05000280/LER-1979-010-03, /03L-0 on 790323:while in Cold Shutdown, Discrepancies Found in Location & Configuration of Pipe Supports.Caused by Const Deficiencies & Util Maint.Necessary Repairs Will Be Made Prior to Startup

/03L-0 on 790323:while in Cold Shutdown, Discrepancies Found in Location & Configuration of Pipe Supports.Caused by Const Deficiencies & Util Maint.Necessary Repairs Will Be Made Prior to Startup

ML18114A467
Person / Time
Site:	Surry
Issue date:	04/18/1979
From:	Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18114A466	List: 05000280/LER-1979-010, Forwards LER 79-010/03L-0 05000280/LER-1979-010-03, /03L-0 on 790323:while in Cold Shutdown, Discrepancies Found in Location & Configuration of Pipe Supports.Caused by Const Deficiencies & Util Maint.Necessary Repairs Will Be Made Prior to Startup
References
LER-79-010-03L-02, LER-79-10-3L-2, NUDOCS 7904240366
Download: ML18114A467 (2)

LER-1979-010, /03L-0 on 790323:while in Cold Shutdown, Discrepancies Found in Location & Configuration of Pipe Supports.Caused by Const Deficiencies & Util Maint.Necessary Repairs Will Be Made Prior to Startup

Event date:
Report date:
2801979010R03 - NRC Website

text

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!During a verification of as-built piping drawings with the unit at cold shutdown,

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(Attachment, page 1 of 1)

Surry Power Docket No.

Report No.

Event Date:

Station, Unit 1 50-280 79-010/03L-0 03-23-79 Mislocated Supports

1. Description of Event

During an investigation of as-built piping conditions, with the unit at cold shutdown, Vepco and the AE discovered discrepancies in the location and configuration of some pipe supports.

2.

Probable Consequences and Status of Redundant Systems Although some discrepancies were found, it is felt that sufficient design conservatism and redundancy would have provided for safe shutdown capability in the occurrence of a seismic event.

3.

Cause

Most of the discrepancies are attributable to construction deficien-cies. Improper support configuration in one line is attributable to utility maintenance.

4.

Innnediate Corre~tive Action:

The unit was at cold shutdown.

All discrepancies were noted and repairs, if necessary, will be made prior to unit startup.

5.

Subsequent Corrective Action:

The outcome of the concurrent pi.pe stress re-analysis will determine if corrective measures are necessary.

6.

Action Taken to Prevent Recurrence:

Maintenance personnel have been made aware of the importance of proper re-installation of pipe supports removed for piping replacement.

7.

Generic Implications:

Surry Unit 2 piping systems will be checked during the current steam generator replacement outage.