ML19345A543
| ML19345A543 | |
| Person / Time | |
|---|---|
| Site: | Yankee Rowe |
| Issue date: | 01/14/1976 |
| From: | Boutwell R YANKEE ATOMIC ELECTRIC CO. |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML19345A540 | List: |
| References | |
| RO-50-29-75-18, NUDOCS 8011240155 | |
| Download: ML19345A543 (3) | |
Text
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i, LICENSEE EVENT REPORT (
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(PLEASE PflNT CLL 7.E1UIRED INF22 MAT 10N) 1 6
NAME LCENSE NUMBER l ?.!l AlY lK l R l 1 l l 0 l 0l-l0 l0 l 0 l 0 l 0l-l 0l 0l l4 l1 l1 l1 l1 l l0l1l Y
o1 7 89 14 15 25 26 30 31 32 s$N3 CATE00RY Ty p DOCKET NUMBER EVENT CATE REPORT DATE 01 cCNT l l
l y lLl l 015101-l 0l0 l 2 l 9 l l 1l 2l1 l5 l7 l5 l l 011l ll 417 l6 l 7 8 57 SS 59 60 61 68 69 74 75 80 EVEN7 DESCRIPTION
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PswE 80 svSTEu CAUSE COMPONENT CCMAONENT 0001 CODE COVPCNENT CODE SU8MER MANUFACTUAER VOLAT 10N
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12 17 43 44 47 48 CA'JSE DESCR;PTION lTne inspection of Ch. 5 cabling re ealed that the negative and positive leads extendind aE 7 89
@ Ifren the NI panel to the detector had been exchanced.
The leads were r6 connected as 80 7 89 l
W ldesicled ~ nd operationally tested satisfactorily.
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l 7 89 sA;p METHCQ OF 5'A*;S
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10 11 44 45 PE:3CNNEL EXPOSUAES 83
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7 a9 11 12 80 OFF5:TE CONSECUENCES
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7 89 LCES OR DAMAGE TO FAC!UTY 80 ME g y lCES;5PTON l
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,o EET DESCRIPTION:
During Core XII B.O.L. Zero Power Physics Testing the Intemediate Range detector, Ch. 5 CIC normally connected to the input of the Reactivity Computer for Physics Testing was tranp; sed to NI Ch. 3.
hhen the reactor was taken critical and power r'ised into the inter-cediate range, the operator noted that NI Ch. 3 had a negative SUR and a decreasing level signal. The reactor was tripped and an in-vestigatica initiated. A redundant channel, NI Ch. 4 was available and operable.
Therefore, had a condition requiring the SUR trip of the intermediate range channel occurred Ch. 4 would have functioned as designed with a resulting reactor trip signal.
This event is being reported in accordance with Technical Specification, Section E.2.b.2 and is repcrted as Reportable Occurrence 50-29/75-18.
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NHC( dTRIBUTION FOR PART 50 DOCI:(.AATERI AL' (TEMPORARY FOPM)
CONTROL NO:. 5 8 Y FILE: lucr:rmr rILF.
FRO.'.':
t'ankee Atomic Elde Co DATE OF DOC DATE REC'D LTR TWX RPT OTHER Rowe, Mass H A Autio 1 - U.7_e 1-20-76 XXX TO:
CRIG CC OTHER SENT URC PDR vv Mr O'Reilly none signed SENT LOCAL POR__ _XX CLASS UNCLASS PROPINFO INPUT NO CYS REC'D DOCKET NO:
XXXXXXXX 1
50-29 DESCRIPTION:
ENCLOSURES:
- trans the following:
License Event,Rpport #75-18 on 12-15-75 concerning failure of the inter =cdiate range detectee...........
PLANT NAME: Yankee Rowe FOR ACTION /INFC EI.1ATION 1-21-76 ehf
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