05000305/LER-1981-016-03, /03L-0:on 810515,tests Indicated That Two Foxboro RCS Flow Transmitters in Loop a Were Out of Calibr.Caused by Setpoint Drift.Transmitters Recalibr

/03L-0:on 810515,tests Indicated That Two Foxboro RCS Flow Transmitters in Loop a Were Out of Calibr.Caused by Setpoint Drift.Transmitters Recalibr

ML20009B533
Person / Time
Site:	Kewaunee
Issue date:	06/12/1981
From:	Molzahn D WISCONSIN PUBLIC SERVICE CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20009B532	List: 05000305/LER-1981-016-03, /03L-0:on 810515,tests Indicated That Two Foxboro RCS Flow Transmitters in Loop a Were Out of Calibr.Caused by Setpoint Drift.Transmitters Recalibr 05000305/LER-1981-017-03, /03L-0:on 810515,discovered That High Pressure Reactor Trip Setpoints for Pressure Transmitters Were Higher than Tech Spec.Caused by Setpoint Drift.Instruments Recalibr 05000305/LER-1981-018-03, /03L-0:on 810516,testing Indicated That Low Pressure Safety Injection & Reactor Trip Were Below Tech Spec Limits for Pressure Transmitters.Caused by Instrument Drift.Sensing Lines Flushed.Amplifier Replaced ML20009B531
References
LER-81-016-03L, LER-81-16-3L, NUDOCS 8107160235
Download: ML20009B533 (1)

LER-1981-016, /03L-0:on 810515,tests Indicated That Two Foxboro RCS Flow Transmitters in Loop a Were Out of Calibr.Caused by Setpoint Drift.Transmitters Recalibr

Event date:
Report date:
3051981016R03 - NRC Website

text

~

ORM 366 U.S. NUCLEAR REGULATORY COMMISSION (7 77)

LICENSEE EVENT REPORT o

(;ONTROL BLOC %: l l

l l

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

I O l 1 l IW II lK lN l P l 1l@l 0 l 0 l -l 0 l 0 l 0 l 0 l 0 ! - l 0 l 0 l@l 4 l ll ll 1l 1l@l l

l@

7 8 9 LICENSEE CODE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE JO SFCAT58 COWT lOI11 3$n% l L l@[0_l 5 l 0 10 ] 0] 3 l 0 15 l@l 0 l5 l1 l5 l 8 l1 ]@l0 l6 l1 l 2 l 8 l1 l@

8 60 61 DOCKET NUMBER 68 69 EVENT DATE 14 7b REPORT DATE 80 EVENT DESCRIPTION AND PROBA.tE CONSEQUENCES h lGI2l lDuring refueling operation, survai11 =,,, a testing indicated that two RCS flow l

[O I3 l l transmitters in loop A were out of enlibration misch rhnt their low flow reactor trip l 10141 l settings (2/3 logic) were a mnv4==== 0.37% be10weha Ts requif red neepnine. Thin i

IOI5I i placed the facility under reporting requirament T.S.6.9.2.b(1) and T.S.2.3.a.4.A.

l l O 16 I l Reactor trip would have occurred voii 2%ve che limiting e-vin nnine mannmed in the l

I O I 7 I I FSAR. The reactor was shutdown at the rima of dincoverv.

There van up2ffect qLp d i O I a i l operation or public safety.

I 7

8 9 80 SYSTEM

CAUSE

CAUSE COMP.

VALVE CODE CODE SUSCODE COMPONENT CODE SUBCODE SUSCODE [O19]

lIlAlh [_Kjh [,ljh lIlNlSlTlRlUlh d h d h 7

8 9

10 11 12 13 18 19 20 SEQUENTI AL OCCURRENCE REPORT REVISION LE R RO EVENT YE AR REPORT NO.

CODE TYPE NO.

b Rf l8lil

(-_]

IOl1l6j M

l Ol3 l l,_,L._l l-l [0_j RT nu

_ 21 22 23 24 26 27 N

29 30 31 32 AKEN A ON ON PL NT MET HOURS S BNITT D FOR S B.

SUPPLI MAN FACTURER l E l@W@

l.ij@

lZ!h l0l d 010 l [N_j @

[N_j@

lNl@

l F l 1 l 8 l 0 l@

33 34 35 36 31 40 41 42 43 44 41 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h I i l O I I Instrument drif t of the Foxboro flow trappmitters caused them to be out of I

I1 11I I calibration. The transmitters were nr.alibrated with no indication of further I

Iil7l l problems. No further action required.

I 12 131 I l

11 141 l l

7 8 9 80 ST S

% POWER OTHER STATUS ISCO R DISCOVERY DESCRIPTION L1_l 5_] lJLjh l 0 l 0 l 0 lhl NA l

W@l burveillance Testing l

ACTI% *Y CO TENT RELJASE3 OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE [Z_) h ( Zj@l NA l

l NA l

1 6 7

8 9 10 11 44 45 80 PERSONNEL EXPOSURES l 0] 0l OlhiZ lhl DESCRIPTION l

NUMBER Ti/E NA i 7 PEnSONNe't iNauWiES NUMBER

DESCRIPTION

lOl010lhlNA l

1 8 7

8 9 11 12 80 LOSS OF OR DAMAGE TO FAClllT'r h.e TYPE DESCDIPTION [Z_jhlNA l

1 9 Pu8u$TY 8107160235 810612 8

ISSUE @ DESCRIPTION O NRC USE ONLY PDR ADOCK 05000305

] NA S

PDR l

lllllllllllllj 2 O 7

8 9 10 GE 69 80 5 D. J. Molzahn LdUN 15 198l (414) 388-2560

{

t NAME OF PREPARER psoss;