ML18353A840

Licensee Event Report ER-76-02 - Rps/Sis - Ps Out of Calibration

ML18353A840
Person / Time
Site:	Palisades
Issue date:	02/05/1976
From:	Bixel D Consumers Power Co
To:	James Keppler NRC/RGN-III
References
LER 1976-002-00
Download: ML18353A840 (2)

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consumers

• ., Power company General Offices: 212 West Michigan Avenue, Jac,kson, Michigan_ 49201

• Area Code 517 788-0550 February 5, 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 PALISADES PLAlfi', ER-76-02 RPS/SIS - PS OUT OF CALIBRATION Attached is a reportable occurrence which relates to the Palisades Plant. This occurrence has been classified as a reactor protection system or e_ngineered 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 Administrator CC: File

14'66

CONTROL LICENSEE .:)

1 ulNSEE EVENT REPORT BLOCK:~!__.,__...l__...l__...l__.li.........,,il 6

LICENSE Palisades (PLEASE PAINT ALL REQUIRED INFORMATION)

EVENT NAME' LICENSE NUMBER TYPE TYPE LM I I I 1'1 A I L I I I I0 j'Ol-1010 I 1 4 1 1 1 1 11 1 1 1 I 0 13 1

@El 10101-101010 7 B9 14 15 25 26 30 31 32 REPORT REPORT

. OOCKl;T NUMBER EVENT DATE REPORT DATE

@I!] CON'T __.__,~-I ITYLPj sruLjE lol1l1l6l1l6I 1012101417161

• ._1 lol5lol-lol215l5I 7 B 57 58 59 60 61 BB BS 74 75 BO EVENT DESCRIPTION lol2l I During testing the RPS switch as* found setting of PS1804 was out of calibration

• I 7 E! 9 . 80 lol3l I by+ 0.2 psi. SIS switch as found settings of PS1801A (right) and PS1803A (left I 7 8 9 80

• 10141 I and right) were out of calibration by -0.05 psi. SIS switch PS1804A (left) was I 7 8 9 80 lol5J J found with intermittent contacts (microswitch). The set point. changes represent I 7 8 9 80 lolsl I changes of from 1 to 4%. All set points were ad.justed and microswitch replaced. I 7 8 9 PRIME (ER-76-02) 80 SYSTEM CAUSE COMPONENT COMPONENT SUPPLER MANUFACTURER VIOLATION w w CODE CODE COMPONENT CODE

• @0 I rl AI IIINlslTIRlul L!.J luloJ115l 7 8 9 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION

~ I There are a total of 8 containment pressure swi~ches manufactured by United I 7 8 9 80 lol91 I F!l ectri c, Series 300, Model J 302-553. Each PS has two switches with individually J 7 8 9 80

~ I adjusted set points. The one microswitch replaced was P/N BZR814-A2. The I

~9 FACILITY METHOD OF 80 OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION w

STATUS  % POWER E1D8 7

w 9

Io I o I o I 10 12 13

. NA 44 I

45 I

46 NA 80 I

FORM OF ACTIVITY CONTENT 7

rn 8 RELEASED W

9 OF RELEASE

~10 11 AMOUNT OF ACTIVITY

~'---=NA~--......,i44I I 45 LOCATION OF RELEASE NA 80 PERSONNEL EXPOSURES NUMBER TYP!: DESCRIPTION 7

IT@lololol 8 9 11 w12 13 NA 80 PERS'ONNEL INJURIES NUMBER DESCRIPTION

~I ol olol NA 7 8 9 11 12 80

. PROBABLE CONSEQUENCES EJfil I Since other settings were found satisfactory, this would not have lead to improper I 7 8 9 initiating. 80 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION EID~ NA 7 B 9 10' 80 PUBLICITY EmB 9 7

NA*

80 ADDITIONAL FACTORS

~ I (Cause Description Contd) application of these switches is well within their *I

~9 80

[Tifil I specified capabilities. Additional testing will be performed to determine I 7 89 80 further action.