05000265/LER-1980-016-03, /03L-0:on 800723,discovered That Pressure Switch PS-2-261-30C Would Trip at 841 Psig,Under Limit of 850 Psig. Caused by Instrument Drift.Pressure Switch Recalibr & Tested Satisfactorily

/03L-0:on 800723,discovered That Pressure Switch PS-2-261-30C Would Trip at 841 Psig,Under Limit of 850 Psig. Caused by Instrument Drift.Pressure Switch Recalibr & Tested Satisfactorily

ML19338C942
Person / Time
Site:	Quad Cities
Issue date:	08/11/1980
From:	Kan S COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19338C934	List: 05000265/LER-1980-016, Forwards LER 80-016/03L-0 05000265/LER-1980-016-03, /03L-0:on 800723,discovered That Pressure Switch PS-2-261-30C Would Trip at 841 Psig,Under Limit of 850 Psig. Caused by Instrument Drift.Pressure Switch Recalibr & Tested Satisfactorily
References
LER-80-016-03L-04, LER-80-16-3L-4, NUDOCS 8009080407
Download: ML19338C942 (1)

LER-1980-016, /03L-0:on 800723,discovered That Pressure Switch PS-2-261-30C Would Trip at 841 Psig,Under Limit of 850 Psig. Caused by Instrument Drift.Pressure Switch Recalibr & Tested Satisfactorily

Event date:
Report date:
2651980016R03 - NRC Website

text

.

pRC FOSM 386 U. S. NUCLEAR REGULATORY COMMISSION

' (7 77)

+

LICENSEE EVENT REPORT

, h CONTROL BLOCK: l l l

l l

l lh (PLEASE PRINT OR TYPE ALL REOUIRED INF-ORMATION) 1 6

@ l l l L l Q l A l D l 2 l@l 0 l0 l 0 l-l0 l 0l Ol -l 0 l O l O l@l 4 l I l I l 1 l 1 l@l l

l@

7 8 9 LICENSEE CODE le 15 LICENSE NUMBER 25 26 LICENSE TYPE JG 57 CAT 63 4

CON'T lOl1l 3o,N l L l@l 0 l 5 l0 l 0 10 l 2 16 l5 l@l0 17 12 h 18 lo @l 0 l 8 l 1 l 1 l 8 l 0 l@

7 3

60 St OOCKET NUM9ER 68 69 EVENT DATE 74 75 BEPORT OATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES O'o gl While performing Main Steam Line Low Pressure Isolation Surveillance, QlS-20,.

Al pressure switch PS-2-261-30C was found to trip at 841 psig. The Technical l

1014 l l Speci fication 2.1.H. limit is not to be less than 850 psig.

Redundant pressure l

lOis] l switches did function properly therefore, a Main Steam Line isolation would gl have occurred had the need arisen.

l 10171I I

101811 I

60 7

5 9 SusSTSE SEE3OE

• $E"

• ^"$E SE55E COuPONENT CODE C

CO i

10191 l S l D l@ lE l@ lE l@ l l l N l S l T l R l U l@ l Sl@ ]@

7 8

9 10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LE RrRO EVENT YE AR R EPORT *eO.

CODE TYPE NO.

@yaegr l8 l0 l l-j l 01 11 61 l/l 1013 l l Ll l-l l0 l 28 22 23 24

?$

27 28 23 30 31 32 KN A ON O P NT ME HOURS 22 SB IT

.FOR 8.

SU plt MAN P C RER f

lEl@ W @

W@

y@

l0 l 0l 0l 0l lYl@

lYl@

lXl@

l B l0 l6 l9 l@

JJ 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS l i 101 l The cause is attributed to instrument dri f t.

The switch was recalibrated and I

mI tested satisfactorily.

I li12i I l

li t al l l

18 14 1 I l

7 8 9 80 STA S

% POWER OTHER STATUS IS Y

OISCOVERY DESCRIPTION li 15 l l El@ l 0 l 8 l 7 l@l NA l

W @l Surveillance Test l

~

i A TivtTY CO TEfiT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE NA l

l N.i l

l1 lG l l Zl @ l Z l@l i

7 4 9 80 11 44 45 80 PERSONNEL EXPOSURES

[

feU*.t0 E R TYPE D E SC R * *~'t l l 7 l l 0l 0l '0l@l Zl@l A

l i

,EnSONNE L,~2uLS DESCR,PTiON@

l

,iuM.ER [iT"] l 0] 0l -0l@l NA l

7 3 3 11 12 83 LOSS OF OR CAMAGE TO FACILITY j

TYPE

DESCRIPTION

li 191 IZ lgl NA l

7 4

'A 10 80 NRC UsE ONLY O

RIP M

@ f81 NA l

l l l l l l l ; ; ; ; ;j j 2 o l 8 6ogM o yd{E OF PREPARER even Kan-

-@, M. @

pggyg;