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Category:Letter
MONTHYEARIR 05000275/20230042024-02-0909 February 2024 Integrated Inspection Report 05000275/2023004 and 05000323/2023004 ML24002B1802024-01-29029 January 2024 LRA Audit Plan DCL-24-010, Nuclear Material Transaction Report for New Fuel2024-01-29029 January 2024 Nuclear Material Transaction Report for New Fuel ML24018A0152024-01-29029 January 2024 License Renewal Application Review Schedule Letter ML24017A2492024-01-24024 January 2024 Letter to Neil Peyron, Chairman, Tule River Tribe, Re. Diablo Canyon ML24024A1752024-01-24024 January 2024 Letter to Tribal Council San Luis Obispo County Chumash Indians on Section 106 Consultation and Scoping Process for the Environmental Review of Diablo Canyon Nuclear Plant, Unit 1 and 2 License Renewal Application ML24003A8902024-01-24024 January 2024 Letter to P. Gerfen - Diablo Canyon Notice of Intent to Conduct Scoping and Prepare an Environmental Impact Statement ML24012A1582024-01-24024 January 2024 Letter to Hon. Violet Sage Walker, Chairwoman Northern Chumash Tribal Council on Section 106 Consultation and Scoping Process for the Environmental Review of Diablo Canyon Nuclear Plant, Unit 1 and 2 License Renewal Application ML24012A0062024-01-24024 January 2024 Achp Scoping Letter for Diablo Canyon License Renewal ML24012A0552024-01-24024 January 2024 Letter to J. Polanco, Shpo, on Request to Initiate Section 106 Consultation and Scooping Process for the Environmental Review of Diablo Canyon Nuclear Plant, Unit 1 and 2 License Renewal Application ML24024A1562024-01-24024 January 2024 Letter to Hon. Gabe Frausto, Coastal Band of Chumash Indians on Section 106 Consultation and Scoping Process for the Environmental Review of Diablo Canyon Nuclear Plant, Unit 1 and 2 License Renewal Application ML24024A1652024-01-24024 January 2024 Letter to Hon. Mona Olivas Tucker, Yak Tityu Tityu Yak Tilhini Northern Chumas Indians on Section 106 Consultation and Scoping Process for the Environmental Review of Diablo Canyon Nuclear Plant, Unit 1 and 2 License Renewal Application ML24024A1612024-01-24024 January 2024 Letter Hon. Gary Pierce, Salian Tribe of Monterey and San Luis Obispo Counties on Section 106 Consultation and Scoping Process for the Environmental Review of Diablo Canyon Nuclear Plant, Unit 1 and 2 License Renewal Application ML24012A0362024-01-24024 January 2024 Request to Initiate Section 106 Consultation and Scoping Process for the Environmental Review License Renewal Application DCL-24-009, Nuclear Material Transaction Report for New Fuel2024-01-17017 January 2024 Nuclear Material Transaction Report for New Fuel DCL-24-008, Schedule Considerations for Review of the DCPP License Renewal Application2024-01-17017 January 2024 Schedule Considerations for Review of the DCPP License Renewal Application DCL-24-004, Supplement to License Amendment Request 23-01 Revision to Technical Specifications to Adopt Risk-Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b2024-01-15015 January 2024 Supplement to License Amendment Request 23-01 Revision to Technical Specifications to Adopt Risk-Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b IR 05000275/20230112024-01-12012 January 2024 NRC License Renewal Phase 1 Inspection Report 05000275/2023011 DCL-23-129, Nuclear Material Transaction Report for New Fuel2023-12-27027 December 2023 Nuclear Material Transaction Report for New Fuel ML23326A0122023-12-21021 December 2023 12-21-23 Letter to the Honorable Byron Donalds from Chair Hanson Responds to Letter Regarding 2.206 Petition to Close Diablo Canyon Nuclear Power Plant, Unit 1 ML23341A0042023-12-19019 December 2023 LRA Acceptance Letter ML23352A2342023-12-18018 December 2023 Notification of Age-Related Degradation Inspection (05000275/2024014 and 05000323/2024014) and Request for Information DCL-23-122, Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation2023-12-14014 December 2023 Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation DCL-23-128, Emergency Plan Update2023-12-13013 December 2023 Emergency Plan Update ML23355A0952023-12-0808 December 2023 License Renewal Application Online Reference Portal DCL-23-125, Core Operating Limits