ML17279A181
| ML17279A181 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 04/07/1987 |
| From: | Bradfute J Office of Nuclear Reactor Regulation |
| To: | Sorensen G WASHINGTON PUBLIC POWER SUPPLY SYSTEM |
| References | |
| RTR-REGGD-01.097, RTR-REGGD-1.097 TAC-61850, NUDOCS 8704080259 | |
| Download: ML17279A181 (9) | |
Text
April 7, 1987
~704080259 PDR ADOCK P
Docket No.
870e07 0SO0OS97 PDR 50-397 Mr. G.
C. Sorensen, Manager Regulatory Programs Washington Public Power Supply System P.O.
Box 968 3000 George Washington Way Richland, Washington 99352
Dear Mr. Sorensen:
Subject:
Neutron Flux Monitorinq gualification DISTRIBUTION:
II-39i, NRC PDR Local PDR BWD-3 r/f EAdensam JBradfute EHylton RBernero
Reference:
Letter G02-86-568, from Sorensen, Supply System to Adensam,
- NRC,
Subject:
"license Condition 2.C(16), Attachment 2, Item 3 (6)
Neutron Flux Monitoring, Satisfaction of" dated June 19, 1986 Amendment No.
23 to the Facility Operating License for WNP-2 requires that the Neutron Flux Monitoring Instrumentation be upgraded to meet the require-ments of Regulatory Guide 1.97, Revision 2, prior to startup following the second refueling outage.
The Supply System evaluated the currently installed equipment with respect to this license condition and, in light of the staff s conclusion made in the Limerick SER dated May 1985, concluded that the existing neutron monitoring system at WNP-2 is adequate to meet post accident needs for the measurement of neutron flux.
The events that could threaten plant safety if conditions degrade are:
- LOCA, overpressure transients, anticipated operational occurrences that become ac-cidents such as anticipated transients without scram (ATWS), and reactivity excursions.
All of these events could result in the release of radioactive materials.
Thus, accident monitoring instrumentation is required to provide essential information to be used by the operators for accident mitigation.
In particular, the neutron flux measurements provide valuable information regarding the status of the reactor during accident and post-accident conditions, as well as, during normal operation.
It is essential that the required instrumentation be"capable of surviving in the accident environment to which it is exposed and for the length of time its function is required.
Therefore, the neutron flux instrumentation should comply with Category 1
instrumentation of Regulatory Guide 1.97, and should be qualified in ac-cordance with Regulatory Guide 1.89.
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In the referenced letter, you stated that neutron flux instrumentation is needed only for long term use in the event of an anticipated transient without scram (ATWS).
However, it is the staff's determination that neutron flux instru-mentation is required for monitoring purposes related to the mitigation of any accident event or other reactivity addition situation as discussed above.
In addition the Limerick SER does not provide a safety rationale for removing neutron flux instrumentation from Category 1 instrumentation per Regulatory Guide 1.97.
Thus, the staff finds the licensee's justification'unacceptable and the Commission requires that the neutron flux monitoring instrumentation at WNP-2 be upgraded to Category 1 as stipulated in the WNP-2 License Condition 2.C(16), Attachment 2, Item 3(b).
Sincerely,
/s/
cc:
See next page John 0. Bradfute, Project Manager BWR Project Directorate No.
3 Division of BWR Licensing BWD-3:DBL JBradfute/vag 04/j /87 LA:
L EH 04
/87 D:BWD 3:DBL EAdensam 04/) /87
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Mr. G. C. Sorensen, Manager Washington Public Power Supply System WPPSS Nuclear Project No.
2 (WNP-2)
CC:
Nicholas S. Reynolds, Esq.
Bishop, Liberman,
- Cook, Purcell 5 Reynolds 1200 Seventeenth
- Street, N.W.
Washington, D.C.
20036 Mr. G.
E. Doupe, Esquire Washington Public Power Supply System P. 0.
Box 968 3000 George Washington Way Richland, Washington 99532 Mr. Curtis Eschels, Chairman Energy Facility Site Evaluation Council Mail Stop PY-11 Olympia, Washington 98504 Mr. P. L. Powell, Licensing Manager Washington Public Power Supply System P. 0.
