ML18352A332

Licensee Report of Non-Routine Event of 6/14/1976: Accident Analysis for Simultaneous Loss of 4 Reactor Coolant Pumps

ML18352A332
Person / Time
Site:	Palisades
Issue date:	06/18/1976
From:	Consumers Power Co
To:	NRC/RGN-III
References
Download: ML18352A332 (2)

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Rndiolo~ical Tenm.~-----

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Press Rclcaf;e: . . by J~icensee {Date:)________~--. .:: '*'.

Issued by l\itC (Date)._ _ _ _ _ _ _ _ _;...-_ _ __

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ll'*e LiccnGee repC!rts that during a re\lie\'1* o{ potential problems if flooding, occurred *in t:he turbine buildi~ lt w&e rioted that both.

~160v buses could be flooded at the same time a-s they are *loca-ted Bide. by side in the* turbine building. These buses are not ECCS related* but: do supply .power to the. PTi\ll&r)~ Cool(lllt Pumps I 'lne FSAR i;tateB that. che loss of. four Primar~* Coolant Pm11ps j o not

• considered credible and t:berefore* vas not a:naH:zed. in the safety*

an&l)'tth. Additional anal) BiB i8' being conducted. ln tha interi&n-1 the Licensee has inDt:itut:ed .administrative procedures *to require pla11t trip if !l<>odiug occurea. Flooding alarms at lo\fer ele\lation in* turbine building are being tested to insu-re tlleir Oj>erabil:Lt)'*

Additi*onal temporary* flooding protection is being coneidered*. The Licensee will provi.de a 14 day report.

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• UNITED STATES NUCLEAR REGULATORY COMMISSION REGION 111 799 ROOSEVELT ROAi;>

GLEN ELLYN, ILLINOIS 60137 Incident Notification From:

Docket No. (or icense No.))

Transmittal Date: Palisades Power Plant

• Di stri bu ti on:*

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