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| {{Adams
| | #REDIRECT [[05000368/LER-1980-064-03, High Containment Pressure Trip Received from PPS a & D.On 801203,steam Generator B Low Level Trip Circuit for PPS a Was Inoperable.Caused by Bistable Comparator Card Power Supply Failures]] |
| | number = ML19344F464
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| | issue date = 09/08/1980
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| | title = /03L-0:on 800810,during Mode 1 Operation,Plant Protective Sys Channels a & D Malfunctioned.Caused by Power Supply Failure.Channels Repaired & Declared Operable Per Tech Specs
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| | author name = Shively C
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| | author affiliation = ARKANSAS POWER & LIGHT CO.
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| | addressee name =
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| | addressee affiliation = NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
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| | docket = 05000368
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| | license number =
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| | contact person =
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| | document report number = LER-80-064-03L, LER-80-64-3L, NUDOCS 8009150296
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| | package number = ML19344F460
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| | document type = LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT
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| | page count = 1
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| }}
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| {{LER
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| | Title = /03L-0:on 800810,during Mode 1 Operation,Plant Protective Sys Channels a & D Malfunctioned.Caused by Power Supply Failure.Channels Repaired & Declared Operable Per Tech Specs
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| | Plant =
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| | Reporting criterion =
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| | Power level =
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| | Mode =
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| | Docket = 05000368
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| | LER year = 1980
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| | LER number = 64
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| | LER revision = 3
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| | Event date =
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| | Report date =
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| | ENS =
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| | abstract =
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| }}
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| | |
| =text=
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| {{#Wiki_filter:~
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| L,* -
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| NRC FORM 366 U. S. NUCLE AR REGULATORY COMMISSION 17 771 LICENSEE EVENT REPORT EXHIBIT A CONTROL 8LOCec: l l l l l l lh (PLEASE PRINT OR TYPE ALL REQUIREO INFORMATIONI
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| DOCEET hum 8ER 68 63 EVENT DATE 75 HF, ORT DArE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Oio 1o: 211 During Mode 1 operation, a high containment pressure trip was received oni e i PPS Channel "A".
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| The remainina channels remained operable with the i
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| io u iireactor trip logic in a 2 out of 3 trip logic.
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| Later the same day, a l
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| ITTTI I similar trip signal was received on PPS Channel "D" from the Steam i
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| ic a i i Generator "B" low pressure circuit.
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| The remaining channels remained i
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| f o l > l Looerable.
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| Similar to LER's 50-368/79-055, 80-028 & 80-033.
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| Reportable t
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| I c 91 ! per T.S. 6.919.b.
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| A CAUSE DESCR.PTION AND CORRECrivE ACTIONS t i lo i l lnvestication revealed the PPS "A" failure was cue to a power supply
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| ~ t m ifailure on bistable comparator card #13.
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| The PPS "D" failure was due i
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| i,i,i i to a power supply failure on bistable comparator card #12.
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| Channels i
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| i,13 twere repaired and declared operable meeting requirements of T.S. Table i,nii 3.3-1 Action Statement 2a.
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| Failure inve.stigation has '.2een referred to iga,nufacturer and. a proposea coolgca,t,1,on.1s being preparea.
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| {{LER-Nav}}
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