ML20009F478
| ML20009F478 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 07/21/1981 |
| From: | Pastva M CAROLINA POWER & LIGHT CO. |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| Shared Package | |
| ML20009F475 | List: |
| References | |
| LER-81-061-03L, LER-81-61-3L, NUDOCS 8107310216 | |
| Download: ML20009F478 (2) | |
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3 77)
- LICENSEE EVENT REPORT
- (PLSASE PAINT OR TYPE ALL REQUIRtD INFORMATION)
CONTROL BLOCK: l 1
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0 1 l N I LICENSEE C l BCODE l E lP l 2 l@l0 l 0 l -l LICENSE 0 l 0NUMBER l0l0l0l-l0 25 l O_ 26 }@lLICENSE4 lTYPE1 lJO1 l 157 CAT l l@
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@l0 l5 l0DoGKET 61 l -l 0l NUMBER 3l 2 l 4 @l3 0 l 6 o8 l 2DATEl 9 l 8 l 1 @l REPORT EVENT 74 75 0 l 7OATE l 2 l 1l 80 8 l 1 l@
EVENT DESCRIPTION AND PRO 8ABLE CONSEQUENCES h l o 12 l l During the performance of Diesel Generator Actual Loading Test, PT 12.1.1, No. 4 l lo i3 J l Diesel Generator started as required but did not develop generator field voltage. l 10141 l This test simulates a loss of off-site power in conjunction with an ECCS test signal. l lo!s] I This event did not affect the health and safety of the public. [
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Io i7I l e ,i Technical Specifications 3.8.1.1, 6.9.1.9b l I o (8 I I
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9 10 11 12 13 18 19 20 OCCURRENCE REPORT REVISION SEQUENTIAL
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43 44 47 CAUSE DESCRIPTION AND COR3ECTIVE ACTIONS ,,
e, No. 17, ll1 l o l l A f ailed electrical coil in the diesel generator's field shorting dev1 I 1iIi1 I crevented the generator field from flashing when the diesel started. The coil. Model I l i 121 1 No. 9103B, was reolaced and the PT was successfully cerformed. No cause was deter- l 2 1i131 I mined for the failed coil. Plant documentation shows.no historv of orevious similar l
- l i 14 I l coil failures, therefore this failure has been attributed to a random failure. 80 I
- 7 8 9 -
OTHER STATUS IS O RY DISCOVERY OESCRIPTION SA % POWER ll1 l5 l (,J,_j h l 0l 5l 0l @ l NA l l B l@l Periodic Test .ng i _]
ACTivtTY CO TENT AMOUNT OF ACTIVITY LOCATION OF RELEASE RELEASED OF RELEASE l l NA l il1 16l 7 8 9 W @ d @ l NA 10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION NA l
- 11 171 1 0 l O f O l@l Z l@l' 8
* * ' 2 PE RSONN E'L iN3u'Ri es NUMBER DESCRtPTION l
ll1 i7 1818 9 l ol o l 01@l12 11 NA 80 LOSS OF OR DAMAGE To FACILITY TYPE DESCRIPTION NA l ll119l* 'l Zl@l Pu8t$Tv 8107310216 810721 NRC USE ONLY .
iSsuEO DESCRIPTION P b DR ADOCK 05000324 12lollNlhl NA S PDR [ ll lllllIll !!l{
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NAM OF PRMPAR$R
" J. Pastva, Jr.
-- PHONE: (919) 457-9521 2
LER ATI'ACHMENT - RO #2-81-61 Facility: BSEP Unit No. 2 Event Date: 06/29/81 During the initial performance of the periodic test (PT), No. 4 diesel generator did not develop generator field voltage because a f ailed electrical coil in the generator's field shorting device No. 17 prevented the contacts from opening.
This device is designed to short the generator's electrical field when t's diesel is not running. When the diesel is started, the device's coil is
- energized to open electrical contacts and allow the generator field to flash.
Whenever a diese'. trip is initiated, the device's coil is again energized and the contacts are closed thus ollapsing the generator's field. An inspection of this coil e- *.he remaining three diesel genera:ars did not reveal any problems.
No specific cause could be determined for the coil failure. This event is considered to be isolated requiring no further corrective action.
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