ML17266A217

LER 80-023/03L-0:on 800511,during Power Ascension,Control Element Assemblies 19 & 58 Dropped to Full Insertion.Caused by Failure of 15-volt Power Supply Units.Both Control Element Assemblies Were Restored

ML17266A217
Person / Time
Site:	Saint Lucie
Issue date:	06/10/1980
From:	Schoppman M FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML17208A733	List: ML17208A732 ML17266A217
References
LER-80-023-03L, LER-80-23-3L, NUDOCS 8006230495
Download: ML17266A217 (2)

Text

~ ~

+

~ e

,

~ I e

NRC PORM SSS U S NUCLEAR RlfCULATORYCOIIIIIIISSIOH IT 771 LICENSEE EVENT REPORT l

Ot-'i I II.. illIQeI~Qe CON YROL SLOCICI I Ql IPLEAsK PRINT OR TYP AI L, O'EcvIAKo IHPORI4ATIQNI

~

[001]

7

~o CON Y 0 i 9

I I. ls LICENSEE CQQE

":*iL'0 60 L Si1 sVKNYOKSCRIPY!ON 'NO PROSAgl 61 ower a c.a '

lQz

~

COCEATNUMSKII

"

0f OI0

"

K CC,'IscCU~VCES QIP 66

'O~

UCSNSK:IIeMd KA n

I 67 f 1 4VKNT QATK ful 15 1t 8

'

I 6

0 'QK I4 LIC~seef 4 TTPS 0

15 6 1 Jo I

RKPCAT QA. 3 51 0 I8 10

~e in 56 30 Qs 1a corda le was initiated with reactor ower a The ow"r su ly, unit for CHA 19 had failed. The ower su77 . v T a

~os re'l c CEA 19 was ali ned with its CEA roun hei ht. On 5-11-80 CEA 58 drc77oed. Ao ro riate act on was taken a d E 8 1 P

~07 I.6-.c rouTI osition. Similar occurrences were re or ed as I,EP

~ps 335-76-37. 78-21 79-6, 80-2.

7 6 9 STSTK4 CQCS CAUSE CAU5E

~

CCMP. VALVK

'0

~S '0~lS CCQE SUSCCPE CCMPQNKNT <<QQK SJ90009 5USCQCK

~QS ~dS ~4S 14 oQ

'~TF'e~of I

7 6 9 10 II IZ Ig ~ 15 19

~

540UENTIAL OCCJ44EIICE RSPQAT RKVISIQk LsAIRO i~"

rVSNTTsAA l~ AKPOIITNO

~oz CQCK TTPS ~

~ NQ,

~S Qii LK ~z ~o OS 73 ZIP ~ KF' 77 ~

A TICN rvTUAK KPPKci SNUTppwy ATTACHMKNT eIPAQA PRIM s COMP, CQM roy SN 7 Cy r~'IT TAKEN AL<<TICN

~Si'-iS LJS LJS 55 94 5IETNCO 76 01

' AQUAS QZZ

~ 40 SUSM!TTKO LJS LJS MS 41 PQAed Sud. 5 JPPUKA MANU r A~eel A EA

$7 CAUSK OSSCRIPTTON ANO CORRKC IVK ACTIONS QZ7 0 The cause of both dro77oed CEAs was due to failed 15V ower su 1 units

~II S IIN - V) Both CEAs were restored in 30 minutes or less and

',rlormall o e.ation was r sumed Sin e th se OT I I a~it is 77ossible that the recent failure a e ho' hT'oo1. '

CZ3I 3 9 o ~

90 PACIU.V 5 Aiu5

~

~i PCTISA IQ QTIIKilSTA, US Q QlscQVKAT055CR>>TI y QS ULNAS i~11 I hA ~AQSI 0 erator Observation 3 IO I~ 17 45 A&eellTT CCNTKTT AKLKASKO 0* ASLKA55 ~

AMcuyTQP ACTIVITYQZE LOCATION pr AKLKAS>> Qs f s I0 I I P. l ~57 Lr IQZA NA NA 7 3 5 Id II 44 45 7 Ai yySL KIIPCQ 495

~ eIKUMfKz TPK QI PIPTIQNQ<<o 7 5

~OI lo II

'Q~!QlIfi 30

~iIe LoOooo PKASCNNEI. UMUAeds NUMSKA IlQil

= - ~ -8 7 3 5 ll I.CSSCP CA 04MACK .0 PAC'UTV QIIORPRKPARKR M. A. Scho 2-3802 f/

man. PNoNel 305-8 0089 9 4 It