05000280/LER-1980-025-03, /03L-0:on 801003,w/Unit 2 at 100% Power,Periodic Test 27D Revealed That Amperage for Circuit 2A Panel 10 Was Below Acceptance Criteria.Caused by Damaged Heat Tracing Tape.Verified That Redundant Circuit Was Operable

/03L-0:on 801003,w/Unit 2 at 100% Power,Periodic Test 27D Revealed That Amperage for Circuit 2A Panel 10 Was Below Acceptance Criteria.Caused by Damaged Heat Tracing Tape.Verified That Redundant Circuit Was Operable

ML18139A755
Person / Time
Site:	Surry
Issue date:	10/16/1980
From:	Joshua Wilson VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18139A602	List: 05000280/LER-1980-016-03, /03L-0:on 800916,w/unit Operating Steady State at 100% power,TV-SS-201B Would Not Remain Closed When Control Switch Was Released.Cause Undetermined.Inside Trip Valve Closed & Air Secured to TV-SS-201B 05000280/LER-1980-025-03, /03L-0:on 801003,w/Unit 2 at 100% Power,Periodic Test 27D Revealed That Amperage for Circuit 2A Panel 10 Was Below Acceptance Criteria.Caused by Damaged Heat Tracing Tape.Verified That Redundant Circuit Was Operable 05000280/LER-1980-064-03, /03L-0:on 800916,w/Unit 1 at Cold Shutdown & Unit 2 at 100% Power,Auxiliary Bldg Filter Banks Found to Be Less Efficient than Required.Caused by Settling of Charcoal in Filters.Filters Replaced 05000280/LER-1980-065-03, /03L-0:on 800917,w/unit at Refueling Shutdown, MOV-SW-103B Did Not Operate Electrically During Flush of Recirculation Spray Heat Exchangers.Cause Undetermined,But Marine Growth Suspected.Valve Manually Cycled ML18139A601
References
LER-80-025-03L-03, LER-80-25-3L-3, NUDOCS 8010200524
Download: ML18139A755 (2)

LER-1980-025, /03L-0:on 801003,w/Unit 2 at 100% Power,Periodic Test 27D Revealed That Amperage for Circuit 2A Panel 10 Was Below Acceptance Criteria.Caused by Damaged Heat Tracing Tape.Verified That Redundant Circuit Was Operable

Event date:
Report date:
2801980025R03 - NRC Website

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2J2J I With Unit #2 at 100% power, Periodic Test 27D revealed that the amperage for Circuit 2A Panel 10 (Unit 112 BIT inlet line and valves MOV-2867 A & B) was below the Accept-ance Criteria stipulated in the.PT.

The redundant Heat Tracing Circuit was operable.

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This is a degraded mode of operation as specified in T. S. 3. 3. B. 5 and is report ab le

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in accordance with T.S.6.6.2.b(2).

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Im The Heat Tracing Tape was; damaged during :erection* of scaffolding to s_upport IILechanicall work in the nearby area.

The defective Heat Tracing Tap~ was replaced and verified TIIJ.1-_o_p_e_r_a_b_l_e_. ______________________________________ _

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ATTACHMENT 1 SURRY POWER STATION, UNIT 2 DOCKET NO:

50-281 REPORT NO:

80-025/03L-O EVENT DATE:

10-03-80 TITLE OF REPORT:

HEAT TRACING FAILURE

1.

Description of Event

With Unit 2 at 100% power, Pe.riodic T.est 27D revealed that the amp readings for circuit 2A Panel.10 (Unit #2 BIT inlet line and valv.es) were below the Acceptance Criteria stipulated in the PT.

This is a degraded mode of operation as specified in T.S.3.3.B.5 and is re-portable in accordance with T.S.6.6.2.b(2).

2.

Prob ab le Consequences & Status of Redundant Systems:

3.

4.

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.

Cause

The *Heat Tracing Tape was damaged during..erection of scaffolding to support* mechanical work in the nearby area.

Immediate Corrective Action

The immediate corrective action was to verify that the redundant circuit was operable.

5.

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:

No additional *actions are deemed necessary.

7.

Generic Implications:

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

Long lead items are b.eing procured.

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