05000327/LER-1981-020-03, /03L-0:on 810207,radiation Monitor for Exhaust Path 2-R-90-100 Found Inoperable W/Unit in Mode 5 & ABGTS Train B Fan Discharging Through Shield Bldg Exhaust Vent. Caused by Mod to 480-volt Shutdown Board on 810206: Difference between revisions

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{{Adams
#REDIRECT [[05000327/LER-1981-020-03, /03X-1:on 810207,w/unit in Mode 5 & Auxiliary Bldg Gas Treatment Sys Train B Fan Discharging Through Shield Bldg Exhaust Vent,Radiation Monitor for Exhaust Path 2-RM-90-100 Discovered Inoperable.Cause Not Stated]]
| number = ML20008E896
| issue date = 03/06/1981
| title = /03L-0:on 810207,radiation Monitor for Exhaust Path 2-R-90-100 Found Inoperable W/Unit in Mode 5 & ABGTS Train B Fan Discharging Through Shield Bldg Exhaust Vent. Caused by Mod to 480-volt Shutdown Board on 810206
| author name = Mcgriff J, Wilkey A
| author affiliation = TENNESSEE VALLEY AUTHORITY
| addressee name =
| addressee affiliation = NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
| docket = 05000327
| license number =
| contact person =
| document report number = LER-81-020-03L, LER-81-20-3L, NUDOCS 8103100477
| package number = ML20008E895
| document type = LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT
| page count = 1
}}
{{LER
| Title = /03L-0:on 810207,radiation Monitor for Exhaust Path 2-R-90-100 Found Inoperable W/Unit in Mode 5 & ABGTS Train B Fan Discharging Through Shield Bldg Exhaust Vent. Caused by Mod to 480-volt Shutdown Board on 810206
| Plant =
| Reporting criterion =
| Power level =
| Mode =
| Docket = 05000327
| LER year = 1981
| LER number = 20
| LER revision = 3
| Event date =
| Report date =
| ENS =
| abstract =
}}
 
=text=
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' EVENT DESCRtPTION AND PROB ABLE CONSECUENCES h l o l 2 l l With unit in rode 5 and the AEGTS train B fan discharging through the shield building p g l exhaust vent, an operator observed that the radiatio".' monitor for that exhaust path
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iog.; l (2-R-9.0-100) was in'perable. The plant immediately implemented action statements l
o lo13j l 42 and 44 of LCO 3.3.3.10, and initial sa:cples indicated no iodine or particulate l release and les's than 10% of the allowable release for noble gase's'.
There was no lc }6 l [o y [ effect on public health or safety. No previous occurrences.
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ii4ii I the shutdown boards at 1330 CST on 2-6-81. operations failed to note that 2-R-90-100 Iil2l l would be affected. Procedures used to de-energize vital boards will be revised to li#3l l specify the safety related equipment' supplied by the boards.
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ast Asto er nettan l Shield buildine exhaust vent.
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Name of Preparer 3.M.McCrif f / A.M.Wilkev Phene (615) 842-8317 _
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}}
 
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