ML053070307

Crait Issues

ML053070307
Person / Time
Site:	Davis Besse
Issue date:	06/11/2002
From:	- No Known Affiliation
To:	Office of Nuclear Reactor Regulation
References
Download: ML053070307 (55)

Text

CR4ZT Zssues Tracking Issue Category/ CR Initiated Number Date Issite ECD GrouPlaad Response Status and Number CRAIT-0001 3/13/2002 Root Cause Team List of lnterviewees 3/14/2002 Request Provided a list of Personnel Interviewed Closed No dated 3114/02 0657 (See CRAIT-0036 Field Activity for updates) N/A Steve Loehlein NRC - Ron Gardner Chuck Ackerman CRAIT-0002 3/13/2002 Root Cause Team Time Line 3/13/2002 Request Provideda copy of the CRDM Sequence Closed No Root Cause Team Time Line (Electronic of Events (Hard Copy) dated 3/13/02 Copy) - Electronic Copy requested by NRC Root Cause (Approximately 10:30 AM). N/A Doug Simpkins. Steve Loehlein Provideda copy of the CRDM Sequence of Events (Electronic Copy) dated 3/13/02 (Approximately 17:30 AM).

(See CRAIT-0050for updates)

NRC - Ron Gardner Chuck Ackerman CRAIT-0003 3/13/2002 Requested Regulatory Timeline For Boric Acid 3/13/2002 Request Information listed in Ref Docs provided. Closed No Control (Me1 Holmberg): This request includes relevant regulatory Information Notices, External N/A Bulletins, and Generic Letters with either Interface internal and/or external plant responses: IEB R. J. Slyker 01-01, GL 88-05, GL 97-01 etc..

NRC - Me1 Holmberg R. J. Slyker CRAIT-0004 3/13/2002 Provide a copies of informationthat the Root 3/13/2002 Request The reference documents listed below Closed No Cause Team has gathered for the were provided to the NRC over the last investigation of wastage near CRD Nozzle 3. External week. See the individual document N/A Interface entty in Reference Documents for D. L. Miller detailed descriptions of the documents.

Completed on 3/19/02 NRC - Ron Gardner Dale Miller I:

6/11/2002 9:23:39 AM Page I of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouPlaad Response Status and Number CRAIT-0005 3/13/2002 Provide copies of videos of head visual 3/13/2002 Request Videos from visual inspections of the Closed No inspections head available from RFO 10, RFO11, External RFOl2 and RFO 13 provided (see NIA Interface reference documents for list)

D. L. Miller NRC - Ron Gardner D. L. Miller CRAIT-0006 3/13/2002 What is the plan for eroded area of # 2 nozzle 3/14/2002 Question A replica of the nozzle 2 and cavity Closed No areas would be very useful in assessing Root Cause pitting or cracking of these areas. N/A Steve Loehlein However, this would be fairly dose intensive, without providing significant additional information. On the other hand, the root cause team feels that to assess the wastage conditions associated with nozzle 2, videotaped information, followed by dental impression(s)will adequately provide the necessary data for assessment of the conditions. An integrated plan for inspection and evaluation of the nozzle

1. 2 location is currently being formulated. This will be provided to the AIT and NRR for review and approval prior to implementation. (See CRAIT-0074)

NRC - Me1 Holmberg Steve Fyfitch CRAIT-0007 311312002 The Davis-Besse Nuclear Power Station 311a2002 Voluntary Davis-BesseNuclear Power Station Closed No Control Rod Drive Mechanism Nozzle Control Rod Drive Mechanism Nozzle Information Book was voluntarily handed out ~ External Information Book was given to the AIT N/A to each member of the AIT durring the Interface on 3112/02 entrance on 3112/02. M. A. Riemer /

K. A. Spencer Aaron Bless 6/11/20029:23:40AM Page 2 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouPihad Response Status and Number CRAIT-0008 3/13/2002 Provide Information Notice and response for: 3/14/2002 Request Provided documents to NRC AIT on Closed No IN 90-010 3114/02.

IN 94-063 ~ External- NIA IN 96-011 Interface R. J. Slyker NRC - Me1 Holmberg R. J. Slyker CRAIT-0009 3/13/2002 What are the plant staffs plans for nozzle #2? Question Discussion was held between Me1 Closed No And what are the data gathering plans? Holmburg with Ron Gardner and Jim Cause Davis in attendance on the Root Cause N/A (See CRAIT-0074 also) Steve Loehlein teams scope and activities in regards to nozzle #2 removal plans and failure anaylsis data. (CRAIT-0074tracks plan developement)

Response: On-going discussions are being held with plant management. The management oversight continually challenges the root cause team with the same interests. The root cause team is comparing the wastage information between nozzle #3 and nozzle #2, however no specific actions are being taken or planned at this time. The team is also concerned with balancing retrieval of all the available data is being collected while ensuring data is not destroyed and no damage to the reactor head occurrs. Also the increased dose associated with the second nozzle removal must be considered as part of the scope.

NRC - Me1 Holmberg Steve Loehlein 6/11/2002 9:23:40 AM Page 3 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD Group/Lead Response Status and Number CRAIT-0010 3113/2002 Mr. Holmberg called and asked if a film 3/15/2002 Question The root cause has consideredthis Closed No surface replication was going to be performed technique and as similarly noted in for the CR Nozzle #3 cavity? The technique Root Cause CRAIT-0006, the team feels that N/A uses a softened acetate film, pressed unto the Steve Fyfitch videotaped information, followed by surface of the cavity which is removed and laser and mechanical measurements scanned by an electron scanning microscope. and subsequent dential impression(s)

Is this being considered? will adequately provide the necessary data for assessment of the conditions.

Should we use scanning electron microscope An integrated plan for inspection and film to take impressions of the nozzle 2 and evaluation of the nozzle #3 location has cavity areas. Per AIT this may help been formulated. This will be provided distinguish between impingement and to the AIT for review. NRR has already corrosion reviewed and approved the plan.

Results are currently being made available to the root cause team.

NRC - Me1 Holmberg Steve Fyfitch CRAIT-0011 3113/2002 Me1 Holmberg's request is to be provided the Request Action Plan Results IAW WO 02-001917- Closed No results of any step of the inspection and 000 sampling plan. Save debris that is vacuumed Field Activity N/A up following removal of insulation. Inspection Mark Mc-aughlin 1) RP removed debris from around and Sampling Plan step #2. nozzle 2. Stored 21/2 bags that are 5' diameter by 2' long.

2. Decontaminationand area cleanup. Use 2) 2 bags of cloth (weld blankets) and 2 only a clean vacuum cleaner, no liquids or bags of insulation (previously removed wiping (save the debris that is vacuumed as from the work platform) were stored in a samples). black barrel. It is located in the locked hi-radiation area north of the reactor headstand on the 623' elevation. All bags are labeled 3-13-02 @ 1930 prior to data gathering.

NRC - Me1 Holmberg Dale Miller 6/11/2002 9:23:40 AM Page 4 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouP/aad Response Status and Number CRAIT-0012 3/13/2002 Me1 Holmberg's request is to be provided the Request Video, "Root Cause Video of Nozzle #3 Closed No results of any step of the inspection and and Adjacent Nozzles, 3/13/02 - PM to sampling plan. Inspection and Sampling plan Field 3/14/02 - AM completed and provided to N/A step #3. Mark McLaughlin the NRC (DB tape #A-2.)

3. Video examinationwith audio dubbing of Action Plan Results IAW WO 02-001917-nozzle #3 cavity from top looking for general 000 extent of corrosion; evidence of flow across clad and base metal surface; and evidence of During the entire video taping of Nozzle possible impingementof steam jet on 3, there appeared to be no cavities or surfaces. Look also for any packed boron divots that still contained caked in boron deposits, and cavity underhangs. deposits. Loose boron and Characterizethe deposits as to size and miscellaneous debris from the insulation color. Do not remove any material at this time. removal process, that was not vacuumed out when step 2 of the QAISP was performed, can be seen in the areas where the sides of the cavity intersect the remaining J-groove weld.

Thus there was no boron to characterize. Also, during the entire video review of the nozzle #3 cavity, there were no cavity surface irregularitiesobserved that would be indicative of steam cutting. All the surface irregularities were indicative of what you would expect from metal that has been eaten away.

The sides of nozzle #3 cavern were relatively clean and the white areas seen in the earlier video were not boron, but metallic color. The cavern appears to go all the way back to nozzle #11.

NRC - Me1 Holmberg Dale Miller 6/11/2002 9:23:40 AM Page 5 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrOuPlhad Response Status and Number CRAIT-0013 3/13/2002 Me1 Holmbergs request is to be provided the Request Action Plan Results IAW WO 02-001917- Closed No results of any step of the inspection and 000 sampling plan. Inspection and Sampling plan Field Activity N/A step #4 Mark McLaughlin Video Name: Root cause analysis top of insulation exam around #3, under

4. Video examination (of the top of the flange, top of head. (DB Tape #A4) insulation) with audio dubbing down the four lanes surrounding nozzle #3, looking for any remaining boron residue. (See attached sketch) Review video to determine if boron samples are available. Characterize the samples (size, color, etc.) and identify location. If available, obtain these in step 7.

NRC - Me1 Holmberg Dale Miller CRAIT-0014 3/14/2002 Me1 Holmbergs request is to be provided the Request Action Plan Results IAW WO 02-001917- Closed No results of any step of the inspection and 000 sampling plan. Inspection and Sampling plan Field Activity N/A step #7 Mark McLaughlin Bags of boron samples located on level 623 in black barrel north of reactor head

7. Remove any boron samples that may exist stand. Each bag is marked 3-14-02 above and below the insulation, particularly 0600, scrapped @ nozzle #1, 3-14-02 those which would have been tightly adherent 0600 scrapped 0 nozzle #2, and 3 to the surface of the RV head (making note of 02 0600 in vacuum bag.

this). The location of any samples shall be carefully mapped and characterized (important physical information includes color, size, shape, and adherency). Store in a clean bagkontainer.

a. At nozzle #1

b. At nozzle #2

c. At nozzle #3 cavity

d. Top of head NRC - Me1 Holmberg Dale Miller 6/11/2002 9:23:40 AM Page 6 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrOuPlbad Response Status and Number CRAIT-0015 3/14/2002 Root Cause Team Timeline Excel File 3/14/2002 Request Provided NRC - Doug Simpkins an Closed No electronic copy of Sequence of Events (to provide a corrected copy of AITRD-0155) Root Cause file updated on 3/14/02. None Steve Loehlein (See CRAIT-0050 for updates)

NRC - Doug Simpkins Aaron Bless CRAIT-0016 3/14/2002 Talk with Steve Hunt about Boric Acid 3/14/2002 Interview Duplicate item - see CRAIT-0026for Closed No Corrosion Root Cause Strategy. closure Root Cause N/A Steve Loehlein NRC - Me1 Holmberg Dale Miller CRAIT-0017 3/14/2002 Me1 Holmberg's request is to be provided the Request Action Plan Results IAW WO 02-001917- Closed No results of any step of the inspection and 000 sampling plan. Inspection and Sampling plan Field Activity N/A step #5 Mark McLaughlin Video , "Root Cause Video Of Nozzle #3 and Adjacent Nozzles, 3/13/02 - PM to

5. Video examination of nozzle #1 (360 3114/02 - AM completed and provided to degrees around nozzle) with audio dubbing, the NRC (DB Tape #A2) looking for signs of wastage around the nozzle to RV head interface.