Report for Unit 1 Cycle 252023-12-0606 December 2023 Core Operating Limits Report for Unit 1 Cycle 25 ML23291A2702023-11-28028 November 2023 Letter to Nakia Zavalla, Shpo, the Santa Ynez Band of Chumash Indians; Re., Diablo Canyon ISFSI Initiating Section 106 Consultation ML23320A2442023-11-28028 November 2023 Letter to Kerri Vera, Director of Department of Environmental Protection, Tule River Tribe; Re., Diablo Canyon ISFSI Initiating Section 106 Consultation ML23325A1382023-11-27027 November 2023 ISFSI Tribal Letter to San Luis Obispo County Chumash Indians ML23325A1322023-11-27027 November 2023 ISFSI Tribal Letter to Salian Tribe of Montgomery, San Luis Obispo ML23325A1332023-11-27027 November 2023 ISFSI Tribal Letter to Yak Tityu Tityu Northern Chumash Indians ML23307A0062023-11-27027 November 2023 ISFSI Tribal Letter to Northern Chumash Tribal Council ML24003A7242023-11-27027 November 2023 Independent Safety Committee; Diab Lo Canyon Nuclear Power Plant Operations, Thirty-Third Annual Report on the Safety ML23325A1292023-11-27027 November 2023 ISFSI Tribal Letter to Coastal Band of Chumash ML23320A1502023-11-17017 November 2023 Individual Notice of Consideration of Issuance of Amendment to Facility Operating License, Proposed No Significant Hazards Consideration Determination, & Opportunity for Hearing (Exigent Circumstances) (EPID L-2023-LLA-0155) - LTR DCL-23-121, Supplement to License Amendment Request 23-03, Revision to Technical Specification3.7.8, Auxiliary Saltwater System2023-11-16016 November 2023 Supplement to License Amendment Request 23-03, Revision to Technical Specification3.7.8, Auxiliary Saltwater System ML23296A0982023-11-15015 November 2023 Notification and Request for Consultation Regarding Pacific Gas and Electric Diablo Canyon Independent Spent Fuel Storage Installation Material License Renewal Request (Docket Number: 72-26) DCL-23-120, License Amendment Request 23-03 Revision to Technical Specification 3.7.8, Auxiliary Saltwater (Asw) System2023-11-14014 November 2023 License Amendment Request 23-03 Revision to Technical Specification 3.7.8, Auxiliary Saltwater (Asw) System ML23293A1052023-11-14014 November 2023 Receipt and Availability of License Renewal Application IR 05000275/20230032023-11-13013 November 2023 Integrated Inspection Report 05000275/2023003 and 05000323/2023003 ML23311A2082023-11-0909 November 2023 Reassignment of U.S. Nuclear Regulatory Commission Branch Chief in the Division of Operating Reactor Licensing for Plant Licensing Branch IV DCL-23-118, License Renewal Application2023-11-0707 November 2023 License Renewal Application ML23318A2102023-10-31031 October 2023 Independent Safety Committee; Thirty-Third Annual Report on the Safety of Diablo Canyon Nuclear Power Plant Operations DCL-2023-520, Discharge Self-Monitoring at Diablo Canyon Power Plant (DCPP)2023-10-19019 October 2023 Discharge Self-Monitoring at Diablo Canyon Power Plant (DCPP) DCL-23-103, Independent Spent Fuel Storage Installation - Withdrawal of License Amendment Request 22-01, Request for Approval of Alternative Security Measures for Early Warning System2023-10-13013 October 2023 Independent Spent Fuel Storage Installation - Withdrawal of License Amendment Request 22-01, Request for Approval of Alternative Security Measures for Early Warning System IR 05000275/20240152023-10-10010 October 2023 Information Request for the Cybersecurity Baseline Inspection, Notification to Perform Inspection (050002752024015 and 050003232024015) 2024-02-09
[Table view] Category:Inspection Plan
MONTHYEARML23249A2782023-09-0606 September 2023 Inservice Inspection Request for Information IR 05000275/20230052023-08-22022 August 2023 Updated Inspection Plan for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2023005 and 05000323/2023005) - Mid Cycle Letter IR 05000275/20220062023-03-0101 March 2023 Annual Assessment Letter for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2022006 and 05000323/2022006) ML23005A1732023-01-0909 January 2023 Notification of Commercial Grade Dedication Inspection IR 05000275/20220052022-08-23023 August 2022 Updated Inspection Plan for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2022005 and 