05000219/LER-1981-013-03, /03L-0:on 810319,core Spray Hi Drywell Pressure Switch RV46B Tripped in Excess of 2 Psi Tech Spec.Caused by Sensor Repeatability.Sensor Recalibr.Replacement of Sensors Recommended by PORC

From kanterella
(Redirected from ML20003G189)
Jump to navigation Jump to search
/03L-0:on 810319,core Spray Hi Drywell Pressure Switch RV46B Tripped in Excess of 2 Psi Tech Spec.Caused by Sensor Repeatability.Sensor Recalibr.Replacement of Sensors Recommended by PORC
ML20003G189
Person / Time
Site: Oyster Creek
Issue date: 04/20/1981
From: Riggle E
JERSEY CENTRAL POWER & LIGHT CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20003G187 List:
References
LER-81-013-03L, LER-81-13-3L, NUDOCS 8104280447
Download: ML20003G189 (1)


LER-1981-013, /03L-0:on 810319,core Spray Hi Drywell Pressure Switch RV46B Tripped in Excess of 2 Psi Tech Spec.Caused by Sensor Repeatability.Sensor Recalibr.Replacement of Sensors Recommended by PORC
Event date:
Report date:
2191981013R03 - NRC Website

text

..-_-_ _

use Fow Jos 67 775 LICENSEE EVENT REPORT e

q' CONTROLBLOCK l l

l l

l l

l@

(PLEASE MINT OR TYPE ALL REOut2EO INFORMATIONI 6

lo l i l l N i J l O l C l P l 1 lglIS 0l 0l -l 0 l 0 l 0 l 0 l 0 l - l 0 l 0 lg 4 l 1 l 1 l 1 l l l

lg LICENSE NUMBER 2$

26 LICkNSE TVPE JO SI u f J6 14 i

g 2 L;CErd5EE CC 1E folil "N l L @l 0 l 5 l0 l0 l0 l2 l1 l9 @l 0 l 3 l 1 l 9 l 8 l 11@l 01412 CON'T 68 69 EVENT QATE 14 75 REPORT QATE 80 60 68 OOCK ET NUMSER 8

EVEN T DESCFitPTION AND PROSABLE CONSEQUENCES h gog ] l Routine survaillance testing - Core Spray Hi Drywell Pressure Switch RV46B l

The j

t o # 2 # l trigad in excess of the 2 psi Tech Spec limit see Table 3.1.1 Itsn D2.

go,,; ;as found trippoint was 2.18 psi. Safety significance is considered muumal l

i Io I s i ; since the RV46B switch would have trippad slightly (.18 psi) above Tech I

1 C Ie 1, Spec limit. The Core Spray Sysr.em would have performad its intendad I

g c ;; ; ; function since only one logic channel redundancy was c.umumised.

i so 1 o I8 l l stEYot sEcot I!h[

(($E shay $$E C0eroNENT CCDE l S lF l@ W@ l Z l@ l IlN lS lT lR lU l@ l El@ [_Z_] @

joi9j y

g 3

10 11 42 IJ 18 19 20 SEQUENTIAL CCCURRENCE REPORT 9 EVt$10 *-

EVENTYE4R REPORT NO.

CCCE TYPE Na O.; lea ao I8i1i

[__j 10 il 13 i y

10 l3 i iti

[__j [0_j gg;

,,,,2 8 22 23 24 26 27 28 29 30 38 22 Nf0 'AYTYo"r' c7ItENT

    • "EEo" wouRs @ "sSs$i1T!U PCEuSYs.

'"s'UYPLI EE uANu"P0CYaEa lE jgl34X l@

lZl@

W@

l01010 l0 l lY l@

(Y_j@

y@

lI l2 l0 l4 l([

M 33 36 33 40 48 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h JJ

'Ihe l

f

( i g o j lThe cause of the O ~it rence was attributed to sensor repeatabilitv.

I l

g, ;, g l sensor would have operated within desien accuraev but niichely ahwa I

(rech Spec 1imits. The sensor was racalibrated within the 1imit M 2 ry::i.

I g,i3j l'Ihe PORC has recueendad reolac m.nt of these sensors.

e l

l16 4 I 1 so oTHERsTATus h $isECRN oiscovERv oEsCRiPT:os h "s*T"4E"s s PowtR NA l

[B_j@l Surveillance Test l

l 15 l [EJ@ l 0 l 8 l 9 ]@l 87 44 45 46 7

8 9 to 12 11 ACTivlTV CONTENT LOCATION CP RELEASE AMCuNT OF ACTIVITY l

RELEASED CP RELEASE NA l

l NA Ii Is l [ Zj @ LZ j@l 80 44 45 3

3 g IC_

tt PERSONNE( EXPC3UR ES o.JugER TYPE Q ESCRIPTION l

l i l 7 l l 0 ] 0 l 0 l@l Z !@l r

NA PE RSONNE L INJuNiEs NuvsE R QESCRIPTICN l

[i l a l l 0 l 0 l 0 l@l NA 80 7

s9 11 12 LC1108 CR D AM AGE TO P ACILITY TvPE CE5CRIPTION l

NA lil9l 80 i

. o so EmW I2101 hl Weekly News Felease l

llllllllll Ill[

'5$UE DESCRIPTtOP.

ce se n.-

Elwood I. Riggle (609) 693-69As

, goy g,

s PREPARER I 810 4 2 8 0. N