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| {{Adams
| | #REDIRECT [[05000280/LER-1981-019-01, /01T-0:on 810707,urgent Failure Alarm for Control Rods Occurred,Indicating Rods Were Inoperrable.Caused by Blown Fuse in Power Cabinet.Fuse Replaced]] |
| | number = ML20009F744
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| | issue date = 07/21/1981
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| | title = LER 81-019/01T-0:on 810707,urgent Failure Alarm for Control Rods Occurred,Indicating Rods Were Inoperrable.Caused by Blown Fuse in Power Cabinet.Fuse Replaced
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| | author name = Wilson J
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| | author affiliation = VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
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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 = 05000280
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| | license number =
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| | contact person =
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| | document report number = LER-81-019-01T, LER-81-19-1T, NUDOCS 8107310489
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| | package number = ML20009F730
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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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| Nec SoRM '66 U. S. NUCLIAA REGULATORY OoMMISSICN
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| .T 771 LICENSEE EVENT RE* ORT
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| ::NTROL sLoco I ! ! l i I l (ptEAst pa:NT OR TYpf ALL RECUtREL INFORMATICN1 1 6@
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| i: -
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| *'*C i: ! -
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| t 3 .,,"] 1 74 so a si ss es aveNT :ATs 75 aescaT :47:
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| svENT :Es Rl*9CN ANO
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| * AOS ASLS 00NSEOUEN:Es h
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| ,,,:, ; With the unit critical at 0% power curing low p&er ohysics testing, an urgent i I
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| ,,,33 9 failure alarm occurred, indicating that the control rods were inoperable. This t g . ; condition existed for more than two hours, with the unit critical, contrary to the I
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| , i ,3, , requirements of T.S.-3.12.C.3 This is reportable per ' 3. 6.6.2a. (2) . The unit ]
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| , ,a,,;; remained in a controllable state throughout the event, and the rods were caeable of' f
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| !o#7: I being droceed if recuired. Ther= fore, the health and safety of the oublic were not I i: ,eii affected. t so
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| CAUSE OE30 Rip 1CN AND COP 5.20"*gvE ACTCNS @
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| :i 51IThe centrol rods were inocerable because of a blown fuse in a oower cabiker. The i
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| /
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| i jii ; lunit was maintained cr'itical for more than the allowable two hour oeriod due to ?
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| ,, , ., ;inadecuate annunciator procedures. The fuse was reolaced and the annunciator I
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| ,;,iprocedure wi11 be revised. I is 44! I-7 8 9 80
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| .s % POWga :Ts*ER s*A"Us 1 : ERY :Ise:VERY OEsC88'T1CN ii is 3! 1l B l@ 10 I O 10 2l@l11 N/A l lAl@!44 Ooerational Event I 7 to 44 d5 30 A:*:vtTv ::NTENT EELEAst: Opagb1Ast AMCUNT :F AC9vt'v - L:CA"1:N O,4ELIAst " "
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| lt ist
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| !:::: !Nl issus:@l:ss:= men C-N/A l 1, . II11f 81I it lt; 7 e s c 53 5: 80 3 8107310489 810721 J. L. Wilson (80s, 357-318h *
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| ~
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| PDR ADOCK 05000280 ____.__.,___".,,r_
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| l .S- . _ _ _ _ ,.__PDR_ _ _ _ _ _ _ _ _ , _ _ _ _ _ _ _ _ _ _ _
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| SURRY POWER STATION, UNIT 1 DOCKET NO: 50-280 REPORT NO: 81-019/01T-0 EVENT DATE: 07-07-81 FAILURE TO SHUTDOWN WITH lNOPERABLE RODS ,
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| : 1. DESCRIPTISH OF EVENT:
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| With th<< unit critical at 0% power curing low power physics testing, an urgent f ailure alarm occurred, indicating that the control cods were inoperabic. This condition existed for more than two hours, but the unit was maintained critical. This is contrary to T.S.-3.12.C.3, and is reportable per T.S.-6.6.2a(2).
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| : 2. PROBABLE CONSEQUENCES:
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| The rods remained inoperable fer less than 3 hours. The unit remained in a controllable state throughout this period, and all control rods were capable of being dropped if required. Therefore, the health and safety of the public were not affected. -
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| 3 CAUSE:
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| The control rods were Inoperable because of a blown fuse in a power cabinet.
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| The unit was maintained critical for greater than the two hour period al-lowed by the Technical Specifications due. to inadequate annunciator proce-dures.
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| : 4. IMMEDIATE CORRECTIVE ACTION:
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| The blown fuse was located and replaced, making the control rod system operable.
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| 5 SUBSEQUENT CORRECTIVE ACTION:
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| None required.
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| : 6. ACTION TAKEN TO PREVENT RECURRENCE:
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| The annunciator procedure will be revised to provide further guidance to the operators concerning control rod operability requirements.
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| : 7. GENERIC IMPLICATIONS:
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| None.
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| l S-}}
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