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| {{Adams
| | #REDIRECT [[05000296/LER-1981-009-03, /03L-0:on 810203,diesel Generator 3C Failed to Stop within Appropriate Time.Diesel Shut Down & on Attempted Restart Failed Two Out of Three Times.Failure to Stop Caused by Relay Failure.Cause of Inoperability Unknown]] |
| | number = ML19341C975
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| | issue date = 02/27/1981
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| | title = LER 81-009/03L-0:on 810203,diesel Generator 3C Failed to Stop within Appropriate Time.Diesel Shut Down & on Attempted Restart Failed Two Out of Three Times.Failure to Stop Caused by Relay Failure.Cause of Inoperability Unknown
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| | author name =
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| | author affiliation = TENNESSEE VALLEY AUTHORITY
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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 = 05000296
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| | license number =
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| | contact person =
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| | document report number = LER-81-009-03L-01, LER-81-9-3L-1, NUDOCS 8103040643
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| | package number = ML19341C974
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| | document type = LICENSEE EVENT REPORT (SEE ALSO AO,RO), TEXT-SAFETY REPORT
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| | page count = 2
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| }}
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| =Text=
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| {{#Wiki_filter:, _ _ . . . - _ - . .
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| 'RC FORM n
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| .. . , LICENSEE EVENT REPORT CONTROL BLOCK: l i
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| l l1 1 I e
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| Ih (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATIONI 0 t l l@
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| F e l A l Ll B l R l F l 3 l@150l0l-l0l0l0l0l0l-l0l0l@lkl1l1l1l1l@l 9 LICENSEE CODE I4 UCENSE NUMMM 25 26 LICENSE TYPE J0 5 7 GA f 64 CON'T
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| , IoIiI .Z?,% L_L_J@l 015101010 l 2ed l9I6!@loi210l3l8l1l@l0l21217I8 69 EVENT OATE 74 75 REPORT C ATE 1180l@
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| # 4 to 61 OOCKET NVMSER Evf NT DESCn.PTION AND PROSA8LE CONSEQUENCES h l D'tring nornal operation. while verfoming SI h.c.A.1 surelement A. D/G '4C fail-1 to l
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| ! o 12 l I
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| 1 O I 31 l stop within appropriate time frame during nomal diesel shutdown. Diesel was shut-f7TTl i down manually isolating the fuel. On attemeted restart the diesel failed to start on 1 4
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| l o I s l I two of three attempts. The diesel generator was then declared inoverable. Other l I O is I l equiment recuired by tech. stecs. was overable. I!o significant resulting events. Nel I o i il 1 dan.7er to health or safety of public. Uo erevious events.
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| ==Reference:==
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| $ECUE NTI AL CCCURRENCE REPORT REVIS3ON REPORT NO. COOE TYPE N O.
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| LEn Ro EVENT YE AR
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| @,Rycy 18 l1 l l-l 101019 l 26 y27 lo l3 I 28 29
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| l i l o l ] Investigation by elect. main, revealed nothing that would have prevented D/G from l Iil l l starting. Do starting problems were experienced during investigation. Since event I rTT 1 l D/G has been successfully tested for operability several times. SI program and l Ib g l bimonthly redtuxiant start testing should identify any starting problems. l t i i i t I recurrence control is required. l 80
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| / d 9 STA % POWER OTHER STATLis SCO V OISCOVERY DESCRIPTION li i"l l E l@ l110 l 0* ' l@l UA l 1 B l@l" SI h.9.A.1 Supplement A **
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| AMOUNT UA OF ACriv,TY I
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| * 10304 o lo'/ $ . -
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| . a ,
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| Tennessee Valley Authority Form BF-17 Browns Ferry Nudear Plant BF 15.2
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| - 1/10/79 LER SUPPLEMENTAL INFORMATION B FRO 2c6 /_81000 Technical Specification involved 3.9.3.2 Reported Under Technical Specification 6.7.2.b. (2)
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| : Date of Occurrence 2/7/61 Time of Occurrence ch22 __ Unit 3 Identification and Description of Occurrence:
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| During a nomal diesel shutdown. D/G 3C failed to stop within the appropriate time frame. The diesel was shutdown by =anually isolatin6 the fuel. On atte=pted restart the diesel failed to start on two out of three attempts. The diesel generator was then declared inoperable.
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| Conditions ' Prior to Occurrence: ,
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| j U-1 A 96%
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| U-2 0 9h5 U-3 9 100$
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| Action specified in the Technical Specificaticn Surveillance Requirements met due to inocerable equipment. Describe.
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| Equipment required by tech specs wa's operable, Appa_ rent Cause of Occurrence:
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| Investigation by electrical maintenance personnel did not reveal anything .that would have e
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| prevented the D/G from starting. Ihe reason the D/G failed to stop was failure or A!ECR (engine control relay). Also the seal-in contact for STLDI (start lockout relay for start circuit 1) was ' chattering. Ileither of these relsys separately or together would have pre-vented the D/G frem starting or made the D/G inoperable. The STLDI problem would have Analysis of Occurrence: trasuited in atte-mts to start beyond the coreal three attempts.
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| There was no damage to plant equipment. There was no activity release, no personnel exposure or injury and no danger to the health or safety of the public.
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| - Corrective Action: Th'c ECR AIO STLDI relays were replaced. portions of the redundant start test were satisfactoril'; performed. D/C operability was verified by performance of SIh.9.A.1 supplement A. IIo problems with starting were experienced during investigation by electrical maintenance pers,nnel. Tio recurrence control is required. *he present .-onthly SI program and hi-enthl: remindant start testing should identify any problems with D/G starting. Since f.hc event the 3/r has tested for operability several times. The next scheduled redundant
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| ! Failure Data: start test is for the period Feb. 23 through " arch 6. This should serve as an adecuate follow up on any start problems.
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| !
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| * Retention : Period - Lifetime; Responsibility - Administrative Supervisor
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| * Revision: s f
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| 1
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| -. .. - .-.}}
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