ML20085E485

LER ER-76-025:on 760813,during Semiannual Operational Check of Hydrogen Recombiners,Unit M69B Loaded to 43 Kw,Resulting in Heater Temp Below Tech Spec Limits.Caused by Grounded Heater Phase

ML20085E485
Person / Time
Site:	Palisades
Issue date:	09/09/1976
From:	Bixel D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
LER-ER-76-025, LER-ER-76-25, NUDOCS 8308120254
Download: ML20085E485 (2)

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UCENSEE EVENT REPORT CONTROL BLOCK:{l l l l l

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[M. EASE PRINT ALL RSdBUutED W8PORGAATION)

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7 89 14 15 25 28 30 31 32 UA1C 00Cx(T NU 9ER EVENT CATE REPORT DATE TYPE O CONT l l l

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88 89 74 75 80 EVENT DESCRIPTION gg l While verforming the semiannual operational check of the two hydrogen recombiners, l 7 89 80

@ l Unit "69B could only be loaded to h3 kW and the resulting heater temperature was l

80 7 a9

$ l 170 F below the tennerature reouired by Technical Snecification h.2.2.12.b.h l

7 d9 80 SE l (1200 F).

The heater met the requirements of the six month test but vould not meet l 7 89 go BE I the recuirements of the 18-month test. The unit is considered inoperable. (ER-76-29) 80 7 89 C

DE COMPONENT CODE P!

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7 89 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION DE l '"he ureliminary inspection indicates that one phase of the heater is grounded. A l

7 89 80

@ l detailed investication vill be made at the next plant cold shutdown. In addition l

7 89 80 3 l tc the 1005 redundant recombiner unit the containment purge system is (see Line 18) l 7 89 S

% POWER OTHER STATUS OE OSCOVERY DESCAPTON

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1 7 8 9

10 12 13 44 45 46 80 Es $UISE l l

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aYtE54 [o AuouNT os ACTmTv LoCAfos os nELEASE l,,ZJ NA E0 W

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10 11 44 45 80 IEASONNEL EXPOSURES NUMBE A TYPE DESCApicN

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7 89 11 12 13 80 PERSONNEL INJURIES NUMBER DESCASTON 3E I ol O l 01 1

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7 89 11 12 80 PROBABLE CONSEQUENCES gg l None - Redundant systems are available.

l 7 89 80 LOSS OR DAMAGE TO FACIUTY TYPE DESCAFTON g] ] l NA l

7 89 10 80 PUBLOTY gg l None l

7 89 80 ADDITIONAL FACTORS g l (Contd From Line 10) available. Either system is capable of maintaining H,3 belov l 7 89 80 gg l the combustible limit during post LOCA conditions.

l 7 89 8308120254 760909 PDR ADOCK 05000255 S

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i Consumers f

5 Power f Company General Offices: 212 West Michigan Avenue. Jackson, Michigan 49201. Area Code 517788-0560 September 10, 1976 s

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gl t 3' Mr James G. Keppler

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Office of Inspection & Enforcement N

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Region III US Nuclear Regulatory Ccemission 799 Roosevelt Road N /p';':7' '(3 Glen Ellyn, IL 60137 DOCKET 50-255, LICENSE DPR-20 PALISADES PLANT, ER-76-25 HYDROGEN RECOMBINER Attached is a reportable event related to the Palisades Plant. This event has been classified as a condition leading to operation in a degraded mode.

David A. Bixel (Signed)

David A. Bixel Assistant Nuclear Licensing Administrator 9419 copy SENT REGIOR

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