ML19294B511
| ML19294B511 | |
| Person / Time | |
|---|---|
| Site: | FitzPatrick  |
| Issue date: | 01/18/1980 |
| From: | Leonard J POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| IEB-80-01, IEB-80-1, NUDOCS 8003040378 | |
| Download: ML19294B511 (2) | |
Text
M 4
t POWER AUTHORITY OF THE STATE OF NEW YORK JAMES A. FIT 2 PATRICK N ucLE A R POWER PLANT JOHN O. LEONARD, JR.
P.O. BOX 41 Resident Manager Lycommg, New York 13093 315-342 3840 January 18, 1980 SERIAL: JAFP 80-053 Boyce H. Grier, Director United States Nuclear Regulatory Commission Region I 631 Park Avenue King of Prussia, PA 19406
SUBJECT:
NRC I&E BULLETIN 80-01 OPERABILITY OF ADS VALVE PNEUMATIC SUPPLY
Dear Mr. Grier:
The Fi tzPatric'- Plant staff has reviewed the subject bulletin and the results of this review are presented below in the same order as indicated in the bulletin:
1)
A review of facility drawings and maintenance records indicates that the check valves
. stalled to isolate the ADS accumulator system from its pneuma lo supply system are soft-seated check valves.
This has been confirmed by information received from the Architect-Engineer.
Physical verification will be conducted during the entry into the primary containment at our scheduled refueling outage.
The FitzPatrick installation has two of these soft-seated check valves in series in each of the accumulator supply lines.
2)
Periodic leak tests have not been performed on the ADS accumulator system check valves since the initial installation. The FitzPatrick Plant plans to leak test the accumulator systems during the scheduled refueling outage commencing in April 1980.
8003046 g.
Boyce H. Grier, Director January 18, 1980 United States Nuclear Regulatory Commission JAFP 80-053
SUBJECT:
NRC I&E BULLETIN 80-01 Page 3)
The FitzPatrick Plant Architect-Engineer has reviewed the seismic capability of the pneumatic supply and accumulator system servicing the ADS valves at the FitzPatrick Plant.
This review indicates that the existing techniques for the design and construction of small bore piping insures that such piping, with its small mass and large flexibility, will withstand seismic events without damage. The Architect-Engirieer considers that computer aided analysis is neither necessary or required.
Notwithstanding this position, because of the specific questions raised by the subject bulletin, the Architect-Engineer has analyzed two of the seven systems of concern with the best available information. The results of this analysis indicate that seismic stresses are below one-tenth of the maximum allowed stress.
Based on this analysis, it is the Architect-Engineer's judgment that the ADS pneumatic supply system from the accumulator isolation check valves to the ADS valve operators and from isolation valve on the pneumatic supply system outside containment up to the ADS accumulator check valve, is seismically adequate. A field verification of the associated as-built drawings will be completed during the scheduled refueling outage and any discrepancies noted will be brought to the attention of the Architect-Engineer.
4)
Based on the information available, the FitzPatrick Plant staff considers that the ADS system would operate as specified in the FSAR.
With particular refere'ce to a seismic event, present information indicates there would not be an impact on its operability.
Ver truly yours',' (
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QA% '
JDL:VC:brp J0MN D. LEONARD, JR.;
DISTRIBUTION:
RESIDENT MANAGER G. T. Berry, PASNY-NY0 i
G. A. Wilverding, PASNY-NY0
/
P. W. Lyon, PASNY-NY0 J. F. Davis, PASNY-NY0 M. C. Cosgrove, PASNY-JAF R. J. Pasternak, PASNY-JAF Document Control Center United States Nuclear Regulatory Commission Office of Inspection & Enforcement Division of Reactor Operations Inspection Washington, D.C.
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