05000272/LER-2077-090-03, Inoperability of Intermediate Range Channel N35
| ML19031B534 | |
| Person / Time | |
|---|---|
| Site: | Salem  |
| Issue date: | 01/24/1978 |
| From: | Librizzi F Public Service Electric & Gas Co |
| To: | Grier B NRC/IE, NRC Region 1 |
| References | |
| LER 1977-090-03 | |
| Download: ML19031B534 (3) | |
| Event date: | |
|---|---|
| Report date: | |
| 2722077090R03 - NRC Website | |
text
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PSEG 9 Public Service Electric and Gas Co:~*1pa'"~Y 80 ParK Place Ne1'.'arr,_ NJ 07101 Phorir" 201 430-7000 Mr. Boyce H. Grier Director of USNRC January 24, 1978 Office of Inspection and Enforcement Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406
Dear Mr. Grier:
LICENSE NO. DPR-70 DOCKET NO. 50-272 REPORTABLE OCCURRENCE 77~90/03L Pursuant to the requirements of Salem Generating Station Unit No. 1 Technical Specifications, Section 6.9.1, we are submitting Licensee Event Report for Reportable Occurrence 77-90/03L.
This report is required within thirty (30) days of the occurrence, but because of a severe snow storm and resulting work disruption, this report is one (1) day late.*
Very truly yours, F. P. Librizzi General Manager -
Electric Production CC:
Director, Office of Inspection and Enforcement (30 Copies)
Director, Office of Management Information and Program Control (3 Copies) 95 2001 1400"1 i 9.77
Report Number:
Report Date:
Occurrence Date:
Facility:
e-90/Q3L 1/4/78 12/22/77 Salem Generating Station Public Service Electric & Gas Company Hancocks Bridge, New Jersey 08038 IDENTIFICATION OF OCCURRENCE:
Intermediate Range Channel N35 Inoperable CONDITIONS PRIOR TO OCCURRENCE:
Operational Mode 1 -
Reactor Power:
100%
DESCRIPTION OF OCCURRENCE:
During the functional test on Intermediate Range Channel N35,.the connector plug on the signal cable came off.
Technical Specifica-tion 3.3.1.1 Action 3.c was implemented.
Instrumentation personnel reinstalled the connector plug and completed the functional test.
Technical Specification 3.3.1.1 Action 3.c was then terminated.
Channei N35 was inoperable for one hour and thirty-seven minutes.
DESIGNATION OF APPARENT CAUSE OF OCCURRENCE:
During routine testing, it is necessary to disconnect and reconnect the signal cable.
Repeated use of this connector plug caused it to become loose such that it came off the signal cable.
ANALYSIS OF OCCURRENCE:
Technical Specification 3.3.1.1 Action Statement 3 states that with the number of channels operable one less than required by the minimum channels operable requirement and with the thermal power level above 5% of rated thermal power, power operation may continue.
Thermal power remained above 5% throughout this occurrence, therefore, no further action was required.
CORRECTIVE ACTION
The signal connector plug was reinstalled on the signal cable and the channel functional test was completed satisfactorily.
FAILURE DATA:
N/A Prepared by~~T_.~L~*-'-S~p~e_n_c~e_r~~~~-
Manager -
Generating Station SORC Meeting No.
1-78
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LER NO.:
77""".90/03L
~PORT DATE: 1/4/78 LICENSEE EVENT REPORT CONTROL BLOCK
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6 1.ICl!NSEE NAME
- 1.ICl!NSE NUMllER REPORT REPORT CATEGORY TY~ SOURCE OoCKET NUMBER 1.ICENSE TYPE EVENT CATE l!VENT TYPE REPORT CATE
~CON'Tw l.iJ Llt1
~P 151o1-1o1 21 71 2J 1112121217171 69
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75 EVENT OESCR.,TION
@:§JI During functional test on Intermediate Range Channel N35, the signal con]
7 89 80
@BJ nectar plug came off the signal lead.
Remaining channel operable.
7 8 9
@El I Connector plug reinstalled and functional test completed.
This is 7
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@Ji) I the second occurrence of this type.
(77-90/03L)
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7 8 9 SYSTEM COOE
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CAUSE
COOE L.fil 11 CAUSE OESCAIPTION COMPONENT COOE I Z I Z I Z I Z I Z-11..j 12 17 PRIME COMPONENT SUl"'l..IER I NI 43 COMPONENT MANUFACTURER IZl919191 44 47 11101.ATION II:Ll 48
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This occurrence was caused by the repeated use of this connector which
~I is disconnected 7
8 9 and reconnected durin~ testin~.
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!Ilfil..,_ __________________________________________________________________ -::::!
1 s s ao FACll.ITY METMOO OF [ill)
STATUS
'II.POWER OTM/. STATUS OISCOVERV OISCOVERY OESCRIPTIQH l.EJ.
11 IQ IQ I I NA I lh.J I
NLA I
7 a
9 10 12 13 45 46 BO FORM OF ACTIVITV CONTENT [ill]
REL.EASEO OF REL.EASE AMOUNT OF ACTIVITY I
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N/A I
N/A I
7 8
9 10 11 45 80 PERSONNEL EXPOSURES NUMBER TYPE OESCRIPTION
~1010101 lZJ I.
NLA J
7 9
11 12 13 PERSONNEL INJURIES NUMllER OESl::;RIPTION ITE11010101 I NLA I
7 8 9 11 12 80 OFFSITE CONSEQUENCES
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LOSS OR OAMAGE TO FACILITY TYPE OESCRIPTION Gil~ I NLA 7
8 ib GIB PUBLICITY 7
8 9 ao ADDITIONAL FACTORS ITI!J I
. N/A I
7 8 9 80 [j!J 7
It 80 NAME:
T. L. Soen~~r PHONE: (609)365-7000 Ext. Salem 528