05000029/LER-1977-007-03, /03L-0:on 770204,accident-emergency High Level Radiation Monitor Failed to Pass Routine Operational Test. Caused by Test Source Lamp Failure to Actuate Alarm.Source Lamp Control Voltage Adjusted

/03L-0:on 770204,accident-emergency High Level Radiation Monitor Failed to Pass Routine Operational Test. Caused by Test Source Lamp Failure to Actuate Alarm.Source Lamp Control Voltage Adjusted

ML19345A547
Person / Time
Site:	Yankee Rowe
Issue date:	03/04/1977
From:	Boutwell R YANKEE ATOMIC ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19345A546	List: 05000029/LER-1977-007, Forwards LER 77-007/03L-0 05000029/LER-1977-007-03, /03L-0:on 770204,accident-emergency High Level Radiation Monitor Failed to Pass Routine Operational Test. Caused by Test Source Lamp Failure to Actuate Alarm.Source Lamp Control Voltage Adjusted
References
LER-77-007-03L, LER-77-7-3L, NUDOCS 8011240162
Download: ML19345A547 (2)

LER-1977-007, /03L-0:on 770204,accident-emergency High Level Radiation Monitor Failed to Pass Routine Operational Test. Caused by Test Source Lamp Failure to Actuate Alarm.Source Lamp Control Voltage Adjusted

Event date:
Report date:
0291977007R03 - NRC Website

text

-LICENSEE EV5lCREPORT (

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e A E LCENSE NUMBER Y

VPE lM l A lYl Kl Rl 1l l0 j 0 l-D l0 l0 l0 l0 l-l 0 l 0 l l 4 l 1 l 1l 1l1 l l0 l3 l 01 7 89 14 15 25 26 30 31 32 TYv sNCE CATEGORY DOCKET NUVBER EVENT OATE REPORT DATE D 1 CONT l l

l [L_j [L_j l0 l 5 l 0 l-1010l 2l 9l l 0 l 2 l 0 l 4 l 7 l 71 l0 l310 l 417 l 7l 7 8 57 58 SS 60 61 68 69 74 75 80 EVENT DESCA:PTION

@ l During nomal operation the Accident-F=ergency High Level Radiation Monitor Failed to l 7 89 80

@ l pass the routine operational test.

The instrument was capable of detectine radiation l 7 89 80

$ lns d winned a minn 7 89

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this event.

The fniinre was in the test circuitrv only.

This l

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@ l event is non-repetitive. The test source lanp voltage was adjusted.

(LER 77-07/03L) l 7 89 80 R2 1 1

7 89 rwE 80 NE CIDE COMPCNENT CODE VOLATON

@ l Bl Al (J_j lIl Nl Sl TIR lUl [Oj l NI 3l 0l5 l W

7 89 10 11 12 17 43 44 47 48 CAUSE DESCA:PTION l A Nuclear Measurement Corporation Model GA-2T monitor, test source lamp failed to l

a 7 89 80 a9 l actuate the alam.

The lamp's illumination was low; thus, not producing a test l

7 89 80 M l sienal of sufficient strength to actuate the alam.

(Cont. - Additional Factors) l 7 89 80 si

% POW ER OTHER STATUS O'SCOVERY DSCOVERY DESCWPTCN [Ej l 0l 9l6 l l M

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1 7 8 9

10 12 13 44 45 46 80 EE EO O

E SE AMOUNT OF ACTMTY LOCATCN OF RELEASE lia LI_I LzJ l

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10 11 44 45 80

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PERSONNEL EXPJSURES NUVPER TT PE DESCft PTON l

1n lo 10 l o l [LJ l n I

7 89 11 12 13 80 PERSONNEL INJUR.ES N W BER CISC A PI'ON l010 l 0 )

l M 1

l 7 89 11 12 80 OFFstTE CONSEQUENCES

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i 7 89 80 LOSS OR OAMAGE TO FACIUTY TYPE DESCR4pTCN Ql NA l

1 1

7 89 10 80 3011240 M 1

l 7 89 80 ADDITIONAL FACTOPS M l(Continued from Cause Description) The test source lamp's control voltage was l

7 89 80 adjusted; test results satisfactory.

7 89 80 C

NAME:

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v.s. NUCLE AR REGUL ATORY COM*"tSION DOC;tE T NUMGE R 42 7:t

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oATE or occVMENT TO Yankee Atomic Electric Company 3/4/77 Mr. J. P. O,Reilly Rowe, Mass.

oATE REcE vEo Mr. Herbert A. Autio 3/8/77 N ETTER ONoToRizEo Prop INPUT FORM NUMBER OF COPIES RECEtvED OoRiciNAL

- KsNcLAS$1FIE D One signed copy Jc o Y

DESCRIPTION

E N CLOSU R E Ltr. trans the following:

Licensee Event' Report (R0 50-29/77-07/03L) on 2/4/77 concerning Accident-Emergency High Level Radiation Monitor Test Circuit Failure..

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Yankee Rowe NOTE:

IF PERSONNEL EXPOSURE IS INVOLVED SEND DIRECTLY TO KREGER/J. COLLINS

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