05000323/2022005) ML22194A8872022-07-11011 July 2022 September 2022 Emergency Preparedness Exercise Inspection - Request for Information Email ML22068A2312022-03-17017 March 2022 Notification of NRC Design Bases Assurance Inspection (Team) 05000275/2022011 and 05000323/2022011 and Initial Request for Information IR 05000275/20210062022-03-0202 March 2022 Annual Assessment Letter for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2021006 and 05000323/2021006) ML22019A0412021-12-29029 December 2021 RFI ML21230A3902021-09-0101 September 2021 DC Mid-Cycle Inspection Plan Transmittal Letter 2021 ML21229A2242021-08-17017 August 2021 Notification of NRC Triennial Heat Exchanger/Heat Sink Performance Inspection (05000275/2021004 and 05000323/2021004) and Request for Information ML21130A3642021-06-21021 June 2021 DC 2021401 Information Request ML21069A2102021-03-12012 March 2021 Notification of Inspection (NRC Inspection Report 05000275/2021002, 05000323/2021002) and Request for Information IR 05000275/20200062021-03-0303 March 2021 DC 2020 Annual Assessment Letter for Diablo Canyon Power Plant, Units 1 & 2 (Report 05000275/2020006 & 05000323/2020006) ML21061A3302021-02-25025 February 2021 Request for Information: Diablo Canyon Power Plant, Dated January 6, 2021; IR 05000275/323/2021-001 Occupational Radiation Safety Inspection - 2, 4 ML20301A2212020-10-27027 October 2020 Notification of an NRC Fire Protection Baseline Inspection (NRC Inspection Report 05000275/2021010 and 05000323/2021010) and Request for Information IR 05000275/20200052020-09-0101 September 2020 Updated Inspection Plan for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2020005 and 05000323/2020005) ML20280A5432020-06-0303 June 2020 DC 2020 PIR Request for Information ML20055E1082020-03-0303 March 2020 DC 2019006 Annual Assessment Letter IR 05000275/20190052019-08-30030 August 2019 Updated Inspection Plan for Diablo Canyon Power Plant, Units 1 and 2, Report 05000275/2019005 and 05000323/2019005 IR 05000275/20180062019-03-0404 March 2019 Annual Assessment Letter for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2018006 and 05000323/2018006) ML19043A9452019-02-20020 February 2019 Notification of Inspection (NRC Inspection Report 05000275/2019002, 05000323/2019002 and Request for Information IR 05000275/20180052018-08-31031 August 2018 Updated Inspection Plan for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2018005 and 05000323/2018005) IR 05000275/20170062018-03-0101 March 2018 Annual Assessment Letter for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2017006 and 05000323/2017006) IR 05000275/20170052017-08-28028 August 2017 Updated Inspection Plan for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2017005 and 05000323/2017005) ML17243A3022017-08-28028 August 2017 Updated Non-Public Security Inspection Plan for Diablo Canyon Power Plant, Units 1 and 2 IR 05000275/20160062017-03-0101 March 2017 Annual Assessment Letter for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2016006 and 05000323/2016006) ML17037D1232017-02-0606 February 2017 Notification of Inspection (NRC Inspection Report 05000275/2017002; 05000323/2017002) and Request for Information ML16239A2532016-08-31031 August 2016 Mid-Cycle Assessment Letter for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2016005 and 05000323/2016005) IR 05000275/20160052016-08-31031 August 2016 Mid-Cycle Assessment Letter for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2016005 and 05000323/2016005) IR 05000275/20164012016-08-31031 August 2016 Non-Public Security Inspection Plan for Diablo Canyon Nuclear Power Plant, Units 1 and 2 (NRC Physical Security Inspection Report Number 05000275/2016401 and 05000323/201640) IR 05000275/20150062016-03-0202 March 2016 Annual Assessment Letter for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2015006 and 05000323/2015006) IR 05000275/20154012015-09-0101 September 2015 Non-Public Security Inspection Plan for Diablo Canyon Nuclear Power Plant, Units 1 and 2 (NRC Physical Security Inspection Report Number 05000275/2015401 and 05000323/2015401) IR 05000275/20150052015-09-0101 September 2015 Mid-Cycle Assessment Letter for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2015005 