05000272/LER-1982-083, Supplemental LER 82-083/03X-1:on 821102,control Room Operator Observed Temp Recorder for Air temp-delta T Channels Not Printing.Caused by Failure of Pinion Gear on Chart Drive Motor.Motor Replaced

Supplemental LER 82-083/03X-1:on 821102,control Room Operator Observed Temp Recorder for Air temp-delta T Channels Not Printing.Caused by Failure of Pinion Gear on Chart Drive Motor.Motor Replaced

ML20072G414
Person / Time
Site:	Salem
Issue date:	06/01/1983
From:	Frahm R, Zupko J Public Service Enterprise Group
To:	Allan J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
LER-82-083-03X-01, LER-82-83-3X-1, NUDOCS 8306280488
Download: ML20072G414 (4)

LER-2082-083, Supplemental LER 82-083/03X-1:on 821102,control Room Operator Observed Temp Recorder for Air temp-delta T Channels Not Printing.Caused by Failure of Pinion Gear on Chart Drive Motor.Motor Replaced

Event date:
Report date:
2722082083R00 - NRC Website

text

CRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION (7 77)

LICENSEE EVENT REPORT QONTROL BLOCX: l 1

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,g,3, g channels were restored to operation within the 7 day time period specified in the l lOl6l l action statement. Indication was available locally at the meteorological tower and atl ,

yag7; [the Wilmington Airport Station. The event involved operation in a degraded mode in l

[ O la l laccordance with Technical Specification 6.9.1.9.b. l 7 8 9 60 0E CODE S BC DE COMPONENT CODE SUSC dE S E g

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43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l 1 l O l l The inoperability of the chart recorder was due to the failure of the pinion gear on l 3 i lthe chart drive motor. No previous failure of this type were noted. The motor was I

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y,;7, l replaced, the channels were satisfactorily tested, and the action statement was l l terminated. l 1 4 l  !

7 8 9 80 ST S  % POWE R OTHER ST ATUS 15 O Y DISCOVERY DESCRIPTION 1 5

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' PERSONNEL INJURIES NUMBER DESCRIPTION 7

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LOSS OF OR DAMAGE TO FACILITY j TYPE 1 9 (_Z_j@l DESCRIPTION N/A

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O PSEG Public Service Electric and Gas Company P.O. Box E Hancocks Bridge, New Jersey 08038 Salem Generating Station June 6, 1983 Mr. J. Allan Acting Regional Administrator USNRC Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406

Dear Mr. Allan:

LICENSE NO. DPR-70 DOCKET NO. 50-272 REPORTABLE OCCURRENCE 82-083/03X-1 SUPPLEMENTAL REPORT Pursuant to the requirements of Salem Generating Station Unit No. 1 Technical Specifications, Secti6n 6.9.1.9.b, we are submitting supplemental Licensee Event Report for Reportable Occurrence 82-083/03X-1.

Sincerely yours, J. M. Zupko, Jr.

General Manager -

Salem Operations .

RF:klshMh CC: Distribution a

d The Energy People 96 2169 GOV) 1181

. o Report Number: 82-083/03X-1 Report Date: 06-01-83 Occurrence Date: 11-02-82 FLcility: Salem Generating Station Unit 1 Public Service Electric & Gas Company Hancock's Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:

Meterological Monitoring Instrumentation - Air Temperature-Delta T -

Inoperable.

This report was initiated by Incident Report 82-407.

CONDITIONS PRIOR TO OCCURRENCE:

Unit 1 - Mode 6 - Rx Power 0 % - Unit Load 0 MWe.

Unit 2 - Mode 1 - Rx Power 82 % - Unit Load 910 MWe.

DESCRIPTION OF OCCURRENCE:

At 0115 hours0.00133 days <br />0.0319 hours <br />1.901455e-4 weeks <br />4.37575e-5 months <br />, November 2, 1982, during routine operation, the Control l

Room Operator observed that the temperature recorder for both meterological instrumentation air temperature-delta T channels was not operating. The channels were declared inoperable and Technical Specification Action Statement 3.3.3.4a was entered. The chart recorder was subsequently repaired, and the instruments were tested satisfactorily. The air temperature-delta T channels were declared operable at 1432 hours0.0166 days <br />0.398 hours <br />0.00237 weeks <br />5.44876e-4 months <br />, November 2, 1982, and Action Statement 3.3.3.4a was terminated.

APPARENT CAUSE OF OCCUBRENCE:

i l Investigation of the problem revealed that the pinion gear on the chart drive motor had failed. No previous failures of this type were noted, and the problem was assumed to be of an isolated nature.

ANALYSIS OF OCCURRENCE:

The operability of the meteorological instrumentation ensures that sufficient meterological data is available for estimating potential radiation doses to the public resulting from the routine or accidental release of radioactive material to the atmosphere. This capability is j required to evaluate the need for initiating protective measures to protect the health and safety of the public.

Action Statement 3.3.3.4a requires:

i With one or more of the required meterological monitoring l channels inoperable for more than 7 days, prepare and submit a l

Special Report to the Commission pursuant to Specification 6.9.2 within the next 10 days outlining the cause of the malfunction and the plans for restoring the channel (s) to operable status.

i l

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. .. o LER 8,2-083/03X-1 ANALYSIS OF OCCURRENCE: (cont'd)

The 7 day time limit required by the limiting condition for operation insures adequate meteorological monitoring capability remains available. As noted, the channels were returned to an operable status within the specified time period. During the period the Control Room chart recorder was inoperable, indication of air teperature-delta T was also available locally at the meterological tower.

Finally, aata from Salem station has been correlated with that of the Wilmington Airport weather station. The correlation allows estimation of weather conditions at Salem station from the airport instruments in the event of the failure or inaccesibility of station meterological instrumentation. The event therefore involved no risk to the health

-or safety of the public. The occurrence constituted operation in a degraded mode permitted by a limiting condition for operation and is reportable in accordance with Technical Specification 6.9.1.9b.

CORRECTIVE ACTION:

The-failed chart drive motor was replaced, and as noted, the air temperature-delta T channels were returned to an operable status. No further action was deemed necessary in view of the nature of the problem.

FAILURE DATA:

Leeds and Northrup Co.

Chart Drive Motor P/N 29-2793 Prepared By R. Frahm General Manager -

SORC Meeting No.83-074 l

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