05000366/LER-1983-126, Amended LER 83-126/03L-0:on 831113,safety Relief Valve Tailpipe Temp Recorder 2B21-B614 Observed Stamping Erratically.Caused by Component Failure.Advancing Mechanism, Solenoid & Arm & Hub Assembly Replaced

Amended LER 83-126/03L-0:on 831113,safety Relief Valve Tailpipe Temp Recorder 2B21-B614 Observed Stamping Erratically.Caused by Component Failure.Advancing Mechanism, Solenoid & Arm & Hub Assembly Replaced

ML20082U318
Person / Time
Site:	Hatch
Issue date:	12/05/1983
From:	Nix H GEORGIA POWER CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
GM-83-1142, LER-83-126-03L-01, LER-83-126-3L-1, NUDOCS 8312160303
Download: ML20082U318 (4)

LER-2083-126, Amended LER 83-126/03L-0:on 831113,safety Relief Valve Tailpipe Temp Recorder 2B21-B614 Observed Stamping Erratically.Caused by Component Failure.Advancing Mechanism, Solenoid & Arm & Hub Assembly Replaced

Event date:
Report date:
3662083126R00 - NRC Website

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NIC FO';8# 366 U. 5 fiUCLEA3 C;EGULATOnY COMMISSION (3 71)

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REPORT D AT E

? 60 EVENT DESCRIPTION AND FMOB ABLE CONSFOUENCES IO 1:l l On 11/13/83, it was determined tha safety relief valve tailpipe temper- l

[ol3ll sture recorder 2B21-R614 was_ stamping erratically. The recorder receives l its inputs from temperature elements 2B21-K004 A-H, and K-M; therefore,

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,gg,,; l the recorder was declared inoperable. This event is contrary to the l 10 ! s l I

,o g y l requirements of Tech. Specs. Table 3.3.6.4-1, item 10.b. The health and l pl safety of the public were not affected by this non-repetitive event l

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g ELECTRIC TYPE HG MULTIPOINT RECORDER" procedure (HNP-2-5264), and  ;

satisfactorily returned to service on 11/12/83 at 2130 hours0.0247 days <br />0.592 hours <br />0.00352 weeks <br />8.10465e-4 months <br />.

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. NARRATIVE REPORT

• FOR LER 50-366/1983-126 LICENSEE  : GEORGIA POWER COMPANY FACILITY NAME  : EDWIN I. HATCH DOCKET NUMBER  : 50-366 Tech. Specs. section(s) which requires report:

This 30-day LER is required by Tech. Specs. section 6.9.1.9.b, because it showed that the unit did not meet the requirements of Tech. Specs. 3.3.6.4.

Plant conditions at the time of the event (s)-

The unit was in steady state operation at 2046 MWT (approximately 84% power) when this event occurred.

Detailed description of the event (s):

While performing a routine control room panel walk-down on 11/13/83 at approximately 1400 hours0.0162 days <br />0.389 hours <br />0.00231 weeks <br />5.327e-4 months <br />, operating personnel determined that safety relief value (SRV) tailpipe temperature recorder 2B21-R614 was stamping erratically. SRV temperature recorder 2B21-R614 receives its inputs from temperature elements 2821-N004 A-H and O K-M; therefore, recorder 2821-R614 was declared inoperable, and a 30 day LCO was established because the plant was unable to meet the requirements of item 10.b of Tech. Specs. Table 3.3.6.4-1.

Consequences of the event (s)-

This event did not affect plant operation. The health and safety of the public were not affected by this event.

Status of redundant or backup subsystems and/or systems:

All associated redundant systems were operable at the time of this event.

Justification for continued operation:

Operation was continued as permitted by Tech. Specs, section l 3.3.6.4, ACTION a.

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If repetitive. number of previous LER:

This event is non-repetitive.

( Narrative Report for LER 50-366/1983-126 ,

Page Two Impact to other systems and/or Unit:

This event had no impact upon other systems in Unit 2, or Unit 1.

Cause(s) of the event (s)-

After an investigation, te-hnicians determined that this event was caused by component failure. The General Electric type HG multipoint recorder (2821-R614) would not advance from one point to the next point properly (i.e., it would not indicate the temperat.re of one temperature element and then advance to indicate the te' ape ra ture of the succeeding temperature element). However, the teeperature for the point that was being recorded was correct.

Immediate Corrective Action: )

The recorder's (2B21-R614) advancing mechanism's solenoid, and its arm and hub assembly were replaced because they were worn. The recorder's proper operation was satisfactorily confirmed per the

" GENERAL ELECTRIC TYPE HG MULTIPOINT RECORDER" procedure (HNP-2-5264), and returned to service on 11/13/83 at 2130 hour0.0247 days <br />0.592 hours <br />0.00352 weeks <br />8.10465e-4 months <br />s- l t

rx Supplemental Corrective Action:

(~d)

No supplemental corrective action is required.

i Scheduled (future) corrective action:

j No future corrective action is required.

Action to prevent recurrence (if different from corrective actions):

N/A

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• D ['f n j3 p g . 4 4 Georgia Power Edwin I. Hatch Nuclear Plant Deceiber 5,1983 GM-83-1142 PLANT E. I. HATCH Licensee Event Report Docket No. 50-366  ;

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United States Nuclear Regulatory Commission Office of Inspection and Enforcement Region II Suite 3100 h 101 Marietta Street Atlanta, Georgia 30303 ATTENTION: Mr. James P. O'Reilly Attached is Licensee Event Report No. 50-366/1983-126. This report is required by Hatch Unit 2 Technical Specifications Section 6.9.1.9.b.

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. General Manager

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HCN/S /djs xc: R. J. Kelly G. F. Head OFFICIAL COPY

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Control Room Certified By -

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