and 05000323/2015005) IR 05000275/20140012015-03-0404 March 2015 Annual Assessment Letter for Diablo Canyon Power Plant, Units 1 and 2, (Report 05000275/2014001 and 05000323/2014001) IR 05000275/20144022014-09-0202 September 2014 Non-Public Security Inspection Plan for Diablo Canyon Nuclear Power Plant, Units 1 and 2 (NRC Physical Security Inspection Report Number 05000275/2014402 and 05000323/2014402) IR 05000275/20140062014-09-0202 September 2014 Mid-Cycle Assessment Letter for Diablo Canyon Power Plant, Units 1 and 2 (Report 05000275/2014006 and 05000323/2014006) IR 05000275/20130012014-03-0404 March 2014 IR 05000275-13-001 & 05000323-13-001, 02/12/2014, Diablo Canyon, Unit 1 & 2, Annual Assessment Inspection Plan ML13246A2882013-09-0303 September 2013 Midcycle Assessment Letter 2013 ML13206A1892013-07-25025 July 2013 IR 05000275-13-004, and 05000323-13-004, Diablo Canyon Power - Notification of NRC Triennial Heat Sink Performance Inspection IR 05000275/20128012013-03-0404 March 2013 Annual Assessment Letter for Diablo Canyon Power Plant Units 1 & 2 (IR 05000275-12-801 and 05000323-12-801) ML13032A3142013-02-0101 February 2013 IR 05000275-13-007, 05000323-13-007, on 05/20/2013, Diablo Canyon - Notification of NRC Component Design Bases Inspection and Initial RAI IR 05000275/20120062012-09-0404 September 2012 Mid-Cycle Performance Review and Inspection Plan - Diablo Canyon Power Plant (05000275/2012006, 05000323/2012006) IR 05000275/20120012012-03-0505 March 2012 Annual Assessment Letter for Diablo Canyon Power Plant - Units 1 and 2 (Report 05000275/2012001 and 05000323/2012001) ML1124401692011-09-0101 September 2011 Mid-Cycle Performance Review and Inspection Plan - Diablo Canyon Power Plant - Units 1 and 2 ML1029503242010-10-21021 October 2010 Notification of NRC Triennial Heat Exchanger Inspection 05000275-10-005 & 05000323-10-005 ML1024403362010-09-0101 September 2010 Mid-Cycle Performance Review and Inspection Plan - Diablo Canyon Power Plant IR 05000275/20100012010-03-0303 March 2010 Annual Assessment Letter - Diablo Canyon Power Plant (NRC IR 05000275-10-001 and 05000323-10-001 ML0924001372009-09-0101 September 2009 Midcycle Assessment IR 05000275/20090012009-03-0404 March 2009 Annual Assessment Letter and Inspection Plan 2008 (NRC Inspection Reports 05000275-09-001 and 05000323-09-001) 2023-09-06
[Table view] |
See also: IR 05000275/2010005
Text
UNITED STATES
NU C LE AR RE G UL AT O RY C O M M I S S I O N
R E GI ON I V
612 EAST LAMAR BLVD , SU I TE 400
AR LI N GTON , TEXAS 76011-4125
October 21, 2010
John T. Conway
Senior Vice President-Energy &
Supply and Chief Nuclear Officer
Pacific Gas and Electric Company
Diablo Canyon Power Plant
77 Beale Street, Mail Code B32
San Francisco, CA 94105
SUBJECT: DIABLO CANYON- NOTIFICATION OF NRC TRIENNIAL HEAT
EXCHANGER INSPECTION 05000275/2010005;O5000323/2010005
Dear Mr. Conway:
The purpose of this letter is to notify you that the U.S. Nuclear Regulatory Commission
(NRC) Region IV staff will conduct a triennial heat sink inspection at your facility. The
inspection will be comprised of one reactor inspector from the NRC Region IV office.
The inspection will be conducted in accordance with Inspection Procedure 71111.07T,
"Heat Sink Performance."
The schedule for the inspection is as follows:
Onsite inspection: December 6, 2010 - December 10, 2010
Experience has shown that this inspection is resource intensive for your staff. In order
to minimize the impact to your onsite resources and to ensure a productive inspection,
we have enclosed a request for documents needed for this inspection. Please note that
the documents are requested to be provided by November 15, 2010. We request that
during the onsite inspection week, you ensure that copies of analyses, evaluations, or
documentation regarding the implementation and maintenance of your heat exchanger
program are available. Of specific interest are those documents that establish that your
heat exchanger program satisfies NRC regulatory requirements and conforms to
applicable NRC guidance. Also, appropriate personnel knowledgeable of safety-related
heat exchangers should be available to support the inspector at the site during the
inspection.
