ML20198A177
| ML20198A177 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 09/28/1985 |
| From: | Houston R Office of Nuclear Reactor Regulation |
| To: | Novak T Office of Nuclear Reactor Regulation |
| References | |
| CON-WNP-0827, CON-WNP-827 850926-1, TAC-59750, NUDOCS 8509300533 | |
| Download: ML20198A177 (3) | |
Text
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SEP 2 E G %
MEMORANDUM FOR:
Thomas M. Novak, Assistant Director for Licensing, DL FROM:
R. Wayne Houston, Assistant Director for Reactor Safety, OSI-
SUBJECT:
OR ACTION:
EMERGENCY TECHNICAL SPECIFICATION CHANGE, WNP-2 (TAC 59750) 4 Plant Name:
Washington Public Power Supply System, WNP-2 Docket No.:
50-397 Region:
V Responsible Branch: LB#2 i
Project Manager:
J. Bradfute Due Date:
September 26, 1985 Review Status:
Complete In its letter dated September 26, 1985, the Washington Public Power Supply System proposed certain changes to Appendix A of License No. NPF-21, the l
Technical Specifications for WNP-2.
The following summarizes our evaluation l
of the proposed changes:
LC0 Action Statement 3.6.1.8.6 requires the plant to initiate shutdown within i
24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> when the drywell and suppression chamber purge supply and/or exhaust i
isolation valves with resilient seals have a measured leakage rate exceeding 0.05 La per valve.
The intent of this surveillance requirement by testing these valves every six months is to detect significant degradation of the resillent material seals j
and to allow for repair before gross leakage develops.
Therefore, we would have the confidence that should a LOCA occur, leakage through these valves when combined with the sum of leakages of all Type B and C valve tests would j
not exceed the cumulative total of 0.6 La.
The licensee proposes to delete the technical specification provision which requires initiation of a shutdown if the leakage from a valve with a resilient material seal exceeds 0.05 La provided that this valve (s) is secured in the closed position and the total leakage of all Type B and C valves, including l
the affected valve, is less than 0.6 La.
T.he licensee further stated that should a need exist to use a valve with resilient material seal whose leakage exceeds 0.05 La, a leakage test will be performed within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after such use to assure that the 0.6 La acceptance criteria is met.
CONTACT:
F. Eltawila, CSB:DSI x29488
$ 300533 850926 N 6509 ADOCK0500g97 y,0 m
A
EliCLOSURE 2 SA1P
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Prepared by the Containnent Systems Branch WilP-2 Category
_ Narrative Description Evaluation Criteria Han:gement Ir.volvccent l
Approach to Resolution 1
Sound technical understanding of issue of Technical Issues 4
R2sponsiveness 1
Previded all relevent information in a timely manner f.
Enforcement liistory i
4
- Reportable Events Staffing Training y,
4 s
u v/s Thomas M. Novak,
SE? ")
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We have completed our review of the licensee's submittal and conclude that the total containment system integrity and the compliance with the requirement of j
Appendix J is still adhered to in the proposed technical specification. We further conclude that the frequent tests to determine the condition of the resilient material seal is maintained.
We, therefore, recommend the approval of the proposed tech'iical specification change.
Enclosed is our SALP input.
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R. Wayne Houston, Assistant Director i
for Reactor Safety i
Division of Systems Integration I
Enclosure:
As stated
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cc:
R. Bernero H. Thompson i
W. Butler J. Bradfute i
DISTRIBUTION i
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