 1

SCA=Self-Critical Analysis Privilege 1