We have discussed the schedule for this inspection activity with your staff and
understand that our regulatory contact for this inspection will be Michael McCoy of your
licensing organization. If there are any questions about this inspection or the material
requested, please contact the inspector, Paula Goldberg, at 817-860-8168 or by
Pacific Gas and Electric Company -2-
email, paula.goldberg@nrc.gov. In accordance with 10 CFR 2.390 of the NRCs Rules
of Practice, a copy of this letter and its enclosure will be available electronically for
public inspection in the NRC Public Document Room or from the Publicly Available
Records (PARS) component of NRC's document system (ADAMS). ADAMS is
accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html (the
Public Electronic Reading Room).
Sincerely,
/RA/
Thomas R. Farnholtz, Chief
Engineering Branch 1
Division of Reactor Safety
Docket: 50-275; 50-323
License: DPR-80; DPR-82
Enclosure: Heat Exchanger/Heat Sink
Inspection Documentation Request
cc w/enclosure:
Sierra Club Santa Lucia Chapter
ATTN: Andrew Christie
P.O. Box 15755
San Luis Obispo, CA 93406
Jane Swanson
San Luis Obispo
Mothers for Peace
P.O. Box 3608
San Luis Obispo, CA 93403
James Grant, County Administrative Officer
San Luis Obispo County Board of
Supervisors
1055 Monterey Street, Suite D430
San Luis Obispo, CA 93408
Truman Burns\Robert Kinosian
California Public Utilities Commission
505 Van Ness Ave., Rm. 4102
San Francisco, CA 94102
Pacific Gas and Electric Company -3-
Jennifer Post, Esq.
Pacific Gas & Electric Co.
77 Beale Street, Room 2496
Mail Code B30A
San Francisco, CA 94120
Gary Butner
Chief, Radiologic Health Branch
California Department of Public Health 3
P.O. Box 997414 (MS 7610)
Sacramento, CA 95899-7414
The City Editor of The Tribune
3825 South Higuera Street
P.O. Box 112
San Luis Obispo, CA 93406-0112
James D. Boyd, Commissioner
California Energy Commission
1516 Ninth Street (MS 31)
Sacramento, CA 95814
James R. Becker, Site Vice President
Pacific Gas and Electric Company
Diablo Canyon Nuclear Plant
P.O. Box 56, Mail Station 104/6/601
Avila Beach, CA 93424
Jennifer Tang
Field Representative
United States Senator Barbara Boxer
1700 Montgomery Street, Suite 240
San Francisco, CA 94111
Chief, Technological Hazards Branch
FEMA Region IX
1111 Broadway, Suite 1200
Oakland, CA 94607-4052
Pacific Gas and Electric Company -4-
Electronic distribution by RIV:
Regional Administrator (Elmo.Collins@nrc.gov)
Deputy Regional Administrator (Chuck.Casto@nrc.gov)
DRP Director (Kriss.Kennedy@nrc.gov)
DRP Deputy Director (Anton.Vegel@nrc.gov)
DRS Director (Roy.Caniano@nrc.gov)
DRS Deputy Director (Troy.Pruett@nrc.gov)
Senior Resident Inspector (Michael.Peck@nrc.gov)
Resident Inspector (Tony.Brown@nrc.gov)
Acting Branch Chief, DRP/B (Don.Allen@nrc.gov)
Senior Project Engineer, DRP/B (Rick.Deese@nrc.gov)
Project Engineer, DRP/B (Greg.Tutak@nrc.gov)
Project Engineer, DRP/B (Nestor.Makris@nrc.gov)
Reactor Inspector, DRP/B (Christie.Denissen@nrc.gov)
DC Administrative Assistant (Agnes.Chan@nrc.gov)
Public Affairs Officer (Victor.Dricks@nrc.gov)
Public Affairs Officer (Lara.Uselding@nrc.gov)
Project Manager (Fred.Lyon@nrc.gov)
Branch Chief, DRS/TSB (Michael.Hay@nrc.gov)
RITS Coordinator (Marisa.Herrera@nrc.gov)
Regional Counsel (Karla.Fuller@nrc.gov)
Acting Regional Counsel (David.Roth@nrc.gov)
Congressional Affairs Officer (Jenny.Weil@nrc.gov)
OEMail Resource
OEDO RIV Coordinator (Geoffrey.Miller@nrc.gov)
File located:_R:/Reactors/2010/DC2010005 RFI-PAG ML
SUNSI Rev Compl. X Yes No ADAMS X Yes No Reviewer Initials
Publicly Avail X Yes No Sensitive Yes X No Sens. Type Initials
RIV: DRS/EB1/RI C: EB1
PGoldberg TRF for TFarnholtz
/RA/ by email /RA/
10/21/2010 10/21/2010
OFFICIAL RECORD COPY T=Telephone E=E-mail F=Fax
Heat Exchanger/Heat Sink Inspection Documentation Request
The following heat exchangers/heat sinks have been selected for inspection:
- Component cooling water heat exchangers
Please provide the following documentation prior to the onsite inspection week,
preferably no later than November 22, 2010 .
