ML20084C921
| ML20084C921 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 07/16/1974 |
| From: | Carroll J, Parsall R JERSEY CENTRAL POWER & LIGHT CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| AO-50-219-74-40, NUDOCS 8304080350 | |
| Download: ML20084C921 (3) | |
Text
{{#Wiki_filter:-- i ....i
- To:
Ja:nes P. O' Reilly Di rectorate of Regulatory Operati ons Region ! 631 P.rk /xenue ,T.\\,\\ pdf - King of l'rossia, Pennsylvania 19406 ~~, /.,v/ s.A ~ x- /g' (k v' f ', y /( h ' i s e,.,a - C'g t.. c \\$ _.n v ea o F ror.i - Jersey Cer. tral Powet
- f. I,i nht Co:: nam ~.)
,,, i..... "g s, a Oyster Crc 'Juele av Generat.inr. Si at ; qa t <</ Dack e: ~ 219 \\ Q'N d s,'.. 'M ,,/ W-Forked 'i ver, New Jersey 0873) N t Subjnt. Ahnornial Occurrence Report No. 50-219/74/40 The folic;.ing is a prelirinary report being subnitted in compliance wiih the TorbnicM c, m ri ri c:
- i r ~
p..rm.vap 6.>, r J J r f h -- /??? / k ' 7/16/71 T! T. Far2c11,.fr. y u.- l } -\\ {t r. \\ I[f)/\\', \\. ? \\\\,O/j) l ( (J l 8304000350 740716 /'y DRADOCK05000$ COPY SFN1' REGION /, i, t
i Initial Telephone Date o 3 Ituport Dat e : 7/16/74 Occurrence: 7/15/74 4 q Initial 1lritt en Tir:e of j Report Dat e : 7/16/74 Occurrence: 1400 OYST!ilt CREEL: NUCLEAR CliNIIRATING STATION FORKED RIVli!t, NE!! JEllSEY 08731 Nmomal Occurrence Report No. 50-219/74/ 40 r IlEN f1FI CAT 10:; Inoperability of one Bergen-Paterson !!ydraulic Shock and Swdy OF OCCU!!!1:CE Arrest or locat ed on the scutt' core spray systen in the drvwell; This event in considered to be an abnornal occurrence as de-fined in the Tech: 'c,1 9 'c!4 ! c ra ! cr.s, p ra3raph
- 1. ; ", r n d '
t OJ'.!H T10XS Hu O'. TO OCCIE:RIN Ct Steady State i;o.eer ~ Operation Routine Shutde..in llot Standby I Cold Shutde n 1.oad Changes During _ _ tciuclin .,auido.u emo r,,m "e.7er ope r:.ti er, lloutine Startup x Othc r (Speci fy) Operation The reactor vas shutdcen.i t h react m c to ta p rature ~ 1 ] css than 21:0F. DESCRI PTION An inspection of the dryuel] shock and sway arrestors, 0F OCCURRENCE. ' erf c: Pat erson Type IF."A~ 13, J ocnted rn inoperabic unit en the south core spray system. The inoperable unit was installed e in the drywell during t he Snring hefueling Out ar,e a ft er i t hr..i 1, rel 1 -{ 1; Ai7id 'V: !9 ~ < Pre e6re l 0:- (L L'l; 4: 1.'
- n. ! b c i o :
Unusual Servir< Cm htion Insta li:'t i m Inc. Environi:> nt al Conr t ru ct i r n X Compo1ent Fai l ure _ _ 0;irrnto. Other (S p e c i.y ) I I l 1
3 Abnormal Occurrence Rep art I,'o. 50-219/74/40 Par,e 2 1 The cause of the snubber inoperability was due to loss of l hydraulic fluid. Examination of the unit revealed two small cuts on the rain cylinder shaft U-cup caused by burrs on the piston. K1ALYSIS OF The s a fe t '.,i gnifi cance of this occurrence was a partial loss OCCURRENCE: of seisnic restrainine ability for the affected systen. 11ad l the plant suf fered.. der.ign bases carthquake, the probabili ty 1h;t the enn h core spra wsten unuid have suffered structe,' w u, ao: l CORRECTIVE The failed unit was replaced with an identical snubber which f ACr101: } .-s Ichuilf 1:ith et Im1 on.. pynpy1ogn r,-tr~j7,1 333 779,, 3 3 7c test ed to 4,000 psi. FAf LllllE InTA: Manufacturc - !!e rg en - P - m l 'l ype - IISS 't-1 C i Serial Ke:.ber - 487F i i s i i 4 s i i i i I l l .iq r, 9 'ccparcd hv .\\.J.1 N'. h (.'L8 6. q )k n 1 Dat n ; 7/l f,/ 74 y .}}