NRC - Me1 Holmberg Dale Miller CRAIT-0018 311412002 Me1 Holmberg's request is to be provided the Request Action Plan Results IAW WO 02-001917- Closed No results of any step of the inspection and 000 sampling plan. Inspection and Sampling plan Field Activity N/A step #6 Mark McLaughlin Video, "Root Cause Video Of Nozzle #3 and Adjacent Nozzles, 3/13/02 - PM to

6. At nozzle #2, video examination with audio 3/14/02 - AM completed and provided to dubbing from the top looking for evidence of the NRC (DB Tape #A2) wastage (360 degrees around the nozzle).

NRC - Me1 Holmberg Dale Miller 6/11/2002 9:23:40 AM Page 7 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD Group/Lead Response Status and Number CRAIT-0019 3/14/2002 Me1 Holmberg's request is to be provided the Request Action Plan Results IAW WO 02-001917- Closed No results of any step of the inspection and 000 sampling plan. Inspection and Sampling plan Field Activity N/A step #8 Mark McLaughlin Video, "Root Cause Video of Nozzle #3 and Adjacent Nozzles, 3/13/02 - PM to

8. Video examination of nozzle #2, after 3114/02 - AM completed and provided to sample removal, as performed in Step 6. the NRC (DB Tape #A2)

NRC - Me1 Holmberg Dale Miller CRAIT-0020 3/14/2002 Me1 Holmberg's request is to be provided the Reauest Action Plan Results IAW WO 02-001917- ODen No results of any step of the inspection and 000 sampling plan. Inspection and Sampling plan Field Activity N/A step #9 Mark McLaughlin Boron sample retrieved from nozzle #2 in location between nozzles #9 and #21.

9. Any signs of wastage between nozzle #2 Samples were placed in a small bag and and the penetration should be characterized stored in a black barrel north of the by feeler gauge measurements (or whatever reactor headstand. Feeler gage method is most practical) to establish the readings cannot be taken until more width and depth of the cavity. If possible, insulation is removed.

retrieve samples from the nozzle #2 cavity.

Characterize them (important physical information includes color, size, shape, and adherency).

Note: If the above examination shows that the areas of wastage on the top and bottom of the vessel head are not vertically aligned, the Root Cause Team should be notified immediately to determine if further examination is required.

NRC - Me1 Holmberg Dale Miller 6/11/2002 9:23:40 AM Page 8 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouP/bad Response Status and Number CRAIT-0021 311412002 Me1 Holmberg's request is to be provided the Request Action Plan Results IAW WO 02-001917- Closed No results of any step of the inspection and ~-000 sampling plan. Inspection and Sampling plan Field Activity NIA step #10 Mark Mcbughlin Performed laser profile utilizing FTl's equipment around nozzle #3 from the

10. Laser profile of corroded area around top of the service structure. The data nozzle #3. was sent to Lynchburg via the T1 line. A model was generated and copies of the model were downloaded to Lynchburg design engineering for use in finite element modeling conducted in Lynchburg. The model data has also been supplied to nozzle # 3 engineering team on site at Davis-Besse.

NRC - Me1 Holmberg Dale Miller CRAIT-0022 3/14/2002 Me1 Holmberg's request is to be provided the Request Action Plan Results IAW WO 02-001917- Closed No results of any step of the inspection and 000 sampling plan. Inspection and Sampling plan Field Activity N/A step #11 Mark McLaughlin An inspection found a material void at the interface of Nozzle #3 and the

11. Take dimensions of corroded area around vessel head. The void on the downhill nozzle #3 using the reference tool to fully side of Nozzle #3 extends approximately characterizethe cavity area. 6 inches towards Nozzle #11 and is approximately 5 inches wide at the widest part (a triangular shape). At the back of the void, there is some undercutting that is about 1 112 inches tall and approximately 2 inches from nozzle #11. There is approximately 8 inches between Nozzle #3 and Nozzle

1. 11. The walls of the cavity are steep with a 75 to 90 degree angle. The void is equivalent to 40 pounds of carbon steel.

The axial flaws were about 3 inches long with approximately 1.2 inches above the weld.

NRC - Me1 Holmberg Dale Miller 6/11/2002 9:23:40 AM Page 9 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouPIaad Response Status and Number CRAIT-0023 3/14/2002 Me1 Holmberg's request is to be provided the Reauest Action Plan Results IAW WO 02-001917- Closed No results of any step of the inspection and 000 sampling plan. Inspection and Sampling plan Field Activity N/A step #12 Mark McLaughlin A measurement reference tool and cladding measurement tool was

12. Take thickness measurementsof the fabricated to facilitate data gathering.

cladding with dial caliper (approximately2 M&TE DD10014 Cal due date 08-02-02.

inches outward from the nozzle bore). Dimensions taken by Walt Query on 3-15-02 NRC - Me1 Holmberg Dale Miller CRAIT-0024 3/14/2002 Request for informatin on Containment Air 3/14/2002 Request Provided NRC - Doug Simpkins a copy Closed No Cooler Cleaning prior to 1998 and also where of PCAQR 92-0072 and a copy of CAC was this information captured prior to NOMS? External Cleaning History document written by None Interface Jon Otermat.

Aaron Bless NRC - Doug Simpkins Aaron Bless CRAIT-0025 3/14/2002 Request for informatin on Rad Monitor Alarms 3/14/2002 Request I stated to NRC - Doug Simpkins that Closed No prior to 1998 and also where was this prior to 1998 (prior to NOMS) that information captured prior to NOMS? External information (filter change on Radiation None Interface Monitors) was kept manually in hand Aaron Bless written log books, and that the most accurate computer search that could be performed is an NRM records search for these past RO Logs. After the RO Logs were obtained an individual would have to read through the logs to obtain dates of filter changes performed on Radiation Monitors. I also stated that there have been other manual logs kept, however the RO Logs would be the most accurate. He requested no additional information.

NRC - Doug Simpkins Aaron Bless 6/11/2002 9:23:40 AM Page 10 of 55

Tracking Zssue Category/ CR Initiated Number Date Issue ECD Group/Lead Response Status and Number CRAIT-0026 3/13/2002 NRC Interview with Root Cause Team 311412002 Interview Technical discussion on Root Cause Closed No member Steve Hunt, Dominion Engineering Team's approach to the Boric Acid External corrosion issue and how the team N/A Interface derived their approach. The Root Cause Dave Gudger Team Timeline of Events was shared with the NRC to facilitate this discussion. Additionally, discussed was the teams approach to sample requests and evidence control. The Evidentuary Request List was use to facilitate this point, which this list provides greater detail than the Integrated Investigation Team Daily StatuslPlan. The NRC requested copies of this information.

Evideciary List (rev 4) and Timeline (Rev

3) were provided.

NRC - Me1 Holmberg Steve Hunt CRAIT-0027 311412002 NRC Interview with Mike Hacker, UT-Level 111 3/14/2002 Interview Technical discussion with Me1 Holmburg Closed No Framatome ANP expert. ~

and James Davis on explanation of the External UT examination and signature N/A Interface charactization results. The Davis Besse Dave Gudger 13RFO CRDM Nozzle Examination Report dated March 11, 2002, Revision 1 was utilized and a page by page review was conducted with emphasis on understanding characterizationresults and differentiation details. Revision 1 of the UT report was provided to NRC.

NRC James Davis Mike Hacker CRAIT-0028 3/14/2002 Briefing from Mark McLaughlinon Data 3/15/2002 Interview Duplicate item - Refer to CRAIT-0032 Closed No Gathering Plan Items #15 and #16. for resolution.

External N/A Interface Dave Gudger NRC - Me1 Holmberg Dale Miller 6/11/2002 9:23:41 AM Page 11 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouPlhad Response Status and Number CRAIT-0029 3/14/2002 Requested copy of EPRl Guidelines on Boric 3/14/2002 Request NMAC Boric Acid Corrosion Guidebook Closed No Acid Corrosion Control External EPRl Boric Acid Corrosion Guidebook, N/A Interface Revision 1 Dale Miller Both books provided to the NRC New copy of Rev 1 provided to the NRC 3/18 including Appendix.

NRC - Me1 Holmberg Dale Miller CRAIT-0030 3/14/2002 Requested RPV Head 12 RFO Inspection 3/15/2002 Request Color Copy of RPV Head 12 RFO Closed No Results (Color Copy) - Inspection Results Diagram, External one color copy sheet from Serial 2744. N/A Interface Dave Gudger NRC - Me1 Holmberg Dave Gudger CRAIT-0031 3/14/2002 Reauested CODV of characterization of 3/15/2002 Reauest Color CODY of the Dicture/diaaram ItOD Closed No wastage area %rounding nozzle penetration #3 down view) with bbttom up UT data '

External sheet provided. N/A Interface Dave Gudger NRC - Me1 Holmberg Dave Gudger CRAIT-0032 3/14/2002 Requested Interview with Mark McLaughlin to 3/15/2002 Interview Discussion was held with Me1 Holmberg Closed No discuss Quarantine Area Inspection and and Jim Davis over the Quarantine Area Sampling Plan: Items #15 and #16. Fie'd Activity Inspection and Sampling Plan Items #15 N/A MarkMcLiughG and #16, as well as Nozzle #2 plan.

Draft plan provided for Nozzle 2.

(CRAIT-0074 tracks Nozzle 2 plan developement)

NRC - Me1 Holmberg Dave Gudger 6/11/2002 9:23:41 AM Page I 2 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GroUP/bad Response Status and Number CRAIT-0033 311512002 Update Root Cause Team Timeline Request Provide daily updates of Root Cause Open No Timeline (Loehlein)

External N/A Interface Timeline of Key Events Related to On-Going Reactor Vessel Head Boric Acid Wastage - Rev. 4, 3/14/02 to NRC 3114/02 Timeline of Key Events Related to Reactor Vessel Head Boric Acid Wastage. Rev. 5, 3/15/02 to NRC 3116/02 Timeline of Key Events Related to Reactor Vessel Head Boric Acid Wastage. Rev. 6, 3/22/02 to NRC 3/22/02 NRC - Ron Gardner Dave Gudger CRAIT-0034 311512002 Update Quarantine Area Inspection and Request Provide daily updated Quarantine Area Open No Sampling Plan Inspection and Sampling Plan (Dale Wuokko) N/A Interface On-Going Quarantine Area Inspection and Sampling Plan dated 3/13/02 to NRC 3115/02.

Quarantine Area Inspection and Sampling Plan dated 3/15/02 to NRC 3115/02.

Quarantine Area Inspection and Sampling Plan With Reactor Head Nozzle Diagram dated 3/15/02 to NRC 3116/02.

