ML20065N117

Special Rept:On 940125,unplanned Reactor Trip & ECCS Actuation & Injection Into RCS Occurred.Total Accumulated Actuation Cycles for Four High Head Injection Lines Is Three

ML20065N117
Person / Time
Site:	Seabrook
Issue date:	04/25/1994
From:	Feigenbaum T NORTH ATLANTIC ENERGY SERVICE CORP. (NAESCO)
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NYN-940408, NUDOCS 9404270027
Download: ML20065N117 (2)

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Nordi North Atlantic Energy Service Corporation a0.0 300 J $s Adantic Seahmok, NH 03874 (603) 474 9 Fat, Fnx (603) 474 2987 The Northeaat Utilities System Ted C. Feigenbaurn NYN- 94048 Senmr Vice President 8.

Chief Nuclear Officer April 25,1994 Unuct atates Nuclear Regulatory Commission Washington, D.C. 20555 Attention: Document Control Desk 1(elerences: (a) Facility Operating License NPF-86, Docket No. 50-443 (b) North Atlantic Letter NYN-94019, dated February 24,1994, " Licensee Event Report No. 94-01-00: Reactor Trip and Safety Injection Due to inadvertent MSIV Closure", T. C. Feigenbaum to NRC (c) North Atlantic 1.etter NYN-94029, dated March 25,1994, " Licensee Event Report .

No. 94-01-01: Ikactor Trip and Safety Injection Due to Inadvertent MSIV Closure", T. C. Feigenbaum to NRC

Subject:

Special Report, ECCS Actuation and injection into RCS Gentlemen:

Seabrook Station experienced an unplanned reactor trip and Emergency Core, Cooling System (ECCS) actuation and injection into the Reactor Coolant System on January 25,1994. North Atlantic Energy Service Corporation (North Atlantic) submitted Licensee Event Report 94-01 on February 24, 1994, [ Reference (b)] describing the circumstanos of this event. A supplement to LER 94-01 was submitted on March 25,1994 [ Reference (c)). The injection of water into the RCS was via the Refueling Water Storage Tank to the centrifugal charging pumps into the four high head charging lines which enter the four RCS cold legs.

North Atlantic hereby reports pursuam to Technical Specification 3/4.5.2, ACT10N b., that the total accumulated actuation cycles for the four high head injection lines is three. This total includes the January 25,1994 event and two occasions during preoperational testing in November 1985.

Should you hase any questions regarding this letter, please contact Mr. James M. Peschel, - i Regulatory Compliance Manager, at (603) 474-9521 extension 3772.

Very truly yours, ,

led C. Fe.igenbaum g

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United Stat 6 Nuclear Regulatory Commission April 25,1994 Attention: Document Control Desk Page two cc: Mr. Thomas T. Martin Regional Administrator United States Nuclear Regt.latory Commission  !

Region i 475 Allendale Road l King of Prussia, PA 19406 Mr. Albert W. De Agazio, Sr. Project Manager Project Directorate I-4 Division of Reactor Projects U.S. Nuclear Regulatory Commission Washington, DC 20555 t

l- Mr. Antone C. Cerne l NRC Senior Resident inspector l P.O. Box i149 Seabrook, Nil 03874 l

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