ML17252B017

Letter Confirming a 10/27/1972 Conversation Confirming No. 1 Off Gas Monitor Being Out of Calibration on 10/20/1972 - Dresden Unit 3

ML17252B017
Person / Time
Site:	Dresden
Issue date:	10/27/1972
From:	Worden W Commonwealth Edison Co
To:	Bloch E US Atomic Energy Commission (AEC)
References
Download: ML17252B017 (1)

Text

R B MSG NR . 664 Regulatory USAEC HQS GTWN USAEC HQS GTWN TLXA299 WAF213C2014>Cl-038424D299-~03>PD 10/27/72 1547 res SOTSCTN M[TN ZCZCSUSPECTED DUPLICATE 1-024222C298002 WAC142 res IPMVEIE MVN ZCZC 00052 PD TDVE MORRIS ILL 150*10~24 llOP CDT PMS MR EDWARD J BLOCH.ACTING DIRECTOR BIRECTORETT OF LICENSING TLX US AtOMIC ENERGY COMMISSION WASHDC 20545 SUBJECT DPR-25 DESDEN NUCLEAR.POW-ER STATION UNIT 3 THIS WILL CONFIRM A.CONVERSATION WITH MR H DANCE OF YOUR OFFICE AT*. 1100 HOURS THIS DATE CONCERNING NO. 1 OFF GAS' MONITOR BEING OUT OF CALIBRATION ON *10-20-72 THE ~NSTRUMENT MECHANICS WHILE MAKING A MONTHLY SURVALANCE CALIBRATION ON UNIT 3 OFF. GAS MONITOR FOUND THE TRIP .SETTING ON ONE MONITOR GREATER THAN-SPECIFIED IN THE TECHNICAL SPECIFICATIONS SECTIONS 3.2.D.A OF THE

~*TECHNICAL SPECIFICATION STATE THAT THE TRIP SETTING FOR MONITOR SHALL BE SET AT A VALUE NOT TO EXCEED TH~ EQUIVILANT OF STACK RELEASE LIMIT SPECIFIED IN SPECIFICATION 3.8 THE STACK RELEASE LIMIT UNDER OPERATING'CONDITIONS AT THE TI~E WAS 0.7 CI)2ND THE TRIP SETtING ON-NO *. 1 .OFF GAS MONITOR WAS FOUND TO BE l.OCI/2ND THESE MONITORS DO NOT HAVE A HISTORY OF PREVIOUS FAILURES T~E STATION WILL REVIEW THE PRESENT TRIP SETTING TO DETERMINE OF,A LOWER LIMIT AN BE USED

.1 ~. P. WORDEN.* -

SUPT DRESD~N NUCLEAR POWE~ STATION COL OPR-_25 3 1100 1 10~20.:..72 3 3.2.D_.l 3.8 0.7 CI/2ND 1.0CI/2ND 315A EDT

USAEC HQS GTWN DOCKETED

' USAEC

' \