NRC - Ron Gardner 6/11/2002 9:23:41 AM Page 13 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GroUPIbad Response Status and Number CRAIT-0035 311512002 Update of Root Cause Team Evidentuary List Request Integrated Plan to Inspect and Evaluate Open No (Loehlein) Nozzle #2 Before and After Removal

~xternal- Rev 3/14/02 2:4i PM to NRC 311 a NIA Interface On-Going Examinationof CRDM Nozzle #3 dated 3112 to NRC 311 a Integrated Plan (Field/Engineering/Root Cause) To Inspect and Evaluate Nozzle

1. 2 Before and After Removal dated 311 5/02 to NRC 311 8/02 NRC - Ron Gardner Dale Miller CRAIT-0036 3/15/2002 Update Root Cause Team Interview List Request Provide daily updated Root Cause Team Open No Interview List (Ackerman)

ExternaI N/A Interface New Personnel Interviewed List dated On-Going 3114/02 to NRC 3114/02 New Personnel Interviewed List dated 3/15/02 to NRC 3/15/02 New Personnel Interviewed List dated 3116/02 to NRC 3116/02 New Personnel Interviewed List dated 311 8/02 to NRC 311 8/02 Personnel Interviewed List dated 3119 (a:42 AM) to NRC 3119/02 Personnel Interviewed List dated 3/21 (7:14 AM) to NRC 3/21/02 NRC - Ron Gardner

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouPibad Response Status and Number CRAIT-0037 3/14/2002 NRC Interview with Andrew Siemaszko, Davis- 3/15/2002 Interview RCS system engineer provided overview Closed No Besse RCS System Engineer - of the head leakage and cleanup effort External history. N/A Interface Dave Gudger NRC - Me1 Holmberg Andrew Siemaszko CRAIT-0038 3/13/2002 Root Cause Team (Chuck Ackerman) Request Documents provided to the Root Cause Closed No requested the following documents: Team and the NRC AIT on 3/14/02.

PCAQ 1998-0013 External N/A PCAQ 1988-0496 Interface PCAQ 1996-0650 R. J. Slyker PCAQ 1994-0912 PCAQ 1988-0494 PCAQ 1994-0195 CR 1998-0020 CR 2000-1210 CR 2000-4138 CR 2000-0039 SEN 6 SEN 18 IN 86-108 Supp 1,2,3 Root Cause Team R. J. Slyker CRAIT-0039 3/15/2002 NRC Interview with Ed Chimahusky, Davis- 3/15/2002 Interview RCS system engineer provided overview Closed No Besse Former RCS System Engineer of the head leakage and cleanup effort External history during the time as system N/A Interface engineer.

Dave Gudger NRC - Me1 Holmberg Ed Chimahusky 6/11/2002 9:23:41 AM Page 15 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrollPlkad Response Status and Number CRAIT-0040 3/15/2002 Ron Gardner requested the following 3/16/2002 Request Copy of PCAQ 89-0058 previously Closed No documents: provided to NRC on 3/14/02.

External N/A PP 1102.10 - copy when walkdown was put Interface Provided copies of SO 87-15, NG-EN-into procedure. Also current copy of R. J. Slyker 00324 R02, PP-1102.10 R16; DB-OP-procedure (which is now DB-OP-06903). 06903 R5 Standing Order 87-15 NG-EN-00324 RO/C2 and R1/C2 complete copies to NRC 3/19/02 NG-EN-00324 PCAQR 89-0058 NRC - Ron Gardner R. J. Slyker CRAIT-0041 3/15/2002 Chuck Ackerman requested copies of all RCS 3/18/2002 Request System performance books were not Closed No System Performance Books prior to A. provided. Some selected information Siemanzko taking over as sytem engineer. External was retreived that was provided. N/A Interface R. J. Slyker Root Cause Team Dale Miller CRAIT-0042 3115/2002 Chuck Ackerman requested copies of the 3/16/2002 Request List of documents were provided to NRC Closed No following documents: and RC teams on 3118/02.

External N/A PCAQ 1998-1963 Interface PCAQ 1990-0120 ~ R. J. gyker PCAQ 1991-0400 PCAQ 1992-0139 PCAQ 1993-0175 PCAQ 1993-0187 CR 2001-0890 TM 1998-0036 Root Cause Team R. J. Slyker 6/11/2002 9:23:41 AM Page 16 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouPlhad Response Status and Number CRAIT-0043 3/15/2002 Reactor Vessel Head Nozzel#3 Wastage 3/16/2002 Voluntary Reactor Vessel Head Nozzle #3 Closed No Cavity Sketches received in compliance unit Wastage Cavity Sketches provided to being provided to root cause team and NRC External NRC AIT Team and Root Cause Team NIA AIT team. Interface R. J. Slyker AITRD-213 is a Section view on centerline of the Nozzle 3 cavity dated 3114 AITRD-214 is a plan view of the cavity that provides dimensions dated 3/15 R. J. Slyker CRAIT-0044 3/16/2002 Verify penetration numbers in 1998 inspection 3/16/2002 Request Meetings with AIT Team on 3/21 and Closed No video. Specifically nozzle 3 and 11 on tape. 3/22 (Andrew Siemaszko, then Andrew Root Siesmaszko and Dave Geisen, N/A Steve Loehlein respectively) indicated that the nozzles could not be individually identified by specific location because of the video was not consistent in identifying the mouseholes and how the orientiation of the entry.

See Serial 2744 (AITRD-0012)

NRC - Me1 Holmberg Rod Cook CRAIT-0045 3/16/2002 EFPYs for B&W plants. 3/16/2002 Request Provided Table 2-1 from EPRl document Closed No 1006284, PWR Materials Reliability Cause Droaram Resoonse to NRC Bulletin N/A steve Lo&lein 200.1-01 (MRP-48). The table provides the B&W plants EFPYs.

NRC -James Davis Christine King CRAIT-0046 3/16/2002 Final version of the white paper on 3/18/2002 Request Morphology of Precipitated Boron Closed No "Morphology of Precipitated Boron Compounds white paper from Dominion Compounds" Source: Steve Hunt, Dominion Root Cause Engineering, Inc. provided 3/19/02. N/A Engineering Steve Hunt NRC -James Davis Steve Hunt 6/11/2002 9:23:41 AM Page 17 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouP/aad Response Status and Number CRAIT-0047 3/15/2002 Bill Bateman requested chemical equation for 3/15/2002 Request Response provided : General equation Closed No interaction of boric acid with carbon steel. plus a description of the mechanism of Root Cause corrosion wastage. N/A CRAIT-0143 is a duplicate Todd Pleune NRC - Bill Bateman Dale miller CRAIT-0048 3/15/2002 What are the details of the head construction? 3/20/2002 Question Preliminary information provided to AIT Closed No Is it a 6 or 8 leaf head? Were penetrations 2 on 3/16 and on 3/20 provided head or 3 close to any weld? Engineering construction, sulfer content, and 308 N/A clad. CMTRs with location map What is the actual composition of the head Prasoon Goyal provided to James Davis 3/20/02 material in particular, the sulfur content? Closure head assembly drawing also provided.

How was the head clad applied? Is the material 304, 308 or 309 SS/ What is the sulfur content?

Need CMTRs for material.

NRC - Me1 Holmberg Dale Miller CRAIT-0049 3/15/2002 Which nozzles were of the heat of material Question A table "CRDM Nozzle heats at B&W- Closed No from Huntington? Design Plants" was provided by Prasoon Engineering Goyal. Stamped proprietary since it N/A listed all plants. HuntingtonAlloys was Prasoon Goyal heat number prefixed with "NX."

NRC - Me1 Holmberg Dale Miller

-m 6/11/2002 9:23:41 AM Page I8 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouPIkad Response Status and Number CRAIT-0050 3/16/2002 Update CRDM Sequence of Events Request Provide daily updated CRDM Sequence Open No of Events (Ackerman)

External N/A Interface Sequence of Events (Hard copy and On-Going Floppy) dated 3115/02 to NRC 3115/02 Sequence of Events (Hard copy and Floppy) dated 3116/02 to NRC 3/16/02 Sequence of Events (Hard copy and Floppy) dated 3/18/02 to NRC 3118/02 Sequence of Events (Hard copy and Floppy) dated 3/19/02 to NRC 3119/02 Sequence of Events (Hard copy and Floppy) dated 3/21/02 to NRC 3/21/02 NRC - Ron Gardner CRAIT-0051 3/16/2002 NRC request for the following documents and Request Copies of the following provided to the Closed No responses: NRC - AIT External N/A IN 96-032 Interface IN 96-032 (Included in PCAQR 96-1018)

R. J. SlykG IN 01-005 IN 01-005 IN 82-006 IN 82-006 NRC - Ron Gardner Dale Miller 6/11/2002 9:23:4I AM Page 19 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouP/aad Response Status and Number CRAIT-0052 3/6/2002 Request of roll torgue traces for each Request Provided request to Rick Garrison on Closed No penetration. (CRDN-0001) 3/6/02. The torqueing is a manual Field Activity operation and does not have traces. He N/A Mark McLaughlin will pull together information on the torquing of the nozzles from those who performed the torque operations.

Information from FTI personnel that performed roll operation rcvd. and distibuted.

NRC - Me1 Holmberg Dale Miller CRAIT-0053 3/6/2002 Requested a copy of roll procedure. (CRDN- Request Framatome procedure, "CRDM Roll Closed No 0002) Expansion"03-5012489-01 dated Field Activity 10/22/01 provided to NRC on 03/20/02. N/A Mark Mclaughlin NRC - Me1 Holmberg Dale Miller CRAIT-0054 3/6/2002 How much was cut on Control Rod Drive Question Rick Garrison has the question for Closed No Nozzle #3? response.

Field Activity N/A (CRDN-0003) MAMcLaughlin 2.77" to go given to Me1 Holmberg 3/7.

NRC - Me1 Holmberg Dale Miller CRAIT-0055 3/6/2002 Provide Drawina of the nozzle dimensions and 3/19/2002 Reauest Supplied Me1 Holmberg with the Closed No of the head to &ow the bores. (CRDN-0004) "Closure Head Assembly Drawing" (M-External 503-127-3) on March 6th. N/A Interface Rod Cook Provided M-503-212-1and M-503-213-2 to Me1 on 3/7/02 NRC - Me1 Holmberg Dale Miller / Rod Cook 6/11/2002 9:23:41 AM Page 20 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD Group/Lead Response Status and Number CRAIT-0056 3/6/2002 Requested Head Drawing for bore for nozzle. 3/19/2002 Request Nozzle Dimensions (Attachment 2) from Closed No (CRDN-0005) Serial 2731.

External N/A Interface CRDM Nozzle Bore Dimensional Rod Cook Analysis !=TI Document 51-5013435-02 dated July 24, 2001.

Both above given to Me1 Holmberg on March 6th.

The following three drawings were given to the NRC on March 7th:

7749-M-503-213-2Control Rod Mechanism Housing 7749-M-503-212-1Closure Head Sub Assembly M-503-767-2 CRDM Nozzle ID Temperbead Weld Repair DB-1 NRC - Me1 Holmberg Rod Cook CRAIT-0057 3/6/2002 Requested 2 copies of the video inspections of Request A video from evening shift on March 6th Closed No the void. Need 1 more copy for Doug through morning shift on March 7th has Simpkins. (CRDN-0008) Activity been given to the NRC, Me1 Holmberg N/A Mark McLaughlin (Video DB#l l )

Also, 4 picture views, top down, of nozzle penetration 3 have been given to Me1 Holmberg.

Final copy provided to Doug Simpkins on 3/9/02.

