ML20023C280

LER 83-025/03L-0:on 830409,reactor Bldg Fuel Pool Channel a High Radiation Alarm Activated,Causing Reactor Bldg Vent Sys to Trip.Caused by Burned Out Relay Coil.Relay Coil Replaced

ML20023C280
Person / Time
Site:	Dresden
Issue date:	05/04/1983
From:	Merritt S COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20023C275	List: ML20023C274 ML20023C280
References
LER-83-025-03L-01, LER-83-25-3L-1, NUDOCS 8305170140
Download: ML20023C280 (1)

Text

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. NoJ #pIM 366 U. S. NUCLEAR REGULATORY COMMISSION 17 77) ucENSEE EVENT REPORT CONTROL sLoco l I I  ! I I

!@ tPLEASE PRINT OR TYPE ALL REQUIRED INFORMATIONI 4

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8E' ORT O ATE dJ EVENT DESCRIPTION AND PROSA8LE CONSEQUENCES @

101:1 l During unit refueling. Reactor Buildine Fuel Pool channel "A" Hfoh undineinn I la#2l l alarm activated causing the Reactor Buildinn Vent System to trin and inninre i 10 l 41 l which initiated Standby Gas Treatment. Sa fe t y imnifentinna are minimal I 10(51 1 '

since all systems functioned as desinned. There vad no effece en nuh14c I IO is 1 l health and saferv. Thfe fe che fivee noeuvranco nf chte le f n a m e nen. Ann l 10171 I I totali I Sv5TEu CAuSE CALSE Cove  ; Atv E COCE COCE SUSCOOE COMPONENT CODE SU8COCE SUSCODE l0l91 l M ltoC l@ W@ W@ lR lE l L l A l Y l X l@ l A l@ 20W @

7 3 3 11 12 13 18 19 SEOL ENTI AL OCCURRENCE REPORT REVISION

_EVENTvfAR R EPORT NO. CODE TYPE NO.

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_ l21 8l22 3[ 23 24 26 27 28 29 30 l-l 31

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J2 h ANION CN PLANT M MOURS 22 $8 i POR 8. SUPPLi MANVPACTLRER l33Algl34 Zlg ]5g 3

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44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS

,,,,;l Relay coil 1705-105 in panel 902-40 burned out, thus tripping Reactor Building l

,, ,,,; Vent System which initiated Standby Gas Treatment. The relay coil was t

,, , , , , replaced and the system returned to normal. No further corrective action I

( l deemed necessary.

l l, 11 141 l l l 7 8 9 90 SA *bPOWER OTHER STATUS S RY DISCOVERY OESCRIPTION IiI5l 1 @ l0l0l0lgl N/A Operator Observation l lAl@l's l

ACTIVITY ColTENT 80 RELEASED ^P RELEASE AMOUNT OF ACTivtTY l lt 7

leIlZlh U gl N/A 8 9 80 ft 44 l l 45 N/A LOCATION OP RELEASE l

PERSONNEL EXPOSURES 80 Nuv8ER Ty*E OESCRl*TICN w I i I 7 l l 0 l 0 l 0 l@y@[ N/A l

>ERSONNEL NJURIES NUV9ER OESCRIPTION It 1411010101@l 7 8 9 11 12 N/A l 30 LOSS Ty*E OP OR DAMAGE TO PACILITY h CESCRIPTION v

, I r I a I [Z_j@l N/A l l 7 8 9 to 30 l

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uusJ 18, $81 N/A F 4 3 10 l

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90 5 NAME OF 3REPARep S. Merrict PHONE: (815) 942-2920 x550 0 8305170140 830504  !

PDR ADOCK 05000237 PDR I i 58