ML19323F208

From kanterella
Jump to navigation Jump to search
LER 80-010/03L-0:on 800421,while Performing Surveillance Test,Lpci Injection valve,MO-3-10-25B,failed to Open.Caused by Lack of Guide Clearance Between Valve Disc & Valve Guide. Valve Was Repaired & Stroked Satisfactorily
ML19323F208
Person / Time
Site: Peach Bottom Constellation icon.png
Issue date: 05/21/1980
From:
PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-80-010-03L, LER-80-10-3L, NUDOCS 8005280647
Download: ML19323F208 (1)


Text

Mr. doyce rt. Ge o.r . 0 , a.c v No. 3.go.lof 3t N f k e of t e ge t : ..n , i n f, .rmc en t , Regi.n 1 3.0. u#.!co r i epa,torf (c.m s. ion .

631 P a r t. A~enua W g of Pru W a. l'A 1Y4e Dear Hr. Gricrs This LER concerns the failure of the LPCI injection valve (253) to open during surveillance testing. Governing Tech. Spec. is 3.5. A.5.

U. S. NUCLE AR REGULATORY COMMIS$3ON LICENSEE EVENT REPORT ccNmot stOce ! l ' t i NEASE PRINT OR TYPE ALL REQt,;1 RED INFORMATIONI

}@

I

'-'Gl l 7 !A ! P ls !s ! ? .Wh Ic i !sm. la

. m Ev..E , . m . 1, ~3 E!c .~~h !c l- Io 10 o l@l a all

-n,.~ h li !! l@lu w l@

.2.,

ai'i IE.T';LL_i@lo15! 1 a 12 ! 7 !a Gi6Jo ! A 2 li i s t o sei@lo i sREPGRT 12 !1 ts to50l@

l tw t.. /).u g T wvc f ** kvtN T QATE 4 Qa tt E'. P.T OFSCAPY;ON AND PC1ASLE CCMEGwsNCES h'as

, ,i;i i While performing a surveillance test with unit at power, LPCT infection I gi valve. PO-3-10-253, failed to open. Second attempt to open the valve was l

.. i; L successful. Prog-an of restroking valve was begun on decreasing frecuen- t iW [ ev basis. Valve htd been stroked successfully over twentv times with no I ml , further problems. On 5/3/80. unit was shutdown for recirculation om i
1. > i ' i .

seal maintenancedcsrection of valve was initiated based on a si-itar l T ', __ prev.ious oc lirgen.;p described in LER 3-80-3/ 3L.

. I

.9 W .t > V # ed ..a s,t COMP . Agyg

%s si . . .at .t.,aF %t ,CMPONEsTCC6d M BCCCE iwtsCGGE

p. i I !siFj6j W @ W Q lV!AlLlVIElX]@ y @ y @

s .e y i i ,e av .a tE L ENT'.h oCCwnkENCE RE*CRT AEvtssoN

@; l t 3

1 l$ 1 lbl y 0 if j g m,,

Lv -

2. .. n .. a -, ai u set.cN .n *m% Ar ac.ve%r  %,au enue cow. ccW,onENv

" MEN a ' 9N CN 8.. a* T v(twoo e ns 77 SweUs T TE D FoMM M ELP*uEm MA44FACTbm(R t Zi@.LZj@ W3 LO 4 'a u .10 10 84 88 I W@ W@ W@ IViol3folf

.Q 4. eg 43 44 ep mst cesn.P fGN A A.D c3 69VE ACD0%

f(;"'1 f The Walworth 2I." gate, pressure seal bonnet, Mark 10-M3 valve had a lack i ri,; of guide clearance tet een the valve disc and valve guide. The t i., , ; talve was repaired, a leak rate test was perforred, and the valve was ,

.ggl stroked satisfactorily, g e Isl I }

80 kEaN.I b ewe n Wal43TATh5 34 f 3tsCQVERY OESCR.8T80%

,. , { [Ej@ l1 10 l0 [@ [ TA { Ql@l Surveillance Testine l

  • . iun w. sur

..a.se 0,

  • au, . ., Gest u -::- .ocAT:oN u ,Eaise @

&, L,E] @ i,.:.j@le FA @ "l l NA u

. . s._.. % . m wv ta o h sj .n,a*vN t M

.i!oforo Q :j@l e , o ,. a G ,

I se

. .%s,.u m . m

ta.m.ss \  ;

c '

t!n in!ntSt :A I

mm m

', . omsa_f , , , . u6 3-i'i "^ D D D L J6i n n 51 I

. ,in ie.o e o .J w o Ju oJu.a..suua w

. a,. .w , w.u' . ,% Q) uc g aty

,s' s

t W W31 . ,

NA /' / l a ..

l8 I I ! ! l t I! ! ! I; a.

f m* rs 2*s.tc '

~ ~s o os28 0 6 4 7.b ,,,.,y;w ,

_ . .