ML18352A351

Licensee Event Report ER-76-04 - MSIV Closure Set Point Was Found Below Tech Spec Limit of Greater than 500 Psia on Two Instruments

ML18352A351
Person / Time
Site:	Palisades
Issue date:	03/10/1976
From:	Bixel D Consumers Power Co
To:	James Keppler NRC/RGN-III
References
LER 1976-004-00
Download: ML18352A351 (2)

Text

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• General Offices.:.¢.!.~,yvest Power company Michigan Avenue, .Jackson, Michiga:n 49201

• Area Code 517 788-0550 March 10, 1976

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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-76-04 MSIV CLOSING PRESSURE INSTRUMENTATION Attached is a reportable occurrence which relates to the Palisades Plant.

This occurrence has been classified as a reactor protection system or engineered safety feature instrument setting which was found to be less conservative than those established by the Technical Specifications but which do not prevent the fulfillment of the functional requirements of the affected system.

David A. Bixel Assistant Nuclear Licensing Administr~tor

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!cENSEE EVENT REPORT e CONTROL BLOCK:j I I I I I [PLEASE PAINT ALL REQUIRED INFOAMATIDNJ 1 6 LICENSEE LICENSE EVENT NAME LICENSE NUMBER TYPE TYPE

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@m CON'T ._I_......_......I B 57 5B wTYPE 59 SOURCE L!:I 60 61 DOCKl;T NUMBER IOl5I 01-101215151 BB 69 EVENT CATE Io 12 I 2 I 111 I6 74 I

75 REPORT CATE lol3l11ol7161 BO EVENT DESCRIPTION lol2I !During testing, the MSIV closure set point was found to be below the Technical I 7 B9 . 00 lol3I Ispecifications limit of "grea.ter than 500 psi a" on two instruments. PIC 0751D was I ,'X 7 B9 00 lol41 lfound set at 495 psia and PIC 0752A was found at 499 psia." I 7 B9 00

@]fil I (ER-76-04) I 7 B9 00 lolsl 7 B 9 PRlME BO SYSTEM CAUSE COMPONENT COMPONENT CODE CODE COMPONENT COOE SUPPLER MANUFACTURER VIOLATIJN 7

@0 IC ID I B 9 10

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11 II 12 I N I s I TI R I u I 17 l!..J 43 II I1 I 3 I 0I 44 47 w.

48 CAUSE DESCRIPTION lolBI IInstrum.ent set point drift. Set point was adjusted. International Instrument I 7 B 9 BO 10101 !Model No 9223-E I 7 B 9 BO i 11 19L---------------~~--------------~~~--------~--------------~--------~B=-!!O

• FACILITY

% POWER OTHER STATUS METHOD OF DISCOVERY DISCOVERY DESCRIPTION w

STATUS 7

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9 I a I a I a12I 13I 10 HI I 44 45 I

46 NA BO.

FORM OF ACTIVITY CONTENT rn -'------

RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE

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NA I NA 7 B 9 10 11 44 45 BO PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION lI@. I0 I 0 I 0 I ~ NA 7 B9 11 12 13 BO PERS"ONNEL INJURIES NUMBER DESCRIPTION EEi lo Io I o11I 7 B9 12 NA BO

. PROBABLE CONSEQUENCES

((fil JSince other set points were satisfactory, proper initiation would have occurre?-*

7 B9 00 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION ITfil lliJ 7 B 9 10 BO PUBLICITY

' 7EfZlB 91-----------------------------""--------....w:i.----------------------------~ BO ADDITIONAL FACTORS 1

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