ML17059A334

Ack Receipt of Utils Responses & 940531 to NRC Bulletin 93-02,suppl 1, Debris Plugging of Emergency Core Cooling Suction Strainers

ML17059A334
Person / Time
Site:	Nine Mile Point
Issue date:	06/09/1994
From:	Brinkman D Office of Nuclear Reactor Regulation
To:	Sylvia B NIAGARA MOHAWK POWER CORP.
References
IEB-93-002, IEB-93-2, TAC-M89299, NUDOCS 9406160083
Download: ML17059A334 (6)

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Docket No. 50-220 UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 June 9, 1994 Hr. B. Ralph Sylvia Executive Vice President, Nuclear Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station P.O.

Box 63

Lycoming, New York 13093

SUBJECT:

NINE MILE POINT NUCLEAR STATION UNIT NO.

1

RESPONSE

TO NRC'ULLETIN 93-02, SUPPLEHENT 1, "DEBRIS PLUGGING OF EMERGENCY CORE COOLING SUCTION STRAINERS" (TAC NO. H89299)

This letter acknowledges receipt of Niagara Hohawk Power Corporation's (NHPC's) responses dated April 18,

1994, and Hay 31, 1994, for Nine Nile Point Nuclear Station Unit No.

1 to NRC Bulletin 93-02, Supplement 1 (Bulletin).

The Bulletin was issued February 18, 1994, for action to all Boiling Water Reactor (BWR) licensees and for information to all Pressurized Water Reactor (PWR) licensees.

The purpose of the Bulletin was to inform BWR and PWR licensees about the vulnerability of ECCS suction str ainers in BWRs and containment sumps in PWRs to clogging during the recirculation phase of a loss-of-coolant accident (LOCA), to request that BWR licensees take the appropriate actions to ensure reliability of the ECCS in view of the information discussed in this bulletin supplement, and to require that BWR licensees report to the NRC on the requested actions taken.

The April 18,

1994, response addressed the actions NHPC was taking to assure the operability of ECCS recirculation.

The May 31,

1994, response confirmed completion of the planned actions.

Please retain any records of NHPC's actions in response to this Bulletin, as subsequent inspection activities may be conducted in regard to this issue.

Please contact me at (301) 504-1409 if you have any questions regarding this issue.

All NRC staff activities related to TAC No. H89299 are considered complete.

Sincerely, 900bib00 o 0220 PDR ADQCK P

cc:

See next page Donald S.

Brinkman, Senior Project Manager Project Directorate I-1 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation

Hr. B. Ralph Sylvia Niagara Mohawk Power Corporation Nine Nile Point Nuclear Station Unit No.

1 CC:

Hark J. Wetterhahn, Esquire Winston L Strawn 1400 L Street, NW Washington, DC 20005-3502 Supervisor Town of Scriba Route 8, Box 382

Oswego, New York 13126 Hr. Louis F. Storz Vice President Nuclear Generation Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station P.O.

Box 63

Lycoming, New York 13093

. Resident Inspector U.S. Nuclear Regulatory Commission P.O.

Box 126

Lycoming, New York 13093 Gary D. Wilson, Esquire Niagara Mohawk Power Corporation 300 Erie Boulevard West

Syracuse, New York 13202 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, Pennsylvania 19406 Hs.

Donna Ross New York State Energy Office 2 Empire State Plaza 16th Floor

Albany, New York 12223 Hr. Richard B. Abbott Unit 1 Plant Manager Nine Mile Point Nuclear Station P.O.

Box 63

Lycoming, New York 13093 Hr. David K. Greene Hanager Licensing Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station P.O.

Box 63,

Lycoming, New York 13093 Charles Donaldson, Esquire Assistant Attorney General New York Department of Law 120 Broadway New York, New York 10271 Hr. Paul D.

Eddy State of New York Department of Public Service Power Division, System Operations 3 Empire State Plaza

Albany, New York 12223 Hr. Martin J. HcCormick, Jr.

Vice President Nuclear Safety Assessment and Support Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station P.O.

Box 63

Lycoming, New York 13093

Docket No. 50-220 a

e June 9, j.994 Hr. B. Ral'ph Sylvia Executive Vice President, Nuclear Niagara Mohawk Power Corporation Nine Mile Point Nuclear Station P.O.

Box 63

Lycoming, New York 13093

SUBJECT:

NINE MILE POINT NUCLEAR STATION UNIT NO.

1

RESPONSE

TO NRC BULLETIN 93-02, SUPPLEMENT 1, "DEBRIS PLUGGING OF EMERGENCY CORE COOLING SUCTION STRAINERS" (TAC NO. H89299)

This letter acknowledges receipt of Niagara Mohawk Power Corporation's (NMPC's) responses dated April 18,

1994, and Hay 31, 1994, for Nine Mile Point Nuclear Station Unit No.

1 to NRC Bulletin 93-02, Supplement 1 (Bulletin).

The Bulletin was issued February 18, 1994, for action to all Boiling Water Reactor (BWR) licensees and for information to all Pressurized Water Reactor (PWR) licensees.

The purpose of the Bulletin was to inform BWR and PWR licensees about the vulnerability of ECCS suction strainers in BWRs and'ontainment sumps in PWRs to clogging during the recirculation phase of a loss-of-coolant accident (LOCA), to request that BWR licensees take the appropriate actions to ensure reliability of the ECCS in view of the information discussed in this bulletin supplement, and to require that BWR licensees report to the NRC on the requested actions taken.

The April 18,

1994, response addressed the actions NMPC was taking to assure the operability of ECCS recirculation.

The Hay 31,

1994, response confirmed completion of the planned actions.

Please retain any records of NHPC's actions in response to this Bulletin,. as subsequent inspection activities may be conducted in regard to this issue.

Please contact me at (301) 504-1409 if you have any questions regarding this issue.

All NRC staff activities related to TAC No. H89299 are considered complete.

Sincerely, Original signed by:

Donald S. Brinkman, Senior Project Manager Project Directorate I-1 Division of Reactor Projects I/II Office of Nuclear Reactor Regulation cc:

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