ML20029C405

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Informs of NRC Issuance of Info Notice 91-022, Four Plant Outage Events Involving Loss of AC Power or Coolant Spills, Addressing Events Occurring During Shutdown Operations. Loss of DHR During Shutdown Is Source of Concern to NRC
ML20029C405
Person / Time
Site: Yankee Rowe
Issue date: 03/21/1991
From: Murley T
Office of Nuclear Reactor Regulation
To: Thayer J
YANKEE ATOMIC ELECTRIC CO.
References
IEIN-91-022, IEIN-91-22, NUDOCS 9103270376
Download: ML20029C405 (3)


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Docket No.50-029 M R 21 1991 Mr. Jay K. Thayer, Vice President and Manager of Operations Yankee Atomic Electric Company 580 Main Street Bolton, Massachusetts 01740 1398

Dear Mr. Thayer:

SUBJECT:

OPERATIONAL EVEtiTS WHILE SilUTDOWN The NRC has just issued Information tiotice 91-22, "Four Plent Outage Events Involving Loss of AC Power or Coolant Spills," which addresses recent events that occurred during shutdown operations.

The chief purpose of this information notice is to notify each licensee that

'the high rate of precursor events to loss of decay heat removal during shutdown is a source of concern to the NRC. All of the events discussed in this information notice occurred during a one-week period in March 1991. Because of the potential for loss lf a critical safety function in these and similar events, I believe a high level of management attention it required in the planning, coordination, and execution of shutdown operations.

While this information notice does not require specific licensee action or response, I urge you to give this important matter your personal attention.

Sincerely, Original signed by, ThomasE. Earley Thomas E. Murley, Director Office of Nuclear Reactor Reculation

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. Document Name: LTR TO YANKEE ATOMIC 9103270376 910321 PDR ADOCK 05000029 g

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Dr. Andrew C. Kadak, President Mr. Jay K. Thayer and Chief Executive Officer Vice President And Manager Yankee Atomic Electric Company of Operations 580 Main Street Yankee Atomic Electric Company Bolton, Massachusetts 01740-1398 580 Main Street Bolton, Massachusetts 01740-1398 Thomas Dignan, Esquire Ropes and Gray Mr. David Rodham, Director 225 FranCin Street Massachusetts Civil Defense Agency Boston, Massachusetts 02110 400 Worcester Road P.O. Box 1496 Mr. N. N. St. Laurent Framingham, Massachusetts 01701-0317 Plant Superintendent ATTH:

James Muckerheide Yankee Atomic Electric Company Star Route Mr. Georne Papanic, Jr.

Rowe, Massachusetts 01367 Senior P'roject Engineer - Licensinn Yankee Atomic Electric Comnany Resident Inspector 580 Majn Street Yankee Nuclear Power Station Bolton, Massachusetts.01740-1398 U.S. Nuclear Regulatory Commission Post Office Box 28 Monroe Bridge, Massachusetts 01350 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, Pennsylvania 19406 Robert M. Hallisey, Director Radiation Control Program Massachusetts Department of Public Health 150 Tremont Street, 7th Floor Boston, Massachusetts 02111 Ms. Louise McCarren Commissioner Vermont Department of Public Service 120 State Street, 3rd Floor Montpelier, Vermont 05602 Ms. Jane M. Grant Senior Engineer - License Renewal Yankee Atomic Electric Company 580 Main Street Bolton, Massachusetts 01740-1398

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Distribution:

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E. Greenman M. Rushbrook P. Sears OGC E. Jordan ACR$ (10)

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