05000318/LER-1980-013-03, /03L-0:on 800303,channel Zf Pressure Input Signal for Steam Generator Isolation 22 Was Bypassed.Caused by Signal Isolater 2-E/E-1023C Being Out of Calibr Due to Nonlinear Response

/03L-0:on 800303,channel Zf Pressure Input Signal for Steam Generator Isolation 22 Was Bypassed.Caused by Signal Isolater 2-E/E-1023C Being Out of Calibr Due to Nonlinear Response

ML19309C350
Person / Time
Site:	Calvert Cliffs
Issue date:	04/02/1980
From:	Heibel R, Rizzo P BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19309C344	List: 05000318/LER-1980-013, Forwards LER 80-013/03L-0 05000318/LER-1980-013-03, /03L-0:on 800303,channel Zf Pressure Input Signal for Steam Generator Isolation 22 Was Bypassed.Caused by Signal Isolater 2-E/E-1023C Being Out of Calibr Due to Nonlinear Response
References
LER-80-013-03L-01, LER-80-13-3L-1, NUDOCS 8004080488
Download: ML19309C350 (2)

LER-1980-013, /03L-0:on 800303,channel Zf Pressure Input Signal for Steam Generator Isolation 22 Was Bypassed.Caused by Signal Isolater 2-E/E-1023C Being Out of Calibr Due to Nonlinear Response

Event date:
Report date:
3181980013R03 - NRC Website

text

-.

LICENSEE EVENT REPORT

' O CCNTROL BLOCK: l l

l l

l l lh (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATioN) 1 6

lo lil i MI DI cl cl nl 21@l o l o l l o f o f o l 01 o l I o l o l@l 41111 Il l l l@l I

l@

?

8 9 LICENSEE CODE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE JO 57 CAT 58 l

CON'T

% EILl@l015101010131il8)@l0131013l81Ol@l01410121810l@

lo l il'

?

8 60 61 DOCKET NUMBER 68 69 EVENT OATE 74 75 REPORT D ATE 80 EVENT oESCRIPTION AND PROB ABLE CONSEQUENCES Oio i o 12 l l The channel ZF pressure input signal for #22 Steam Generator Isolation was l

i o I a i i bypassed at 1000 on March 3,1980.

The sensor channel indicator had displayed l

7 Io i4 I l a voltaoe deviation from the other three sensor channels. The sensor channel i

Io I s I I was reoaired and returned to service at 1350, March 3,1980. The remaining I

I o le 1 I three channels remained ooerable throuahout this event as reauired by T.S. 3.3.2.1.

I Io I 7 I I LER 78-16 (U-2) describes a similar event.

I Io la f l 1

80 1

- 7 8 9 DE CO E SLBC E COMPONENT CODE SUSCOdE S

E 10191 11 IB l@ [_E_j@ l E l@ li IN I S iT l R 10 l@ l XI@ l Zl @

7 8

9 10 11 12 13 18 19 20 i'

SEOUENTIAL OCCURRENCE REPORT REVISION EVENT YEAR REPORT NO.

CODE TYPE N O.

i

@ "LER;RO 1810l l---J 101113l l/l 10131 LL_j

[-_-j l

l g

_ 21 22 23 24 26 27 28 a

Jo 31 32

)

T K N ACT C 0 PL NT ME HOURS 22 SB i PO 8.

$UPPLIE MANUPACTURER lAl@lFl@

lZl@

lZl@

1010l010l l Y l@

l Y l@

lAl@

l T l 21817 l@

33 34 35 36 37 40 41 42 43 A4 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h i l1 I O I I Sional isolator 2-E/E-1023C (Transmation Isolatina Transmitter Model #230fT)

I i1 Ii1 I was found to be out of calibration due to non-linear response. The instrument i

li i 21 1 cnirld not he recalibrated and was returned tn the maninfacturer fnr renair-I 11 131 l l

i mi I

7 8 9 80 ST S

% PCWER OTHER STATUS 15 RY DISCOVERY CESCRIPTION

, Ii i s I [E_j@ l 110 l 0 l@l NA l

l A l@l Operator Observation l

I '

A T1VITY CO TENT AuCUNT OP ACTIVITY @ l LOCATION OP RELEASE @

l

+

Rett AsEo OP RELE ASE jliisl W @ W @l NA l

NA l

l 7

8 9 to 11 44 45 80 PERSONNEL EXPOSURES NUvaER TYPE CESCRIPTION l l1 l 71 10 l 010 l@W@l NA

'l l'

PERSOwELiNauLS DESCRIPTION @

Nuv8ER

> litalininInl@l NA l

7 8 9 11 12 80 LOSS OP OR DAMAGE TO PACILITY TYPE DE SCRIP TION 11191 LLl@l NA l

7 8 9 10 4

30 PU8LICITY b004080 ISSUCD DE SCRIP TtON NRC UsE ONLY 121 o 1 UJLJ@l NA I

I!l1lI1IIIII15 7

8. 9 10 68 69 80 %

R. P. Heibel/P. G. Rizzo (101 Wo a7alia7ps

{

peong NAVE OF PREPARER

LER NO.

80-13/3L DOCKET NO.

50-318 EVENT DATE 03/03/80 REPORT DATE 04/02/80 ATTACHMENT CAUSE DESCRIPTION AND CORRECTIVE ACTIONS:

Based on recomendations by the manufacturer, Facility Change Request 80-25 has been originated to allow replacement of several industrial grade capacitors with MILSPEC devices _to improve the reliability of this instrument. Contingent on approvals, it is estimated that the Field Change will be completed by January 1,1981.

S s

i l

I i

~