ML20140G343
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TRELIMINARY NOTIFICATIOS OF EVEN! OR ENESUAh OCCGRINCE -F5-75-53 k
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I f-5 This oreliminarv notificatien constitutes EARI.T notice of event 3 c.
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POSSI3LE safetv or cublic interest sicificance. ne infer:atien g
F oresented is as init4*117 received withcut verificatien er evaluati.,
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and is basically all that is k=c m by OIE s:af f as of 1:30 9.:. en the y j 1N date of this notification. IT SECUID BE 5FIC1FICALLY Nww ~ EAT ~EIS I
NOTIIICATION MAY CONTAIN INF03MATICN TEAI 1.CER MAY 3E Dr.ur/!ED 20
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D BE INACCURATE OR INCOSSISTENT. AN CFFICE 0? T5SPECI' ION A'O IFFORCD.rM M
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NOII?ICATICN OF AN INCIDIST OR OCCUR 3.EICE (3LUE..tti) SE3SIQUWilT I
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VILL ZE ISSUED IF WARRAMw.
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Facility: Pilgri= 1 8esten Ediscu Ccepany
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4 Subiect:
BIND 0VN DUE TO FAILUEE OF A SAFETT/ RELIEF VALVE TO TdSEA' FOLLCVING MANUAL _L605 l
l The licensee reported that at 12:55 p.n. en July 20, 1975, during an attenpt to ressat the D relief valve which was observed to be le2*3, the valve was manually actuated; havever, it did not reseat. The reac-i s,,,
1 ter was nanually scra:=ned. ne attempt to properly rescat the relia!
valve was conducted at operating temperatura and pressura and a rasctor 5
pcwer level of 54:. The reactor pressure was reduced fren 980 psig to 200 psig at which tine the valve elesed. All systens operated nor: ally 5
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during the shutdown. No er.arge=cy systens vers requirad. The suppres-sien pool te=perature reached a ta=perature of 112 degrees 7 during the'
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blesdevu. ne licensee is investigating the cause of the valve failure i
Region I axpects the plant to be shutden
[,and the effects _of the blev.cwn.
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for 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />.
I Media interest is expected because of news attenties being given to
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Pilgrin 1.
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E na State of Massachusatts is being kept informed. A press releap
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is not planned.
OIE received notification of this cecurrence by telephone froma the licensee at 1.1:50 a.n. en July 21, 1975.
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contact: TAdreher, 1E 27261 HIrrhornburg, IE 27353 JGDavis, II x7541 Distribution:
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Chair:an Anders Cemissioner Mason S. J. Chili, SECT 5
Cecnissioner Gilinsky Cc:nissicuer Revden G. Y. Furthv, JCAE
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Cc==issicnef Kectedy C. C. Ka:: merer, CA l
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s L. V. Cossick, EDO D. F. Ecuth, II J. A. Harris, PA 1
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~ B. C. Resche, FRR H. H. Brevn, ISP T. J. McTiernan, AIA j
j K. R. Chap.lan, 3 MSS E. K. Shapar, EI.D
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- MK33
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i PRELIMINAKT N(r!ITICATIC3 - NO TOR PU3LTC DISCLOSURE t
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8604020191 860114 l!
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- 1 July 21, 1975
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3 FRELIXCIART 50TITICAIIO5 07 EVEN! OR ExtSUA1. OCCURRE' I g
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This prelininarv notificatics constitutes EARLT notice cf event 3 c-f
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POSSI3LE sa.fotv or cublic interest sisnificance. The infer:atienN i
presented is as initially received witheet verificatien er evaluatic:.
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and is basically all that is be n bv OIE s:af f as of 1:30 0.n. en ths y[
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dte of this notification. IT SECUG BE SPIC 1 fit'til? Non u ~ EAT 2IS I
NOTIIICATION MAY CDNTAIN INFCEMAHCN IFLT 1.LTER MAY 3E DuufTYED TO
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EE INACCURATE OR INCONSISTD'T. AN CTFICE C? IN5?ECTION A'O IFFORCEhh NOTIFICATION OF AN I5CIDINT OR OCCURREICE (3trE sen.D SUBSIQNT i
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VILL 3E ISSUED IF WAR'G'u.a.
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N Facility: Pilgri: 1 3
Bosten Edison Cenpany
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Subiect:
BIGDOWN DUE TO FAIGRE OF A SA?ETT/ RELIEF VA151 TO RESIAT f
h FOLLC%'I5G MANUAL ACTUATION l
The licensee reported that at 12:55 p.n. cn July 20, 1975, during an atte=pt to ressat the D relief valve which was obsez sed to be les'dng, the valve was manually actuated; hcwever, it did not reseat, ne reac-
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ter was naz:ually scra=med. The attempt to properly resent the relia!
talve was conducted at operating temperatura and pressure and a rasctor wer level of 541. The reactor pressure was reduced frem o80 psig to 200 peig at which tine the valve c1csed. All systees operated nor: ally during the shutdown. No er.ergency systema vers required. The suppres-
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sien pool te=perature reached a ta=perature of 112 degrees 7 during the'
.gl bicudevu. ne licensee is hvestigating the cause of the valve failure M_
i Regicu I expects the plant te be shutdevn
['and tha effects of the bicvdewu.
for 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br />.
Media interest is expected becausa of news attentien being given to I
Pilgrin 1.
The State of Massachusett: is being kept informed. A press releasa is not planned.
CIE received notification of this cccurrence by telephone from the licensee at 11:50 a.m. en July 21, 1975.
Contact:
TAdreher, IE 27261 EDThornburg, IE 27353 JGDavis, II x7541 Distributicu:
Chairman Anders Ccmissioner Mason S. J. Chili, SECT
.' l Cec =tissioner Gilinsky Cemissioner Revden G 7. Murphy, JCAI Co=issionef Kecnedy C. C. Ea= merer, CA f
L. v. Cossick, EDO D. F. Ecuch, II J. A. Harris, PA
'- B. C. Resche, l32 H. H. Brevn, ISP T. J. McIiernan, AI).
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K. R. Chap.5an, 25$
H. K. Shapar EG I
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- Luge gi PRELIMINar mmCAnC3 - No; FOR MCC MSC
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