NRC - Me1 Holmberg Dale Miller CRAIT-0058 3/6/2002 Requestedthe performance demonstration Request report "Demonstrationof Axial and Closed No report for ultrasonic testing (EPRI report). Circumferential Blade Probes on (CRDN-0009) Engineering Oconee CRDM Cracked Nozzle N/A Specimens" to NRC 3/18/02 Prasoon Goyal NRC - Me1 Holmberg Dale Miller 6/11/2002 9:23:42 AM Page 21 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouP/kad Response Status and Number CRAIT-0059 3/6/2002 NCR (FTI) on roll expansion (CRDN-0010) Request No Framatone NCR was written Closed No specifically against the roll expansion for Activity Nozzle 3 (per Travis of FTI). A NCR N/A Mark McLaughlin was written against Nozzle 3 after machining problems were identified.

This is FTI NCR 6014069.

NRC - Me1 Holmberg Dale Miller CRAIT-0060 3/6/2002 Request for the NDE reports. UT results for Request Full UT report (rev 0) provided on Closed No Nozzles 1, 2, 3, 5 , 47, 58 (Colors and gray 3/12/02.

scale) (CRDN-0011) K i d Activity N/A Mark McLaughlin Revision 1 provided 3/14/02.

NRC - Me1 Holmberg Rod Cook CRAIT-0061 3/8/2002 Conduct a visual head inspection after all Request Open boron is off the head prior to replacingthe head per NRC telecon 1400 on 3/8/02. Field Activity (CRDN-0014) Mark McLaughlin NRC - Me1 Holmberg CRAIT-0062 3/8/2002 Provide NRC D. Picket with docketed histoty Request Informationwas provided to NRC D. Closed No of head inspections from 1998 and 2000 Picket (copy of Serial 2741)

(requested by 03/09/02). (CRDN-0015) External N/A Interface DRWuokko NRC - D. Picket DRWuokko CRAIT-0063 3/8/2002 Provide NRC D. Pickett with Generic Letter 88- Request CRAIT-0137 for closure Closed No 05 Program information regarding aspect of preventingcontact of boron with ferretic K G i tigai0-T N/A metals (provide during investigation). (CRDN- Team Leader 0016) Fred VonAhn CRAIT-0137 is a duplicate NRC - D. Picket Dale Miller 6/11/2002 9:23:42 AM Page 22 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouPlaad Response Status and Number CRAIT-0064 3/8/2002 Quantify flange leak flow rates identified during Request See CRAIT-0136 Closed No 12RFO (2000) during the investigation.

(CRDN-0017) Investigation N/A Team Leader CRAIT-0136 is a duplicate Fred VonAhn NRC - Me1 Holmberg Dale Miller

~ _ _ _ _ _ _ ._

CRAIT-0065 3/6/2002 Perform metalurgical analysis on nozzle 3. Request Per Fred Von Ahn 3/27, Todd Pluene is Open No (CRDN-0018) putting together a plan for analyses to Cause be performed. N/A Todd Pleune NRC - A. Hiser Dale Miller CRAIT-0066 12/28/2001 Provide copies of commitments made to the Request E-mailed a copy of Serial 2747 to M. Closed No NRC for performing vessel head Holmberg on 12-18-2001 (pre-IS1 examinations. (CRDN-0019) External inspection). N/A Interface Rod Cook All Bulletin responses were provided to the AIT NRC - Me1 Holmberg Rod Cook 6/11/2002 9:23:42 AM Page 23 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrolcP/kad Response Status and Number CRAIT-0067 3/8/2002 Determine if GL 88-05 or DB response to GL Request Review of GL 88-05 and the DBNPS Open 88-05 required no boron on head. (CRDN- ~

responses (Serials 1527, dated 5/27/88; 0023) External and Serial 1-885, dated 6/26/89) did not Interface reveal any requirement to remove boric Rod Cook acid from any surface once it was found. Evaluationof the presence of the boric acid was suggested, however, subsequent removal of the observed boric acid was not required, either by the GL or the responses to the GL.

Comparison of GL to NG-EN-00324, Rev. 2 was performed and determined that the aspects of the GL were incorporated; however, some previous evaluations related to the reactor head that were performed pursuant to the NG lacked necessary rigor to fully address the issue.

NRC - Ron Gardner Rod Cook CRAIT-0068 3/6/2002 Request 3 copies of the 3/7 - 318 video. Request A copy of was provided on by DLMiller Closed No (CRDN-0024)

Field Activity N/A Mark McLaughlin NRC - Doug Simpkins Dale Miller CRAIT-0069 2/26/2002 Provide pictures of selected penetration from Request Provided copies of pictures for all Closed No visual exam. .(CRDN-0029) penetrations on 3/1;02 to AI Hiser and Field Activity ~~l Holmberg, N/A MAMcLaughlin Pictures found on Compact Disc "Bare Head Video Inspection" NRC - AI Hiser Mark McLaughlin 6/11/2002 9:23:42 AM Page 24 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouPlbad Response Status and Number CRAIT-0070 3/1/2002 Provide UT Pictures overlaying bottom up Request Provided Full UT Inspection Reports Closed No inspections and top down inspections. (Rev.0 and Rev. 1) to Mel.

Field Activity N/A Note: Informed Me1 that this would probably be MAMcLaughlin See CRAIT-0060 part of the Level Ill's report when the results of the inspections were finalized. He understood this may be the "delay" he was seeing.

(CRDN-0031)

NRC - Me1 Holmberg Rod Cook CRAIT-0071 3/6/2000 Need copy of Repair Drawing showing Request Rick Garrison provided a copy of Closed No dimensions for repairs. (CRDN-0032) Framatome Drawing 5015339E, Rev. 0 FieldActivity "CRDM Nozzle Temperbead Weld N/A MAMcLaughlin Repair, DB-1." R. Cook located source in DBNPS Records and provided the Davis-Bessedrawing.

Davis-BesseDrawing M-503-767-2.

To Me1 on 3/7/02.

NRC - Me1 Holmberg Rod Cook CRAIT-0072 311412002 Provide whitepaper on proposed control rod 3/15/2002 Request Email to SPS and request it be Closed No drive relocation plan to NRR Reactor Systems ~~

forwarded to appropriate individual in Branch. (CRDN-0035) External Reactor Systems Branch. N/A (MKL) Interface MKL Emailed to NRC 3118/02.

M. Leisure telecon to follow.

see CRAIT-0058 NRC - Conference Call M. Leisure CRAIT-0073 3/14/2002 Obtain NRR review of Steps 13 through 22 of 3/15/2002 Request Emailed to SPS 3/1501018 requesting Closed No Quarantine Area Inspection and Sampling Bill Bateman review.

Plan. (CRDN-0036) Field Activity N/A (DRW) M, MTGughlin Bill Bateman verbal concurrence obtained Q Conference call 3/15/02 Q CRAIT-0145 is a duplicate 1600.

telecon to follow.

NRC - Conference Call 6/11/2002 9:23:42 AM Page 25 of 55

Tracking Issue Category/ CR Znitiuted Number Date Issue ECD Group/Lead Response Status and Number CRAIT-0074 3/14/2002 Provide integrated Quarantine Area Inspection 3118/2002 Request Integrated Plan to Inspect and Evaluate Closed No and Sampling Plan for Nozzle 2 to NRR and Nozzle #2 Before and After Removal M. Holmberg for review and comment. Plan is Root 'ause Rev 3114/02 2:41 PM to NRC 3118 NIA to include both pre- and post-nozzle removal. S. Loehlein (CRDN-0037) see CRAIT-0144 for closure (DRW) also see CRAlT 35 NRC - Conference Call Dale Miller CRAIT-0075 311412002 Provide record of iron found in containment 3/18/2002 Request From Todd Pleune in Chemistry (~8288). Closed No RE filter to NRR. (CRDN-0038)

(MKL) Cause Plant Issue sheet provided to NRC AIT N/A

s. Loehlein on 3/18 that identifies clogging of RE4597AA and RE4597BA after Cycle 12 mid-cycle outage (no date on sheet)

Provided by Chuck Ackerman AIT was asked at daily brief on 3118 whether any further info was required, and they replied "no".

Also see CRAIT-0090 NRC - Conference Call M. Leisure CRAIT-0076 3/14/2002 Provide details of Frarnatomerepairs 311512002 Request C. Bowles provided non-proprietary Closed No performed on French reactor vessels summary.

(including dates). (CRDN-0039) Engineering Summary ernailed to NRC 3/16/02 Q N/A Evalutation 0946, (MKL)

J. Powers CRAIT-0146 is a duplicate DRW e-mailed a duplicate to the NRC on 3/17/02 Q 945AM NRC - Conference Call M. Leisure 6/11/2002 9:23:42 AM Page 26 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD Grollp/Lead Response Status and Number CRAIT-0077 311412002 Hold conference call with NRWEngineering 311512002 Request Conference call held with NRC 3115/02 Closed No Evaluation Team regarding stress analysis. @ 1100.

(Set for OW15 @ 1100) (CRDN-0042) Engineering NIA (MAR) Telecon written documentingcall.

J. Powers NRC - Conference Call M. Riemer CRAIT-0078 311512002 Provide NRC with preliminary root cause 3/20/2002 Request AIT was provided the Probable Cause Closed No Summary Report on 3/22/02 at 1430.

report.

(DRWI (CRDN-0043) Root Cause N/A

\- I S. Loehlein NRC - Conference Call Rod Cook CRAIT-0079 311512002 Provide stress/strain curve for SS308 clad 3/16/2002 Request D. Wuokko emailed to NRC 3/15/02 Q Closed No material to NRC. (CRDN-0045) Engineering 1908.

(DRW) N/A Also provided to the AIT CRAIT-0148 is a duplicate J. Powers NRC - Conference Call M. Leisure CRAIT-0080 3/15/2002 Provide NRC (inc. Bill Bateman) with plan to 3/16/2002 Request Measurements are to be taken on a one Closed No obtain clad thickness UT measurements. inch grid. Bill Bateman (NRR)

(CRDN-0046) Engineer!ng concurred with this approach in a N/A Evalutatlon conference call 3116 @ 1400.

(MKL)

J. Powers "Reactor Vessel Head ID Clad Thickness Measurements in Region of Wastage Between Nozzles 3 and 11" completed on 3117/02 NRC - Conference Call M. Leisure CRAlT-0081 3/15/2002 Provide NRC (Carol Moyers) brand name of 3/16/2002 Request Per 1000 3/16 internal conference call, Closed No dental mold material being used to obtain brand name is "Kerr". MSDS to be impressions of cavity. (CRDN-0047) Activity faxed to Licensing to be forwarded to N/A (MKL) Mark McLaughlin NRC.

MKL Emailed to NRC 3/18/02 (telecon RAS-02-00126)

NRC - Conference Call Mike Leisure 9

6/11/2002 9:23:42 AM Page 27 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouP/bad Response Status and Number CRAIT-0082 3/15/2002 Provide stress analysis clad thickness 3/16/2002 Request M. Leisure Emailed scanned data to Closed No micrometer measurement data to NRC. NRC 3/16/02 @ 0950.

