ML17284A831
| ML17284A831 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 07/30/1999 |
| From: | Stephen Dembek NRC (Affiliation Not Assigned) |
| To: | Parrish J WASHINGTON PUBLIC POWER SUPPLY SYSTEM |
| Shared Package | |
| ML17284A832 | List: |
| References | |
| TAC-MA4883, NUDOCS 9908040036 | |
| Download: ML17284A831 (5) | |
Text
Mr. J. V. Parrish Chief Executive Officer
~
Washington Public Power Supply System P.O. Box 968 (Mail Drop 1023)
Richland, WA 99352-0968 July 30, 1999
SUBJECT:
NRC STAFF EVALUATIONOF INSERVICE INSPECTION PROGRAM (ISI)
RELIEF REQUEST 2ISI WNP-2 (TAC NO. MA4883)
Dear Mr. Parrish:
By letter dated August 18, 1997, the NRC authorized Relief Request 2ISI-15 for WNP-2 which allowed the surface examination required by the ASME Code,Section XI, Category C-G, Item Number 6.10 for pump casing welds on residual heat removal (RHR) pumps RHR-P-2A, -2B, and -2C and high pressure coolant system (HPCS) pump HPCS-P-1, and low pressure coolant system (LPCS) pump LPCS-P-1 to be performed when the pumps are disassembled for maintenance since there is no access to these welds from the outside surface.
By letter dated February 22, 1999, Washington Public Power Supply System (the licensee or Supply System), submitted Relief Request 2ISI-20 proposing an alternative to the surface examination requirement of the 1989 Edition ASME Code,Section XI, Category C-G, Item Number C6.10 for the above pump casing welds when the pumps are disassembled for maintenance in accordance with Relief Request 2ISI-15. The licensee's proposed alternative requires a VT-1 visual examination in lieu of the code required surface examination of the subject welds due to high radiation field in the vicinity.
The staff has reviewed the Supply System's request and has determined that compliance with the Code requirements would result in hardship or unusual difficultywithout a compensating increase in the level of quality or safety. The staff has determined that the Supply System's proposed alternative provides reasonable assurance of pressure boundary integrity.
Therefore, the proposed alternative for Relief Request 2ISI-20 is authorized pursuant to 10 CFR 50.55(a)(3)(ii) for WNP-2 during the second ten-year inspection interval.
The staff's evaluation is contained in the enclosed safety evaluation.
Stephen Dembek, Chief, Section 2 Project Directorate IV& Decommissioning Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-397
Enclosure:
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UNITED STATES NUCLEAR REGULATORY COIVIMISSION WASHINGTON, D.C. 20555-0001 July 30, 1999 Mr. J. V. Parrish Chief Executive Officer Washington Public Power Supply System P.O. Box 968 (Mail Drop 1023)
Richland, WA 99352-0968
SUBJECT:
NRC STAFF EVALUATIONOF INSERVICE INSPECTION PROGRAM (ISI)
RELIEF REQUEST 2ISI WNP-2 (TAC NO. MA4883)
Dear Mr. Parrish:
By letter dated August 18, 1997, the NRC authorized Relief Request 2!SI-15 for WNP-2 which allowed the surface examination required by the ASME Code,Section XI, Category C-G, Item Number 6.10 for pump casing welds on residual heat removal (RHR) pumps RHR-P-2A, -2B, and -2C and high pressure coolant system (HPCS) pump HPCS-P-1, and low pressure coolant system (LPCS) pump LPCS-P-1 to be performed when the pumps are disassembled for maintenance since there is no access to these welds from the outside surface.
By letter dated February 22, 1999, Washington Public Power Supply System (the licensee or Supply System), submitted Relief Request 2ISI-20 proposing an alternative to the surface examination requirement of the 1989 Edition ASME Code,Section XI, Category C-G, Item Number C6.10 for the above pump casing welds when the pumps are disassembled for maintenance in accordance with Relief Request 2ISI-15. The licensee's proposed alternative requires a VT-1 visual examination in lieu of the code required surface examination of the subject welds due to high radiation field in the vicinity.
The staff has reviewed the Supply System's request and has determined that compliance with the Code requirements would result in hardship or unusual difficultywithout a compensating increase in the level of quality or safety. The staff has determined that the Supply System's proposed'alternative provides reasonable assurance of pressure boundary integrity.
Therefore, the proposed alternative for Relief Request 2ISI-20 is authorized pursuant to 10 CFR 50.55(a)(3)(ii) for WNP-2 during the second ten-year inspection interval. The staff's evaluation is contained in the enclosed safety evaluation.
Sincerely, tephen Dembek, Chief, Section 2 Project Directorate IV8 Decommissioning Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-397
Enclosure:
Safety Evaluation ccw/encl: See next page
Nuclear Project No. 2 CC:
Mr. Greg O. Smith (Mail Drop 927M)
Vice President, Generation Washington Public Power Supply System P. O. Box 968 Richland, Washington 99352-0968 Mr. Albert E. Mouncer (Mail Drop 1396)
Chief Counsel Washington Public Power Supply System P.O. Box 968 Richland, Washington 99352-0968 Ms. Deborah J. Ross, Chairman Energy Facility Site Evaluation Council P. O. Box 43172 Olympia, Washington 98504-3172 Mr. D. W. Coleman (Mail Drop PE20)
Regulatory Affairs Manager Washington Public Power Supply System P.O. Box 968 Richland, Washington 99352-0968 Mr. Paul Inserra (Mail Drop PE20)
Manager, Licensing Washington Public Power Supply System P.O. Box 968 Richland, Washington 99352 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission Harris Tower & Pavilion 611 Ryan Plaza Drive, Suite 400 Arlington, Texas 76011-8064 Chairman Benton County Board of Commissioners P.O. Box 69 Prosser, Washington 99350-0190 Senior Resident Inspector U.S. Nuclear Regulatory Commission P.O. Box 69 Richland, Washington 99352-0968 Mr. Rodney L. Webring (Mail Drop PE08)
Vice President, Operations Support/PIO Washington Public Power Supply System P. O. Box 968 Richland, Washington 99352 Perry D. Robinson, Esq.
Winston & Strawn 1400 L Street, N.W.
Washington, DC 20005-3502 Mr. Bob Nichols Executive Policy Division Office of the Governor P.O. Box 43113 Olympia, Washington 98504-3113
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