05000280/LER-1980-056-03, /03L-0:on 800818,at 89% Power,Periodic Test 27D Revealed Low Amperage for Circuit 7,panel 8.Caused by Damage to Heat Tracing Tape During Mechanical Work Nearby. Defective Tape Replaced & Verified Operable

/03L-0:on 800818,at 89% Power,Periodic Test 27D Revealed Low Amperage for Circuit 7,panel 8.Caused by Damage to Heat Tracing Tape During Mechanical Work Nearby. Defective Tape Replaced & Verified Operable

ML18139A522
Person / Time
Site:	Surry
Issue date:	09/17/1980
From:	Joshua Wilson VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18139A521	List: 05000280/LER-1980-056-03, /03L-0:on 800818,at 89% Power,Periodic Test 27D Revealed Low Amperage for Circuit 7,panel 8.Caused by Damage to Heat Tracing Tape During Mechanical Work Nearby. Defective Tape Replaced & Verified Operable 05000280/LER-1980-057-03, /03L-0:on 800818,at 89% Power,Periodic Test 27D Revealed Low Amperage Reading for Circuit 13A Boron Injection Recirculation to Boric Acid Tanks,Panel 9.Caused by Failure of Heat Tracing Tape.Design Change Initiated ML18139A520
References
LER-80-056-03L-01, LER-80-56-3L-1, NUDOCS 8009230661
Download: ML18139A522 (2)

LER-1980-056, /03L-0:on 800818,at 89% Power,Periodic Test 27D Revealed Low Amperage for Circuit 7,panel 8.Caused by Damage to Heat Tracing Tape During Mechanical Work Nearby. Defective Tape Replaced & Verified Operable

Event date:
Report date:
2801980056R03 - NRC Website

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~*j 2 j ~-ith Unit {.tl at 89% power, Periodic Test 27D revealed that the anperage for Circuit

TIIJ L__? __ Panel 8 (Unit :ftl. filter outlet to blender) was below the Acceptance Criteria 0 1 4 j L_~~ipulated in the PT.

The redundant Heat Tracing Circuit was operable.

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ATTACHMENT 1

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SURRY POWRR STATION, UNIT 1 DOCKET NO:

50-280 REPORT NO:

80~056/0JL~O EVENT DATE:

8-18-80 TITLE OF REPORT:

HEAT TRACING FAILURE

1.

Description of Event

2.

With Unit 1 at 89% power, Periodic Test 27D revealed that the amp readings for circuit 7 Panel 8 (Unit #1 Filter outlet to blender) were below the Acceptance Criteria stipulated in the PT.

This is a degraded mode of operation as specified in T.S.3.2.D.3 and is reportable*.in accordance with T.S.6.6.2.b(2).

Probable Consequences & Status of Redundant Systems:

The Heat Tracing is intended to maintain a temperature above that needed for flow.

The redundant Heat Tracing.. Circuit was operable, therefore, the health and safety of the public were not affected.

3.

Cause

The Heat Tracing Tape was damaged during mechan:it:a.1-,iork in the***

nearby area.

4.

Immediate Corrective Action

5.

<Th:e imme<iiiate. c_crr.-r;_~*_c.ti-ve- *a.ction was to verify that the redund?nt circuit was operable:

Subsequent Corrective Action:

The defective Heat Tracing Circuit was replaced within the time span specified by the Technical Specifications.

6.

Action Taken to Prevent Recurrence:

7.

No additional actions are deemed necessary.

Generic Implications:

The task force has reviewed the total spectrum of the Heat Tracing system and a Design Change is being prepared as a result of the Task Force Study.

Long lead items are being procured.