ML16341F195
| ML16341F195 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 05/30/1989 |
| From: | Rood H Office of Nuclear Reactor Regulation |
| To: | Shiffer J PACIFIC GAS & ELECTRIC CO. |
| References | |
| GL-83-28, TAC-53976, TAC-61723, NUDOCS 8906070145 | |
| Download: ML16341F195 (6) | |
Text
May 30, 1989 Docket Nos.
50-275 and 50-323 Mr. J.
D. Shiffer, Vice President Nuclear Power Generation c/o Nuclear Power Generation, Licensing Pacific Gas and Electric Company 77 Beale Street, Room 1451 San Francisco, Cali fornia 94106
Dear Mr. Shiffer:
DISTRIBUTION E'J d
NRC
& LPDR BGrimes GHolahan BMozafari MVirgilio DLasher JLee ACRS (10)
HRood
'Knighton PDV Plant File OGC (for information only)
SUBJECT:
SAFETY EVALUATION OF GENERIC LETTER 83-28, ITEM 4.5.3, "REACTOR TRIP RELIABILITY-ON-LINE FUNCTIONAL TESTING OF THE REACTOR TRIP SYSTEM,"
FOR DIABLO CANYON UNITS 1
AND 2 (TAC NOS.
53976 AND 61723)
Item 4.5.3 of Generic Letter (GL) 83-28 required confirmation from all licensees that on-line functional testing of the reactor trip system, including independent testing of the diverse trip feature, was being performed.
By letter dated November 30, 1984, PGImE submitted a response to Generic Letter 83-28, Item 4.5.3.
Your response endorsed the Westinghouse
- report, WCAP 10271, as being applicable to Diablo Canyon Units 1 and 2.
The NRC staff, with the assistance of our contractor, Idaho National Engineering Laboratory, has reviewed PGIIE's response and WCAP 10271.
We conclude that the existing intervals for on-line testing at Diablo Canyon are consistent with achieving high reactor trip system avai lability.
/
The enclosed safety evaluation and contractor's report (EGG-NTA-8341) provide the details and basis for our conclusion.
Therefore, we consider Generic Letter 83-28, Item 4.5.3 to be complete for Diablo Canyon.
This fulfills PGICE's requirement in responding to Item 4.5.3 of Generic Letter 83-28, and completes NRC staff activities on TAC NOS.
53976 and 61723.
S incere ly,
~
BVO60701OS SVOiSO r
PDR ADOCK 05000275 P
PNU
Enclosures:
1.
NRC staff SER 2.
EGG-NTA-8341 cc w/encl:
See next page i+DRSP/P05 D
HRood G
ton 05/g/89 5/p/89 OFFICIAL RECORD COPY
/s/
Harry Rood, Senior Project Manager Project Directorate V
Division of Reactor Projects - III, IV, V and Special Projects Office of Nuclear Reactor Regulation
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON. D. C. 20555 May 30, 1989 Docket Nos.
50-275 and 50-323 Mr. J.
D. Shiffer, Vice President Nuclear Power Generation c/o Nuclear Power Generation, Licensing Pacific Gas and Electric Company 77 Beale Street, Room 1451 San Francisco, California 94106
Dear Mr. Shiffer:
SUBJECT:
SAFETY EVALUATION OF GENERIC LETTER 83-28, ITEM 4.5.3, "REACTOR TRIP RELIABILITY-ON-LINE FUNCTIONAL TESTING OF THE REACTOR TRIP SYSTEM,"
FOR DIABLO CANYON UNITS 1
AND 2 (TAC NOS.
53976 AND 61723)
Item 4.5.3 of Generic Letter (GL) 83-28 required confirmation from all licensees that on-line functional testing of the reactor trip system, including independent testing of the diverse trip feature, was being performed.
By letter dated November 30,
- 1984, PGSE submitted a response to Generic Letter 83-28, Item 4.5.3.
Your response endorsed the Westinghouse
- report, WCAP 10271, as being applicable to Diablo Canyon Units 1 and 2.
The NRC staff, with the assistance of our contractor, Idaho National Engineering Laboratory, has reviewed PG&E's response and WCAP 10271.
We conclude that the existing intervals for on-line testing at Diablo Canyon are consistent with achieving high reactor trip system availability.
The enclosed safety evaluation" and contractor's report (EGG-NTA-8341) provide the details and basis for our conclusion.
Therefore, we consider Generic Letter 83-28, Item 4.5.3 to be complete for Diablo Canyon.
This fulfills PGSE's requirement in responding to Item 4.5.3 of Generic Letter 83-28, and completes NRC staff activities on TAC NOS.
53976 and 61723.
S incere ly,
Enclosures:
1.
NRC staff SER 2.
EGG-NTA-8341 cc w/encl:
See next page Harry Rood, Senior Project Manager Project Directorate V
Division of'Reactor Projects - III, IV, V and Special Projects Office of Nuclear Reactor Regulation
~
Mr. J.
D. Shiffer Pacific Gas and Electric Company Diablo Canyon CC:
Richard F. Locke, Esq.
Pacific Gas 5 Electric Company Post Office Box 7442 San Francisco, California 94120 Ms. Sandra A. Silver 660 Granite Creek Road Santa Cruz, California 95065 Mr. Peter H.
Kaufman Deputy Attorney General State of California 110 West A Street, Suite 700 San Diego, California 92101 Managing Editor The Count Tele ram Tribune ox San Luis Obispo, California 93406 Ms.
Nancy Culver 192 Luneta Street San Luis Obispo, California 93401 Regional Administrator, Region V
U.S. Nuclear Regulatory Commission 1450 Maria Lane Suite 210 Walnut Creek, California 94596 NRC Resident Inspector Diablo Canyon Nuclear Power Plant c/o U.S. Nuclear Regulatory Commission P. 0.
Box 369 Avila Beach, California 93424 Bruce Norton, Esq.
c/o Richard F. Locke, Esq.
Pacific Gas and Electric Company Post Office Box 7442 San Francisco, California 94120 Dr.
R.
B. Ferguson S'ierra Club - Santa Lucia Chapter Rocky Canyon Star Route Creston, California 93432 Chairman San Luis Obispo County Board of Supervisors Room 270 County Government Center San Luis Obispo, California 93408 Michael M. Strumwasser, Esq.
Special Assistant Attorney General State of California Department of Justice 3580 Wi lshire Boulevard, Room 800 Los Angeles, California 90010 Mr. Paul Szalinski, Chief Radiological Health Branch State Department of Health Services 714 P Street, Office Building 88 Sacramento, California 95814