ML19350E597

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Forwards Response to Item I.G.1 of NRC Action Plan Re Training Program During Low Power Test Program & Testing to Demonstrate Time Required to Stabilize Natural Circulation
ML19350E597
Person / Time
Site: Comanche Peak  Luminant icon.png
Issue date: 06/18/1981
From: John Marshall
TEXAS UTILITIES SERVICES, INC.
To: Burwell S
Office of Nuclear Reactor Regulation
References
TXX-3337, NUDOCS 8106230323
Download: ML19350E597 (2)


Text

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TEXAS UTILITIES SERVICES INC.

200 nava.s rowen o^uaarexas ts20:

p% l l337 June 18, 1981 s Mr. Spottswood Burwell U. S. Nuclear Regulatory Comission Licensing Project Manager Office of Nuclear Reactor Regulation.

Washington, D.C. 20555

SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STATION DOCKET NOS. 50-445 & 50-446 RESPONSE TO ITEM I.G.1 0F NRC ACTION PLAN

Dear Mr. Burwell:

Attached is the response to Item I.G.1 of the NRC Action Plan. If you have any questions or coments, please call this office.

Sincerely, J. S. Marshall RWH: tis Attachment 9

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i CPSES/FSAR RESPONSE TO NRC ACTION PIAN ITEM I.G.I' A training program during the low-power test program will be developed to supplement operator training. This program will demonstrate the length of time required to stabilize natural circulation, reactor coolant flow, and operator ability to establish and maintain natural circulation. Each licensed operator will experience by direct observation the initiation, maintenance and recovery from natural circulation conditions using nuclear heat to simulate decay heat. Furthermore, operators will be trained to recognize when natural circula-tion has stabilized and to control saturation margin, reactor coolant system pressure, and heat removal rate without exceeding specified operating limits.

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Testing to demonstrate the length of time required to stabilize natural circulation, core flow distribution, ability to establish and maintain natural circulation with or without -

onsite and of fsite power, the ability to uniformly borate and cool down to hot shutdown conditions using natural circu-lati'on, and subcooling monitor performance have been performed at the Sequoyah i and Salem 2 facilities, which are comparable prototype plants, and will not be performed at CPSES.

A description of the natural circulation demonstrations that are to be conducted as part of the training program during the low-power test program will be included in the CPSES FSAR (Chapter 14 - Initial Test Program).

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