ML20005E415
| ML20005E415 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 12/27/1989 |
| From: | Stolz J Office of Nuclear Reactor Regulation |
| To: | Hukill H GENERAL PUBLIC UTILITIES CORP. |
| Shared Package | |
| ML20005E416 | List: |
| References | |
| GL-89-04, GL-89-4, TAC-68379, NUDOCS 9001050206 | |
| Download: ML20005E415 (2) | |
Text
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1 UNITED CTATES 7
- 2 yo NUCLEAR REGULATORY COMMISSION h
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WASHINGTON, D. C. 20555
% *.'.. + S December 27, 1989-
' Docket No. 50-289.
I Mr.. Henry.D. Hukill, Vice President s
, and Director tTMI-1 M
GPU Nuclear Corporation V
P. O. Box'480 Middletown',' Pennsylvania 17057
Dear Mr. Hukill:
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SUBJECT:
RELIEF ON CHECK-VALVE INSPECTI0i!S - THREE MILE ISLAND UNIT 1 i
INSERVICETESTING(IST) PROGRAM (TACNO.68379) l Your letters dated June 7,- 1988 and April 17, 1989 provided justification for l
not adding a set of four emergency diesel-generator air system check valves l
f(EG-V10);to the Three Mile' Island Unit 1 (TMI-1) IST program and for reducing
- the frequency of inspectionLfor four other sets of valves-(DH-V14A/B,-
o BS-V30A/B,BS-V52A/B,MS-V9A/B). The actions requested would constitute a change to previous requirements imposed by the NRC as part of the IST program and documented in staff safety evaluation reports dated October 3, 1986,
- March 19,~1987 Land ~ March 31', 1988.
.The additional justification provided in your letters included a review of past inspection history for these valves at THI-1,'a review of industry experience.
with'similar valves and photographs 'of the internals of these valves taken during-the most recent inspections.
In addition, a check valve specialist
'from NRC headquarters personally witnessed a valve inspection during the July 1988 refueling. outage.
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.The staff has completed its review of your request regarding these check valves and has documented the results of the review in the enclosed SER.
In summary, the.following relief is hereby granted:
- 1).
If.the EG-V10 valves are retained in the air receiver system, they are required to be included in the IST Program but specific Section XI tests-
'are not required because the air receivers are monitored by a continuous pressure monitoring system, which provides an acceptable level of quality and safety. Accordingly, relief is granted pursuant to
-10CFR50.55a(a)(3)(1).
2 )"
The partial flow testing of DH-V14 A/B is an acceptable deviation from the full flow test provided they are performed, monitored and analyzed in a a
certain repeatable manner and complemented by periodic internal inspections.
The relief request for extending the inspection frequency to every '.0 years is denied, but a review of the partial flow test and past inspection.results of these valves justify an extension to a 10 year interval for inspecting both of these valves.
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. a di 3)? iThe licensee's relief request for! extending the inspection frequency!ofi
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t va1ves;BS-V52A/B, BS-Y30A/B.and MS-V9A/B to every 10: years is denied ;but' r
-based on: Generic Letter 89-04 and.a review of past inspection results of Wg thes'e' valves,.the staff finds that it is acceptable to extend the f9, inspection frequency to every other refueling. outage.
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Sincerely,
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JOHN F. D04*
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John F. Stolz, Director N
Project Directorate I.4 Division of Reactor Projtets - I/II Office of Nuclear. Reactor Regulation
Enclosure:
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See next page' i
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NRC ocal PDRs 6 (14E4)
M S. Varga:
B. Boger (14A2)
.S.>Norris'
.R. Hernan
.0GC ACRS(10)(MNBB3302).
E. Jordan
.T._. Marsh (9H3) 0FC :LA:PDI.4
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. DATEf:11/ 1989
- 14/27/89
- 11/20 /8S' J2/16/89
- 1'2/14/89
~0FFICIALzRECORDl0PY
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Document Name: TAC-68379
- 'See, previous concurrence sheet 1
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