ML17056C047

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Forwards AEOD/T92-07, Inoperability of Standby Liquid Control Sys During Surveillance Testing at Nine Mile Point Unit 2
ML17056C047
Person / Time
Site: Nine Mile Point 
Issue date: 09/30/1992
From: Gundrum L
NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD)
To: Rosenthal J
NRC OFFICE FOR ANALYSIS & EVALUATION OF OPERATIONAL DATA (AEOD)
Shared Package
ML17056C048 List:
References
NUDOCS 9210080100
Download: ML17056C047 (2)


Text

gyp g 0 1992

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,'MEMORA'NDUMFOR:

Jack E. Rosenthal, Chief Reactor Operations Analysis Branch Division of Safety Programs Office for Analysis and Evaluation of Operational Data FROM:

Linda L. Gundrum Engineering Section Reactor Operations Analysis Branch Division of Safety Programs Office for Analysis and Evaluation of Operational Data

SUBJECT:

OPERABILITY OF THE STANDBY LIQUIDCONTROL SYSTEM DURING SURVEILLANCETESTING Enclosed is a Technical Review Report discussing the potential for degradation of both trains of the Standby Liquid Control System (SLCS) during surveillance testing at Nine Mile Point Unit 2.

The automatic actuation of the SLCS is common to only four units in the United States.

The technical review determined that inadvertent actuation during testing could result in either the injection of demineralized water into the reactor coolant system in lieu of sodium pentaborate solution or possibly draining the sodium pentaborate tank contents onto the floor. However, the review concluded that the procedural steps to perform the surveillance test at Nine Mile Point Unit 1 were not generic.

No additional actions are Original sigfIedbll Linda L. Gundrum, Reactor Systems Engineering Section Reactor Operations Analysis Branch Division of Safety Programs Office for Analysis and Evaluation of Operational Data

Enclosures:

Enclosure 1 Figures 1 through 5 Actions Required to Restore Train/System Distribution w/enclosure:

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