ML20062E921

/03L-0 on 781113:during Normal Oper the Containment Particulate Radioactivity Monitor Failed Low at 1110.Caused by Disconnection of Signal Cable to Monitor. Cable Connected & Monitor Returned to Svc

ML20062E921
Person / Time
Site:	Calvert Cliffs
Issue date:	12/07/1978
From:	Carroll J, Miernicki M BALTIMORE GAS & ELECTRIC CO.
To:
Shared Package
ML20062E919	List: ML20062E916 ML20062E921
References
LER-78-053-03L, LER-78-53-3L, NUDOCS 7812130194
Download: ML20062E921 (1)

Text

{{#Wiki_filter:_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ._ _. I LICENSEE EVENT REPORT CONTROL BLOCK: l l l l l l l (PLEASE PRINT oA TYPE ALL REoUIREo lNFoRMATioN) i . R IMInlClClnlll@l0101-l0101010101-l01Ol@lhl111lllll@l a 9 LICENSEE CODE 14 15 LICENSE NUV8ER 25 26 LICENSE TYPE 40 I 57 CAT 58 l@ C ON'T 101i1 [' "c' l60L }@l 01 5l 0l 0l 0l 31 Il 7)@l 11 11EVENT 1131 Tl 8 )@l ll 21REPQRT o f Tl 71 B80l@ I 8 41 68 69 OATE 74 75 DOCK ET NUMBER DATE EVENT DrSCRIPTioN AND pro 8 A8LE CoNSEcuENCES h lo # 2l l During nor=al operation the containment earticulate radioactivity monitor I lo l3; l rsiled lov at 1110. Corrective action was initiated ir: mediately and the I i l0 l4 l l monitor was returned to service at 1135. Both the contain=ent sump level l Io isl l alarm system and containment atmosphere gaseous activity =onitor remained I

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[~5"Tel I operable throughout this event. This is not a repetitive event. l f5TTI I I L' lI I l 7 s9 ** i E CODE SUSC E COMPONENT CODE SU8 OO'E $ lO191 7 8 l Bl Bl@ @@ l C l@ lI l N ' S lT l R lU l@ l El@ y @ 9 10 11 12 13 18 19 20 SEQUENTIAL OCCU R R E NCE REPORT REVISION

                                                       ,_EVENTYEAR                                  REPORT NO.                               COOE                TYPE                        NO.
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_1718l 21 22 l_i 23 10isi31 24 L-J lo 13 I I LI l-l LoJ 4 26 27 28 29 30 31 32 . TAE N AC 0 ON L NT ME HOURS S8 i FOR S. SU Lt MANUF RER lXlg[34Hjg 3J l5Zlg 3 g g 38 JJ l 0l qqq [Njg 41 , lN lg l A lg lW l1 l2 l0 lg 40 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACT1oNS h l i l o j l Signal cable to monitor was discovered disconnected with no apparent cause. l l i , i l l Cable was connected and monitor returned to service. Possible cause was I

       , y l that cable was not connected properly when maintenance was last performed                                                                                                                     l p ,3 ] l on monitor. Appropriate maintenance personnel vere instructed to ensure l

g l cable connectors lock when connecting cables on this equip =ent. I 7 8 9 80 sta  % POWER CTHER STATUS DIS RY DISCOVERY DESCRIPTION Ii l 5 I [,,EJg l 0 l 8 l 0 lgl N/A l lAlgl Operator Observation l ACT1vtTY CO TENT RELE ASEO OF RELEASE AMOUNT OF ACTIvtTY LOCATION OF RELEASE l1 ' l6' l* l Zl g l' Z lgl N/A l l N/A l PERSONNEt ExPOSt 5ES NUMBER TYPE DESCRIPTION l' 3 l '7 'l l 0l O! 0l@l Zl@l N/A l

                  *E RSoNN/L iN;u' dies NUMit E R                                  DESCRIPTION l1 lsl         l0l0l0l@l                                                               N/A                                                                                                              l 8 9                                       11       12 80 LOSS OF OR DAYAGE TO FACILITY TYPE                        DE SCRIP TION l i l 91 [ ,Zj@l                                                                       N/A                                                                                                              l 7      8 9                             10 80 OE CRIPTION 12101 1isSud hl                                                                        N/A                                                                            l      lllIIlllll llli 7      8 9                             10                                                                                                                          68    69                         80 3
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NAME oF PREPARER PHONE: 7 9 I 213 0 1 T'-{}}