ML18110A615

LER 1976-005-00 for St. Lucie Unit 1, Two Inoperable Containment Area Radiation Monitoring Instrumentation Channels

ML18110A615
Person / Time
Site:	Saint Lucie
Issue date:	04/09/1976
From:	Schmidt A D Florida Power & Light Co
To:	Moseley N C NRC/IE, NRC/RGN-II
References
PRN-LI-76-73 LER 1976-005-00
Download: ML18110A615 (5)

Text

NRC FORM 195 I2-76)NRC DISTRIBUTION FQR P RT 50 DOCKET MATERIAL DOCKET NUMBER 50-335 FILE NUMBER INCIDENT REPORT H.C.Moseley'lordia Power 5 Light Co.Miami, Flordaa A.D.Schmidt OATE OF DOCUMENT 4-9-76 OATE RECEIVED 4-22-76 OLETTER QORIGINAL IDCOPV 0 NOTOR IZ E O CfQNC L7hSSI F I E 0 PROP INPUT FORM NUMBER OF COPIES RECEIVED OESCRIPTION Ltr.trans the following......

30 ENCLOSURE Licensee Event Report (R.p.g 7p-5)~pn 3 ip 7p Concerning Containment, Area Radiation Monitor-ing Instr'otaentationotwo inoperable channels.-..;

(30 Carbon Cys.Received).-PLAN NAm: 'ACKNOWLEDGED

.DO NOT REMOVE'OTE: XF PERSONNEL EXPOSURE XS INVOLVED SEND DIRECTLY TO KREGER/J, COLLINS SAFETY BRANCH C1IIEF.: W 3 CYS FOR ACTION LIC~ASST: W/CYS ACRS CYS FOR ACTION/INFORMATION niemann lggs ENT TO LA ENVIRO SAB 4-22-E FILE NRC PDR&E 2 INTERNAL D ISTRI BUTION SCHROEDER/XPPOLXTO NOVAK CHECK lIES S MEN E TEDE CO I"SCCA BAER SHAD OLLHER BUN 1 KRE E 0 N LPDR TIC NSIC EXTERNAL DISTRIBUTION CONTROL NUMBER~3996 NRC FORM 155 I2 70) ng II II N f BOX OI3100, MIAMI, FLORIDA 33101 FLORIDA POWER 5 LIGHT COViPA'IY April 9,.1976 P-LI-76.-73 Mr.Norman C.Moseley, Director, Region II Office of Inspection and Enforcement U.S.Nuclear Regulatory Commission "230 Peachtree Street, N.W;, Suite 818'tlanta, Georgia 30303,

Dear Mr..Moseley:

/Cp>DCXTIg>((Nrem'szsv M>>II~Rdz~b REPORTABLE OCCURRENCE 335-76-5 ST.LUCIE UNIT 1 DATE OF OCCURRENCE:

MARCH 10'976 CONTAINMENT AREA RADIATION MONXTORING INSTRUMENTATION-TWO INOPERABLE CHANNELS 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,~~A.D.Schmidt.Vice President Power Resourc s MAS/cpc Attachment cco Jack R.Newman, Esauire Director, Office of Inspection and Enforcement (30)Director, Office of Management Information and Program Cont ol (3),UCI OlhllOl Ill PlCI AOI&h CONTROL BLOCK: I'UCENSEE NAME LS LS 1 too~j F 0.7 89 14 15 ICENSEE EVENT REPORT~(PLEASE PRINT AU.REQUIREO INFORMATION) 6 UCENSE EVENT UCENSE NUMBER TYPE TYPE 0-0 0 0 0 0-0 0 4 1 1 1 1~03 25 26 30 31 32 REPORT AEPORT CATEOO>>TYP~E SOURCE~D1OONT~~g~Z, 0 7 8 57 58 59 60 61.COCKET NUMBEA~EVENT OATS 5 0-0 3 3 5 0 3 1 0 7 6 68 69 74 AEPOAT OATE 040976 75 EVENT OESCRIPTION Qog Durincr initial core loadin , ower was lost to the Channel C containment.

7 8 9 60[ODG]area radiation monitorin instrumentation.

At the time ESFAS Channel A 7 89 60~04 was out of service for im lementation of a lant chan e/modification.

7 8 9 80 7 8 9~80 Jog 89 SYSTEM CAUSE CODE CODE COMPONENT COOt IOD7j~BA~A 3 N 3 T R U 7 8 9 10 11 12 17 CAUSE DESCRIPTION This occurrence was caused PRIMAE COMPONENT SUPPUEA COMPONENT MAhUFACTUAEA V 1 1 5 44 47 b a loose electrical N connection.

The 80 7 8 9 toOI electrical connection was loose because of im roper landing of a 80 7 8 9 80 ,Qg termination.

Corrective action was to land the termination correctly.

OTIIEA STATUS NA AMOUNT OF ACTIVITY NA 7 89 FACTORY STA'TUS%POWER Q~g~R~oo o 7 8 9 10 12 13 FORM OF ACTIVITY CONTENT RELEASEO OF AELEASE Hl u 7 8 9 10 11 PERSONNEL EXPOSURES NUMBER TYPE OESCRIPTION

~>>~oo Lzg 7 8 9 11 12 13 PERSONNEL INJURIES NUMBER OESC IPTION EQ4~~7 89 11 12 PROBABLZ CONSEQUENCES METI400 OF OISCOVEAY a 44 45 46 44 45 NA NA OISCOVEAY OESCRIPTION NA LOCATION OF AELEASE NA 80 80 80 80 80 7 8 9 LOSS OR OAMAGE TO FACILITY TYPE OESCRIPTION z 7 89 10 PUBLICITY 7 8 9 NA NA 80 80~80 AOOITIONAL FACTORS'g See Pa e Two for continuation of Event Descri tion and Cause 7 89 t1i9]Description.

7 89 NAME M.A.Scho man 80 80 CFO II4I~4eT REPORTABLE OCCURRENCE 335-76-5 LICENSEE EVENT REPORT PAGE TNO EVENT DESCRIPTION (Continued) were not available.

This is contrary to Technical Specification 3.3.3.1.The immediate action was to attempt to restore power to the Channel C instrumentation and to initiate the followup action required by Specification 3.3.3.1.Power was restored quickly, so it was not necessary to complete the followup action.This, was the first occurrence of this type.(335-76-5).

CAUSE DESCRIPTION (Continued)

Followup.action was to check other circuits for loose terminations.

No other loose connections were found.