ML19209D131: Difference between revisions

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{{Adams
#REDIRECT [[05000317/LER-1979-056-03, /03L-0:on 791001,output Voltage of Diesel Generator 11 Reached 4,800 Volts.Diesel Trip Occurred During Attempt to Lower Voltage.Caused by Loss of Calibr in Voltmeter Resistor.Resistor Replaced & Meter Recalibr]]
| number = ML19209D131
| issue date = 10/12/1979
| title = LER 79-056/03L-0:on 791001,output Voltage of Diesel Generator 11 Reached 4,800 Volts.Diesel Trip Occurred During Attempt to Lower Voltage.Caused by Loss of Calibr in Voltmeter Resistor.Resistor Replaced & Meter Recalibr
| author name = Bauer E, Heibel R
| author affiliation = BALTIMORE GAS & ELECTRIC CO.
| addressee name =
| addressee affiliation = NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
| docket = 05000317
| license number =
| contact person =
| document report number = LER-79-056-03L, LER-79-56-3L, NUDOCS 7910190436
| package number = ML19209D128
| document type = LICENSEE EVENT REPORT (SEE ALSO AO,RO), TEXT-SAFETY REPORT
| page count = 1
}}
 
=Text=
{{#Wiki_filter:mm LICENSEE EVENT REPORT
*-CCNTROL BLOCK: l llllll(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6 FITliMI01ClCINl1l@l010l-l010l01010l 1010l@l4Il111111l@l I l@7 8 9.LICENSEE CODE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE JO 57 CAT 58<CON'T S7,5 L j@l 0 l 5 l 010 l 0 l 31117 l@l11010111719 l@l110111217 lo l@
" o 1 7 8 60 61 DOCKET NUM8 ER 68 69 EVENT DATE 74 75 REPORT DATE 80- EVENT DESCRIPTION AND PROBABLE CONSEOUENCES O'o lDurina a surveillance test of 11 deisel aeneratcr the indicated output voltage
;o 2lwent to 4800 volts. While attempting to lower the voltage, the diesel tripped lo 3 lon undervoltage. #11 diesel generator was removed from service at 1335 10/1/79 and i Lo 4 Ireturncd to service at 1810 10/1/79. While'the diesel was inoperative, remaining lo s[ A.C. sources were checked in accordance with T.S.3.8.1.1.
This is not a repetitive g o el0 7l occurrence.
lo 8l80 DE C SUB COMPONENT CODE SU8 Code SU El E l E lg [Eg j E lE@ l Il Nl Sl Tl R' Ul@ l X l@ lX l@
O 9 7 8 9 10 11 12 13 18 19 20 ,.SEQUENTIAL OCCURRENCE REPORT REVislON LE R/RO EVEN' YE AR REPORT NO.
CODE TYPE N O.@ 4egl217 l9l_ll 01516ll/l LO I 3 lLl-ll0]22 23 24 26 27 21s 29 30 31 32 T N A O ON PL NT M MOURS 22 58 i FOA S.SUP LI R MANUFACTURER lAlgl34Z j g
{3bg jZ @l 0] 0l 0l ll N gl2Nj gl3AlglW l1 l2 l0 lg 36 37 40 41 4 4 44 47 33 CAUSE JESCRIPTION AND CORRECTIVE ACTIONS h linvestination of the faulty voltreter showed tha+ its A.C. calibratina series I i o t resistor had come out of tolerance and was causina the neter to indicate 900 1 i il volts higher. The faulty resistor was reolaced with a new 73.5 KIl resistor I , 7land the meter was recalibrated. This is not a ceneric croblem, there is no I i 3 f orevious historv of these resistors failino or nalfunctioninn.
I i 4 ST S% POWER OTHER STATUS DISCO RY DISCUS ELY DESCRIPTION lEl@ lll0l0l@l NAlBl@lOperator Observation li s ACTIVITY CONTENT AMOUNT OF ACTIVITY LC JATION OF RELE/SE ASE@oOFRELEASEl Zlg NAllNAlret 1 6ll'"""'' 'PERSONNEt ExPOSOES NUMBER TYPE DESCRl* TION l0l0l0l@lZl@l NAlt 7'' *iES PERSONNEL - uESCRiPriON@ NA
-Nuv8Eall0l0l0l@l1 a 80 7 8 9 11 12 w.' ' "fa^PWr**''" @
l174 016[Zj@lNAli 9"_7 91019o W 4 l El[@$'?CR,n,0N@
''*NR: use ONtY" ''SlNAlllllllll1111l; 2 o 68 69 80 5 7 8 9 10 (301) 234-7943/7917 2,-NAME OF PREPARER PHONE:****}}

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