05000282/LER-1980-033-03, /03L-0:on 801028,steam Flow Transmitter 1FT-464 Observed Reading Low.Caused by Zero Adjustment Shift in Barton Model 384 Differential Pressure Transmitter.Device Recalibr

/03L-0:on 801028,steam Flow Transmitter 1FT-464 Observed Reading Low.Caused by Zero Adjustment Shift in Barton Model 384 Differential Pressure Transmitter.Device Recalibr

ML19345B527
Person / Time
Site:	Prairie Island
Issue date:	11/26/1980
From:	Hunstad A NORTHERN STATES POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19345B524	List: 05000282/LER-1980-033, Forwards LER 80-033/03L-0 05000282/LER-1980-033-03, /03L-0:on 801028,steam Flow Transmitter 1FT-464 Observed Reading Low.Caused by Zero Adjustment Shift in Barton Model 384 Differential Pressure Transmitter.Device Recalibr
References
LER-80-033-03L, LER-80-33-3L, NUDOCS 8012010493
Download: ML19345B527 (1)

LER-1980-033, /03L-0:on 801028,steam Flow Transmitter 1FT-464 Observed Reading Low.Caused by Zero Adjustment Shift in Barton Model 384 Differential Pressure Transmitter.Device Recalibr

Event date:
Report date:
2821980033R03 - NRC Website

text

. _ _ _ _

(7-77)

UCENSEE EVENT REPORT CONTROL BLOCK: l l

l l

l l

(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

Jay lM !N l P lI lN l 1 l@l 0 l 0 l-l 0 l 0 l 0 l 0 l 0l -l0 l 0 l@l4 l1 l1 l1 l 1 l@l l

l@

8 9 LICENSEE CODE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE JO 57 CAT 68 CON'T l0l1I s$n"C Ql 0 l 5 l 0 l 0 l 0 l 2 l g l 9 @l 1 Inl9 I R l R l n l@l1 l 1 l 2 l 6 l 8 l 0 l@

7 8

60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h l0l2l l During str. cup, steam flow transmitter lfT-464 was observed to be reading low.

I At recalibration it was determined that the MSIV closure signal and the reactor trip l 1013 l l ITT71 l Signal from this channel could have occurred as much as21% above Tech Spec limits.

l loisl l Repetitive; recent sita11ar event was RO 80-27.

Tech Spec Tables 3.5-land -2 apply.

l I O is l l NO effect on public health or safety since redundant equipment was operable.

l l o l 71 l l

I 10 t 81 1 OE CO E S SC E COMPONENT CODE SUBCODE SU E

g l C l C l@ W@ lE lh l Il Nl Sl Tl Rl Ulh Wh W h 7

8 9

10 11 12 13 18 le 20 SEQUENTIAL OCCUR R E NCE REPORT REVISION LE R/RO EVENT YEAR REPORT NO.

CODE TYPE NO.

h RE l 8l 0l l-l l 0l 3l 3l l/l l 0l 31 l 1. l l-l W

gU

_ 28 22 23 24 26 27 N

N 30 31 32 KN A ON O PLANT M

HOURS S8 i FOR 8.

SUPPL MANUF CTURER l Elgl34Cl@

l Zl@

l Zl@

lul0l0l0l J@

{@

l Al@

l 1l2 l0 l4 l@

33 36 36 3d 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS li l0 l l Zero adjustment shift in Barton Model 384 differential pressure transmitter.

l li li j l Appropriate bistables were placed in trip.

The device was recalibrated and I

returned to service. These transmitters are scheduled to be replaced during i

gl ii I3l l the next refueling outage.

l ll ! 4 1l l

80 7

8 9 AU

% POWER OTHER STATUS DtS O RY DISCOVERY DESCRIPTION Operator Observation l

NA l

l Alhl li 15 l l C l@ l Ol 3l Ol@l ACTIVITY CO TENT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE NA l

l NA l

l1 l6 l

@ l Zl@l PERSONNEL ExPOSOES NUveER TYPE

DESCRIPTION

11 I 71 l 0 l 0 l 0 l@l Z l@]

NA l

PERSONNE L INJU LES NuveE R

DESCRIPTION

NA l

l i l a l l 0 l 0 l 0 l@l 8 9 11 12 80 LOSS 08 OR OAMAGE TO FACILITY TYPE

DESCRIPTION

NA l

'll 19 l l Z Ihl Pusu$TY 8012 010W3 uRC usE ONLv fi'TTl I N l@ DESCRIPTION ISSUED l

NA l

lllllllllllll 7

8 9 10 68 69 S0 E s ad 612-388-4767

{

NAME OF PREPARER PHONE: