05000318/LER-1983-023-03, /03L-0:on 830405,control Power Fuse for Main Vent RMS Panel (1C22F) Blew Due to Short Circuit.Caused by Short When Control Circuit Relay Auxiliary Contacts Jumpered. Electricians Cautioned.Wiring Properly Labeled

/03L-0:on 830405,control Power Fuse for Main Vent RMS Panel (1C22F) Blew Due to Short Circuit.Caused by Short When Control Circuit Relay Auxiliary Contacts Jumpered. Electricians Cautioned.Wiring Properly Labeled

ML20023D187
Person / Time
Site:	Calvert Cliffs
Issue date:	05/05/1983
From:	Basso L, Junge M BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20023D184	List: 05000318/LER-1983-023, Forwards LER 83-023/03L-0 05000318/LER-1983-023-03, /03L-0:on 830405,control Power Fuse for Main Vent RMS Panel (1C22F) Blew Due to Short Circuit.Caused by Short When Control Circuit Relay Auxiliary Contacts Jumpered. Electricians Cautioned.Wiring Properly Labeled
References
LER-83-023-03L, LER-83-23-3L, NUDOCS 8305190352
Download: ML20023D187 (1)

LER-1983-023, /03L-0:on 830405,control Power Fuse for Main Vent RMS Panel (1C22F) Blew Due to Short Circuit.Caused by Short When Control Circuit Relay Auxiliary Contacts Jumpered. Electricians Cautioned.Wiring Properly Labeled

Event date:
Report date:
3181983023R03 - NRC Website

text

-

NRC FnRM 366 U.S. NUCLEAR REGULATORY COMMISSION (7 77)

E-LICENSEE EVENT REPORT o

CONTROL BLOCK: l l

1 I

I l

lh (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6

10 lll l M I D l C l C l N l 2 l@l 0 l 01 -l 010 l 0 l 0 l 0 l-l 010 l@l 4 l 1 l 1 l 1 l 1 l@l l

l@

7 8 9 LICENSEE CODE 14 15 IJCENSE NUMBER 25 26 LICEN56 TYPE 30 57 CAT 58 COWT lol11 S$$ d l0]Sl0l010l311l8l@l014lo1518l M lolsl01slRI3l@

7 8

60 61 DOCKET NUMBER 68 69 EVENT DATE 74 76 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h o 2 l At 1125 while troubleshooting a main vent RMS pump problem. the control l

0 3 'l power fuse for a RMS panel (1C22F) blew due to a short circuit. The l

1014 l I blown fuse rendered the containment gaseous and particulate monitors I

lo Isl I inoperable (T.S. 3.4.6.1). The fuse was replaced and the monitors were I

l o 16 I I returned to service at 1134.

l I

l o l 71 l Similar events-none.

101811 I

C DE CODE 5 3C E COMPONENT CODE SU8 CODE SU E

to_tsj i yI n l@ LL]@ LcJ@ l zl zl zi zi zl zl@ Lz_J@ LzJ @

7 8

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

_ EVENT YEAR REPORT NO.

CODE TYPE N O.

@ s=ER/RO l 81 31 l-l LO 1213 i Ld I 01 31 LtJ I-I LoJ L

a

_ 21 22 23 24 26 27 M

M 3r 31 32 K N AC ONP NT ME HOURS SB IT FOR b 8.

SU PL1 MANUF CTURER ICl@LnJ@

Lz_J@

l zi@

l 01010101 LN_l@

IN l@

l zl@

Iz l9 19 l9 l@

33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l1 IO I l The IC22F control nower fuse had blown due to n short that occurred when l

1 1 l

the control circuit reinv nuvilinrv conences vere jitmnorod - Tho ennencea I

Iil2l l 1eads were not identified. contributine to the error. To orevent recur-i 113 l l rence. electricians will be made aware of this event and its conseauen-I i1 Ie i I ces and the involved wirine will be properiv labeled.

I 80 7

8 9 ST S

% POWER OTH E R STATUS ISCO RY DISCOVERY DESCRIPTION l 1,_[ 5_j (_Ej@ l110l0lhl N/A l

[_AjhlOperatorObservation I

ACTIVITY CO TENT RELEASED OF 9ELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE Lz]@ Lz_1@l N/A l-I N/A I

i e 7

8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE

DESCRIPTION

ITITl l ol n i nl@l zl@l N/A l

8o

,ERSONNa'muLS oESCRIPTiO~@

NuueER 1010101@l N/A l

i a 7

8 9 11 12 80 LOSS OF OR DAMAGE TO FACILITY TYPE

DESCRIPTION

LIl@l N/A l

' 9 7

8 9 70

'o PUBLIClJY 8305190352 830505 NRc USE ONLY 45 iSSuEo PDR ADOCK 05000318 kb d@o.ESCRIPTION l

N/A S

PDR l

lllllllllllllj 7

8 9 10 68 69 80 ;

301-269-4969/4933

{

M. A. Junge/L. F. Basso PHONE:

NAME OF PREPAREn