ML19308D087

RO-77-08:on 770126 During Mode 3,boron Concentration Found Diluted,Causing Reactivity Insertion During Startup.Caused by Personnel Error in Placing Unborated Mixed Bed Demineralizer on Line.Unit Tagged When Out of Svc

ML19308D087
Person / Time
Site:	Crystal River
Issue date:	02/09/1977
From:	Stewart W FLORIDA POWER CORP.
To:
Shared Package
ML19308D077	List: ML19308D076 ML19308D087
References
NUDOCS 8002270585
Download: ML19308D087 (1)

Text

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UCENSEE EVENT REPORT S CoNTRot stCCx:l Di / l 71 / I/, r71 cmass mer au. mumm mamariam 1- 8

".'*"' uCE,..E o u.ER =a '7,'"E 8 Ivi ti eI nl Pi si 7 89 14 I O ! O I - 1 0 1 01 01 01 01 - l 0 1 0 I I411Iil1111 10111 15 25 26 30 31 32 CATEGORY rYpE s 95[ 00CxET NuuSER EVENT CATE REPORT DATE O 1 CCN'T l.04 8@ W y l0 l 5 p l-l 0l 3l 0l 2l l0 l1l 2l 6l 7l 7l l0 l2 l0 l 9 ] 7J 7l 7 8 57 58 59 60 61 88 89 74 75 80 EVENtOESCREC ,.

012 l L While in Mode 3 01 e Standby) during start-up, Boron concentration was found l 7 89 80

$l to be approximately 50 ppa diluted causing a 0.57" reactivity insertion. l 7 89 80 at4 l Recovering frem trio of 4160V unit bus the "A" Fakaun and Purifiention deminerali=el-7 89 -

80

$I 7 89 k na 4,2av r .,c1, s.., ,12,.a in . ry'e.. ehucamm enr.<n ,. mined 4.%" A1the.

80 l

61 Dominera112er was immediately b y passed. -(-2738)- l 7 89  % 80 coy CoupoPdNT CoCE MAF4#ACR R VOLADON

[opj lC l Gl W l Dl El Ml Il N l Xl [N l l3 l0 l1 l5 l lNl -

7 89 10 11 12 17 43 44 4/ us CAUSE DESCRIPTION gl Operator erred in placing Morated nixed bed Demin. on line. Tagging now l

7 89 80 l employed to alert operators vi ' ch unit is to be out of service.

l

]58 9 BC

,nO) l l 7 8S 8

,. cur, utn.co o,

$1Arus 4 POWER of>ER STATUS CISCCVERY CISCCVERY DESCmp1CN

@ W l0l0l 0l l Mode 3 l l3 l l Routine Chemistry Surveillance l 7 8 9 10 12 13 44 45 48 80 o o Rh E st AucuNT OF ACTMTV LOCATCN OF REEASE 12 (M jl N/A l l l 7 8 9 10 11 44 45 80 PERSCNfdl. EXPOSURES NupeEn type oEsCasmon 13 It' I cl<'l E) l N/A l 7 89 11 1? 13 80 PERSONNEL INJURIES - -

NuweER CEscapfe" N/A

@ l^l21Cl11 12l 7 89 l j 80 l LTSITE CONSEQUENCES I 15 l N/A I l

7 89 80 l LOSS CR DAMAGE TO FAC3.!TY tveE :EsCDerTCN I ggl N/A l 7 89 10 80 gi 89 N/A 8 o 02 27 o #f ,

80 AOCITIONAL FACTCAS j l Plant was in Mode 3 OTot Standhv), Rhutdown margin remained greater than 4" AK/K, l 7 89 80 1 l Safety Rod Groups were withdrawn and cocked.

l 7 89 y 80 m ti. P. Stewart e UT /  % (813) 866-4159

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