ML20066E985

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Clarifies Procedures Implemented to Assure Safe Operation of once-through Steam Generator Blowdown Lines Until Refuel V.Concurrence to Maintain Lines in High Energy Line State During Each Startup & Shutdown Until Refuel V Requested
ML20066E985
Person / Time
Site: Crystal River Duke Energy icon.png
Issue date: 11/08/1982
From: Baynard P
FLORIDA POWER CORP.
To: Stolz J
Office of Nuclear Reactor Regulation
References
3F-1182-02, 3F-1182-2, TAC-48977, NUDOCS 8211170359
Download: ML20066E985 (2)


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Mr. John F. Stolz, Chief 6 d Operating Reactors Branch #4

  • Division of Licensing u U.S. Nuclear Regulatory Commission #

Washington, D.C. 20555 -

Subject:

Crystal River Unit 3 Docket No. 50-302 Operating License No. DPR-72 LER 82-053, High Energy Line

Dear Mr. Stolz:

In our letter to you dated October 22, 1982, Florida Power Corporation (FPC) outlined plans for operation of the Once Through Steam Generator (OTSG) blowdown lines until Refuel V. In response to your telephone request, this letter provides further clarification of the procedures which have been implemented to assure safe operation of these blowdown lines.

Operating Procedure OP-202, Plant Heatup, has been modified to include a reminder to the plant operator that OTSG blowdown line isolation valves must be closed within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after reacNag 15% RATED THERMAL POWER. Operating Procedure OP-204, Power Operation, has been modified to require that these valves be closed within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> l af ter reaching 15% RATED THERMAL POWER. Appropriate Valve Check Lists have been l included in the procedure to provide documented evidence of valve closure.

Additionally, OP-209, Plant Cooldown, has been modified to allow (but not require) reopening of the valves when the average coolant temperature has been brought below 3000F to assist the plant in continuing cooldown before transferring to the decay heat I

removal system mode of operation. Crystal River Unit 3 goes below 3000F when it is going to COLD SHUTDOWN (< 2000F); therefore, the time spent in this confid uration is i very short.

I lbp'd S s-Q 8211170399 821108 PDR ADOCK 05000302

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General Office 320i thuty fourtn street soutn . P O Box 14042. St. Petersburg, Florgsa 33733 e 813-866-5151

fa D Mr. John F. Stolz

  1. 3F-1182-02 Page 2 Based on these actions 'and the reasons presented in our letter of October 22,1982, FPC requests NRC concurrence to maintain these lines in a High Energy Line state during each i startup and shutdown of Crystal River Unit 3 until Refuel V.
Very truly yours, 4 -

d ' h a r.c l Dr. Patsy Y. Baynard Assistant to Vice President

! Nuclear Operations AEF:mm _

cc: Mr. 3. P. O'Reilly, Regional Administrator Office of Inspection & Enforcement U.S. Nuclear Regulatory Commission 101 Marietta Street N.W., Suite 3100 Atlanta, GA 30303 J

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