ML20085E621

LER ER-76-002:on 760116,as-found Setting of Reactor Protective Sys Switch PS1804 & Safety Injection Sys Switches PS1801A,PS1803A & PS1804A Found Out of Calibr.Cause Not Stated.Setpoints Adjusted

ML20085E621
Person / Time
Site:	Palisades
Issue date:	02/04/1976
From:	Bixel D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
LER-ER-76-002, LER-ER-76-2, NUDOCS 8308150441
Download: ML20085E621 (2)

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bSEE EVENT REPORT O Palisades CONTROL 8 LOCK:l l l l l l l (PLEASE PRINT ALL REGUIRED INFORMATION) 1 8 NAME UCENSE NUMBER PE , TT O1 l Ml Il Pl A l L l Il l0 l0 l-l 0l 0l0 l 0 l 0l_l 0l0 l l hl 1l 1l1l 1l l0l3l 7 89 14 15 25 26 3C' 31 32 l TYPE NE DOCKET NUMdER EVENT DATE REPCRT DATE O 1 CON'T l 7 8 57 l

58 l M 59

(,L_l 60 l0 l 5 l 01-l 0 l2 l 5 l Sl 61 68 l 0l1 l1l 6l Tl 6l l 0l 2l0 l hl7 l 6l 69 74 75 80 EVENT DESCRIPTION 95 l Durine testine the RPS switch as found setting of PS180h was out of calibration j 7 89 80 Q l by + 0.2 psi. SIS switch as found settings of PS1801A (right) and PS1803A (left l 7 89 80 EE l and right) were out of calibration by -0.05 nsi. SIS switch PS180hA (left) was l 7 89 80 M l found with intermittent contacts (microswitch). The set noint changes reuresent l 7 89 80 HE l changes of from 1 to h%. All set noints vere ad.1usted and microsvitch renlaced. l

.S'E Co"cE CouPoNENT CCCE ACTU U VOLATON e I Il A l IE l lIl Nl S IT l R lU I W lUl0l7l5l lYl l 7 89 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION DE l There are a total of 8 containment pressure switches manufactured by United l 7 89 80 0 -l v, actric . 9eM es 900. Model J 702-553. Each PS has two switches with individually l 7 89 80 Q l ad.1usted set points. The one microsvitch replaced was P/N BZR814-A2. The l FAtluTY METHOO OF STATUS  % POWER OTHER STATUS DISCOVERY CisCOVERY CESCAFTON 1

LeJ l Ol al 01 I UA I Lt.J l NA I 7 8 9 10 12 13 44 45 46 80 RELE SED OF REL AMOUNT CF ACTMTV LOCATON OF AELEASE E5 lZl [Zj SE l NA l l NA l l 7 8 9 10 11 44 45 80 )

PERSONNEL EXPOSURES NUMBER TYPE CESCRIPTON - -

l DE 1010101 LZJ l NA l-7 89 11 12 13 80 PERSONNEL INJURIES NUMBER DESCRIPTON 1

l 0l 0l 0 [ l NA l

7 89 11 12 So PROBABLE CONSEQUENCES

]E l Since other settings were found satisfactory, this vould not have lead to improper l 7 89 initiating. So LOSS OR OAMAGE TO FAC!UTY TYPE DESCAPTCN

@Wl 7 88 18 UA l

PUBLICITY 8308150441 760204 80 PDR ADOCK 05000255 6

H l NA PDR l

7 89 80 ADDITIONAL FACTORS 3l (Cause Description Contd) application of these switches is well within their l

/ 89 ..- 80 DE l specified capabilities. Additional testing vill be performed to determine l

7 89 further action. 80

O O x General Offices: 212 West Micmgan Avenue Jackson, Michigan 49201. Area Code S17 788 0550 February 5, 1976

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s Mr James G. Keppler i Office of Inspection Enforcement I 7, Region III US Nuclear Regulatory Co= mission g pg2I/Q T99 Roosevelt Road Gut N S Glen Ellyn, IL 60137 \

DOCKET 50-255, LICENSE DPR ' 2 PALISADES PLANT, ER-76-02 FPS / SIS - PS OUT CF CALIBRATION Attached is a reportable occurrence which relates to the Palisades Plant. This occurrence has been classified as a reactor protection system or engineeged 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.

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David A. Bixel -

Assistant Nuclear Licensing Administrator CC: File 1466 ce, e ya