ML18352A345

Licensee Event Report ER-76-009, Containment Spray, a Condition Leading to Operation in a Degraded Mode

ML18352A345
Person / Time
Site:	Palisades
Issue date:	05/14/1976
From:	Bixel D Consumers Power Co
To:	James Keppler NRC/RGN-III
References
LER 1976-009-00
Download: ML18352A345 (2)

Text

• *

• consumers Power company General Offices: 212 West Michigan Avenue, Jackson, Michigan 49201

• Area Code 517 788-0550 May 14, 1976 Mr James G. Keppler Office of Inspection Enforcement Region III US Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 DOCKET 50-255, LICENSE DPR-20 -PALISADES PLANT -ER-76-09 -CONTAINMENT SPRAY Attached is a reportable occurrence which relates to the Palisades Plant. This occurrence has been classified as a condition leading to operation in a degraded mode permitted by a limiting condition for operation or plant shutdown required by a limiting condition for operation.

/)

David A. Bixel/ // Assistant Nuclear Licensing Administrator \,f -1* I I

• 6 .,,

LICENSEE EVENT REPORT-¥ ,.. CONTROL BLOCK:!_----'

__...I __...I _l_I [PLEASE PRINT ALL IRIEQUIRED INFORMATCON]

LICENSEE NAME .IMlrlPIAILlrl 7 8 9 14 1 6 LICENSE NUMBER I o I o-1-1 o I o I o I o I o 1-1 o I o I 15 25 OOCKl;T NUMBER

• LICENSE TYPE 14111111111 26 30 EVENT DATE EVENT TYPE Io I 3 I 31 32 REPORT OATE @EJcoN'T 7 8 57 58 REPORT TYPE. L!J REPORT SOURCE L1J IOI 51ol-101215151 lol411l2l1l6I lolsl11411l6l 59 60 61 68 69 74 75 80 EVENT DESCRIPTION lo'2f !During testing of the containment spray system the left channel relay (No 5P7, 7 9 ' IPl3l !Contacts 4, 6 and 7) showed intermittent operation.

The redundant spray system 7 8 9 . lol41 ltested satisfactorily.

The relay contacts were cleaned and the retest was satis-7 8 9 10151 !factory. 7 8 9 Dust covers will be installed to enclose these relays. (ER-76-09)

I BO I 80 I 80 I 80 lol6I.__ ________________________________________________________________________

__. 7 8 9 PRME 80 SYSTEM CAUSE CODE COOE COMPONENT CODE @Ells!BI L!J lrlNJsJTIRJuJ 7 8 9 10 11 12 17 CAUSE DESCRIPTION COMPONENT SUPPLIER w 43 COMPONENT MANUFACTURER I c I 3 I 6 I o I 44 . 47 VlOLATKJN L!!J 48 lolal jThe most likely cause of this problem is considered to. be dirty contacts. 7 8 9 lolsl !relay was a Ty;pe PM, Cat #5Ul0, Bulletin 7305. 7 8 9 The I 80 I BO

____________

...,.....

__________________________________________________________________

8__,0 FACILITY METHOD OF STATUS %. POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION EEJ LlU Io I ol o I I NA I L2J I NA 7 8 9 10 12 13 44 45 46 BO FORM OF ACTIVITY CONTENT RELEASED OF RELEASE W W I.._ _____ __. AMOUNT OF ACTIVITY I 1* LOCATION OF RELEASE NA NA rn 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION ol olol w NA 7 8 9 11 12 13 BO PERS.ONNEL INJURIES NUMBER DESCRIPTION ol ol ol NA 7 8 9 11 12 80 . PROBABLE CONSEQUENCES I None -The Technical Specifications permit limited operation with system out of 7 8 9 service. BO LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION Oil W NA 7 8 9 10 80 PUBLICITY (I0 NA 7 8 9 BO -AOOITIONAL FACTO: B 9 80