05000280/LER-1980-021-03, /03L-0:on 800327,during Performance of 1-PT-39B-1, Snubber 1-WAPD-HSS-148 Discovered W/Low Fluid Level in Reservoir.Caused by Fluid Leaking Out Through Reservoir to Block Tube Fitting.Snubber Declared Inoperable

/03L-0:on 800327,during Performance of 1-PT-39B-1, Snubber 1-WAPD-HSS-148 Discovered W/Low Fluid Level in Reservoir.Caused by Fluid Leaking Out Through Reservoir to Block Tube Fitting.Snubber Declared Inoperable

ML18139A177
Person / Time
Site:	Surry
Issue date:	04/24/1980
From:	Joshua Wilson VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18139A176	List: 05000280/LER-1980-021-03, /03L-0:on 800327,during Performance of 1-PT-39B-1, Snubber 1-WAPD-HSS-148 Discovered W/Low Fluid Level in Reservoir.Caused by Fluid Leaking Out Through Reservoir to Block Tube Fitting.Snubber Declared Inoperable ML18139A175
References
LER-80-021-03L-01, LER-80-21-3L-1, NUDOCS 8004280616
Download: ML18139A177 (2)

LER-1980-021, /03L-0:on 800327,during Performance of 1-PT-39B-1, Snubber 1-WAPD-HSS-148 Discovered W/Low Fluid Level in Reservoir.Caused by Fluid Leaking Out Through Reservoir to Block Tube Fitting.Snubber Declared Inoperable

Event date:
Report date:
2801980021R03 - NRC Website

text

--*-*ucENSEE EVENT-REPO.RT CONTROL BLOCK: ~'.....;..'.._I _..,____. _ __.__l._~---l 0 (PLEASE PRINT OR TYPE ~L-OUIREO INFORMATIONI 1

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• EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION ANO ?ROBABLE CONSEQUENCES @

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I During the performance of l-PT-39B-1, Inaccessible Snubber Visual Inspection, snubber

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l-WAPD-HSS-148 was discovered with low fluid level in the reservoir.

Engineering

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evaluation determined that the resf:!rvoir did not contain sufficient fluid for the [QJ:IJ I* snubber to perform its intended function and declared the snubber inoperable.

This

-~ event is reportable in accordance with Tech. Spec. 6.6.2.b.2.

Since no seismic [IIiJ I disturbances we~e experienced while the Unit was at power, *the health and safety of the

((I)) I public were not affected.

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DJJJ J The snubber will be repaired prior _to Unit Startup.

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Surry Power Docket No:

.. Report No:

Event Date:

Title:

Station Unit No. 1 50-280 80-022/03L-0 3-27.-80 Snubbers 1-HSS-RC-115/116

1)

DESCRIPTION OF EVENT

e Im.properly Installed During the performance of 1-PT-39B-1.~ Inaccessible* Snubbers Visual Inspection, snubbers l-Rc-nss..:116 and l-RC-HSs*...,117 were discovered in-stalled improperly, i.e. 90° out of 'proper position.

The snubbers were declared inoperable *. This event is reportable.in accordance with Tech.

Spec. 6.6.2.b.2.

2)

PROBABLE CONSEQUENCES The snubbers were installed with the reservoir below the valve block.

This could have caused air

• introduction into the. valve *block or cylinder thus preventing the snubbers from performing their intended function~

However, since no seismic disturbances were encountered while the Unit was at power, the health and safety of the public were not affected.

3)

CAUSE OF EVENT

The snubbers were installed improperly due to a.deficiency o*f tbe design change utilized to correct pipe support deficiencies discovered under IE Bulletin 79-14.

4)

IMMEDIATE CORRECTIVE ACTIONS

The snubbers were declared inoperable.

5)

SUBSEQUENCE CORRECTIVE ACTIONS The snubber end mounting bracket* wi:11 be.removed,

• rotated 90° and reinstalled.

The snubber will be purged :and reinstalled in the proper orientation_ prior *to Unit Startup.

6)

ACTION TAKEN TO PREVENT RECURRENCE Design personnel have been apprised of the importance of proper snubber orientation.

7)

GENER.IC IMPLICATIONS The Vi~ual Inspection performed at Unit shutdown covers all snubber installations.

Since no other snubbers were discovered installed improperly this event possesses no generic implications.

i !.