ML17290A483
| ML17290A483 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 06/25/1993 |
| From: | Clifford J Office of Nuclear Reactor Regulation |
| To: | Parrish J WASHINGTON PUBLIC POWER SUPPLY SYSTEM |
| References | |
| GL-92-04, GL-92-4, TAC-M84304, NUDOCS 9306290173 | |
| Download: ML17290A483 (6) | |
Text
~g,P REMI 4
0 J +g 0
h j=
+>>*a~
UNlTED STATES NUCLEAR REGULATORY COMIVllSSION WASHINGTON, D.C. 20555-0001 June 25, 1993 Docket No. 50-397 Mr. J.
V. Parrish (Mail Drop 1023)
Assistant Managing Director, Operations Washington Public Power Supply System P. 0.
Box 968
- Richland, Washington 99352-0968
Dear Mr. Parrish:
SUBJECT:
RESPONSE
TO GENERIC LETTER 92-04, "RESOLUTION OF THE ISSUES RELATED TO REACTOR VESSEL WATER LEVEL INSTRUMENTATION IN BOILING WATER REACTORS,"
WASHINGTON NUCLEAR PLANT, UNIT 2 (TAC NO. M84304)
This letter acknowledges the receipt of your response to Generic Letter (GL) 92-04, dated September 28, 1992.
GL 92-04 was issued to all boiling water reactor (BWR) licensees on August 19, 1992.
The GL requested licensees to promptly assess the impact on their facilities of a potentially erroneous level indication due to non-condensible
- gases, and to implement compensatory measures and long-term corrective actions, as necessary.
Based on your response, we find the following acceptable:
(1)
Washington Public Power Supply System's (Supply System's) review and acceptance of the BWR Owners'roup (BWROG) generic analysis as being applicable to WNP-2.
This acceptance by the NRC was made based on the current licensing basis for WNP-2, without any consideration of potential conservatisms compared to current licensing criteria.
(2)
The Supply System's endorsement of the BWROG commitment as outlined in the BWROG letters dated August 12,
- 1992, and September 24,
- 1992, regarding schedule and plans for actions to address postulated errors in BWR water level instrumentation.
(3)
The Supply System's endorsement of the BWROG Emergency Procedures Committee guidance letter dated August 19, 1992.
This letter provides guidance for operator action in the event of level indication errors due to non-condensible gases during RPV depressurization.
We also understand you have sensitized your operators to these potential errors consistent with the BWROG guidance.
The staff has determined that the Supply System's response is acceptable to address the short-term actions of GL 92-04.
Generic Letter 92-04 requested that long-term actions, including any hardware modifications, be completed at the first refueling outage starting three months after the date of the Generic Letter.
Your response indicated that the Supply System endorsed the BWROG program for assuring high functional 9306290173 930625 PDR ADOCK 05000397 P
PDR IImQ~~'I g'='I QwIILILj~Igl155j 8
June 25, 1993 Mr. J.
V. Parrish lt reliability for the long term, and that a schedule would be provided to the NRC at the 1993'efueling outage if the BWROG program indicated that modifications were necessary.
Based on information reviewed from the BWROG test program, including analysis of the January 21, 1993,'egassing event at WNP-2, the staff determined generically that immediate compensatory measures and prompt hardware modifications were necessary to assure compliance with existing NRC rules and regulations.
The staff issued NRC Bulletin 93-03 on May 28, 1993.
NRCB 93-03 requested hardware modifications be implemented at the next cold shutdown after July 30, 1993.
The long-term actions of NRCB 93-03 are the same long-term actions requested in GL 92-04.
The staff will, therefore, complete its review of the Supply System's long-term actions once they are provided in accordance with the schedule established in NRCB 93-03.
Sincerely, This completes staff actions regarding GL 92-04.
Any additional review of the BWR RPV level instrumentation issue for WNP-2 will be conducted under a
separate TAC for NRCB 93-03.
Original signed by James W. Clifford, Senior Project Manager Project Directorate V
Division of Reactor Projects III/IV/V Office of Nuclear Reactor Regulation cc:
See next page DISTRIBUTION:
Docket File PDV Reading File EAdensam DFoster-Curseen
- OGC, 15818
P-315 LA PDV OFC NAME DFoster Curseen DATE 93 OFFICIAL RECORD COPY BC SRXB PM PDV JCli ford:lh RJones 2" 93 93 DOCUMENT NAM.
WNP84304.LTR D
PDV
\\
Tguay t, ~<93
Hr. J.
V. Parrish reliability for the long term, and that a schedule would be provided to the NRC at the 1993 refueling outage if the BWROG program indicated that modifications were necessary.
Based on information reviewed from the BWROG test program, including analysis of the January 21, 1993, degassing event at WNP-2, the staff determined generically that immediate compensatory measures and prompt hardware modifications were necessary to assure compliance with existing NRC rules and regulations.
The staff issued NRC Bulletin 93-03 on Nay 28, 1993.
NRCB 93-03 requested hardware modifications be implemented at the next cold shutdown after July 30, 1993.
The long-term actions of NRCB 93-03 are the same long-term actions requested in GL 92-04.
The staff will, therefore, complete its review of the Supply System's long-term actions once they are provided in accordance with the schedule established in NRCB 93-03.
This completes staff actions regarding GL 92-04.
Any additional review of the BWR RPV level instrumentation issue for WNP-2 will be conducted under a
separate TAC for NRCB 93-03.
Sincerely, cc:
See next page J
mes W. Clifford, Senior Project Manager Project Directorate V
Division of Reactor Projects III/IV/V Office of Nuclear Reactor Regulation
Hr. J.
V. Parrish Washington Public Power Supply System WPPSS Nuclear Project No.
2 (WNP-2)
CC:
Mr. J.
W. Baker WNP-2 Plant Manager Washington Public Power Supply System P.O.
Box 968
- Richland, Washington 99352-0968 G.
E.
C.
- Doupe, Esq.
(Hail Drop 396)
Washington Public Power Supply System 3000 George Washington Way P. 0.
Box 968
- Richland, Washington 99352-0968 Hr.
R.
G. Waldo, Chairman Energy Facility Site Evaluation Council Hail Stop PY-ll Olympia, Washington 98504 Hr. Alan G. Hosier (Mail Drop PE20)
WNP-2 Licensing Manager Washington Public Power Supply System P. 0.
Box 968
- Richland, Washington 99352-0968 Hr.
G.
C. Sorensen (Hail Drop PE20)
Regulatory Programs Manager Washington Public Power Supply System P. 0.
Box 968
- Richland, Washington 99352-0968 Regional Administrator, Region V
U.S.
Nuclear Regulatory Commission 1450 Maria Lane, Suite 210 Walnut Creek, California 94596 Chairman Benton County Board of Commissioners P. 0.
Box 190
- Prosser, Washington 99350-0190 Mr. R.
C. Barr U. S. Nuclear Regulatory Commission P. 0.
Box 69
- Richland, Washington 99352-0968 M. H. Philips, Jr.,
Esq.
Winston
& Strawn 1400 L Street, N.W.
Washington, D.C.
20005-3502
+H ~
4 J
'I I