ML19309G996
| ML19309G996 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 04/15/1980 |
| From: | Ippolito T Office of Nuclear Reactor Regulation |
| To: | Rich Smith VERMONT YANKEE NUCLEAR POWER CORP. |
| References | |
| NUDOCS 8005080130 | |
| Download: ML19309G996 (5) | |
Text
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Io UNITED STATES g
g NUCLEAR REGULATORY COMMISSION y
E WASHINGTON, D. C. 20555 o
April 15,1930 Docket No. 50-271 Mr. Robert L. Smith Licensing Engineer Vermont Yankee Nuclear Power Corporation 25 Research Drive Westboro, Massachusetts 01581
Dear Mr. Smith:
We have prepared a Safety Evaluation which reflects our review of your fire protection submittals dated August 14, 1978, September 14, 1979, and January 17, 1980. This evaluation identifies three additional areas of your program that are not acceptable, namely:
3.1.4 - Water Suppression Systems, 3.1.14 - Air Breathing Apparatus, and 3.2.3 - