05000260/LER-1981-003-03, /03L-0:on 810112,core Spray Pump Discharge Pressure Switch 2-PS-75-16 Found Outside Tech Spec Limits. Caused by Setpoint Drift.Switch Recalibr & Replaced

/03L-0:on 810112,core Spray Pump Discharge Pressure Switch 2-PS-75-16 Found Outside Tech Spec Limits. Caused by Setpoint Drift.Switch Recalibr & Replaced

ML20003B218
Person / Time
Site:	Browns Ferry
Issue date:	02/04/1981
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20003B211	List: 05000260/LER-1981-003, Forwards LER 81-003/03L-0 05000260/LER-1981-003-03, /03L-0:on 810112,core Spray Pump Discharge Pressure Switch 2-PS-75-16 Found Outside Tech Spec Limits. Caused by Setpoint Drift.Switch Recalibr & Replaced
References
LER-81-003-03L-01, LER-81-3-3L-1, NUDOCS 8102100523
Download: ML20003B218 (2)

LER-1981-003, /03L-0:on 810112,core Spray Pump Discharge Pressure Switch 2-PS-75-16 Found Outside Tech Spec Limits. Caused by Setpoint Drift.Switch Recalibr & Replaced

Event date:
Report date:
2601981003R03 - NRC Website

text

NRC FdRM 2f,6 U. S. NUCLEAR CEGULATT.GY COMMISSION (7 77)

LICENSEE EVENT REPORT

.s CONTROL BLOCK: l l

l l

l l lh (PLEASE PRINT OR TYPE ALL REQUIRED INFORMAft0N)

I 6

10 l1] l Al Ll B] Rl Fl 2l@l 0l 0l -l 0] 0l 0l 0l 0 l -l 0l 0l@l 4 l 1l 1l 1l 1l@l l

lg 7

8 9 LICENSEE CODE le 15 LICENSE NUM8ER 2$

26 LICENSE TYPE JO

$7 CAT 58 CON'T I0l11 37,"c' gj 0l 5 l 0l 0 ] 0 l 2] 6 l 0 @l 0 l 1l 1 ] 2 l 81 1 @l 0l 2l 0l 4l 8l 1l@

7 8

60 61 DOCK ET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCPIPTION AND PROBA8LE CONSEQUENCES h Io i2l l During normal operation while performing SI 4.2.B-21, core spray pump discharge l

10131 I pressure switch 2-PS-75-16. which defers ADS actuation, was found_2.8% out of l

10 l 4 l l T.S.3.2.B limits. Redundant switches 2-PS-75-7, -35 and -44 were Operable.

l l o i s i I There was no effect on the health or safety of the public. Previous events:

l l0is1 I 260/8055, 259/8046, 259/783 and 259/7337.

l P

10171I I

l t o tal i 80 7

8 9 bOE CO E s oC E COMPONENT CODE sVSCOO'E E

l0l9l lI lB l@ l X]@

@ l I l N l S I T l R l U l@ J@ l Zl @

7 8

9 10 11 12 13 18 19 20 SEQUENTI AL OCCURRENCE REPORT

. R EVISiON L E R/RO EVENT YE AR REPORT NO.

CODE TYPE NO.

@, REP g l218l1l l---j l 0 l 013 l y

l0 l3 l l Ll 9

l0 l 22 23 24 26 27 N

N 30 31 32 T K r ACT ON ON PLANT M

HOUR $ 22 SS l POR 8.

LE MANUF C RER l E l g ]34@ QQ

} Zl@

l0l0l0l l gg l2Njg lL]@

lMl2l3l5lg 33 35 36 37 40 41 4

43 u

47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 27 Illy 1 Mercoid Model DA-7004-804 had drifted out of tolerance. The switch was l

l1 IilI inspected, recalibrated and SI 4.2.B-21 sucessfully completed. The switch was I

i,i2l l replaced with a new switch on January 21, 1981. No further action is planned.

l l i 131 1 I

l litali so i

a 3

's'i AWs" OrwERsTATus b "isEOSOv' sPOweR DiscovERv OEsCRiPTioN li Is l l El @ l 1l 0 l 0 l @ l NA l

lB[gl Surveillance Testing l

A2TiviTv cO0 RENT I

aELEAsEO oraELEASE AMOUNT OF ACTIVITY LOCATION OF RELE ASE NA l

l NA l

lt l6l

@ U@l

• ERsOw'Et ExposOEs oEsCRi, TION @

auveER TveE l i l 7 ) l 0 l 0 l 0 l@l Z l@l NA l

,ERsowE'tmu' dies d '

OEsCRieTiON@ '

l NuesER li la l l 0 l 010 l@l NA l

l r

s 9 11

'2 80 LOSS OF OR O avage TO F ACtLITY rvPE C E SCRi' TION NA l

y W@l r

1 3 10 30

.ssu[~"" OESCa TION O

""C "S NA I

l l l l l l l 1 l 1 l l l:1 I 2 I o l LNJhl F

q 9 10 68 69 80 $

l O r l

NAME OF PREP ARER PHONE:

1, 8.10e2o0523

k

i"enn. stee Valley Authority rorm BF-1"

)r.,wa:. Ferry Nuclear Plant B F 15. 2 1/10/79 LER SUPPLEMENTAL INFORMATION M:tn 50-260 / 8103 Technical Specirteaton involved __

3.2.B Rop.ried Under Technical Specification 6.7.2.b(1)

bt..f Occurrence 1/12/81 Tune of Occurrence 0900 Unit 2

iden i::;ntbn and Descriptjon of Occurrence:

Core spray pump, discharge pressure switch 2-PS-15-16 was found 2.8% out of tolerance while, performing SI 4.2.B.21.

The switch was found set at 170 PSIG.

r.ac:t:<>ns Prior to Occurrence:

Unit 1 at 99% power Unit 2 at 100% power Unit 3 refueling A rti - specifici in the Technical Specification Surveillance Requi:enents met dur:f anopergle equipment.

Describe.

None App _

at Cause of Occurrence:

Instrument drift A n11. i t, of Occurrence:

There was no danger to the health or safety of the public, no release of activity, no damage to plant or equipment and no resulting significant chain of events.

FN:

' "Ic A c t ion :

Inspected, recalibrated, tested by SI 4.2.B-21 and returned to service. The switch was replaced on January 21, 1981.

i P.u;u:

.).tia :

~ 260/8055, 259/8045, 259/783 and 259/7337.

i

• l; t < n,tjon :

Period - Lifetime; Responsibility - Administrative Supervisor

'Revil.an:

(

,w e

v

.,e--

w e w%v er*

- t----

4-=r-

---r-T

• w t-*-7e