ML19276F883

From kanterella
Jump to navigation Jump to search
LER 79-014/03L-0 on 790327:trip Setpoint Drift of Drywell High Pressure Switch Was Beyond Tech Spec Limit.Caused by Static-O-Ring Model 12N-AA4 Being Out of Calibr Due to Setpoint Drift.It Was Recalibrated & Returned to Svc
ML19276F883
Person / Time
Site: Peach Bottom Constellation icon.png
Issue date: 04/17/1979
From: Cooney M
PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-79-014-03L, LER-79-14-3L, NUDOCS 7904240326
Download: ML19276F883 (1)


Text

= __ _ . - _ _ . _ _ . _ _ _ .. ..__- _ - __. -

8 Mr. Boyce ti. Gr ice, D irec tor No. 2 14/3L l Cffice of In spe c t i on (, Enforcement, Re.; ion !

. U.S. Nscle e Replatory Cur:1issian 631 Park 1<enue

', King of Prussia, PA 19406 De ar Mr . Gr ie r

< This L.E.R. refers to the trip setpoint drif t of the drywell high pressure switch beyond Technical Specification limit in Table 3.2.B.

u. s. Nuctsan arculatony coMuissios LICENSEE EVENT REPORT I l l l l , pts Ass ensur on tres ALL ascuinto euroRMATaoN) costaat eLoca. l, l

2 e e lP l uce.no A lPcnt I B l aS l a2 I@h l] l-s. la usa e eu h h l' l 0l0 ])as10..l@l!4l!!11II'l@l 6.ussa 1 ra o u4 l .4 @

con'T E "

Ee' l._J@l0 l 5 10 - 13 l2 l 7 17 l@l01312I7l7I9 @l0l4t1!7t7l9 g svENTDEsCR TION A*.D PHC9 ABL C G EsCEs 10121 'Jht le at power. during routine surveillant estinr. the trio setooint

[,o,_QJ l of IItaturt_8 Hitch 2-10-101D (drywell hirh pressure) was found to be foTTl l above Tech. Spec. I t:ni t in Table 3.I.B. (2.45 vs 2 psig). This device i

[o lsi i givgjs_a_permis sive to start etnertency diesels, core soray ard MitI I lo I61 l pump.s._S a fe t y significance wa s minimal since redundant channels t El ve rc_ operable-6 o 8 l E 9 9 Sv5f E U CAV5f CAV5E CO"8 sawf CODE CODE Steccat CO*W,Nt NT CCCE SveCCDE 5.3CO:E o s IS Ir wl@ L..rJ@ L,EJ h .l,I l N l S l T l R l U lh [S_j@u y @ ,4 ,,

u c. E s riat occ.sa acs amarat aavis>on

_ EVE %fVlAM A(PO** f NO CODE fvF4 No b g[ajO,".T p, 7 l9 l u [, -J l 0 l 1 14j y

v

[0_,,[3_j

., n

[L_j

[,-J Wu Ya'.'a U '$$s' o,74S r 5"Yv3$7

,s 5 @ '57 ,'1"rl O' ,c7 S's5 "YtE va'sYlNOle, g[Z JJ g jh I,Z_j@

Je Wh b

l0[0l0l0l W@ [Yj@ W@ lSl3[8l2' 4* 4J 4h 4J 44 44 4.

cAust cescmerics aso cocccTivs actro s @ '

i o 1 The instrument, a Static-0-Pi m m ool 12N-AA4. was out of calibration due t o s e t pp_ int dri f t . It *ms i gediatelv recalibrated. testod. .nd i

I

  • Iil I i / I returned tn service.

i

, , I 8

i 4 1 r . .,

CT*.E 4 57 A TV5 e 0'5A f av 0I 5;e *0 3*.

Sia '.

  • 3.' t a ,

j W@' l i s [g_JO I 1101 Ol@l NA Surveillance Test

" o a a *

. ' , , , , , . v . u .. ,

ha t.I A'i n F 4184

  • AUOt %Y oF ACTi% s ty LOC 4TtOs OS Hi t( ASE x^ l I "A I ldf) u;.J (3 L,ZJ31 F It 'l 8 tt 44 45 d' d'e sa s iia me l. 3 L' E j 10l ol gj C b $ NA _

f

,. . .ns,'.., "

C DI '

s L,.i L-J. L. O 1010 ICI

... s@

s^ 9l' '

( .

,...0Ir4YA 1 '. p l t j f Ap g a f y 4 '

o FT9 L;jpl NA O r . v r.nc t.st cstv y . ..u. j

10 M, W8 ls .< n v.0 NA / / !' ' l II II IIlI !'

o .,

p , , ,.,

(215) gi-50;0 M./ J. Cooney Cll) savt ce enteanen r~est Rc -