05000271/LER-1981-006-03, ATWS Recirculation Pump Trip High Pressure Trip Points from PT-2-3-56Bm,56Cm & 56Dm Were Thought to Trip High.Investigation Disclosed Conversion Error.Instruments Were within Range.Rept Unnecessary: Difference between revisions

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{{Adams
#REDIRECT [[05000271/LER-1981-006-03, /03L-0:on 810127,ATWS/recirculation Pump Trip High Pressure Trip Points from PT-2-3-56Bm,56Cm & 56Dm Tripped Above Tech Spec Level During Surveillance Testing Per Operation Procedure 4342.Caused by Instrument Drift]]
| number = ML20003G209
| issue date = 04/21/1981
| title = ATWS Recirculation Pump Trip High Pressure Trip Points from PT-2-3-56Bm,56Cm & 56Dm Were Thought to Trip High.Investigation Disclosed Conversion Error.Instruments Were within Range.Rept Unnecessary
| author name = Murphy W
| author affiliation = VERMONT YANKEE NUCLEAR POWER CORP.
| addressee name =
| addressee affiliation = NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
| docket = 05000271
| license number =
| contact person =
| document report number = LER-81-006-03L, LER-81-6-3L, NUDOCS 8104280475
| package number = ML20003G208
| document type = LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT
| page count = 1
}}
{{LER
| Title = ATWS Recirculation Pump Trip High Pressure Trip Points from PT-2-3-56Bm,56Cm & 56Dm Were Thought to Trip High.Investigation Disclosed Conversion Error.Instruments Were within Range.Rept Unnecessary
| Plant =
| Reporting criterion =
| Power level =
| Mode =
| Docket = 05000271
| LER year = 1981
| LER number = 6
| LER revision = 3
| Event date =
| Report date =
| ENS =
| abstract =
}}
 
=text=
{{#Wiki_filter:[
NRC FC:M :,64 U. S. NUCLEAR REGULATO*.Y COMMISSION J.")
UPDATE REPORT - PREVIOUS REPORT DATE 022581
/ \\
LICENSEE EVENT REPORT LER 81-06/3L
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6 60 61 OOCxgT N4MOE4 64 69 EV ENT QATE 74 75 AEPCRT OATE 80 EVENT CESCRIPTION AND #RCS A8LE CONSECUENCES h lol2l l During normal operation while performing surveillance testing per 0.P. 4342 the I
g l ATUS/RPT high pressure trip points ' rom PT-2-3-56Bm, 56Cm, & 56Dm were thought to l
lojalltrip 1 to 2 psi higher than allou d in Tech. Spec. Table 3.2.1.
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==CAUSE==
COMP VALvt CCCE CCCE SUSC00E COMPCNENT COCE
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l i i o i I Further review of this incident has disclosed that there was an error in convertine !
LLLLJ l the -4114,mn current reasured in the *est to an een4vnlent oressura.
Docn i cni n e d e I i,#2l l the pressure disclosed that all the instruments were within the allowable pressure I
li13l lrance and therefore, should not have been reported. The procedure has been changed ]
l i l a 1 i to provide the correct data.
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% POvvER OTHER STATUS 015 0 RY DISCOVERY CESCRIPT!QN l1 l 5 l l E l@ l 1 l 0 l 0 l@l NA l
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ACTIVITY CO TENT li IeI W @ aELEisEW@l attEAsto -
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$ 3
'G Warren P. Murphy
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NAME Cp maEPARER 810428om5
}}
 
{{LER-Nav}}

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