05000265/LER-1993-022, Informs of Cancellation of Commitment Contained in LER 93-022.RCIC Bed Plate Drain Lines Do Not Need to Be Rerouted Based on Check Valve Insp Frequency & Addition of Ball Valves

Informs of Cancellation of Commitment Contained in LER 93-022.RCIC Bed Plate Drain Lines Do Not Need to Be Rerouted Based on Check Valve Insp Frequency & Addition of Ball Valves

ML20216B959
Person / Time
Site:	Quad Cities
Issue date:	04/06/1998
From:	Sager D COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
SVP-98-109, NUDOCS 9804140211
Download: ML20216B959 (2)

LER-2093-022, Informs of Cancellation of Commitment Contained in LER 93-022.RCIC Bed Plate Drain Lines Do Not Need to Be Rerouted Based on Check Valve Insp Frequency & Addition of Ball Valves

Event date:
Report date:
2652093022R00 - NRC Website

text

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Commonw cahh i dimn ( .om;uny g Quad Cities Ocncr.iting st.nion

, , 2/~10 206th As enue North Cordou, IL 61212 T' 60

'lcl 309 65 4 22 il SVP-98-109 April 6,1998 1 U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Attention: Document Control Desk

Subject:

Quad Cities Nuclear Power Station Unit 2 Change of Commitment NRC Docket Number 50-265. DPR-30 l

Reference:

(a) G. G. Campbell (Comed) Letter (GGC-93-014) To USNRC, i Dated November 2,1993 l The purpose of this letter is to inform you of the cancellation of a commitment contained )

in Licensee Event Report (LER) 265/93-022, reference (a). l In this report, the station made the following commitment:

)

All applicable ECCS bedplate drains will be rerouted to floor drains inside the  !

respective corner rooms; following piping removal, the existing room penetrations l will be properly sealed.

i t

Previous to the subject LER, the Re .ctor Core Isolation Cooling (RCIC) bed plate drain j line was open to the common Core Spray /RCIC pump equipment drain header. As a j result of flooding concerns, due to debris found in the 2-1399-129 check valve, a i plumber's plug was installed in the RCIC bed plate drain on both units.

The initial plan was to reroute the RCIC bed plate drain to a floor drain inside of the l RCIC/ Core Spray room. Subsequently, during the performance of Operability Screenings for Problem Identification Forms 97-0580 and 98-0423, all four Emergency Core Cooling System (ECCS) corner room equipment drain check valves were inspected, tested, and found to be operable. Based on this, predefines have been added to have the check valves opened and inspected on a regular basis. In addition to this, a normally closed ball valve has been added to the RCIC bed plate drain line on both units.

The previous flood path from the torus area to the RCIC bed piate now has two salves preventing flow in that direction.

1 Based on the check valve inspection frequency and the addition of the ball valves, there , i is no need to reroute the RCIC bed plate drain lines. Therefore, this system modification jg{ p will be canceled. j' (h 9ch 0 9804140211 980406 PDR ADOCK 05000265 S PDR a e icom Comnmy J

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, JJSNRC '.

SVP-98-109 2 April 6,1998 If you have any questions concerning this letter, please contact Mr. Charles Peterson, Regulatory Affairs Manager, at (309) 654-2241, extension 3609.

Respectfully, hl David Sager Site ic President Quad ties Station ec: A. B. Beach, Regional Administrator, Region 111 R. M. Pulsifer, Project Manager, NRR C. G. Miller, Senior Resident Inspector, Quad Cities W. D. Leech, MidAmerican Energy Company D. C. Tubbs, MidAmerican Energy Company F. A. Spangenberg, Regulatory AITairs Manager, Dresden INPO Records Center Oflice of Nuclear Facility Safety, IDNS DCD License (both electronic and hard copies)

M. E. Wagner, Licensing, Comed SVP Letter File i

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