ML18348A200

License Event Report 1977-062-00 Re Iodine Removal System Naoh Tank (T-103)

ML18348A200
Person / Time
Site:	Palisades
Issue date:	01/06/1978
From:	Hoffman D Consumers Power Co
To:	James Keppler NRC/RGN-III
References
LER 1977-062-00
Download: ML18348A200 (2)

Text

consumers

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

• Area Code 517 788-0550 January 6, 1978 Mr James G Keppler Office of Inspection and Enforcement Region III US Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 DOCKET 50-255 - LICENSE DPR PALISADES PLANT - ER-77-062 The reverse side describes a reportable occurrence for the Palisades Plant.

David P Hoffman Assistant Nuclear Licensing Administrator CC: ASchwencer, USNRC

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, e Palisades NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION (7-771 LICENSEE EVENT REPORT CONTROL BLOCK: I I I I I I 1Q (PLEASE PR!NT OR TYPE ALL REQUIRED INFORMATION) 1 6 fil2J 7 8 lMlrJ~s!E~J~ I 1J0tO I 0 IO 1 I 0 L~lse~L~sJR 0 I 0 I 0 I ~J0l~ 11 J_:J -~ l_JG)I__ J_ J © CON'T IT:El  :~~~~~ ~0101 51010101215J5 IG)Jl J2101~7171©10111016171810 7 8 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION ANO PROBABLE CONSEQUENCES@

I While investigating a low level alarm in the iodine removal system NaOH

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((ill J tank (T-103), nitrogen pressure was removed, rendering the tank inoperable I IIEJ I (TS 3 .19.1. b). The tank was restored to service within the time required l

[))))I by Technical Specifications. Loss of NaOH flow could adversely affect I

[)))) I ph control under postulated LOCA conditions. No effect on public 1

[§12] Lhealth or safety. Event similar to ER-77-53. I iI!Il 7 8 9

,oO SYSTEM CAUSE CAUSE COMP. VALVE COOE CODE SUBCODc COMPONENT CODE SUB'"'ODE SUl!,CODE W1J IS I HI@ L!.J@ ~@) IA I CJC I u IM JU I@ ~@ ~@

7 8 9 10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION*

LER/RO LVENT YEAR REPORT NO. CODE TYPE N8.

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21 2: 24 26 27 29 30 32 ACTION FUTURE EFFECT SHUTDOWN (22\ ATTACHMENT NPRD-4 PRIME COMP. COMPONENT TAKEN ACTION ON PLANT METHOD HOURS ~ SUBMITTED FORM :;us. SUPPLIER MANUFACTURER LJ:J@W@ ~@ ~@) 10 Io I 01 I lliJ@ LU§ ~@ I B15 12 I OJ@

33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORREC"rlVE ACTIONS @ ~ .

ITliJ I Pressure loss initially caused by opening tan.k and later by a de! ecti ve 1

[J]J] I gasket which apparently was damaged during removal of the tank cover. ,

I ITIIJ I Gasket was replaced and tank pressure restored .

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