05000260/LER-1980-050-03, /03L-0:on 801119,intermediate Range Monitors B,D & H Did Not Respond During Initial Startup,Creating Less than Allowable Number of Operable Instrument Channels in Trip Sys B.Caused by Open Time Wire RG 114 A/U Cables.Cables

/03L-0:on 801119,intermediate Range Monitors B,D & H Did Not Respond During Initial Startup,Creating Less than Allowable Number of Operable Instrument Channels in Trip Sys B.Caused by Open Time Wire RG 114 A/U Cables.Cables Repaired

ML18025B259
Person / Time
Site:	Browns Ferry
Issue date:	12/12/1980
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18025B258	List: 05000260/LER-1980-050, Forwards LER 80-050/03L-0 05000260/LER-1980-050-03, /03L-0:on 801119,intermediate Range Monitors B,D & H Did Not Respond During Initial Startup,Creating Less than Allowable Number of Operable Instrument Channels in Trip Sys B.Caused by Open Time Wire RG 114 A/U Cables.Cables
References
LER-80-050-03L-03, LER-80-50-3L-3, NUDOCS 8012170647
Download: ML18025B259 (4)

LER-1980-050, /03L-0:on 801119,intermediate Range Monitors B,D & H Did Not Respond During Initial Startup,Creating Less than Allowable Number of Operable Instrument Channels in Trip Sys B.Caused by Open Time Wire RG 114 A/U Cables.Cables Repaired

Event date:
Report date:
2601980050R03 - NRC Website

text

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LICENSEE CODE 14 15 LICENSE NuhlOEA 25 26 IPLEASE PRINT OR TYPE 5(",",,cE ~LQB 0

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60 Gl DOCKET NuhlGEA GB G>J EVENT DATE EVENT DFSCRIPTION AND PROBABI.E CONSEOUENCES QIO [Du initial startu followin refuelin outa e

IRN's B

D ALL REQUIRED INFORMATION)

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0 00 74 75 RFPOAT DATE'0 and H did not res ond.

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~05 The minimum number of operable instrument channels in trip system HBH was less than allowed by T.S. Table 3.1.A.

Redundant IRM's in trip system A were operable.

There was no effect on the health or safety of the public.

Previous events:

None.

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0 21 22 23 24 26 27 28 29 30 31 32 ACT!ON FuTuAE EFFECT SHUTOowN ATTACHMENT NPADQ PAIME COMP.

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33 34 35 36 37 40 41 42 43 44 CAUSE DESCRIPTION ANDCORRECTIVE ACTIONS Q2l 0

The Time Wire RG 114 a u cables for IRM B D

and H were found o en in the dr ell.

Cable on H and connectors on B and D IRM's were re aired.

SMI 92.7 has been 2

written to identify any problems NIfter cable reroute b

Januar 2

1981.

3 h!ETHOD OF DISCOVEAY DISCOVERY DESCRIPTION Q3

~AQ31 Operator observation 45 46 LOCATION OF RELEASE Q NA 44 45 NAC USF OI:! Y GB G9 4

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9 FACILITY STATUS

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NAME OF PREPARER P IIONL.'

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"~ 'Tmncssee Valley Authority Browns Ferry Nuclear Plant Form BF-17 BF'5.2 1/10/79 LER SUPPLEMENTAL INFORMATION BPRO 260 /

8060 Technical Specification Involved 3.1 6.7.2.b(2)

Reported Under Technical Specification e

Date of Occurrencell/19/8O Time of Occurrence 1730 Unit

~

2 l

Identification and Descri tion of Occurrence:

During startup following a re ueling outage, IRM's B, D, and H did not respond.

Conditions Prior to Occurrence:

Unit 1 at 99X power.

Unit 2 startup following refueling outage Unit 3 at 87% power Action specified in the Technical Specification Surveillance Requirements met due to ino erable e ui ment.

Describe.

All rods inserted within the required 4-hour limit of Tech Spec Table 3.1.A.

A arent Cause of Occurrence:

Open cables in the drywell 'on IRM's B, D, and H.

Anal sis of Occurrence:

I There was no damage to plant equipment.

There was no activity release, no personnel exposure or injury and no effect on the health and safety of the public.

Corrective Action

Repaired cables and connectors.

SMI 92.7 has'een written to identify any problems at cable reroute.

Failure Data:

None

• Retention:

eriod - Lifetime; Responsibility - Administrative Supervisor

• Revision: