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| {{Adams
| | #REDIRECT [[05000267/LER-1978-005, Forwards LER 78-005/03X-2]] |
| | number = ML19309A510
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| | issue date = 03/18/1980
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| | title = Supplemental LER 78-005/03X-3:on 780111,operations Personnel Observed That Malfunctions in Circulator Speed Measurement Resulted in Loss of High Speed Signals.Caused by Circuit Unbalance in Connectors
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| | author name = Gahm J
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| | author affiliation = PUBLIC SERVICE CO. OF COLORADO
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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 = 05000267
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| | license number =
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| | contact person =
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| | document report number = LER-78-005-03X, LER-78-5-3X, NUDOCS 8003310378
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| | package number = ML19309A506
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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 = Supplemental LER 78-005/03X-3:on 780111,operations Personnel Observed That Malfunctions in Circulator Speed Measurement Resulted in Loss of High Speed Signals.Caused by Circuit Unbalance in Connectors
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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 = 05000267
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| | LER year = 1978
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| | LER number = 5
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| | LER revision = 0
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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:NRC FCRM 3M U. S. NUCLEAR REGULATORY COMMISSION
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| * (7 77).
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| LICENSEE EVENT REPORT CCNTROL BLOCK: l l
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| l l
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| l l Ih (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)
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| U 1
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| 6
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| l@
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| 7 8 9 LICENSEf CODE 14 LICENSE NUMBER 25 26 LICENSE TYPE Jo 57 CAT $8 CON'T l0lil Qu'RC ! L hl 0l 5 l 0 l 0 l 012 l 6 l 7 hl 0 l 1 l 1 l 1 l 7 l g ]@l0 l3 l1 l 8 l 8 l0 l@
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| 7 8
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| 60 61 DOCK ET NUMBER 68 69 EVENT OATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h l0l2l i Operations personnel observed that malfunctions in circulator speed measurement l
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| 10 l 31 l caused loss of circulator high speed signals. Reportable per Technical Specification l 10 l 4 l l AC 7.5.2(b)2, operation under a degraded mode permitted by LCO 4.4.1, Table 4.4-3.
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| l 10 i s t l No effect on plant operation.
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| Probable consequence was loss of high speed circulated E] trip function to one of three channels. No affect on public health or safety.
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| l l0l7ll Redundant system available and operable. Similar report RO 79-41.
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| l 10181I l
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| 7 8 9 80 DE CODE SU C E COMPONENT CODE SUB ODF SU E
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| lo19l l_Il Bl@ Wh l E lh lI lN lS lT lR lU l@ J@ l Zl@
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| 7 8
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| 9 10 11 12 13 18 19 20 SEQUENTI AL OCCURRENCE REPORT REVISION
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| , EVENT YEAR REPORT NO.
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| CODE TYPE N O.
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| h y"LER:Rol217l8l l-l l0 l0 l5 l I/l l 0l 31 l Xl b
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| W u'g 22 23 24 26 27 28 23 30 31 32 TK N A O
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| ON P NT M
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| HOURS SB I POR 8.
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| SUPPL MANUPAC RER lXl@lXl@
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| l Nl@
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| l C l 0 l 7 l 5 l@
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| 33 34 36 36 31 40 43 42 4-44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS
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| ~
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| lil0ll ITT Cannon connectors for circulator speed / wobble modifiers caused a loss of olant I
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| gl protective system functions to high speed trip circuits due to electronic circuit I
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| It i2i i unbalance caused by simtal cable connection resistance chnnee.
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| '*o di fie rs adius ted / l lil3l l installed spare cable (s) as required to restore channel functions. New connectors l
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| gI were certified. installed. and circuits tested.
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| I 7
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| 8 9 80 STA
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| % POWER OTHER STATUS DISCO RY DISCOVERY DESCRIPTf 0N li Is l W@ l 0 l 1 l 3 l@l N/A l
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| l A l@l Operator Observation l
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| A TlVITY CO TENT RELEAsEo OPRELEASE AMOUNT OF ACTIVITY LOCATION OP RELEASE l1 l6l
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| @l N/A l
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| l N/A l
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| 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE
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| ==DESCRIPTION==
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| l1l7i l Ol 0l 0l@l Zl@lN/A l
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| PERSONNE L INJURIES NUM8ER
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| ==DESCRIPTION==
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| l1 ls l l 0l 0l 0l@l N/A l
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| 7 8 9 11 12 go LOSS OP OR OAMAGE TO PACILtTV i ;'igi ;t"r' ~
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| sooaaio M i
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| i 7
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| 8 9 to 80 u.LJ I N f8l E CRIPTION ISSU E D
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| N/A i
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| i i i i i i i i i i i i li I
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| (303) 785-2253 NAME OF PREPARER,
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| PHONE.
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| }}
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| {{LER-Nav}}
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