ML20070V494

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Provides Further Clarification of Util 820309 & 0716 Responses to Question 12.b Per Telcon Request Re Item II.B.1.Piping & Valving Routed,Oriented & Protected from Pipe Whip,Jet Impingement Damage
ML20070V494
Person / Time
Site: Crystal River Duke Energy icon.png
Issue date: 02/14/1983
From: Westafer G
FLORIDA POWER CORP.
To: Stolz J
Office of Nuclear Reactor Regulation
References
RTR-NUREG-0737, RTR-NUREG-737, TASK-2.B.1, TASK-TM 3F-0283-12, 3F-283-12, NUDOCS 8302170370
Download: ML20070V494 (1)


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Power ConPOmatsON February 14,1983 3F-0283-12 Director of Nuclear Reactor Regulation Attention: Mr. John F. Stolz, Chief Operating Reactors Branch No. 4 Division of Licensing U.S. Nuclear Regulatory Commission Washington, D.C. 20555

Subject:

Crystal River Unit 3 Docket No. 50-302 Operating License No. DPR-72 NUREG-0737, Item II.B.1 Reactor Coolant System Vents

Dear Sir:

On March 9,1982 and July 16, 1982, Florida Power Corporation (FPC) provided the additional information requested in your lett?r dated January 19, 1982.

In a subsequent telephone conference, your staff requested further clarification of our response to your Question 12.b.

The original response to Question 12.b stated, "The design considerations for this system did not take into account postulating a missile generated by failure of the high (point) vent system components, since piping and solenoid operated valves are secured by seismically qualified restraints." The basis of this response is that the piping and valving is routed, oriented, and protected so that damage from pipe whip, jet impingement, and ni.ssiles will not occur to the High Point Vent System. A missile due to High Point Vent System isolation valve failure has been postulated and it was found that under no circumstances will the valve stem assembly damage any equipment or structures essential to safe plant shutdown.

This completes our clarification of our response to Question 12.b.

Sincerely,

/

G. R. Westafer Manager ggo-Nuclear Licensing and Fuel Management OO TSW:mm mu)o o

cc:

Mr. 3. P. O'Reilly, Regional Administrator-Office of Inspection & Enforcement IOM R8 U.S. Nuclear Regulatory Commission Ii 101 Marietta Street N.W., Suite 3100 l Oa:

Atlanta, GA 30303

@h General Office 3201 inirty uurth street souin. P O Box 14042. St Petersburg. Flonda 33733 813-866-5151