Test Documents
Copies of the last two heat exchanger tests for the selected heat exchangers (original
test data in work orders or filled in test procedures) and copies of condition reports
associated with the heat exchanger testing
List of condition reports, with descriptions, associated with heat exchanger testing for
the past 3 years (all safety-related heat exchangers)
Copies of applicable heat exchanger test procedures for the selected heat exchangers
including test conditions and acceptance criteria
Copies of chemistry control procedures and results of chemistry sampling and a list of
condition reports concerning service water chemistry problems for the past 3 years
Documents that show the as-found results are recorded, evaluated, and appropriately
dispositioned such that the as-left condition is acceptable
Cleaning Documents
Copies of the last two heat exchanger cleaning results for the selected heat
exchangers, original data (found in filled test procedures or work orders) and condition
reports associated with heat exchanger cleaning
Cleaning procedures with acceptance criteria for the selected heat exchangers
List of condition reports, with descriptions, associated with heat exchanger cleaning for
the past 3 years (all safety-related heat exchangers)
Show that as-found results are recorded, evaluated, and appropriately dispositioned
such that the as-left condition is acceptable
-1- Enclosure
Design Documents
Copies of vendor data sheets and design basis data for the selected heat exchangers
The design margin of the heat exchangers (the maximum heat transfer rate achievable
at design basis conditions compared to the vendors design heat transfer rate)
Copies of calculations which show the heat exchangers will meet their design basis
requirements under worst case conditions. Calculation for the maximum allowable
number of tubes plugged and how many tubes are currently plugged
For room coolers, calculations of the maximum room temperature under accident
conditions and determination that the coolers can maintain less than the maximum
temperature under design conditions
Documents that show that the heat exchangers have been evaluated for potential water
hammer
Instrument uncertainties of the instruments used during testing
Corrective action reports concerning cavitation noise in any heat exchanger system
The most recent audit report of heat exchanger testing and cleaning
The most recent service water flow balance test results, both as-found and as-left
Documents for the Ultimate Heat Sink
Testing documents or other equivalent methods that verify the performance of the
ultimate heat sink and its components
Calculations which shows there is sufficient water capacity for the required 30-day
supply
Procedure or work order that show there is monitoring and trending of sediment build-up
Procedure for periodic performance monitoring of heat transfer capability
Procedures for the periodic performance of the ultimate heat sink structural integrity
Document that verifies adequate chemistry monitoring to ensure adequate pH, calcium,
etc. are maintained
Documents that explains the operation of the ultimate heat sink
-2- Enclosure
A description of the clean up system between the water supply and the ultimate heat
sink
If elements of the ultimate heat sink can freeze during cold weather, documentation or
calculations to show that there will still be sufficient water to meet design conditions
under the worst case freeze conditions
A description of the sump pump that circulates the water in the ultimate heat sink during
freeze conditions, and documentation which show that the sump pump and valves are
safety-related
Calculations of the maximum allowable amount of silt that can be in the ultimate heat
sink, and any condition reports written in the past three years about problems with silt
List of condition reports, with descriptions, of problems with the ultimate heat sink for the
past three years
Corrective Action Documents
List of corrective action documents, with descriptions, for the past 3 years for all
safety-related heat exchangers
Inspector Contact Information:
Paula Goldberg
Reactor Inspector
817-860-8168
paula.goldberg@nrc.gov
Mailing Address:
US NRC Region IV
Attn: Paula Goldberg
612 East Lamar Blvd., Suite 400
Arlington, TX 76011-4125
-3- Enclosure