(CRDN-0048) FieldActivity Telecon to follow. NIA (MAR) Mark McLaughlin NRC - Conference Call M. Leisure CRAlT-0083 3/16/2002 Discuss with NRC what clad thickness value is 3/18/2002 Clarification Per fred VonAhn on 3/27, 0.297 inches Closed No appropriate for use in stress analysis: is being used which is an average value minimum measured value or some statistically Engineering from the UT measurements. N/A derived value? (CRDN-0050) Evalutation J. Powers NRC - Conference Call Dale Miller CRAIT-0084 3/16/2002 Provide NRC with details on our Dlans for use 3/18/2002 Question Serial 1-1267 is beina submitted which Open of PSA to evaluate significance df event. _ _ outlines the plan andschedule for (CRDN-0051) Engineer'g submittal per the CAL.

Evalutation J. Powers NRC - Conference Call CRAIT-0085 3/16/2002 Provide data on unidentified and identified Request Duplicate - close to CRAIT-0088 Closed No leakage that Andrew Siemaszko (System Engr) has External N/A Interface Aaron Bless NRC - Ron Gardner Dale Miller CRAIT-0086 3/16/2002 Find and Drovide Dictures before 1ORFO that Reauest The terminology "high powered camera" Closed No are referenced in the Service Structure access was found in the void request for opening modification (taken by "high powered External Modification 90-0012 written by Ed N/A camera") Interface Chimahuskey. The cameras referred to Aaron Bless were video cameras per Ed. Videos have been located that reflect head conditions in 8R, 10R, 1lR, and 12R.

NRC - Ron Gardner Dale Miller 6/11/2002 9:23:42 AM Page 28 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouPIbad Response Status and Number CRAlT-0087 3/16/2002 An interview was requested with Chuck 31111602 Interview The interview discussed if cleaning of Closed No Ackerrnan the Containment air Coolers or the Cause presence of iron on the RE filter N/A Chuck elements had been an issue.

Ackerrnan Plant Issue sheet provided to NRC on 3/18 that identifies clogging of RE4597AA and RE4597BA after Cycle 12 mid-cycle outage (no date on sheet)

Provided by Chuck Ackerman NRC - Me1 Holmberg Dale Miller CRAIT-0088 3/15/2002 Doug Simpkins requested information about 3/16/2002 Request Provided NRC - Doug Simpkings with Closed No RCS leakrate related data. Electronic copies of CTMT Normal External Sump Excel Spreadsheet (2 copies), None Interface RCS Leakage Word Document, SP Aaron Bless 3357 Leak Rate Data Suggested Change Excel Spreadsheet.

Doug Simpkins was provided a CD which contains the following files pertaining to RCS leakage:

C r d t e cycle 09.xls Crd-te cycle 10.ds Crd-te cycle 11.XIS Crd-te cycle 12.ds Crd-te cycle 13.ds Gsa Cycle 11.XIS Gsa Cycle 12.XIs gsa Cycle 13.ds RE 4597filter.d~

RE 4597filter.JPG close per Doug Simpkins to Dale Miller on 3/25 NRC - Doug Simpkins Aaron Bless 6/11/2002 9:23:42 AM Page 29 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouPikad Response Status and Number CRAIT-0089 3/18/2002 Question what root cause methodology were 3/18/2002 Question Told Me1 we were using FENOC Root Closed No we utilizing and what were are plan (was Cause Analysis Reference Guide talking about a potential target of this week). Root Cause (availble in root cause room). The bais N/A Steve Loehlein for the guide was OE-907 (N" document on root cause). The guide does allow for other techniques such as TapRoot and KT. I also provided Me1 a copy of the Root Cause Plan I drafted for Steve Loehlein.

NRC - Me1 Holmberg Chuck Ackerman CRAIT-0090 3/18/2002 We were discussion history of RE4597 rust 3/18/2002 Question I provided Me1 the Plant Issue item the Closed No and Me1 was looking for some additional - root cause team got from the RE system information. Cause engineers. The issue identifies, "Since N/A Steve Loehlein startup from the Cycle 12 mid-cycle outage, RE-4597AA and BA have exhibited a high rate of clogging their particulate filters due to excessive dust/rust particles suspended in the containment atmosphere."

Also see CRAIT-0075 Memo - S&L Dille to Berry "Particulates in Containment" to NRC on 3/18 NRC - Me1 Holmberg Chuck Ackerman CRAIT-0091 3/18/2002 Jim was looking for history of CRDM flanges 3/18/2002 Question Told Jim the CRDM flange information Closed No and leakage experience. ~

collected thus far is in the timeline data Root Cause base. N/A On 3/19/02, Jim requested information on the Steve Loehlein gasket material and also mentioned a design 3/20/2002:

change that was made to the flange. Jim Harris, Steve Corona, and Rod Cook met with Jim Davis to discuss CRDM flange gasket material, the flange detail change, and provided some other information on history of flange leakage as provided by Framatome.

NRC -James Davis Chuck Ackerman 6/11/2002 9:23:43 AM Page 30 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouPlaad Response Status and Number CRAIT-0092 3/18/2002 Me1 wants to know the estimated pounds of 3/20/2002 Request An estimate provided by the Root Cause Closed No boric acid (actual data points) from the Team of approximately 900 pounds was timeline of the key events related to reactor Root Cause provided to Me1 Holmberg on 3/22/02 N/A vessel head boric acid wastage. Steve Loehlein NRC - Me1 Holmberg Dale Miller CRAIT-0093 3/18/2002 Provide an electronic CODV of Serial 2744 3/18/2002 Reauest NRC - Doua SimDkins was Drovided a Closed No copy of the-1 2 RFO Head Map via e-External mail on 3/18/02. N/A Interface Rod Cook NRC - Me1 Holmberg Rod Cook CRAIT-0094 3/18/2002 Provide a Non-Proprietarypicture or Request See CRAIT-0134. Closed No representation of the nozzle 3 wastage area that can be used in the NRC Public Exit External N/A meeting and in their report Interface D. H. Lockwood duplicate to CRAIT-0134 NRC - Ron Gardner Aaron Bless CRAIT-0095 311812002 Provide a short biography on each member of Request Biographies for members of the Root Closed No the Root Cause Team for evaluation of Cause Team were provided on 3/20/02 experience ~~

RootCause N/A Steve GehlGn-NRC - Me1 Holmberg Dale Miller CRAIT-0096 3118/2002 What is the material composition of Nozzles? 3/20/2002 Question CMTRs with Location Drawing provided Closed No to James Davis 3/20/02 Provide CMTRs. Engineering N/A Evalutation Also see CRAIT-0048 Prasoon Goyal NRC -James Davis Kevin Spencer 6/11/2002 9:23:43 AM Page 31 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouPibad Response Status and Number CRAIT-0097 3/18/2002 What is the status of PCAQR 96-0551, open Request The DBPRC Meeting history for Closed No or closed, with regard to Reactor Head Service Modification 94-0025 was provided to Structure openings See Modification 94-0025 Cause the AIT on 3/16 N/A PCAQR 96-0551 was closed 1/19/99. A follow up item is open to implement modification 94-0025 during 13RFO.

See CRAIT-0104 NRC - Ron Gardner Dale Miller CRAIT-0098 3/18/2002 What Root Cause methodology is being used? Question The FENOC Root Cause guideline is Closed No being used. A root cause plan was Root Cause provided to the AIT on 3/18 (dated 3/18 N/A Chuck 7:40AM)

NRC - Ron Gardner Ackerman Dale Miller CRAIT-0099 3/18/2002 Requested Control Rod Nozzle Cracking 3/18/2002 Request Control Rod Nozzle Cracking White Closed No White Paper Paper dated 5/8/96 provided to AIT External N/A Interface Parsoon Goyal NRC - Ron Gardner Prasoon Goyal CRAIT-0100 3/15/2002 NRC Interview with Prasoon Goyal, DB Design 3/18/2002 Interview Design Engineer provided information Closed No Engineer and B&WOG Material Committee ~- . on boric acid leakage historical issues, representative/MRPAlloy 600 Issue Task External head inspection & cleanning, procedural N/A Group Interface requirements, PRC modification review, Dave Gudger Boric Acid corrosion sources etc ...

NRC - Me1 Holmberg Prasoon Goyal CRAIT-0101 3/18/2002 Request a copy of the QA 12RFO audit report 3/18/2002 Request QA Audit Report AR-00-OUTAG-01and Closed No and checklists. ~ checklist.

Root Cause N/A Steve Loehlein NRC - Ron Gardner Chuck Ackerman 6/11/2002 9:23:43 AM Page 32 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD G r o W / k a d Response Status and Number CRAIT-0102 3/18/2002 Requestedvideo, pictures, and/or hands-on Request Open No inspection of penetration #3 nozzeVevidence.

External N/A Interface Dave Gudger NRC - Me1 Holmberg CRAIT-0103 3/18/2002 Requested RCS temperature and times Request temperature and pressure plots for Closed No associated with 200 - 400 degrees F heatups and cooldowns since 1998 conditions. External retrieved from DADS provided to the N/A Interface NRC on 3/22/02.

Also see CRAIT-0126 Dave Gudger NRC -James Davis Dale Miller CRAIT-0104 3/18/2003 Requested PRC meeting minutes for MOD 94- 3/19/2002 Request PRC database printout provided to NRC Closed No 0025 are complete and include the minutes External (excerpts) for MOD 94-0025. No further N/A Interface action required.

Dave Gudger See also CRAIT-0097 NRC - Ron Gardner Dave Gudger CRAIT-0105 3/18/2002 Interviewwith Dan Haley, former Davis Besse 3/19/2002 Interview Interview w/ Dan Haley on 3/19/02 @ Closed No RCS System Engineer requested. ~ ~ 0730 discussed Mod 94-0025 history External during the time that he was the RCS N/A Interface system engineer (RFO 11 and 12).

Dave Gudger NRC - Me1 Holmberg Dan Haley 4/11/2002 9:23:43 AM

Tracking Issue Category/ CR Initiated Number Date Issue ECD Grolcp/Lead Response Status and Number CRAIT-0106 3/18/2002 The annealing process temperatures for the 3/19/2002 Clarification NRC Inspector, Jim Davis discussed his Open Yes CRD Nozzles appear to be incorrect, lower observation with Prasoon Goyal, Davis than specified for the material. Engineering Besse Materials Engineer and Steve CR 02-01331 Fyfitch, Framatone Engineering. The Also see CRAIT0132 Prasoon Goyal annealing temperature has an affect on susceptibility of stress corrosion cracking. Heat #M3935 appears to be mostly affected as shown by nozzle leaking data in the Framatone CRDM Nozzle History report. However, the annealing temperature was determined to be consistently maintainedabove the minimum manufacturing requirement (1600 degrees F) during the fabrication process. Although it is valid that a lower temperature causes a higher susceptibility to stress cracking, the temperature is considered one of many factors and in of itself does not pose a short term concern. Nozzle #4 would be most susceptible to further cracking and should be monitored and assessed if long term usage is required.

NRC -James Davis Steve Fyfitch CRAIT-0107 3/18/2002 Determine if EPRl documents on corrosion Request Open rate can be released for public disclosure.

Root Cause Christine King NRC - Ron Gardner CRAIT-0108 3/18/2002 Provide NRC with electronic copies of photos Request The response to CRAlT -0159 closes Closed No of Nozzle 46. this item per Me1 Holmberg.

