ML18127A647

LER 1978-025-00 for St. Lucie Unit 1, on 07/31/78 Concerning Containment Vacuum Relief Valve (FCV-25-8) Instrument Air Supply Low Pressure Alarm Was Received. Cause Was Diaphragm Leak in Solenoid Valve Which Controls Instrument Air Supply

ML18127A647
Person / Time
Site:	Saint Lucie
Issue date:	08/30/1978
From:	Schmidt A D Florida Power & Light Co
To:	O'Reilly J P NRC/RGN-II, NRC/IE
References
PRN-LI-78-243 LER 1978-025-00
Download: ML18127A647 (4)

Text

REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS>DISTRIBUTION FGR INCOMING MATERIAL 50-335 I REC: OREILLY J P ORG: SCI.IM I DT A D DGCDATE: 08/30/78 NRC FL PWR'.LIGHT DATF RCVD: 09/12/78 DOCTYPE: LETTER NOTARIZED:

NG COPIES RECEIVED

SUBJECT:

LTR 1 ENCL 1 FORWARDINg I ICENSEE EVENT RFPT (RO 50-335/78-027)

ON 07/31/78 CONCERNING CONTAINMENT VACCUM RELIEF VALVE (FCV-25-8)

INSTRUMENT AIR SUPPLY LGW PRESSURE ALARM WAS REC"D...CAUSE WAS DIAPHRAGM LEAK IN SOLENOID VAVE WHICH CONTROLS Tl-IE INTRUMENT AIR'UPPLY TO PLANT NAME: ST LUCIE 81<<>w<<wcHs>+<<sHHHe DISTRIBUTION OF Tl-IIS MATERIAL INCIDENT REPORTS (DISTRIBUTION CODF A002)REVIEWER INITIAL: X JM DISTRIBUTOR INITIAL:~IS AS I OLLOWS<s<<<<<<+<<<<<<<<<<

FOR ACTION: INTERNAL: EXTERNAL: ,F ORBQ4 BC4I-4W/4 ENCL RFCr FILE~I-NCL ENCL I 8.C SYSTEMS BR>>tW/ENCL NOVAK/Cl<ECI')<.4 WlENCL AD FOR ENG4HlW/ENCL IRANAUER4+W/ENCI AD FOR SYS 8c PROJ<<W/ENCL ENGINEERING BR;H~W/LNCL KREGER/J.COLLINS~'.~W/

ENCL K SEYFRIT/IE+~~W/ENCL LPDR S FT PIERCE)FL+~~W/ENCL NS I C~~~W/ENCL ACRS CAT B>4W/16 ENCL NRC PDR+>W/ENCL MIPC<<W/3 ENCL EMERGENCY PLAN BR<<W/ENCL EEB."-4W/ENCL PLANT SYSTEMS BR<<W/ENCL AD FOR PLANT SYSTEMS<<W/ENCL REACTOR SAFETY BR>+W/ENCL VOLLMER/BUNCH<~4 Wf ENCL POWER SYS BR>+W/ENCL DISTRIBUTION:

LTR 44 ENCL 44 SI ZE: iP~1P SHt+%%8HHF SHHHHHM 0l+CSHf SHHt 5 3l<<<<<<5 4 Ml THE END CONTROL NBR: 78213-42 P III'K P.O.BOX 3IGO A'MIAMI, FLORIDA 33IOI F FLORIDA POhNER II<<UGHT COMPANY August 30, 1978 PRN-.,LI-78-243 W<<h Mr.James P.O'Reilly, Director, Region II Office of Inspection and Enforcement U.S.Nuclear Regulatory Commission 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 Dh<<j~h

Dear Mr.O'Reilly:

REPORTABLE OCCURRENCE 335-78-27 ST.LUCIE UNIT 1 DATE 0" OCCURRENCE:

JULY 31, 1978 TECHNICAL SPECIFICATION 3.6.5.1 VACUUM RELIEF VALVE The attached Licensee Event Report is being submitted in accordance with Technical Specification 6.9 to provide 30-day notification of the subject occurrence.

Very truly yours, Schmidt Vice President Power Resources MAS/mid Attachmen t CC: Harold F.Reis, Esp.Director, Office of Inspection and Enforcement (30)Director, Office of Management Information and Program Control (3)782i30342 p'lh'ELPING 8UILO FLORIDA iVRC FOA.'I KSn<7 77)L!CcNSEC c<J'cblT, R~I"ORT U.S.3<UCLEAR RKOULATORY 4'.IallsalOV CO<IITRCL SLCCKI I I~I I Ol (7LKAS+RIVT CA TY76'l.ASOU<R 0 Ir<RORalnT<O)I<

I Gl 7 3 9~lacsvsas CQQK'c>>$3"Icus I CC)I'T;,-.;::,;I,.0,;;: i r..Q~>,,'O~O st ca.<37<5.Y)L>'r 9)sv=~r Gars tr IS Rrp~ra Vt IVTOCSCR<7<IOV i iVOJRCSAB COJIS'iCSS QQ~Q2 Durin ower o eration a containment vacuum relief valve FCV-25-8 instr-ment air supply low pressure, alarm was received.The instrument air suppl to FCV-25-8 was isolated to stop the air leak, thus placing the valve in an inoperable condition (failed closed).Action required by T.S.3.6.5.1 was initiated and FCV-25-8 was, repaired and restored to operable status in 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />, 26 minutes (well within the 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> allowed).This was the first~Q6 occurrence of this t e at St.Lucie Unit l.CZIISK Cat<SS Cast 5 Vs I'ii r 4 cs cocK st'3 Qas Catppa>>SI<

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Q>>i.'ni: Lrr 0I'~oa I L~J.~+~1 LJ L~J I)31 ssJ<GJtrc r JJXr i S'rare Vtrl*I-.~ct stsi<T vpaa~pRt arccup, camp">>))<7 rJCKV ac IQ>>Q>>~4>>r'IS Itaa 8Qas Q2$4$circa naIru)4a.$<<JPLISG.VIr>>CJ4 7'JAPE LJGBK RIG RIG~Irr I-"IG UG 40 31 37 rs Gr Sl CAUSS O SCR<i~.O'I JVO CORRSCI<II-AC>IOISS OSS The.cause of the instrument air supply low pressure alarm was a diaphragm-leak in the solenoid valve which controls the instrurrent air su pl to FCV-25-8.The solenoid valve was replaced and FCV-25-8 was returned to I service.The valve is an ASCO Model 8316, 3/8 inch size, 125 VDC solenoid!valve.ar)IKR sr~us Q~,rA;QJ J,Crv<rV QG NA.I JJ us'iiiaa CJ<S 9 KRV IRAQ>o NA NA 1 r I I N.A.St=ho+pean 3 9 5ACI'v s.@ra j ASR QZG LJG I'~~G~7 3')<S Jc,<<t 1 7Y a>>rs>>r t<rLK>SKQ G5 R tl SSSK atua'J>>EE w~Q L~OL I ts 1<trasC>>t KL St<PG$4>rs L00<00 0 0IQi~zQ 7))I I 17 EZ 7~tq I LJ I(a-.<!I 3);)5 aUC<rr ir>>CG>>uti~QQ)l'N (3-'I St)30.VRC~JSS CSVLY!!!!!!!<)!;.$$)0 305-552-3802 QISCQvSRv OSSA,rrra>>

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