05000369/LER-1981-141-03, /03L-0:on 810816,station Meteorological Monitoring Sys Declared Inoperable When Control Room Annunciator Alarm Was Actuated.Caused by Unstable Power Supply.Power Supply Replaced & Instrument Recalibr

/03L-0:on 810816,station Meteorological Monitoring Sys Declared Inoperable When Control Room Annunciator Alarm Was Actuated.Caused by Unstable Power Supply.Power Supply Replaced & Instrument Recalibr

ML20010H447
Person / Time
Site:	McGuire
Issue date:	09/15/1981
From:	Nardoci P DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20010H442	List: 05000369/LER-1981-141, Forwards LER 81-141/03L-0.Detailed Event Analysis Encl 05000369/LER-1981-141-03, /03L-0:on 810816,station Meteorological Monitoring Sys Declared Inoperable When Control Room Annunciator Alarm Was Actuated.Caused by Unstable Power Supply.Power Supply Replaced & Instrument Recalibr
References
LER-81-141-03L, LER-81-141-3L, NUDOCS 8109240479
Download: ML20010H447 (1)

LER-1981-141, /03L-0:on 810816,station Meteorological Monitoring Sys Declared Inoperable When Control Room Annunciator Alarm Was Actuated.Caused by Unstable Power Supply.Power Supply Replaced & Instrument Recalibr

Event date:
Report date:
3691981141R03 - NRC Website

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LICENSEE EVENT REPORT EXHIBIT A CoNTAot stocc i l

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.0 EVENT oE5CAIFTION Ah;O PRoSA8LE CoNSECUENCES h a 2 I on August 16. while in Mode 2. and on Aunust 25. while in Mode 3, the Station i RTTl i Meteorolocical Monitorine System (FFR) was declared inoriera% when the control RTTI I room annunciator alarm. " Environmental System Trouble", was actuated. This l

lois]l violates T.S.3.3.3.4 which is reportable pursuant to T.S.6.9.1.13(b).

Since lotsiI the three gaseous waste releases made while the system was inoperable were i

g I monitored and were never above prohibitive radioactivity levels, the health g

i o,a i I and safety of the public were not affected.

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2 CAUSE oESCAIPTloN ANo CoAREC'flVE ACTloNS g i The problem was determined to be an unstable power supply in the Data Legger i

ggl (Meteorological Research Inc., Model 301-15-0).

The power sunply was re-I gi placed and the instrument recalibrated. The sp tem was declared operable g[ on August 26, 1981.

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