Field Activity N/A M. McLaughlin NRC - Conference Call Dale Miller 6/11/2002 9:23:43 AM Page 34 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouPlbad Response Status and Number CRAIT-0109 3/18/2002 PCAQR 94-0295 addresses commitment 3/19/2002 Request Provided TERMS package for Closed No A16892. The inspectors want to see the Commitment A 16892. This included document for the commitment for A16892 that External the source document and "closure" NA "closed" the commitment. Interface document for the commitment.

Rod Cook NRC - Doug Simpkins Rod Cook CRAIT-0110 3/19/2002 Me1 Holmberg's request is to be provided the Request Action Plan Results IAW WO 02-001917- Closed No results of any step of the inspection and 000 sampling plan. Inspection and Sampling plan Field Activity N/A step #13 Mark Mclaughlin Framatome performed a Dye Penetrate test on the area as directed by this

13. PT examination of the uphill crack location step. A PT report was generated and (180 degrees) of nozzle #3 to determine if the attached to the FENOC work order.

crack remains at the machined surface of the There were no recordable indications weld metal and weld buttering (Le., remaining noted in the inspection. The J-groove weld material), and if there is any performanceof the PT inspection was wastage of the low alloy steel that may have documented on a tape, the tape was occurred as a result of the leakage. (Step 17 documented by a tape log and the tape should be done to record this information) and tape log turned over to the nozzle #

Determine if a crack exists and then evaluate 3 data clerk.

taking a sample. See attached sketch.

NRC - Me1 Holmberg Dale Miller CRAIT-0111 3/19/2002 Me1 Holmberg's request is to be provided the Request Action Plan Results IAW WO 02-001917- Closed No results of any step of the inspection and 000 sampling plan. Inspection and Sampling plan Field Activity N/A step #14 Mark Mclaughlin This inspection was performed and documented on the same report and

14. PT exam the underside of the tape as item # 13 unsupportedsection of cladding in the area of the bulge at nozzle #3.

NRC - Me1 Holmberg Dale Miller 6/11/2002 9:23:43 AM Page 35 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrOup/Lead Response Status and Number CRAIT-0112 3/19/2002 Me1 Holmberg's request is to be provided the Request Action Plan Results IAW WO 02-001917- Closed No results of any step of the inspection and 000 sampling plan. Inspection and Sampling plan Field Activity N/A step #15 Mark Mclaughlin Thls inspection was performed and documented on the same tape as # 13

15. PT exam of the entire wetted area of the and # 14.

remaining J-groove weld of nozzle #3.

NRC - Me1 Holmberg Dale Miller CRAIT-0113 3/19/2002 Me1 Holmberg's request is to be provided the Request Action Plan Results IAW WO 02-001917- Closed No results of any step of the inspection and 000 sampling plan. Inspection and Sampling plan Field Activity NIA step #16 Mark Mclaughlin The cavity area of nozzle # 3 was cleaned with nylon bristle toothbrushes

16. Clean the area with a nylon brush and and the area was vacuumed after the vacuum to prepare the area for impressions. cleaning. The brushing removed most of the adhered surface debris. The brushing and vacuuming were video taped, a tape log was generated and the tape and tape log turned over to the nozzle # 3 data clerk.

NRC - Me1 Holmberg Dale Miller CRAIT-0114 3/19/2002 Me1 Holmberg's request is to be provided the Request Action Plan Results IAW WO 02-001917- Open No results of any step of the inspection and 000 sampling plan. Inspection and Sampling plan Field Activity NIA step #17 Mark Mclaughlin An impression was made as directed by step 17. The impression was scanned

17. Take impressions of the remaining bore with the laser scanner. The impression area near the crack including the J-groove has been stored in a yellow plastic bag weld at the 180" location on nozzle #3. in the Framatome fire cabinet inside Looking for volume loss and possible containment.

undercutting of low alloy steel at cladding interface.

NRC - Me1 Holmberg Dale Miller 6/11/2002 9:23:43 AM Page 36 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouPjkad Response Status and Number CRAIT-0115 3/19/2002 Me1 Holmberg's request is to be provided the Request Action Plan Results IAW WO 02-001917- Closed No results of any step of the inspection and 000 sampling plan. Inspection and Sampling plan Field Activity N/A step #18 Mark Mclaughlin An impression was made as directed by step 18. The impression was scanned

18. Take impressions of the topside bore area with the laser scanner. The impression of nozzle #3 for approximately 1-2 inches has been stored in a yellow plastic bag along the top of the vessel head, looking for in the Framatome fire cabinet inside wastage. See attached sketch. containment.

NRC - Me1 Holmberg Dale Miller CRAIT-0116 311912002 Me1 Holmberg's request is to be provided the Request Action Plan Results IAW WO 02-001917- Closed No results of any step of the inspection and 000 sampling plan. Inspection and Sampling plan FieldActivity NIA step #19 Mark Mclaughlin It Was determined that this impression could not be made.

19. Take impression of the entire under-hang area.

NRC - Me1 Holmberg Dale Miller CRAIT-0117 311912002 Me1 Holmberg's request is to be provided the Request Action Plan Results IAW WO 02-001917- Open No results of any step of the inspection and 000 sampling plan. Inspectionand Sampling plan Field Activity N/A step #20 Mark Mclaughlin The Laser Scan Of the impression in steps 17 and 18 was performed. The

20. Laser profile of impression taken in Step data has bee forwarded to Lynchburg to 19 to tie together the profile obtained in Step format into a model. It was determined

10. that the data could not be incorporated into the model generated from the laser scan in step # 10. Lynchburg has the action to forward the models generated from these scans to site.

NRC - Me1 Holmberg Dale Milller 6/11/2002 9:23:43 AM

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrOup/Lead Response Status and Number CRAIT-0118 3/19/2002 Me1 Holmberg's request is to be provided the Request Action Plan Results IAW WO 02-001917- Closed No results of any step of the inspection and 000 sampling plan. Inspection and Sampling plan Field Activity N/A step #21 Mark Mclaughlin The open nozzle flanges around location

1. 3 have been targeted and scanned

21. Perform photogrametryof flanges in the with TOPO. This data file will be saved cavity area. and compared to data from a post repair TOPO scan to verify adjacent nozzle position after the repair of the cavity at #

3 has been repaired. The data from this scan will also be used to design a tooling plate for the repair of nozzle # 3.

NRC - Me1 Holmberg Dale Miller CRAIT-0119 3/19/2002 Me1 Holmberg's request is to be provided the Request WO 02-005072-000 Open results of any step of the inspection and sampling plan. inspection and Sampling plan Field Activity step #22 Mark Mclaughlin

22. Complete repairs for nozzles #1, #5, and

1. 47.

NRC - Me1 Holmberg CRAIT-0120 3/18/2002 Requested a copy of "Reactor Coolant System 3/18/2002 Request DB-OP-01200Rev 3 with TAO1-0996 Closed No Leakage Management" procedure provided to NRC on 3/19/02 Root Cause

~ ~ ~~

N/A Chuck Also see CRAIT-0088 Root Cause Team Ackerman Dale Miller CRAIT-0121 3/19/2002 Wants to know the material lost at nozzle 3. 3/19/2002 Question Provided calculation that estimated the Closed No

- volume 123.7 in3 and weight 35#. This

'00' cause calculation was an estimate. N/A Steve Loehlein The draft root Cause Report stated about 125 cubic inches.

NRC - Me1 Holmberg Steve Hunt 6/11/2002 9:23:43 AM Page 38 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouPlbad Response Status and Number CRAIT-0122 3/19/2002 Interview with Pete Mainhardt, Davis Besse 3/19/2002 Interview Interview w/ Pete Mainhardt on 3/19/02 Closed No Reactor Vessel Head inspection engineer @ 1030 provided reactor vessel head during RFO 11 and 12. External inspection information during RFO 11 N/A Interface and 12.

Dave Gudger NRC - Me1 Holmberg Pete Mainhardt CRAIT-0123 3/19/2002 Mike Hacker and Steve Fyfitch need to talk 3/22/2002 Request Nozzle 46 was discussed with Jim Davis Closed No Me1 to discuss top down UT results for Nozzle

46. Cause see CRAIT-0132 for summary of N/A Steve Loehlein dis~ussions NRC - Me1 Holmberg Dale Miller 6/11/2002 9:23:43 AM Page 39 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrOrcp/Lead Response Status and Number CRAIT-0124 3/19/2002 The Root Cause Team (and the NRC 3/20/2002 Request The Following were obtained by the Closed No AIT)requested the following from INPO: - Root Cause Team for review in their SOERs External investigation and copies were given to N/A 81-12 Interface the NRC AIT:

84-5 SOERs 81-12 (and Review of)

SERs 84-5 46-80 35-81 SERs 11-82 SERs 57-83 46-80 72-83 35-81 32-84 11-82 41-85 57-83 13-87 72-83 31-87 32-84 35-87 41-85 (along with Closeout information -

10-89 Memo NEO-88-01246) 2-90 13-87 (along with Closeout information -

4-01 Memo NEO-88-00237) 31-87 (along with Closeout information -

SENs Memo NEO-88-00288) 6 35-87 (along with Dissemination Memo -

18 NEO-88-01104and Closeout Memo -

190 NEO-88-00056 216 10-89 2-90 (along with lnconel 600 Evaluation O&MR Memo - NED 91-20038) 348 4-01 (along with the Davis-Besse Operating Experience Document Checklist for SER 4-01)

SENs 6 (along with Closeout Memo for SER 13-87 (NEO-88-00237) 18 (along with the TE Operating Experience Report Screening Checklist) 190 216 (along with the Davis-Besse Operating ExperienceDocument Checklist for SEN 216)

O&MR 6/11/2002 9:23:44 AM Page 40 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouPlkad Response Status and Number 348 (along with Closeout Memo NEO 01813)

Operating Experience OE2919 OE3464 OE3568 OE4354 OE5403 OE5996 OE6213 OE6449 OE6543 OE6583 OE6993 OE7355 OE7541 OE7689 OE7912 OE8151 OE8256 OE8965 OE9183 OE9487 OE9760 OE9940 OElOO50 OElO255 OEl0415 OElO430 OE10516 OElO740 OE10741 OElO992 OEll396 OEll505 OEll537 OEl1541 OEll655 OEll700 OEll887 OE12133 OE12345 6/11/2002 9:23:44 AM Page 41 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrOUP/had Response Status and Number OEl2370 OEl2463 OEl2466 OEl2516 OE12587 OEl2940 OE12980 OEl3056 OE13118 OE13251 OEl3377 OE12133 Root Cause Team Aaron Bless CRAIT-0125 3/19/2002 Interview with Dave Geisen, Manager Design 3/19/2002 Interview Jim Gavula and Ron Gardner met with Closed No Engineering Request - Dave Geisen, Manager Design External Engineering to discuss Mod 94-0025 N/A Interface PRC and management reviews and Dave Gudger deferrals.

NRC -Jim Gavula Dave Geisen CRAIT-0126 3/20/2002 Requested data on head temperature profile Request Hot leg temperature data was retrieved Closed No (for Bill Cullen at NRR). from DADS and provided to the NRC External .N/A Also see CRAIT-0103 Interface Aaron Bless NRC - Doug Simpkins Dale Miller 6/11/2002 9:23:44 AM

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouP/had Response Status and Number CRAIT-0127 3/20/2002 Request information on a change in material Request Information was provided by James Closed No for the CRD flange studs and nut rings Harris (Framatome) on flange material Engineering change from asbestos to graphite. This N/A was provided in an upgrade timeline in Prasoon Goyal AITRD-0365.

