ML070590691

AR 00546049 Report, Water Observed Coming Into the Trench in Bay 5 of Drywell

ML070590691
Person / Time
Site:	Oyster Creek
Issue date:	10/19/2006
From:	GPU Nuclear Corp
To:	Office of Nuclear Reactor Regulation
References
A2152838
Download: ML070590691 (3)

Text

Yage I or 3 Print I New Search I Home AR 00546049 Report Aff Fac: Oyster Creek AR Type: CR Status: APPROVED Aff Unit: NA Owed To: ACA PA LL Due Date: 12/01/2006 Aff System: 187 Event Date: 10/19/2006 CR LeveUClass: 3/D Disc Date: 10/19/2006 How Discovered: HO2 Orig Date: 10/19/2006 WWPIMS AR: A2152838 Component #: 187 Action Request Details

Subject:

WATER OBSERVED COMING INTO THE TRENCH I N BAY 5 OF DRYWELL

Description:

Originator: RALPH C LARZO Supv Contacted: SOM, OOM on night shift Condition

Description:

While performing an inspection of the drywell trenches, leakage into the bay 5 trench was observed to be approximately 1 quart per minute. The level in the trench would fill to approx. 5" and stabilize. The source of the leakage is not apparrent.

Immediate actions taken:

OCC was notified and an action plan prepared.

Recommended Actions:

1. Issue ACIT to prepare an action plan and evaluate impact of leakage.

2 . Issue AR t o perform the following: a) Test 1-8 sump for leakage by turning of sump pumps, raise level to high level setpoint (using a hose) and monitoring for level decrease. Monitor sump level for 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />. b)

Attempt to remove water from bay 5 trench until dry and c) I f unable to stop water coming into bay 5 trench, then Chemistry to evaluate use of tracing agent injected into 1-8 sump.

What activities, processes, or procedures were involved?

Drywell inspections Why did the condition happen?

Unknown a t this time What are the consequences?

Leakage could impact drywell Were any procedural requirements impacted?

No Were there any adverse physical conditions?

Unknown until leakage sourse identified.

List of knowledgeable individuals:

Chris Wilson, Howie Ray Repeat or similar condition?

No Operable Basis:

REB - Long term corrosion issue - Drywell is fully operable.

Reportable Basis:

N/A http://cccmvd0 1.ceco.corn:6 123/cap/servlet/ReportARServlet 10/30/2006

SOC Reviewed by: THOMAS A POWELL 10/21/2006 08:21:52 CDT SOC Comments:

10-19-06 REB Close to the PIMS AR.

IR 545422 is closed t o this IR.

Followup to ENG 10/21/06 TAP - Risk and Uncertainty of this condition screen as Medium and Medium. ACE evaluation to Egnineering to determine the source of water and evaluate the physical and regulatory consequences of this condition. PORC review of the ACE is a l R 2 l Restart Requirement.

Close t o PIMS AR and ACE evaluation.

lynamic AR Attributes OUTAGE RELATED: 1R21 ADD 10122 MEV14 rrend Codes TC1 TC2 TC3 Proc Rank EQM MM N ERlOO P

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&sign ments Assign #: 0.1 Assigned To: Status: COMPLETE Aff Fac: Oyster Creek Prim Grp: ACAPALL Due Date: 10/24/2006 Assign Type: TRKG Sec Grp: Orig Due Date: cIcI/cIcI/cIcIcIcI Priority:

Schedule Ref:

Unit Condition:

Subject/Description: WATER OBSERVED COMING INTO THE TRENCH I N BAY 5 OF DRYWELL Assign #: 02

- Assigned To: UOOlFHR Status: NTFY/ASG Aff Fac: Oyster Creek Prim Grp: A5352NESDM Due Date: 11/01/2006 Assign Type: ACIT Sec Grp: Orig Due Date: 11/01/2006 Priority:

Schedule Ref:

Unit Condition:

Subject/Description: Document Tech eval resuts of inleakage to the drywell floor trenches.

Assign #: 03

- Assigned To: Status: NTFY/PRI Aff Fac: Oyster Creek Prim Grp: A5301RAPR Due Date: 11/02/2006 Assign Type: CA Sec Grp: Orig Due Date:

Priority:

Schedule Ref:

Unit Condition:

Subject/Description: Perform PORC review of DW Trench ACE prior to 1R21 restart.

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Assign #: 04

- Assigned To: U999A02 Status: NTFY/PRI Aff Fac: Oyster Creek Prim Grp: A5063NER Due Date: 12/01/2006 Assign Type: ACIT Sec Grp: Orig Due Date: 12/01/2006 Priority:

Schedule Ref:

Unit Condition:

Determine effect on the License Renewal Application Based on the conditions found in the trench Subject/Description: determine the effect of this operating experience on the License Renewal Application and initiate appropriate actions as needed to support the ongoing efforts to renew the operating license.

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