ML19340B282

LER 80-020/01T-0:on 800926,breaker Which Supplies Power to B Standby Liquid Control Sys Pump & B Squib Valve Found Open. Caused by Accidental Tripping of Pump Breaker.Breaker Switches of All Sblc Pumps Locked

ML19340B282
Person / Time
Site:	Peach Bottom
Issue date:	10/10/1980
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19340B277	List: ML19340B276 ML19340B282
References
LER-80-020-01T, LER-80-20-1T, NUDOCS 8010210735
Download: ML19340B282 (1)

Text

. no. , -

j gt .2 uCENSEE EVENT REPORT deport No. 2-80 -20/1T-0 cc,.muL utuco i I

1 1 I 1 l O

l@ (PLE AbE PHINT OH I YPh ALL HLOUtHEJ ifd>OHfdAHONI iictil~lp lA lP lB lS l2 l h! 01 0l 8 J 'J (6CENSEE CODE 14 15 lO l0l0lOl0l-lOlOl@l4l1l1!Illl@!

- LiCENsk Nuuut;n h M ucENst Tyrk Ju I

57 LA T be lh

, CON

• I 1 !, o ? ' i o

N'RU 60l L !@l0'l 61 5 l Ol -I 012 17 17 66!@l 690 l 9EVENT OOCK ET NUM8ER I 216 DATE l 810 l@l 76110 REPORT 74 l 1 l OATE 0 I 8 l 0nol@

hvENT DESCRIPTION AND PROGAOLE CONSEQUENCES h

!Ml T With unit at full power, the "SBLC Loss of Continuity" alarm was I

. (~m l received. Immediate investigation revealed that the breaker which l

, oitI supplies power to the 'B' SBLC pump and 'B' Squib valve was open. I l gM i The breaker was immediately closed restoring the SBLC system to full ,_

[

ngl operability. Continued operation was permitted by Tech Spec 3.h.B.1. I

,ctri j i 4 ,

t

, 72 GI  !

/ d 9 50

$YSTE M CAUSE CAUSE COMP. VALVE CODE CoOE SUSCODE COMPONENT CODE SU8 CODE SUSCODE lM

/ d U l S lH l@ l Al@ l X l@ lC lK lT lB lK lR l@ W@ JuW @

10 11 12 83 tu 19 SEQUENTI A L OCCURRENCE REPORT HEVI$lON

, gg R EVENT YEAR R EPORT NO. CODE i i.* E N O.

@ aseo,Ro ar I8101 1-1 101210I l-l I0111 i Tl 1-1 1 01

_,, 21 22 23 24 2G 27 18 29 30 31 32 Af:1 tofs itittne6 CFFECT SiH J100WN A IT ACHMEN T Neitu d PRIMf COMP 8'f MPf)NL N 1 IAKLN AC Iluf4 UN e'LAN T MkTHUO HOUHh sutsMit'f Lu FOHM buts buPPLil H MAffuf AGIUI4 Lit lXI@lXl@ lZl@ W@ l 0 l0 l0 l0 l lYl@ W@ l Nl@ lCl7l710l@

J3 34 J3  % 3/ 40 48 42 43 44 4s CAUSC GCSCH1PTioN ANo CORRECTIVE ACTIONS IT A I Cause of event is believed to be an accidental tripping of the pump I t.!il l breaker by someone bumping the switch which was at knee level and was I

- 1 i i ,1 ! - adjacent to a step-off pad. The breaker switches of all EBLC pumps l

1i ; ij l have been locked, the contaminated area has been decontaminated, and l l

. i s .. l l ' the step-off pad has been removed. I i 4 3 oc <

~~

Yv'OEs* secWER oTHER STATUS @ 45 ll RY 04SCOVERY DESCFetPTION 1iEl@ l0l9-l9l@l N/A l [_A_j@l Control Room Alarm l A TivtTY . CO TENT nELE AsEn oF RELEASE AMOUNTCF ACTivlTY LOCATION OF RELEASE 3, A Z l @ -li uZI@l N/A o

I l 4

N/A J

PhH%UAfdLL t APQLUHES NUMuER TYPE DESCRIPTION D

-i lOIO'O!@lZl@l NA l

o.su,,e t' ,~2 U,'.c s -

NUuur n OEsc,uPriON@

Wt l o l o l o l@l*7 es 's 1 11 .

N/A l as4 t t r.'. 4,4 i

,,t til..H..

OAMAb

. c.o, NUN Its FAC4L4 5Y e-R i Z l@liO N/A o

I

-, 3 .PUu LICI TY ' '

// NHC IJSt. IsNL Y r ;.,c n

~ l. ! N i@au.cniPnONU

l N/A be/7 ' - -

1. / _ , / I liI!Ii!!!!lI l u w 2ggygogg y ~ ' / ' /J.

M Cooney /. (215) 841-5020 twNvn m crTrsrTrt rmm 4