Nut ring material has always been SA 320, Gr L43. The only change was in the rust inhibitor which was changed from to RustBan 392. The Data package for the CRDM bolts, nut ring, washers, etc was provided to Jim Davis on 3/20/2002 NRC -James Davis Rod Cook CRAIT-0128 3/20/2002 Me1 Holmberg would like to further dicuss the Interview Mike Hacker (Framatome) and Rod Closed No Reactor Vessel Head ID Clad Thickness Cook (FENOC) met with Me1 Holmberg Measurements with Mike Hacker FieldActivity on 3/21 to discuss the Reactor Vessel N/A Mark Mchughlin Head ID Clad Thickness Measurement in Region of Wastage Between Nozzles 3 and 11. Discussion indicated that other measurements will be made around 11.

NRC - Me1 Holmberg Rod Cook CRAIT-0129 3/20/2002 What is the known start time of the corrosion Question The start of the corrosion mechanism is Closed No mechanismthat caused wastage around reported as about May, 1999 based on nozzle #3 Cause deposition of iron on the filters for N/A Steve Loehlein- RE4597AA and RE4597BA.

NRC - Me1 Holmberg Dale Miller CRAIT-0130 3/20/2002 A video of 12RFO inspections has not yet Reauest All videos have been located and Closed No been found. Need to continue search provided to the NRC.

Root Cause N/A Tom Pleune NRC - Me1 Holmberg Dale Miller 6/11/20029:23:44 AM

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouPikad Response Status and Number CRAIT-0131 3/20/2002 Need to know the manufacturer and heat of Reauest Information on the manufacturerand Closed No

- heat of all nozzles was provided to Jim Nozzle #46 Engineering Davis on 3/20/02 Location Drawing NIA Evalutation Prasoon Goyal see CRAlT items 0048,0049 and 0096 NRC -James Davis Dale Miller CRAIT-0132 3/19/2002 Follow-up on Interview with Prasoon Goyal 3/20/2002 Voluntary Preliminary information on RPV head, Closed No and Steve Fy-fitch (CRAIT-00106)and NRC clad, and nozzle material composition 3/19/02 Debrief Mtg comments. provided which will be followed-up by N/A Interface providing CMTRs and a discussion on CRAIT-00106 Dave Gudger nozzle 46 penetration was conducted.

NRC -James Davis Prasoon Goyal CRAIT-0133 3/19/2002 Interview with Joe Rodgers, Manager Plant 3/20/2002 Interview Jim Gavula and Ron Gardner met with Closed No Engineering and Dave Eshelman, Director Joe Rodgers and Dave Eshelman on Nuclear Services. 3/21 to discuss Mod 94-0025 PRC and N/A Interface management reviews and deferrals.

Dave Gudger Joe Rodgers NRC -Jim Gavula CRAIT-0134 3/20/2002 Request from NRC-DougSimpkins for Request 5 of the 7 have been copied to a disk to Closed No electronic copies of 7 be provided to the NRC.

pictures/sketches/diagrams. External N/A

. .Interface

__ Remaining electronic copies of pictures See also CRAIT-0094. provlded to Doug Simpkins.

Information Provided:

Electronic copies of Sketch 1, 2, &

11.gif, Characterizationof wasatage.jpg, Nozzle #2 side view.jpg, and Nozzle #2 Defect Locationjpg provided on 3/20/02 NRC - Doug Simpkins Aaron Bless 6/11/2002 9:23:44 AM

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouP/bad Response Status and Number CRAIT-0135 3/20/2002 Interviewwith Prasoon Goyal (Second Time) 3/21/2002 Interview NRC discussion with Prasoon Goyal Closed No covered modification 94-0025 and External PCAQR 96-0551. N/A Interface Dave Gudger NRC - Jim Gavula Prasoon Goyal CRAIT-0136 3/8/2002 Quantify flange leak flow rates identified during Request Specific flange leakage can't be Closed No 12RFO (2000). (CRDN-0017) quantified. Unidentified leak rates from Investigation Jan. 1995 through the summer of 1998 N/A Team Leader was less than 0.1 gpm. The UL was Fred VonAhn about 0.1 gpm from the summer of 2000 (after 12RFO) until about September 2000. The UL was about 0.2 gpm after September 2000. This information derived from the initial draft of the Root Cause report which provides additional further information on unidentified leakage NRC - Conference Call Dale Miller CRAIT-0137 3/8/2002 Provide NRC DPickett with Generic Letter 88- Request Open 05 program information regarding aspect of preventingcontact of boron with ferretic Investigation metals. (CRDN-0016) Team Leader Fred VonAhn Duplicate to CRAIT-0063.

NRC - Conference Call CRAIT-0138 3/15/2002 NRC would like a description/sketchof Nozzle Request A desciption and sketch of Nozzle 2 was Closed No

2. provided. Reference RAS-02-00117.

Field Activity N/A Mark McLaughlin NRC - Conference Call Dale Miller 6/11/2002 9:23:44 AM Page 45 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouPlbad Response Status and Number

~

CRAIT-0139 3/15/2002 Provide NRC with copy of long-term plan for Request Open Nozzles 2 and 3, when available.

Engineering Evalutation Jim Powers NRC - Conference Call CRAIT-0140 311512002 Go after UTs for Nozzle 3 bore area cladding 3/18/2002 Question Thickness of Nozzle 3 cavity cladding Closed No thickness. was established through the FieldActivity performanceof a grid UT. N/A See also CRAIT-0080 Mark McLaughlin Reactor Vessel Head ID Clad Thickness Measurements in Region of Wastage Between Nozzles 3 and 11. (performed 03117/02)

NRC - Conference Call DRWuokko CRAIT-0141 311512002 Review proprietary information in NRCINRR Request Open possession to determine if any can be de-classified. If it cannot be de-classified then External provide 2.790 affidavit. Interface DHLockwood NRC - A Mendiola

~ _ _ _ . _ _ _ _ _ ~

CRAIT-0142 311512002 Check with Field Activities Team if there are Question Thickness of Nozzle 3 cavity cladding Closed No other tools to get cladding thickness was established through the measurements. Six readings of clad thickness Activity performanceof a grid UT. n/a would give a statistical basis. Mark McLaughlin Reactor Vessel Head ID Clad Thickness Measurements in Region of Wastage Between Nozzles 3 and 11. (performed 03117/02)

NRC - Conference Call DRWuokko 6/11/2002 9:23:44 AM Page 46 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouP/bad Response Status and Number CRAIT-0143 3/13/2002 Provide chemical equation for boric acid Request Whitepaper on corrosion equations was Closed No interacting with carbon steel. Provide products provided to the NRC/NRR by MKLeisure resulting from the reaction (iron borate, iron Cause e-mail of 03/16/02 Q 1503 hrs. N/A hydroxide, etc.) Whar are the colors of these Sloehlien compounds.

Duplicate to CRAlT-0047 NRC - Bill Bateman DRWuokko CRAIT-0144 3/14/2002 Provide Nozzle 2 inspection and sampling plan Request Integrated Plan (Field/Engineering/Root Open No to NRC/NRR for review and concurrence Cause) To Inspect, Evaluate, and before implementing. (CRDN-0037) Act'vity Remove Nozzle #2 was e-mailed to the N/A MMcLaughlin NRC by DRWuokko on 03/21/02 @lo59 Also see CRAIT-0074 hours. Conference call is scheduled to discuss on 03/22/02 following the 1400 hour0.0162 days <br />0.389 hours <br />0.00231 weeks <br />5.327e-4 months <br /> daily call.

NRC - Bill Bateman DRWuokko CRAIT-0145 3/14/2002 Obtain NRR review of Steps 13 through 16 of Request Obtained NRR/B Bateman Closed No Quarantine Area Inspection and Sampling review/concurrence on Steps 13-22 on Plan. (CRDN-0036) Activity 03/15/02. See referenced telecon N/A MMcLaughlin documentation.

Duplicate to CRAIT-0073 NRC - Bill Bateman DRWuokko CRAIT-0146 3/14/2002 Provide details of Framatome repairs Request Forwarded to NRC the information Closed No performed on French reactor vessels provided by CBowles-FANP. Sent e-mail (including dates). Engineering to NRC/NRR on 03/17/02 Q 0945 hours0.0109 days <br />0.263 hours <br />0.00156 weeks <br />3.595725e-4 months <br />. N/A Evalutation Duplicate to CRAIT-0076 C Bowles NRC - Conference Call DRWuokko 6/11/2002 9:23:44 AM Page 47 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouP/had Response Status and Number CRAIT-0147 3/14/2002 Discuss information flow protocol with NRR Clarification The following protocol is to be followed Closed No DBNPS Project Manager and CRDM Project in discussions with the NRC:

Manager. If the issue is DBNPS-specific, then the N/A Interface initial contact is to be through DBNPS DRWuokko Project Manager SPSands or Backup Project Manager DVPickett.

If the issue is generic RVH degradation, then contact is to be made through Steve Bloom, Project Manager.

If the issue is generic CRDM Nozzle cracking, then contact is to be made through Beth Wetzel, Project Manager.

NRC - Conference Call DRW uokko CRAIT-0148 3/15/2002 Provide NRC with 308 Stress Strain Curve Request 308 Stress Strain Curve provided to Closed No discussed during the 03/15/02 stress analysis NRC/NRR by DRWuokko e-mail on conference call, as requested by NRC Ed Engineering 03/15/02 Q 1900 hours0.022 days <br />0.528 hours <br />0.00314 weeks <br />7.2295e-4 months <br />. CBowles - N/A Hackett. (CRDN-0045) FANP provided curve to DRWuokko.

Jim Powers Duplicate to CRAIT-0079 NRC - Conference Call DRWuokko

_ _~ . _ _ _ _ _ _ ~___._ -___ - ~ _ _ _ _ _ _ _ _ __________________.___~______-- --

CRAIT-0149 3/20/2002 NRC 3/20 Debrief: Operations staff and 3/22/2002 Clarification Discussion with Doug Sirnpkins Closed No management have a disconnect with respect - indicated that operators had expressed to whether unidentified leakage was External to Operations management that leakage N/A associated with RPV head leakage. Interface was coming from the reactor head. This Aaron Bless topic was discussed with Tony Stallard and Bill Bentley and there was no recollection of head leakage being specifically discussed. When leakage concerns were investigated in the past, Tony and Bill recalled that head leakage was a possibility through process of elimination in that accessible areas of containment had been walked down.

NRC - Doug Simpkins Dale Miller 6/11/2002 9:23:44 AM

Tracking Issue Category/ CR Initiated Number Date Issue ECD G r O u P / a d Response Status and Number CRAIT-0150 3/20/2002 NRC 3/20 Debrief: Oxides on filters was Clarification D. Giesen discussed this with the AIT on Closed No disoositioned bv SW Research in a November - 3/22/2002.

