ML20212R356

Corrected Memo Forwarding AEOD Rept, Leaking Pulsation Dampener Leads to Loss of Charging Sys. Suggests NRR Be Informed That San Onofre 2 & 3 Only safety-related Sys That Could Be Affected by Similar Failure

ML20212R356
Person / Time
Site:	Palo Verde, San Onofre, 05000000
Issue date:	03/10/1987
From:	Cintula T NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD)
To:	Rubin S NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD)
Shared Package
ML13322A223	List: ML13322A222 ML13322A224 ML13322A225 ML20212R356
References
AEOD-T702, NUDOCS 8704270128
Download: ML20212R356 (1)

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MEMORAflDUM FOR: Stuart D. Rubin, Chief DISTRIBUTION Reactor Operations Analysis Branch PDR Office for Analysis and Evaluation ROAB CF of Operational Data ROAB SF TCintula THRU:

Patrick W. Baranowsky, Chief 3 Rubin Reactor Systems Section 1 MWilliams Reactor Operations Analysis Branch SannLing Office for Analysis and Evaluation iSniezek, DEDG0GR of Operational Data P0aranowsky KBlack FROM:

Theodore C. Cintula, Reactor Systems Engineer AE00 SF Reactor Systems Section 1 Reactor Operations Analysis Branch

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Office for Analysis and Evaluation of Operational Data

SUBJECT:

LEAKING PULSATION DAMPENER LEADS TO LOSS OF CHARGING SYSTEM The report describes three events of a loss of charging pump suction at Palo Verde due to the failure of the gas-filled, pulsation dampener or the suction stabilizer on a positive displacement charging pump. The charging system at Palo Verde is not safety-related and subsequent investigation indicated that the only safety-related system that could be affected by a similar failure of the pulsation dampener is at San Onofre 2 and 3.

Accordingly, it is suggested that NPR be informed of this finding by a separate memorandum.

Failures of the suction stabilizer, as occurred in one of the events at Palo Verde, have previously been identified and documented by other studies and no new recommendations or suggestions are appropriate at this time.

Theodore C. Cintula, Peactor Systems Engineer Peactor Systems Section 1 Reactor Operations Analysis Branch Office for Analysis and Evaluation of Operational Data

Enclosure:

As Stated cc w/ enclosure:

Heltemes, AE00 L. Gifford F. Hebdon, AEOD L. Licitra J. Crooks, PTB S. Massaro, PTB M. Beaumont, EE H. Rood, NRR W

C. Brinkman, R. Huey, RV P. Borsum, B&W R. Zimmerman, RV T. Guynn, OCM SCMO[B OFC : ROAB

BC:ROAB

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NAME : TCintula:as: PB bd SRubin

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DATE : J/3/87

T/$/87 0FFICIAL RECORD COPY 8704270128 870312 t

PDR ADOCK 05000361 S

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