ML19344E033
| ML19344E033 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 08/22/1980 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | Schwencer A Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8008260538 | |
| Download: ML19344E033 (2) | |
Text
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TENNESSEE VALLEY AUTHORITY CH ATTANCOGA. TENNESSEE 37401 1800 Chestnut Street Tower II August 22, 1980 Director of Nuclear Reactor Regulation Attention: Mr. A. Schwencer, Chief Licensing Branch No. 2 ,
Division of Licensing U.S. Nuclear Regulatory Commission Washington, DC 20555
Dear Mr. Schwencer:
In the Matter of the Application of ) Docket No. 50-327 Tennessee Valley Authority )
Enclosed is the information requested by the ACRS with respect to the systems which remain operable during Special Test 7, Si=ulated Loss of All AC Power.
Very truly yours, TENNESSEE VALLEY AUTHORITY L. M. Mills, ager Nuclear Regulat on and Safety Enclosure 3 o>l s
/// 1 800sseo / n Eaual Oc::ortunity Errpioyer Q
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ENCLOSURE
, SEQUOYAH NUCLEAR PLANT UNIT 1 ACRS QUESTION ON SPECIAL TEST 7 4
Question What systems remain operable during Special Test 7 - Simulated Loss of All
. AC Power?
Response
The following systems wh' ch are operable during Special Test 7 would not be operable in a loss of all AC power condition. This list is not all inclusive but does consider those major systems which could effect plant conditions.
- 1. Component Cooling System supplying cooling water to the Reactor Coolant Pump (RCP) thermal barriers and normal auxiliary building loads.
- 2. RCP seal injection l' low. from the Chemical and Volume Control System (CVCS). Normal charging is isolated.
- 3. All containment ventilation systems including upper and lower con-tainment ecolers and control rod drive mechanism coolers along with 1 their Emergency Raw Cooling Water (ERCW) supply.
- 4. Control Air System supply to all plant equipment except the Turbine Driven Auxiliary Feedwater Pump Slow control valves (which regulates
- flow to each steam generator) and the Secam Cencrator Power Operated Relief Valves. All other valves will be posiciancd to simulate a loss of all AC power condition.
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- l. S. All auxiliary building ventilation which would supply areas where beat
- loads would not exist under loss of all AC power conditions (i.e., CVCS pump rooms). Areas which would carry a heac load in a loss of all AC pcwer condition will have their ventilation shut off during the test (i.e., Turbine Driven Auxiliary Feedpump room).
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