Box 968, MD 956B Richland, Washington 99352 Resident Inspector, U. S. Nuclear Regulatory Commission P. 0.
Box 69 Richland, Washington 99352 R. B. Glasscock, Director Licensing and Assurance Washington Public Power Supply System P. 0.
Box 968, MD,280 Richland, Washington 99352 Mr. C.
M. Powers WNP-2 Plant Manager Washington Public Power Supply System P. 0.
Box MD 927M Richland, Washington 99352 Regional Administrator, Region V
U.S. Nuclear Regulatory Commission 1450 Maria Lane, Suite 210 Walnut Creek, California 94596
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~ e DISTRIBUTION:
Docket File PDR LPDR PD V Reading JLee (2)
April 3O, 1987 DOCKET NO(S).
50-397 Mr. G. C. Sorensen, Manager Regulatory Programs washington Public Power Supply System P. 0. Box 968 Richland, Mashington 99352
SUBJECT:
WASHINGTON PUBLIC POLER SUPPLY SYSTEM HPPSS NUCLEAR PROJECT NO 2
The following documents concerning our review of the subject facility are transmitted for your information.
transmitted by letter dated Office of Nuclear Reactor Regulation
Enclosures:
As stated cc:
See next page
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/87-
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NRC FORM 3IS Ilo/BOINRCM 0240 OFFICIAL RECORD COPY Notice of Receipt of Application, dated Draft/Final Environmental Statement, dated Notice of Availability of Draft/Final Environmental Statement, dated Safety Evaluation Report, or Supplement No.
dated Environmental Assessment and Finding of No Significant Impact, dated,
'otice of Consideration of Issuance of Facility Operating License or Amendment to Faci 1 ity Operating License, dated Qx Bi-weekly.Notice; Applications and Amendments to Operating Licenses Involving No Significant Hazards. Considerations, dated 4 8/87
[see page(s)]
11377 11378 11383
~ and Bf.-.Weelgy Notice dated 4/22/87, see pages
, 11352, and 113
~
6 Correction, 4/29/87 Q txemprion, aatea Construction Permit No.
CPPR-
, Amendment No.
dated Facility Operating License No.
, Amendment No.
dated Order Extending Construction Completion Date, dated Monthly Operating Report for transmitted by letter dated
+ Annual/Semi-Annual Report-
/ ~
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Mr. G. C. Sorensen, Hanager Washington Public Power Supply System WPPSS Nuclear Project No.
2 (WNP-2)
CC:
Nicholas S. Reynolds, Esq.
Bishop, Liberman,
- Cook, Purcell 5 Reynolds 1200 Seventeenth
- Street, N.M.
Washington, D.C.
20036
~
Hr. G. E. Doupe, Esquire Washington Public Power Supply System P. 0.
Box 968 3000 George Washington May Richland, Mashington 99532 Hr. Curtis Eschels, Chairman Energy Facility Site Evaluation Council Hail Stop PY-11 Olympia, Washington 98504 P. L. Powell, Licensing Manager Mashington Public Power Supply System P. 0. Box 968, HD 956B Richland, Washington 99352 Hr. W. G. Conn Burns and Roe, Incorporated c/o Mashington Public Power Supply System P. 0.
Box 968, HD 994E Richland, Washington 99352 R. B. Glasscock, Director.
Licensing and Assurance Washington Public Power Supply System P. 0.
Box 968, HD 280 Richland, Washington 99352 Hr. C. H. Powers WNP-2 Plant Hanager Washington Public Power Supply System P. 0.
Box HD 927H Richland, Mashington 99352 Regional Administrator, Region V
U.S. Nuclear Regulatory Comofssfon 1450 Haria Lane,"'Suite 210 Walnut Creek, Calf fornfa 94596 f
Chairman Benton County Board of Commissioners
- Prosser, Washington 99350