05000280/LER-1978-034, Update to LER 78-034/01X-2 on 781101:17 Spare Process Piping Containment Penetrations Were Not Capped.Condition Has Been Overlooked Since Const.Design Change Approved to Weld Caps on Open Ends

Update to LER 78-034/01X-2 on 781101:17 Spare Process Piping Containment Penetrations Were Not Capped.Condition Has Been Overlooked Since Const.Design Change Approved to Weld Caps on Open Ends

ML18116A368
Person / Time
Site:	Surry
Issue date:	08/10/1979
From:	Stewart W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18116A367	List: 05000280/LER-1978-034, Update to LER 78-034/01X-2 on 781101:17 Spare Process Piping Containment Penetrations Were Not Capped.Condition Has Been Overlooked Since Const.Design Change Approved to Weld Caps on Open Ends
References
LER-78-034-01X, LER-78-34-1X, NUDOCS 7908160484
Download: ML18116A368 (2)

LER-1978-034, Update to LER 78-034/01X-2 on 781101:17 Spare Process Piping Containment Penetrations Were Not Capped.Condition Has Been Overlooked Since Const.Design Change Approved to Weld Caps on Open Ends

Event date:
Report date:
2801978034R00 - NRC Website

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!During a routine inspection on 10/27/78, it was noted that 17 spare process piping

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1containment penetrations on Unit 1 and 23 on Unit 2 were not capped in the Auxiliary [rn] !Building, although the inside ends were sealed.. This condition is less conservative.

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44 47 r;-Qi] !The condition appears to have existed since construction and is assumed to have been _J [I]IJ 1overlooked at that time.

The station intends to conform to FSAR. A design change (No. I [OJ] 179-01) has been approved to modify the penetrations by welding caps to their open ends. I o=IIJ IAt this time, the penetrations are not capped because of delays in receiving materials u:::8J !that are certified to conform with a Category 1 system.

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e Attachment (page 1 of 1)

Surry Power Station, Unit 1 Docket No:

50-280/50-281 Report No:

78-034/0lX-2 Event Date: 11-1-78 Updated Report - Previou~eport dated 12/13/78 Title of Report:

Spare Process Piping Penetrations

1.

Description of Event

During a routine inspection on 10/27/78, it was noted that 17 spare process piping containment penetrations on Unit 1 and 23 on Unit 2 had never been capped in the Auxiliary Building end.

The containment ends are capped.

The condition has existed since :the construction period, and is les$ conservative than described in FSAR Section 5.2.

Upon review, on 11/1/78, of the docu-mentation identifying the condition, it was determined that the condition was reportable in accordance with Technical Specification 6.6.2.a.(9).

This report is applicable to Surry 1 (Docket 50-280) and Surry Unit 2 (Docket 50-281).

2.

Probable Consequences/Status of Redundant Systems:

All spare penetrations are sealed on the inside (containment) ends of the penetrations.

There has been no compromise of containment integrity as evidenced by the fact the containment has experienced two ILRT tests and five years of operation with no indication of degradation of the inside caps.

Therefore, the health and safety of the public have not been affected.

3.

Cause

It appears that the outside ends of the penetrations were left uncapped at the completion of construction.

As of the present time, no analysis has reen found in files to rationalize a departure from the provisions of the FSAR even though the document has not been updated.

It must be assumed that the cap installation was overlooked.

4.

Immediate Corrective Action

An immediate inventory was conducted to verify the condition initially re-ported.

The Architect-Engineer was requested to advise on a method and procedures for correcting the condition.

5.

Subsequent Corrective Action:

Contrary to the date of completion specified by the previous LER (dated 12/13/78) the spare piping penetrations* are not:- yet capped. "Materials tµat have been received by the station and accepted by the station Quality Control Department are in the field to be installed.

The balance of the penetrations will be sealed upon receipt and acceptance of additional materials by the. -Quality Control- *Department.

6.

Actions Taken to Prevent Recurrence The situation described is a result of the construction process.

The pro-cedural controls now applicable to changes in facility configuration will preclude a recurrence.

7.

Generic Implications:

None LER:M2