ML20085A501
| ML20085A501 | |
| Person / Time | |
|---|---|
| Site: | Oconee, Crane  |
| Issue date: | 06/27/1975 |
| From: | BABCOCK & WILCOX CO. |
| To: | NRC |
| Shared Package | |
| ML20085A494 | List: |
| References | |
| TASK-03, TASK-3, TASK-GB GPU-0489, GPU-489, NUDOCS 8307060537 | |
| Download: ML20085A501 (1) | |
Text
?
., n.. v a. i. <
p
" _-3
}'
. A
N, i
. n. i. i t,. u b l. c.id R....v un i i.u.. '..w..."..u-r. i, r..
1 t
' (
Cusic"ER Oconce III C0!!!3ACl hD. NSS-c9 FPR H0.107 R E *i. O.
s YENUD!! Dresscr P.'O. NO.2015CLs TASF. HD.
28 g:10gp nc, t.1 I
i SE Q. ni,:.00:
Sl1E EN31i:IER F.C.crisbaum N3.ra-..m-- U" r,rg". r.
,. r....,
" " " U '-
D....' ' ' '
iliL'c For info only 1'
J.ECTP.0&\\ TIC PJ'.LEIF VALVE HALFUl:CTION G SC:iP1;CN OF rHCULEi!
pars. tion to cold chatdo:n for RCP setl replacement.On Fricay, June 13th, Du During the t'rsnsition from l turbine to turbine bypass the primary syste-; experienced a pressure transient to 2267 pif;;. The power relief valve accussed at 2257 psig and failed to close. This,
, caused the Quench Tank ' upture dis:
r to rupture. Failure to promptly c1csa :he couldc.ra rctes cud RC puaps NPSU curve. power relicf isolation valve c j
Inspection of the power relief valve af t-8
,l prevcating the. main vulve f rpa.e,t,scatin;;. F,estrain,/
r
_ter.rr. w a_ _ p _a e ~
e4_o t w e.n..
tn o na.
rhe l a
S!!.iUs.1.Cil0t.' Tu nhiE li@.ilulld 'Pf350:15 C0dTACfEd JT Janis HSD, Lynchburg, KR Ellisen, NSD, Lynchburg, advised of problem. Valve has be:n repaired (6/20/75) sud reinstalled. Repair wcs effec 4
w1-:.J.1,.c v
.'im.a..
-. ere '*!.".thLtshd L0 rschiur t.L: M "' %
e iUnind: 1.C1l0F RECC:nt:GED bY SITE PERS0nHEt.
Sites be advised to conduct periodic inspection / operation of vs1ve to insure cperchi3f.ty. )(nen plant shuts down, perform manual / visual checks for freedota of mociens.
, f..
u:'
1 A d!Rp^ s*s.r*. t ') en
..,.:< u
.s...... w....a....
s l ta.,. r 71..f t ...n va n 9
t.w. l
)
.,,. e e w-
}4.:.
1 p.
RI h,..,.
l fr. /s2 w l*
___ _ _,,7.:./n;.
c Lbil0h See further action. V j
1 i,
g 1.PP30'/CD BY S tGilA(URE
%- M..,!
N. S. S!!LPFG t :NGigjR I
3._! Tr.SK ENC:NEER /M.S. UNIT ltAU!.FER!
I l
, )
s,
.e l
QFoi.Si!.CT l'? r.S3MCHY. T. Tulki. E.M.-
l l
P.X l
PP.0jEC1 f.N,*.CEi1/ CLiftf.CT ENGINEEH !
J
_,i t
cCST c T::imy C.) Ennn C c 00 O t:
Oi O YF NDGii u...._. m_
}.AUTH.(
! O FIELD C!!!.HCF. REQ
,.e,u:r=.
=,..,1i3 6 5 nn.
3
...... _.. -- r
_m., ar.:=r.,m r.==
n em. c.v!,.:n ;-!S.
!! FiIE Lt:.:P' ET IJ;.' RE!"Jui i
- e. :.r.=..e
.w =
r,.:...
1 I,
8307060537 750715 I
PDR ADOCK 05000289 I
',.:d j
s not 1
.! tet i..n c
.. :.__ _ _ _. "s a_::enE O s r r.:; r w e up.
.. 1
...... 7,
- .,. i m......... t,,
- i....
u i!
~B2J;1.18 t._, s. : s.. e::p r:re, t...cm:;;.t l
....... er,rt i.
.