05000255/LER-1981-002, Forwards Updated LER 81-002/03L-1

Forwards Updated LER 81-002/03L-1

ML18046A458
Person / Time
Site:	Palisades
Issue date:	02/26/1981
From:	Frost S CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML18046A459	List: 05000255/LER-1981-002, Forwards Updated LER 81-002/03L-1 05000255/LER-1981-002-03, Determined That 125 Volt DC Distribution Panel D21A Mounting Did Not Meet Seismic Restraint Criteria.Caused by Engineering Judgment Error. Frame Holding Panel Modified by Adding Braces
References
NUDOCS 8103030788
Download: ML18046A458 (2)

LER-1981-002, Forwards Updated LER 81-002/03L-1

Event date:
Report date:
2551981002R00 - NRC Website

text

~**. consumers Power company

• General Offices: 212 West Michigan Avenue, Jackson, Michigan 49201 * (517) 788-0550 February 26, 1981 Mr James G Keppler Office of Inspection and Enforcement Region III U S Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60127.

DOCKET 50-255 - DPR PAJ,ISADES PLAN:T -

LICENSEE EVENT REPORT 81_.002 UPDATE -

INADEQUATE MOUNTING OF DC DISTRIBUTION PANEL Licensee Event Report (LER)81-002 was submitted to the NRC Region III office on January 26, 1981.

An update to this LER is on the reverse side of this letter.

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~teven R Frost Palisades Licensing Engineer CC Director, Office of Nuclear Reactor Regulation Director, Office of Inspection and Enforcement NRC resident Inspector-Palisades iMAR 2: 1981 8t0-.S0307 88

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f O UPDATED REPORT-2/J.6/81 INITIAL REPORT-l/26/8i" PALISADES PLANT NRC FORM366 17-77)

U.S. NUCLEAR REGULATORY COMMISSION LICENSEE EVENT REPORT CONTROL BLOCK: I I G)

(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6

[£JIJ I M I I I P I A I LI 1 l@I o I o I - I o I o I o I o I o I - I o I o 101 4 11 I 11 11 1 I 01 I I 0 7

8 9

LICENSEE CODE 14

~5 LICENSE NUMBER 25 26

.LICENSE TYPE JO 57 CAT 58 CON'T [il:IJ

~~~~~~. l.Jd©I o I 51 o I o I o I 2 I 5 I 5101 o 11 I o I 81 8 I i 10 I o I 2 I 2 I 61 8 I i 10 7

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.. 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE BO EVENT DESCRIPTION AND PROBABLE CONSEQUENCES (,"Q)

[)))) J *puring.post* installation revie1i" of fire protection modifications, it was

[]J:::~:~C{: det.ermined that 12~5 volt DC distribution panel D21A was not adequately c:Q:I~~l r momitea in terms *af meeting sej smj c restraint. criteria The redimdant [Q:TIJ) panel.-D-llA was properly mounted.

The loads supplied by the panel (1-2 Diesel Gen. and 2400V Bus lD) were declared inoperable; repairs were

___J initiated and completed within time required by LCO of TS 3. 7.2c.

No

[)))) I threat to public health or safety existed.

7 8 9 SYSTEM

CAUSE

CAUSE COMP.

CODE CODE SUBCOOE COMPONENT CODE SUBCOOE ITIIl I Elc I@ lli.J@ w@ I slul Pl olRI Tl@ LxJ@

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9 10 11 12 13 18 19 SEQUENTIAL OCCURRENCE REPORT REPORT NO.

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ON PLANT METHOD HOURS ~ SUBMITTED FORM ~UB.

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ll!.J@) UJ 33 34 35 36 37 40 41 42 43 IN I 3 I 5 I 5 I@)

CAUSE DESCRIPTION AND CORRECTIVE ACTIONS @

44 47 IJJI] I The seismically qualified.panel was mounted on a field fabricated frame rr:m o::m o::m which was insufficiently braced.

The apparent cause was incorrect engineering judgment made during a fjeJa cban~e.

To satisfy seismic restraint criteria, frame was modified by a"d.di tion of braces.

7 B

9 FACILITY STATUS [i]}] L!J@

% POWER OTHER STATUS @

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I _N_A ___

METHOD OF

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DISCOVERY DISCOVERY DESCRIPTION e

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9 10 12 13 44

~

~

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ACTIVITY CONTENT

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RELEASED OF RELEASE AMOUNT OF ACTIVITY e

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W@) lz.J@)I NA 7

8 9

10 11 "tocATION OF RELEASE@

44 45 80 PERSONNEL EXPOSURES r:;;::..

NUMBER c;::;., TYPE

DESCRIPTION

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7 8

9 11 12 13 80 PERSONNEL INJURIES

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NUMBER DESCRIPTION6

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lol olo l@)...__ ___

~N~A ____________________ ___.

8 9

11 12 80 LOSS O* OR DAMAGE TO FACILITY t;j3' TYPE

DESCRIPTION

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9 10 80 l2TIJ r:rif@~;;CRIPTION@:..**

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9 10 68 69 80