ML19254E254

LER 79-069/03L-0:on 790926,reactor Core Isolation Cooling Turbine Trip Alarm Annunciated.Caused by Tripping of Local Mechanical Trip as Result of Employee Dropping Something on Latch.Covers Being Installed

ML19254E254
Person / Time
Site:	Brunswick
Issue date:	10/25/1979
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19254E247	List: ML19254E246 ML19254E254
References
LER-79-069-03L-01, LER-79-69-3L-1, NUDOCS 7910310380
Download: ML19254E254 (1)

Text

NRC FORM 366 U. S. NUCLEAR REGULATORY COMMISSION (7 77) i, LICENSEE EVENT REPORT CONTROL BLOCK: l 1

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(PLEASE PRINT 08 TYPE ALL REQUIRED INFORMATION) 0 1 lN lC l B E l p l 1 l@l 0 l0 l - l 0 l0 0 0 0 l- l0 l0 l@l4 1LICENSE l1 l1TYPE l1JOl@l$7 CATb8 l l@

7 8 9 LICENSEE CODE 14 15 LICENSE NUMBEH 25 26 CON'T IoIii S RM 60 I L l@l610 5 0 l- l0 3 l2 l5 l@l069 19 EVENT 9 l6 l7 19 h l0 l2 l5 p 9 lg 7 8 DOCK ET NUMBER 68 DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h 1012 l lDurine normal oneration. the "RCTC Turbino Trinnori" n1 nrm nnnim ci n t od . The onorneor l O 3'l found thr trip and throttle valve tripped and it would not reset from the RTGB. I O 4  : Technical Speci fications 3.7.4. 6.9.1.9b I O 5 l 10161I l 0 7 l l o a l I 7 8 9 80 SYSTEM CAUSE CAUSE COYP. VALVE CODE CODE SUBCODE COVPONENT CODE SU8 CODE SUBCODE O 9 Ic lE @ U@ l Zl@ I v l A l t l v i o l P lh Bl@ [Zj @

F 8 9 10 11 12 13 18 19 20

,,, SE QUE N TI AL OCCURRENCE REPORT REVISION LE R RO EVENT YE AR REPORT NO. CODE TYPE NO.

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_ 21 22 23 24 26 27 28 29 30 31 32 TAK N ACT N O PLANT TH HOURS 22 S 8 IT D FO 1 UB. S PPLIE MANUFA U ER lX lg[34Fjg _

Z l@ l36Z l@ l0 0l 0l 0 3/ 41 Nlg lY g lNl@ l T [ l j 4 l 7 lg 33 35 40 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS i 0 [Upon investigation, it was found that the local mechanical trip had been tripped. Thel 1i li I trip was reset and the RCIC turbine returned to service. It is believed that men work-l i 7 ling above the turbine caused the trip either by stepping or dropping something on the l i 3 l latch. Covers are being installed over both unit's RCIC latch mechanisms to prevent ]

l1 (4 g recurrence.

7 8 9 80 ST S  % POWER OTHER STA TUS bSCOVERY DISCOVE RY DESCR* TION i s E l@ l 0 9 4 l@l NA l l A lgl Operator Surveillance l ACTIVITY CONTENT RELEASED OF RE LE ASE AVOUNT OF ACTIVITY LOCATION OF RELEASE 2 6 jZ l@ l Zj NA l [ NA l 7 8 9 10 11 44 45 80 PE RSONNE L E XPOSUR ES N UP 'R E R li l il 101010 l@l TYPE Z NA

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• 80 PERSONNE L INJU IES NUMBER DESCRIPTION 7

1 a 8 9 0l0l0l@l 11 12 NA g LOSS OF OR D AMAGE TO F ACillTY TYPE DE SCRIP TION I i 191 l Z l@l NA 1245 356 i F 8 9 10 80 PUB L ICI TY ISSUED D E SC RIPTIO N "' 7910310 3 7 O N R C USE ON L Y

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o NAME OF PREPARER A* C* IO111SOU+_ Jr. PHnNF 919-457-9521 n