ML20006E879
| ML20006E879 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 02/14/1990 |
| From: | Boger B Office of Nuclear Reactor Regulation |
| To: | Hunger G PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| References | |
| TAC-75967, NUDOCS 9002260479 | |
| Download: ML20006E879 (4) | |
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- NUCLEAR REGULATORY COMMISSION.
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W ASHING ton,0. C. 20S55
.f T.,, 3 February 14, 1990
' Docket No. 50-277 R
Mr. George A.- Hunger, Jr..
Director-Licensing,'MC 5-2A-5
_ Philadelphia Electric Company
_. Nuclear troup Headquarters Correspondence Control Desk P.O. Box No. 195 Wayne, Pennsylvania 19087-0195
Dear Mr. Hunger:
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SUBJECT:
TEMPORARYWAIVEROFCOMPLIANCE(TACNO.75967) 1 RE:
-PEACH BOTTOM ATOMIC POWER STATION, UNIT NO. 2 During surveillance' testing performed on' February 12, 1990,-the licensee identified a-failed electrical circuit-for the solenoid valve associated with one of the five Automatic Depressurization System (ADS) valves. The licensee-believes there may.be a. failed winding 11n the solenoid valve.which is located 1
inside the drywell? Plant shutdown is necessary to fix the valve.: The licensee has determined that this condition existed during-surveillance testing conducted' on February 7, 1990, and that the ADS valve was inoperable at that1 time.
Facility 1 Technical Specifications-(TS) allow seven days of operation with one
-valve' inoperable, after. which the unit -is required to be shutdown and to be at
'a reactor system pressure at or _below 105 psigLuithin the next 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. -The "seven day allowed outage time will expire at about 2:00 p.m. _ on February 14, j
1990.
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~By11etter_ dated February 14, 1990, the licensee requested Lrelief from TS 3.5.E.2 to allow continued operation with one1 inoperable ADS valve. The o
proposed license amendment involving an interim TS change would allow a'one-time extension of.the.seven day allowed: outage time to 11:59 pm on March 3, 1990, prov_ided the reactor core isolation cooling (RCIC) system remains operable.-
The NRC staff has concluded a preliminary review of the licensee's request _ and agrees that a plant, shutdown to fix:the:inopecable ADS valve is unnecessary
- prior-to' the mid-cycle outage which is scheduled to begin' on March 3,1990.
The licensee. discussed the availability of:the high pressure coolant injection system to respond' to a small break loss-of-coolant-accident (SBLOCA), and i 9
"results'of realistic,;best estimate calculations which indicate that three ADS d
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valves'(whichassumesanadditionalADSvalvefailure)wouldbesufficientto fulfill the ADS safety function.
In addition, the condition requiring continued-0perability of the -RCIC system provides some reasonable assurance that
- 5. applicable: design basis criteria will continue to be met in the event of a SBLOCA. The associated changeito the Peach Bottom, Unit 2 Technical Specifications.is.being processad.
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hii Mr. George. A'. Hunger, Jr.
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!This Temporary Waiver of Compliance shall be effective immediately and shall remain in effect until the proposed license amendment is issued.
Sincerely, e
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Bruce A. Boger, Assistant Director for Region I Reactors Division of Reactor Projects.I/II s
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Office of Nuclear Reactor Regulation
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Mr. George A; Hunger, Jr.
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This' Temporary Waiver of Compliance.shall be effective immediately. and shall
-remain in effectluntil the proposed license amendment _is issued.
Sincerely, 4
Bruce A..
oger, Assistant Director
.for Region.-I-Reactors Division of Reactor Projects I/11 Office of Nuclear Reactor Regula_ tion cc:
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'Mr.- George A. Hunger, Jr.
Peach Bottom A'tomic Power Station, Philadelphia Electric-Company Units 2 and 3 o
Cc:
- Troy B. Conner, Jr., Esq.
Single Point of Contact 1747' Pennsylvania Avenue, N.W.
P. O. Box 11880 -
Washington, D.C.
20006 Harrisburg, Pennsylvania 17108-1880'
- Philadelphia Electric Company Mr. Thomas M. Gerusky, Director ATTN: Mr. D. M.-Smith, Vice President Bureau of Radiation Protection
-Peach Bottom Atomic Power Station Pennsylvania Department of-Route 1, Box 208 Environmental Resources Delta, Pennsylvania 17314 P. O. Box 2063 Harrisburc, Pennsylvania 17120 Philadelphia Electric Company
' ATTN: Regulatory Engineer, Al-25 Mr. Albert R. Steel, Chairman Peach Bottom Atomic Power Station Board of Supervisors Route 1, Box 208 Peach Bottom Township Delta, Pennsylvania 17314 R. D. #1 Delta, Pennsylvania 17314 Resident Inspector-3 8
U.S. Nuclear Regulatory Commission Public Service Commission of Maryland' Peach Bottom Atomic Power Station Engineering Division
'P.O. Box 399 ATTN: Chief Engineer Delta, Pennsylvania 17314 231-E. Baltimore Street Baltimore, MD-21202-3486 Rcgional Administrator, Region I U.S. Nuclear' Regulatory Commission Mr. Tom Magette 475 A11endale' Road:
Power Plant Research Program
-Kir i. of Prussia, Pennsylvania 19406 Department of Natural Resources e
B Mr. Roland Fletcher Tawes State Office Building Department of Environment Annapolis, Maryland 21401 201' West Preston Street Baltimore, Maryland 21201 z
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