05000272/LER-1980-006-03, /03L-0:on 800123,power Was Lost to Meteorological Tower Instruments.Caused by Faulty Backup Power Inverter. Inverter Does Not Have Automatic Transfer Switch as Originally Designed

/03L-0:on 800123,power Was Lost to Meteorological Tower Instruments.Caused by Faulty Backup Power Inverter. Inverter Does Not Have Automatic Transfer Switch as Originally Designed

ML18081B119
Person / Time
Site:	Salem
Issue date:	02/21/1980
From:	Murphy M Public Service Enterprise Group
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML18081B118	List: 05000272/LER-1980-006, Forwards LER 80-006/03L-0 05000272/LER-1980-006-03, /03L-0:on 800123,power Was Lost to Meteorological Tower Instruments.Caused by Faulty Backup Power Inverter. Inverter Does Not Have Automatic Transfer Switch as Originally Designed
References
LER-80-006-03L, LER-80-6-3L, NUDOCS 8002260712
Download: ML18081B119 (1)

LER-1980-006, /03L-0:on 800123,power Was Lost to Meteorological Tower Instruments.Caused by Faulty Backup Power Inverter. Inverter Does Not Have Automatic Transfer Switch as Originally Designed

Event date:
Report date:
2721980006R03 - NRC Website

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NRC FORM366 (7-77)

NUCLEAR REGULATORY COMMISSION LICENSEE EVENT REPORT

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(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6 \\.!.I [UD l~ I JI s I GI s I l l@I o I ol o Io I o Io I o Io I o I ol o 101 4 I ii 1 I ii i 101 I 10 7

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LICENSEE CODE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE JO 57 CAT SB CON'T

=~~~~~ L.!J©I OIS IOI OI OI 217121(2)101112 I 318 I oJ©I 012 I 21118j010 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE BO CIT!]

7 8

EVENT DESCRIPTION AND PROBABLE CONSEQUENCES@

.[III] I Power was lost to the meteorological tower instruments at 1028 hours0.0119 days <br />0.286 hours <br />0.0017 weeks <br />3.91154e-4 months <br /> because the

• inverter used to supply backup power to the instruments does not have an automatic mIJ rr:m I))))

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transfer switch as originally designed.

When the lH power was de-energized due to a I faulty transformer, all power was interrupted.

Entered Action Statement 3.3.3.4 at 1028 hours0.0119 days <br />0.286 hours <br />0.0017 weeks <br />3.91154e-4 months <br /> (78-76, 79-66, 79-72).

7 8 9

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8 SYSTEM CODE 111 Fl@

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LER!RO CVENT YEAR

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REPORT I 8 I 0 I NUMBER 21 22

CAUSE

CAUSE COMP.

CODE SUBCODE

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SUB CODE L!J COMPONENT CODE GI EIN I EIR I Al@

11 12 13 18 19 SEQUENTIAL OCCURRENCE REPORT REPORT NO.

CODE TYPE VALVE SUBCODE LI@

20 I 010161 1......-1 IOl31 LlJ 1=J 23 24 26 27 28 29 30 31 ACTION FUTURE EFFECT SHUTDOWN

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ATTACHMENT NPRD-4 PRIME COMP.

REVISION NO.

L.QJ 32 COMPONENT MANUFACTURER 80 TAKEN ACTION ON PLANT METHOD HOURS ~ SUBMITTED FORM SUB.

SUPPLIER

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33 34 35 36 37 40 41 42 43 I I I I@

CAUSE DESCRIPTION AND CORRECTIVE ACTIONS@

44 47 o::::I[J I An inverter without an automatic transfer switch was provided by the manufacturer when a replacement was installed.

The present inverter has a manual transfer switch but will not automatically provide emergency power on loss of primary power.

Power I11IJ I was restored at 0315 hours0.00365 days <br />0.0875 hours <br />5.208333e-4 weeks <br />1.198575e-4 months <br /> on January 24, 1980, by re-energizing the lH 460V bus.

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FACILITY IJQ\\

STATUS

% POWER OTHER STATUS \\::?.:::)

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1'3 ACTIVITY CONTENT t::;;\\

RELEASED OF RELEASE AMOUNT OF ACTIVITY EE LU @ L!J@I N/A 7

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10 11 7

80 44 METHOD OF

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DISCOVERY DISCOVERY DESCRIPTION

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N_o_n_-_v_i_t_a_l __ B_u_s ________________ __.

45 46 80 LOCATION OF RELEASE@

N/A 45 80 44 PERSONNEL EXPOSURES

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NUMBER

(.;::;\\TYPE ~DESCRIPTION~

LlTIJ I 0 I 0 I Oll!J~L...I _ __,...__..;;;N;,!.,./..;;.;A;....._ __________________ ___,

7 B 9 11 12 13 80 PERSONNEL INJURIES Q

NUMBER DESCRIPTION6 iEJI] lo I olo l@)L----~-~N~/~A~------------------~

ii B 9 11 12 80

• LOSS OF OR DAMAGE TO FACILITY l,j3\\

TYPE

DESCRIPTION

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NRC USE ONLY ISSUEDc,;-. DESCRIPTION~

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_.;;.~;.;,..-------------------------------68 69 80 0 NAME OF PREPARER M. J. Murphy DUt"\\l\\1C. 609-935-0998 0

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