05000265/LER-1996-002, Forwards LER 96-002-00.Licensee Revised Qcop 2300-1 to Ensure That Piping Downstream of Sys Isolation Valve Is Filled & Vented After Maint

Forwards LER 96-002-00.Licensee Revised Qcop 2300-1 to Ensure That Piping Downstream of Sys Isolation Valve Is Filled & Vented After Maint

ML20134H809
Person / Time
Site:	Quad Cities
Issue date:	11/04/1996
From:	Pearce L COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20134H811	List: 05000265/LER-1996-002, Forwards LER 96-002-00.Licensee Revised Qcop 2300-1 to Ensure That Piping Downstream of Sys Isolation Valve Is Filled & Vented After Maint 05000265/LER-1996-002-10, :on 961009,HPCI Sys Declared Inoperable.Caused by Improper Filling & Venting After Aug 1996 Maint.Air Purged from Sys & line-up Procedure Revised to Ensure Filling & Venting of Piping
References
LWP-96-077, LWP-96-77, NUDOCS 9611140326
Download: ML20134H809 (2)

LER-1996-002, Forwards LER 96-002-00.Licensee Revised Qcop 2300-1 to Ensure That Piping Downstream of Sys Isolation Valve Is Filled & Vented After Maint

Event date:
Report date:
Reporting criterion:	10 CFR 50.73(a)(2)(v), Loss of Safety Function
2651996002R00 - NRC Website

text

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LWP-96-077 November 4, 1996 U.S. Nuclear Regulatory Commission Washington, DC 20555 Attention:

Document Control Desk

Reference:

Quad Cities Nuclear Power Station Docket Number 50-265, DPR-30, Unit Two Enclosed is Licensee Event Report (LER)96-002, Revision 00, for Quad Cities Nuclear Power Station.

This report is submitted in accordance with the requirements of the Code of Federal Regulations, Title 10, Part 50.73(a)(2)(v)(D).

The licensee shall report any event or condition that alone could have prevented the fulfillment of the safety function of structures or systems that are needed to mitigate the consequences of an accident.

The following commitments are being made by this letter:

1.

Revise QCOP 2300-1, to ensure that the piping downstream of the system isolation valve is filled and vented after maintenance (that drains the piping). This will be completed by December 15, 1996.

2.

Revise QCOS 2300-9, to include adequate acceptance criteria to detect the HPCI discharge piping is not completely full. This will be completed by December 15, 1996.

3..

Revise QCOS 2300-6, to require that the Vent Verification procedure be performed immediately after the valve surveillance.

This will be completed by December 15, 1996.

4.

Evaluate the Reactor Core Isolation Cooling System and Safe Shutdown Make-up Pump piping configuration and procedures to determine if similar conditions exist.

This will be completed by December 1,1996.

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5.

Revise procedures as necessary following the above

commitment

This will be completed by March 1,1997.

6.

Perform a calculation to determine if the amount of trapped air in the HPCI system discharge piping would have caused an unacceptable water hammer. This will be completed by December 15, 1996.

7.

Submit a supplemental LER after the calculation in the above commitment is complete, if it is determined that the amount of trapped air present in the HPCI piping during this event would have caused an unacceptable water hammer.

This will b.e completed by January 15, 1997.

8.

This event will be covered during mods and lessons learned training for licensed and non-licensed operators. This will be completed by May 1, 1997.

If there are any questions or comments concerning this letter, please refer them to Charles Peterson, Regulatory Affairs Manager at 309-654-2241, ext. 3602.

Respectfully, COMMONWEALTH EDIS0N COMPANY QUAD CITIES NUCLEAR POWER STATION 4.B. &o/c/

L. W. Pearce Station Manager LWP/CP/plm Enclosure cc:

A. B. Beach, Regional Administrator, Region III R. M. Pulsifer, Project Manager, NRR C. Miller, Senior Reside ' Inspecter, Quad Cities R. J. Singer, MidAmerican : nergy Capany D. C. Tubbs, MidAmerican Energy Comp;ny P. Piet, Licensing, Comed F. Spangenberg, Regulatory Affairs Manager, Dresden INP0 Records Center i

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