ML19261F299
| ML19261F299 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 10/04/1974 |
| From: | Arnold R METROPOLITAN EDISON CO. |
| To: | |
| References | |
| GQL-0381, GQL-381, NUDOCS 7910250762 | |
| Download: ML19261F299 (4) | |
Text
AEC DISTRIBUTION FOR PART 50 DOCKET MATERIAL (TEMPOR ARY FORM)
CONTROL NO: 10e27 FILE.
FROM: Metropolitan Edison Co.
DATE OF DOC DATE REC'D LTR TWX RPT OTHER Reading, Pennsylvania l
10-4-74 10-11-74 xxxx
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ORIG CC OTHER SENT AEC PDR "^^^^^"
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CLASS UNCLASS PROPINFO INPUT NO CYS REC'D DOCKET NO:
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50-289 DESCRIPTION:
ENCLOSURES:
Ltr Reportin; Abnormal Environmental Occurrence #74-11 on 9-28-7.+ concerning M.Qgr 77'% c-J
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Failure to Monitor the release of iodine from Auxiliary and Fuel Handling Building..,
DO NOT REMOVE PLANT NAMEthree Mile Island Station #1 FOR ACTION /lNFORMATION 10-19-74 JGB BUTLER (L)
SCHWENCER (L) ZIEMANN (L)
REGAN (E)
W' Copies W/ Copies W/ Copies W/$opies CLARK (L)
STO LZ (L)
DICKER (E)
LEAR (L)
W/ Copies W/ Copies W/ Copies W/ Copies PARR (L)
VASSALLO (L)
KNIGHTON (E)
W/ Copies W/ Copies W/ Copies W/ Copies KNIEL (L)
PURPLE (L)
YOUNGBLOOD (E)
W/ Copies W/ Copies W/ Copies W/ Copies INT,ERNAL DISTRIBUTION EmC TECH REVIEW /6ENTON LIC ASST A/T IN D 4EC POR
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SA LTZM AN AlUNTZING/ STAFF MACCARY l$ASTNER GEARIN (L)
- 8. HURT CASE KNIGHT v$ALLARD GOULBOURNE (L)
GIAMBUSSO PAWLICKl SPANG LE R KREUTZER (E)
PLANS BOYD SHAO LEE (L)
MCDONALD MOORE (L) (BWR)
CHAPMAN DEYOUNG (L) (PWR)
HOUSTON A1ULLER
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NOVAK DICKER SERVICE (L)
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LOCAL PDR Harrisbur,Pa AN 6 L 1 - PDR SAN /LA/NY TIC (ABERNATHY) 1)(2)(10) - N ATIONAL LABS 1 - NSIC (BUCHANAN) 1 - ASLBP(E/W Bldg, Rm 529) 1 - BROOKHAVEN NAT LAB 1 - ASLB 1 - W. PENNINGTON, Rm E 201 GT 1 - G. ULRIKSON, ORN L 1 - Newton Anderson 1 - B&M SWINEBROAD, Rm E 201 GT 1 - AGMED (RUTH GUSSMAN) 16 - ACRS HOLDING 1 - CONSU LTANTS Rm B-127 GT N EWM ARK /B LUME/AG BABI AN 1 - R. D. MUELLER, Rm E-201 GT
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Mr. J. P. O'Reilly, Director Regulatcry Cperations - Regien 1 U.S. Atcmic Energy Cc= mission
.4 631 Park Avenue King of Prussia, PA 19hC6
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Dear Mr. O'Reilly:
Operating License EPR-50 Docket No. 50-289 In accordance with the Enviren= ental Technical Specifications for cur Three Mile Island Nuclear Station, Unit 1, we are reporting the following Enviren= ental Incident:
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(1) Reporting Nu=ber:
E.I. 50-289/7h-11
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w (2a) Report Date: Cetober h, 137h Lf.-
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(2b) Occurrence Date: September 28, 197h
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(3) Facility: Three Mile Island Nuclear Statien, Unit 1
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(h) Identificaticn of Incident:
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Failure to monitor the release of icdine frcm the Auxiliary and Fuel Handling Building due to the removal frc= service of the icdine channel of Radiaticn Mcnitor A-8, which is a violation of the monitoring requirenents of the Enviren= ental Technical Specificaticns, paragraph 2.3.2.A.2.
(5) Conditiens Prior to Cecurrence:
The reacter was at steady state pcuer with major plant parameters as follevs:
}khk Power:
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Elec.: 855 lG (Gross) 1082:
6 RC Flow: 139 x 10 lb/hr RC Pressure:
2163 psig RC Temp.: 579cy PRZE level:
2h3 in PEZ3 Temp.: 6L7 F (6) Description of Incident:
At 2130 hcurs on Septe=ber 28, 197k, the iodine channel cf Radiatica Monitor A8 was re=oved frc= service fer calibration while a release was being =ade frc= a vaste gas tank. The release was ccepleted before the channel was returned to service.
(7) Designation of Apparent Cause of Incident:
It is believed that the incident in question was caused primarily by the fallare cf Plant Maintenance eersennel to follow approved procedures, in that they re=oved a radiation monitor channel frc=
service withcut first infor=ing the Shift Superviscr.
(8) Analysis of Incident:
It is believed that the failure to =cnitor the iodine release rate did not cause any environ = ental damage and did not represent a threat to either the health or safety of the public, in that the contents of the vaste gas tank were analy.:ed prior to their release, no iodine activity was detected, and the release rate did not exceed the Technical Specification limits.
(9) Corrective Action:
The folleving short-ter: corrective acticns were taken:
a.
The importance cf following all applicable precedures was impressed upon the Instrument Fore =an and instrument technicians.
b.
A Superintendent's Operating Memn Las sent to all apprcpriate plant perscnnel directing thea to infor= the appropriate foreman of any propcsed action on a safety related syste= requested by a vendor representative and to inform the Shift Supervisor of any preposed work to be done on a safety related system.
At a meeting held t=nediately after the incident was repcrted, the Plant Operations Eeview Cc==ittee (PCEC) reviewed and gave its approval of these acticns.
In addition, they recc== ended to the Station Superintendent that the folleving 1cne-ter= ccrrective actions be taken:
a.
Review the procedure which controls the removal of radiation
=cnitors frc= service and add any furthe. cautions which =ay be required.
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Investigate the feasibility of adding key-lcek switches to the defeat circuit for the radiation scnitor interlocks.
The Station Superintendent concurred with these recc= endations and has taken the necessary steps to incure their implementation.
(10) Failure Data:
Not applicable.
Sincerely, If l
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- h. C. Arnold Vice President RCA/JFV/cas File:
20.1.1/7.7.3.11.1 cc: Director Directorate of Licensing U.S. Atomic Energy Ccnmission Washington, D.C.
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