5, i999, memoiandum as potentially caused External N/A bv steam leak. Interface Aaron Bless NRC - Doug Simpkins Rod Cook CRAIT-0151 3/20/2002 Not able to confirm the number of nozzles Clarification This was discussed with AIT on 3/22/02 Closed No inspected in 1996 as described in IEB 2001-01 by Andrew Siemaszko. Expected detail response. Head curvature and camera does External was not intended to be consistent with N/A not provide expected detail. Interface Bulletin 2002-01 expectations. Nozzle Rod Cook views did provide conclusion that boric acid leakage of the type seen at Oconee and ANO-1 was not present. Nozzles shown on video, as stated in Serial 2744, are nozzles that have some obscurrence or boric acid in contact. If the nozzles were not videotaped, they did not indicate any type of boric acid obscurrence.

NRC - Me1 Holmberg Rod Cook CRAIT-0152 3/20/2002 Plant staff comDliance with Boric Acid Control 3/22/2002 Clarification This item was discussed with the AIT in Closed Procedure based on engineering analysis several interviews.

performed was questioned. External interface Rod Cook NRC - Me1 Holmberg Dave Giesen CRAIT-0153 3/21/2002 Request for CRDM hold down bolts (grade 3/22/2002 Request CRDM hold down bolts preload UT Closed No 660) preload and code requirements. acceptance range criteria is 27,500 Ibs -

External 35,700 Ibs. ASME code is SA 453. N/A Interface Dave Gudger NRC -James Davis Dave Gudger 6llll2002 9:23:44 AM

Tracking Issue Category/ CR Initiated Number Date Issue ECD G r O u P / k d Response Status and Number CRAIT-0154 3/22/2002 Interview with Boric Acid Corrosion Control 3/22/2002 Interview NRC Interview with BACC program Closed Program coordinator (Walt Molpus) coordinator reviewed the procdure External requirements and the implementationof Interface the program at Davis Besse Dave Gudger NRC -Jim Gavula Walt Molpus CRAIT-0155 3/22/2002 In reference to picture dated 3/12/02 at 04:36, Clarification The debris observed after the initial Closed No is the debris shown rust and where did it come removal of insulation was discussed with from? Root Cause John ONeill. John's observation is that N/A Steve Loehlein the debris is most likely rust colored boric acid pieces and discolored /

degraded mirror insulation pieces.

Refer to CRAIT-0011 which discusses material that was vacuumed up on 3113/02.

NRC - Me1 Holmberg Dale Miller CRAIT-0156 3/18/2002 Requested information on Containment recirc Request History for fans C56-1 and C56-2 was Closed No fan history since 1996. provided to Ted lang and Doug Cause Simpkins on 3/18/02 N/A Ted Lang Root Cause Team Dale Miller CRAIT-0157 3/25/2002 After discovery of video tapes in the 314" wide Voluntary Video tapes copied were provided to the Closed No format, these tapes were copied into VHS AIT on 3/22. These were 7 tapes of format on 3/21/02 at RGB Productions, Inc. External CRDM flanges and 1 tape of the vessel N/A Interface head conducted through the weep Dale Miller holes. Tapes were numbered DB-9301 through DE-9307 and DB-9315.

Root Cause Team Dale Miller 6/11/2002 9:23:45 AM Page 50 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrOlcp/Lead Response Status and Number CRAIT-0158 3/25/2002 NRR Reactor System Branch reviewed the Voluntary Open whitepaper dated 3/18/02, "Proposed Control Rod Drive Relocation Plan Impact on Davis- Engineering Besse Cycle 14 Design" and responded that Evalutation control rod relocations are not typically addressed in reload analysis space. It is expected that a complete analysis will be submitted for staff review and approval.

See CRAIT-0072 NRC-Doug Pickett CRAIT-0159 3/25/2002 Requested copy of picture / video of PT for Request Video, "P. T. of Nozzle # 46 J-groove Closed No Nozzle 46 Weld Flapping of Nozzle #46 J-groove Activity Weld" (Tape DB#A8 dated 3/24/02) N/A Mark McLaughlin copy of the PT report (color) was provided on 3/26/02 to Me1 Holmberg NRC - Me1 Holmberg Dale Miller CRAIT-0160 3/26/2002 Jim Gavula wanted to know what was meant 3/26/2002 Clarification The specific question was what was the Closed No by the statement in the SIA Calc (W-ENTP- "bottom of the interference zone. Where 11Q-306, "Finite Element Gap Analysis of Engineer!ng was that? Discussions with Dick CRDM Penetrations (Davis-Besse)"), Evalutat'on Mattson at SIA anwered the question for Appendix D, page D2 that said "It was shown Prosoon Goyal Jim.

in Table 3, Section 6.1, that the Tube 3 had no gaps at the very bottom of the interference zone. 'I NRC -Jim Gavula Rod Cook CRAIT-0161 3/25/2002 The Preliminary draft root cause report made Clarification Rod Cook talked with Andrew Open No available to the NRC stated on page 18 that Siemaszko concerning this issue and he boron deposits had been forced up through Root Cause did not feel the indications showed flow N/A the insulation during RF-12 and RF-13. This Steve Loehlein upward .

seemed inconsistant with interviews conducted.

NRC -Jim Gavula Rod Cook 6/11/2002 9:23:45 AM Page 51 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouPlaad Response Status and Number CRAIT-0162 3/25/2002 The estimate of leakrate may have been Clarification Open underestimated based on boron found on the reactor vessel head when boron was Root Cause disrtibuted around containment. Steve Loehlein NRC - Doug Simpkins CRAIT-0163 3/25/2002 PCAQR 94-0295 addressed a TERMS item Question The TERMS item was based on an Closed No that was closed rather than made an ongoing internal Davis-Besse memo (source item. What was the basis for the conclusion document CCN NED92-20101for N/A that this was not a violatrion of an NRC Interface TERMS A16892)and was not a commitment? Dale Miller commitment made to the NRC via a Serial letter. The TERMS item was See CRAIT-0109 closed because the boric acid corrosion control program was the actual committed program per GL88-05.

NRC -Jim Gavula Dale Miller CRAIT-0164 3/25/2002 Did an inspection of the Reactor Head occur in Question Open the 9RFO?

Root Cause Steve Loehlein NRC -Jim Gavula CRAIT-0165 3/25/2002 Jim Davis observed that acid appeared to be 3/25/2002 Clarification Rod Cook talked with Andrew Closed No present on the insulation to a depth of about Siemaszko concerning this issue and 4 - 5 inches at the D-10 nozzle location. The determined boric acid was above the N/A root cause said that boric acid had been Interface insulation and had not been removed.

removed and Andrew said in interviews that Rod Cook the deposits had not been removed.

NRC - James Davis Rod Cook CRAIT-0166 3/26/2002 Provide documentation/ confirmation of the 9 Clarification This information was found in MWO 1- Closed No CRDM flanges that had gaskets replaced in 95-0613-03. The work order displayed a 1996 External map of the flanges on the head and N/A Interface highlighted those gaskets that were Aaron Bless replaced per the work order.

NRC -James Davis Aaron Bless 4/11/2002 9:23:45 AM Page 52 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouP/aad Response Status and Number CRAIT-0167 3/26/2002 Explain the criteria that was applied to Clarification This was discussed between Ed Closed No determine when a CRDM flange gasket was to ~ Chimahusky, Jim Davis and Me1 be replaced based on the flange leakage External Holmberg on 3/27. Replacements of N/A grading criteria (1 thru 5) established prior to Interface flange gaskets were determined based 1996. Dale Miller on outage plans, the number needing replacement and the window for replacing them. Using the criteria, the worst flange left in place would have been graded a 2. Ed rated the D-10 steam cut flange at between 1 and 2.

Boric acid deposits were generally cleaned up the best that could be accomplished from the top of the Service Structure.

Later discussion with Chuck Daft, mike Sheperd and Pete senuik occurred to discuss the procedure and code requirements. The procedure that applies is DB-PF-03010. For 12RF0, the code applicable wassection XI, 1986 version. The ASME code applicable now is 1995 with 1996 addenda.

NRC -James Davis Dale Miller CRAIT-0168 3/26/2002 What is the size of a weep hole opening in the Question per Frarnatome, the weep holes are Closed No Service Structure ? approximately rectangular, 4 5 / 8 wide External and 7 1/4" tall. N/A Interface Dale Miller NRC - Me1 Holmberg Dale Miller CRAIT-0169 4/17/2002 Requested a copy of Work Order 00-001846 4/17/2002 Request Gave NRC Scott Thomas a copy of Closed No Work Order 00-001846-000 and00-External 001846-001. N/A Interface Aaron Bless NRC - Scott Thomas Aaron Bless 6/11/2002 9:23:45 AM Page 53 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD Grolcp/Lead Response Status and Number CRAIT-0170 5/16/2002 NRC Inspector Jim Gavula requested the Request Open following documents after the Entrance meeting conducted on 5/16/02:

D. L. Miller NG-EN-00324 In Effect NG-EN-00324 12RFO (2000)

NG-EN-00324 11RFO (1998)

NG-EN-00324 10RFO (1996)

Work Oders for 12RF0, 11RFO, and 10RFO (NG-EN-00324)Attachment 1's completed for 12RFO,11RFO, and 10RFO WO for head inspections for 12RF0, 11RFO, and 10RFO System Engineer Restart Readiness Report QA Trend Reports 1999 through 12RFO Audit Report that would have captured filter clogging NRC -Jim Gavula CRAIT-0171 5/20/2002 NRC Jim Gavula requested drawings showing 5/20/2002 Request Drawings M-503-127-3, 7749-M-503-212- Open No the closure head assembly and nozzle 1, 7749-M-503-213-2,and 03-1221681-dimensions. Drawings which were previously 03 (selected pages) were provide to Jim N/A given to the Augmented Inspection Team. A. w. ~l~~~ Gavula (5/20/02)

NRC - Jim Gavula A. W. Bless 6/11/2002 9:23:45 AM Page 54 of 55

Tracking Issue Category/ CR Initiated Number Date Issue ECD GrouP/bad Response Status and Number CRAIT-0172 5/20/2002 The following video tapes were requested by Request The video tapes were provided to NRC Closed No NRC Me1 Holrnberg during the May 20, 1400 Me1 Holrnbegfrom D. R. Wuokko on hour conference call. 5/21/02. The cavity video was shot in N/A D. R. Wuokko accordance with the Davis-Besse "Plan "Plug Inspection Cut Out in Head 05/16/02" for Extraction and Presetvation of (copy #A29) Nozzle #3 Cavity Area for Root Cause "Nozzle 46-PT 05/01/02" (copy #A20) Analysis," step 12.

"Nozzle 46-PT 05/02/02" (copy #A21)

NRC - Me1 Holrnberg

~~ ~

CRAIT-0173 5/20/2002 The following video tape was requested by Request The video tapes were provided to NRC Closed No NRC Doug Pickett during the May 20, 1400 Me1 Holrnbegfrom D. R. Wuokko on hour conference call. 5/21/02. The cavity video was shot in N/A D. R. Wuokko accordance with the Davis-Besse "Plan "Plug Inspection Cut Out in Head 05/16/02" for Extraction and Preservation of (copy #A29) Nozzle #3 Cavity Area for Root Cause Analysis," step 12.

NRC - Doug Pickett 6/11/20029:23:45 AM Page 55 of 55