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| {{Adams
| | #REDIRECT [[05000272/LER-1979-004-03, /03L-0 on 790103:Loop 4 Channel IV Was 100 Psi Too High.Caused by Steam Pressure Transmitter Being Frozen by an Outside Air Damper Directing Cold Air Onto the Sensing Lines]] |
| | number = ML19337A353
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| | issue date = 09/02/1980
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| | title = During Normal Operations, Status Alarm Panel Indicated Loop 1 Steam Pressure 100 Psi Less than Loop 4.Steam Pressure Channels Checked & Loop 4 Channel 4 Read 100 Psi High.Caused by Frozen Sensing Line
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| | author name = Kapple A
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| | author affiliation = PUBLIC SERVICE ELECTRIC & GAS CO. OF NEW JERSEY
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| | addressee name =
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| | addressee affiliation = NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
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| | docket = 05000272
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| | license number =
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| | contact person =
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| | document report number = LER-79-004-03X, LER-79-4-3X, NUDOCS 8009090589
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| | package number = ML18082B104
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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 = During Normal Operations, Status Alarm Panel Indicated Loop 1 Steam Pressure 100 Psi Less than Loop 4.Steam Pressure Channels Checked & Loop 4 Channel 4 Read 100 Psi High.Caused by Frozen Sensing Line
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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 = 05000272
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| | LER year = 1979
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| | LER number = 4
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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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| 's agponT =afg so EVENT QESCAIPTION AND *AC8 AILE CCNSECUENCES h I a i 2 f lDuring normal cperation at C845 tours, the status alarm panel indicated Loop 1 steam g
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| g ; pressure loo psi less than Incp 4.
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| A check of steam pressure channels showed normal l
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| 13(4] l readings for all except Icop 4 Channel IV which read about 100 psi high. The channel l
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| ; 9 i s t yas declared inoperable and Action No.14 fcr T/S 3.3.2.1 was implemented. The
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| t o !.s i phannel was returned to service at lo2e hours and Action No.14 was terminated.
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| l l3;7l lThis is the second occurrence of this type.
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| (78-79)
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| | |
| ==CAUSE==
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| .T CALSE CESCAIPTION AND CCARECitVE ACTICNS h l1 l3] The sensing line to the steam pressure transmitter was frczen due to an curside air l
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| 1,i,i fluct directing cold air onto the sensing lines. The space heaters for this area i
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| 1 1:1!were also de-energized. The air stream was redirected, the space heaters energized, I
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| t'I3Ilthe sensing line was blewn dcwn, and the :hannel was returned to service.
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| ti,4 i 113C137 has been ::mpleted which installed a :losable damper in the ventilation duct.
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| }}
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| {{LER-Nav}}
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