05000306/LER-1980-027-03, /03L-0:on 800919,steam Flow Transmitter 2FT-474 Found Reading Low.Caused by Zero Adjustment Shift in Barton Model 384 Differential Pressure Transmitter. Transmitter Recalibr.Transmitters Scheduled to Be Replaced

/03L-0:on 800919,steam Flow Transmitter 2FT-474 Found Reading Low.Caused by Zero Adjustment Shift in Barton Model 384 Differential Pressure Transmitter. Transmitter Recalibr.Transmitters Scheduled to Be Replaced

ML19340B255
Person / Time
Site:	Prairie Island
Issue date:	10/17/1980
From:	Hunstad A NORTHERN STATES POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19340B242	List: 05000306/LER-1980-027, Forwards LER 80-027/03L-0 05000306/LER-1980-027-03, /03L-0:on 800919,steam Flow Transmitter 2FT-474 Found Reading Low.Caused by Zero Adjustment Shift in Barton Model 384 Differential Pressure Transmitter. Transmitter Recalibr.Transmitters Scheduled to Be Replaced
References
LER-80-027-03L-01, LER-80-27-3L-1, NUDOCS 8010210705
Download: ML19340B255 (1)

LER-1980-027, /03L-0:on 800919,steam Flow Transmitter 2FT-474 Found Reading Low.Caused by Zero Adjustment Shift in Barton Model 384 Differential Pressure Transmitter. Transmitter Recalibr.Transmitters Scheduled to Be Replaced

Event date:
Report date:
3061980027R03 - NRC Website

text

.

O (7 77)

LICENSEE EVENT REPORT CONTROL BLOCK: l l

l l

l l lh (PLE ASE PRINT OR TYPE ALL REOUIRED INFORMATION) 1 6

] l M ! N l P l I l N l 2 l@15l 0 l 0 l - l 0 l 0 l 0 l 0 l Ol -l 0 l 0 l@l 4 l 1 l 1 l 1 l 1 l@

l l@

8 9 LICENSEE CODE 14 LICENSE NUMEER -

25 26 LICENSE TYPg JC 67 CAT 68 EON'T [TTTl

%RC @l 0 l 5 l0 l 010 l 3 l n i s l@l 0 l 911 l 9 l 810 l@l11011 l718 l 0 l@

7 8

60 61 DOCKET NUMBE R 68 69 EVENT DATE 74 75 REPORT DATE 80-EVENT DESCRIPTION AND PROBABLE CSNSEQUENCES h 1012 l l During normal operation, steam flow transmitter 2FT-474 was observed to be l

lTT'n I reading low. At recalibration it was determined that the MSIV closure signal l

lO64l l and reactor trip signal from this channel would have occurred as much as 1.15%

l l0 isi l above the Tech Spec limits. Tech Spec Table 3.5-1 and -2 apply. Recent similar l

l0 is l l event was R0-80-08.

Appropriate bistables were placed in trip. No effect on l

['isTF1 I public health and safety.

Redundant devices were operable.

I 10181I I

80 7

8 9 DE CODE S SC E COMPONENT CODE SUS ODE S

E g

l C l C l@ y@ W@ l Il Nl Sl Tl Rl Ul@ W@ W @

7 8

9 10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LER!RO EVENT YE AR R EPORT NO.

CODE TYPE NO.

@,aj,%

18101 L---J l 01 21 71 W

l ol 31 ILI B

O

_ 28 22 23 24 26 27 N

M 30 31 12 K.

A O

ON P NT ME HOURS SB i FOR 8.

SU L MA F CTURER [E_j@lCl@

[Z_,,j@

l,,Z,,,j @

l010 l0 l0 l d@

W@ d@

lIl2l0l4l@

33 34 3b 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h gI Zero adjustment shift in Barton Model 384 differential pressure transmitter.

I gl These transmitters are scheduled to be replaced at the next refueling outage for i

g, i,i l each unit.

l Lt L3 I I I

mI l

f 8 9 80 h

ST 5

% POWER OTHER STATUS dis O RY DISCOVERY DESCRIPTION NA l

l A l@l Operator observariait l

y W @ l1l0l0l@l ACTIVITY CO TENT RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE W l Z l @D OF RELEASE l Zl@l NA l.

l NA l

7 8 9 10 11 44 45 80 PERSOENEL EXPOSURES NUMBER TYPE

DESCRIPTION

l 010 l0 l@l Z l@l NA l

i 7 PERSONNE L INJU IES NUMBER

DESCRIPTION

fit 1 10 l c l 0-l@l NA l

.8 9

11 12 80

' TYPE DESCR PT ON l' L?.J 1.Z J@l NA l

7 8 9.

10 80

~ PUBLICITY NRC USE ONLY NA 8010210 70 ISSUED

DESCRIPTION

l llllll1ilIiili j

W hl 2 O 7.

8 9 to 68 69 80 5 i

ad 612-388-4767

{

. NAME OF PREPARER PHONE: