ML20049A587

From kanterella
Jump to navigation Jump to search
RO 81-32/01P:on 810502,feedwater Vibrations on a Steam Generator Feed Line Damaged Snubbers,Shims & Shim Retainer of Vertical Energy Constraint.Cause Under Investigation. Steam Release Calculations Will Be Refined
ML20049A587
Person / Time
Site: Beaver Valley, 05003348
Issue date: 05/04/1981
From: Werling J
DUQUESNE LIGHT CO.
To: Grier B
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
BVPS:JAW:1164, RO-81-32-01P, RO-81-32-1P, NUDOCS 8106050148
Download: ML20049A587 (2)


Text

AHf/f1A=-,Y pQ

'AVN ouquesneusta e=*-

  • A 041QtlFSWR I.tcitt fX1ffrANY Menver Valley Perver Station Foot Office Box 4

.ih i pp i respo e t. PA 14071 May 4, 19A1 RVPM t JAU e 11(>4

! s to/

Me.ever Va 1 t e y rence 'I t a t l e.n, l' nit Hay. I gi 4

twcher Nn. 50 1 M, I.f eenac Mn. PPH f.6 1

f 6

f.I R fil '82/OlP h6 L

,. J i i -

g 1.voctA2IL M 1 p COG 1533Cl4 H..

P. St. retar; li t r ec t ne of Peg.el at ion 0'\\@

Unitel Statea Itne lene M e n is t.= t ne y Cer,*fmateisi

..i > - 3

/

Fepton 1

.t, r...

-..... i..

Feng s.l Pruaeln, Pennavlvanfa 1940(i Dest lir. f:, tert 1

acreer.l.nre wi t h Apper,4 t n A, Benver Va l lay Tectnele n t Spectftention 6.4 f.M.5, the ( al l nie l rig w a s r e s.ne t ed b y t e l e phr' tie to the Witt' R ea l ef an t.

Innpectne, He.

1 vi. Itegise t, et 0l.10 henrn, end to the Fitr, wie the Fmergency Mneietaafvan Sywtc=. at 0770 honte on Itay 7,

1988, At 0131 bnnea e.in Pt n y 7, l'161, a f eed f le.ss pre *ter t hars n t en.a f l eme alarin we ar e n's t ed on i nc ident te t tle e facetustet vibration.

F( ema) cont. int of the "A" gener ne ne (c t flese#:nntrol valve wee p e nuw.e d a n.1 turbine loa.1 vae ete r e.t... e t in en atteerpt to stabilire the "A" nterim generator, Tvn v ore vibrations vere e. rettenced velow t<>the re.ictor trip nt 0108 konge dua e n hinh-blah level in tha "A" arca= penernene.

ol' t=*se*=

tevealert 1

At m 8.n n t l '4 t H) loint a on May 7, 19111, ey, cancan-ent that i~ ' = t da""ge wng t enf ineif t o (fie "A" fand line.

Ime st a-a g e.1 ennbhere. two Inone enebbeii, d ev = 1 p m to the elil e e evid ch fia retainer sif crie ver t Icesi energy ennetrefne, end dn.are to atrncenemi bolta of a n e r e n.1 sentleal energy constraint w e e.. ebeceved inntac rent a l ement.

Tha "A" t-atn feed reentating value mustained

, atar.innereed i a e db a ci. )cuer,

.e 1 e.on e actuneor, nii.1 1.e #4 en va l ve. niem.

The "A" a n. t "(. " bypmaa f I ni, centei1 vsive.e woe ' a I ne d b e ott eet ( nr t r ue-an t afr 1inee.

Mieer a===ge in the fee.l Line innu t llar ies waas m i no sibste rved.

8106 o n o /W y

m-

Mr.

M.

M. Ceter Ney 4, 19H1 IWllf.IAW!11f.%

t'e nt e 2 r 4,e se t a f.ml ) I n e av I. n.e e ii pe. r { ne c.1 en 1. t I s e vit.,nrInne in g h,. p n.i t,

1.i v. e I y t o I <.n.i es v t n o t t ru. O ng gn et a t e : w. i ne I lic a n o t.t c o f flic vih r a t l atia.

,4.f.t i e I..n

)

1, f e., wi e i nn vi11 (allew in t l>* 1 % ele'y Il<< nice I v t.n f Meye r F..

I's. l l o. e i n,s.

sie g l

..e stip, si a 11 g),t e -..un t of c e r e., gr e, s, t e,s. c ci f eem e t,,

g. t,... e g,,. -.,,, ) s. r.. t v..

t,anar p T s..

7 4 wo: g,,aent in e l.e-1,.ller wri t e r I,. p e o r e -e a,1,

v. " e e e niam e s.ei t. l se c an t. ( sen t ee

(-

.,..--4.....

-.,..i;..,

l.-e em a

t. 'e

,+tc..e

-(

e I.I n i... r.sp r t ei l '.e si t s o + pl.e e

  • liv. ee.nnervat(VC g,g M.g g ife

. i,,..e n.)

e 1.,s e i I,..

,, t..e....

n.. l.. p.:

}. 3, c y.,...,1 c 4

. 1,.. i e i...

l.

..v.,

$0$ MfC.

tr-ei*i

f. e e. e... t i.. t t #,,e t tie r.c e es t c. i n e 1,u..,

c...?

g, t i 1

, g.n, g gim y (ese l

,..,,1i.

I,.

c.. e I.It

-r..e Veey t o nly your se,

{ ( hp. u s(f J.

A.

1/tetIng

?opcv int erufent e.e !

I' ( e g, t. e 4 e f it aet9yerve n f T. I' r o p t inr4 Ant 1y Ie t n t t

.) I',e n e e a tio. I ea r f.e g n I a f'.e y t. e'a.. I a a I t ti U.i mli f e.p o e.o, 12 C.

788 W e let.

een,,

v e d a t r e-t.f

(.s a p, < t l en, yt es t Fnf nee craest IIe * 'l *p i a t i ** r f.

t,'n t t e.,e c:,,en ti,,e i c 7,, li e pie l n e n y., t w.r f e. I a.,,

tt+ghfr ye.us, 91, C.

7 8 6 % 'i',

a ti. 7

( h -.ic y, (W l' 5

1.
  • s'ene l esp I's enjir r f )lattert t ten i e o.l 13.ie an Ibie l eie r 5.r 0.*l at tot y O ne...l n n (. nt p nl.f op e..n, It.

C.

  • / f l i ', '.

gi A,

p a.1,.... n,

t!..< l a.s e

f. e g..el M o r y f ee-~ 1.ie l et ti, It's pf: fi t t c I na.per e est-

. ; e r., y A..

tvetn (cno ce, t s 1. e. l t i., (:ri f f f r.r ei f e t

e.. t r e,

4: r. re..< 1.1

. r.ic: eer y M it no J l'ng,I ne e r i ng, I's e t niese, yle H,

, e._ 1... A

  • e.. e 1, p/t l'.it.1 I c ilt t I t t ien Os w= 1.e e I oeg, 113 e.1 e l.nt g, PA

._ __