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| {{Adams
| | #REDIRECT [[05000269/LER-1977-031-03, /03L-01:on 771229,increase in Reactor Coolant Leakage Noted.Caused by Analog Channel 1 WR Transmitter Error Due to Steam from Blown Switch.Transmitter Recalibr. Valving Out Switch Stopped Leak]] |
| | number = ML19317E046
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| | issue date = 01/26/1978
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| | title = /03L-0:on 771229,increase in Reactor Coolant Leakage Noted.Caused by Blown Pressure Switch.Transmitter Error Corrected by Recalibr.Switch Temporarily Valved Out, Eliminating Leak
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| | author name = Wilson K
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| | author affiliation = DUKE POWER CO.
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| | addressee name =
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| | addressee affiliation = NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
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| | docket = 05000269, 05000270
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| | license number =
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| | contact person =
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| | document report number = LER-77-031-03L, LER-77-31-3L, NUDOCS 7912110824
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| | package number = ML19317E043
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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
| |
| | Title = /03L-0:on 771229,increase in Reactor Coolant Leakage Noted.Caused by Blown Pressure Switch.Transmitter Error Corrected by Recalibr.Switch Temporarily Valved Out, Eliminating Leak
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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 = 05000269
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| | LER year = 1977
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| | LER number = 31
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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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| to1211 On December 27 an increase in reactor coolant leakace was noted.
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| At 2_131 l
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| A 1 RPS channel A tripped on press / temp.
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| It was determined that a pressure g
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| I o 1. i I switch had blown.
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| Reactor shutdown was initiated but was terminated when
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| ioIsi! switch was valved out.
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| On December 29 it was noted that Channel 1 WR io is I oressure was reading high so the channel was tripped.
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| At 1545 recalibration i
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| tairlI was comolete so channel was returned to service.
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| At no time was' the ability ;
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| 2 cAuSE of scRtPT1oN ANo CoARECf1VE ACiloNS tito 1 The ES Analog Channel 1 WR pressure transmitter is located about five feet ii,i, i from and slightly below the blown pressure switch.
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| It is likely that steam I from the switch struck the transmitter thus throwing it out of calibration.
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| i,i3, I Recalibration corrected the transmitter error.
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| Temporarily valving out the i,i.i L switch has eliminated the leak. The trans=1tter was a model 56PH.
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| 79.12110 M k
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| }}
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| {{LER-Nav}}
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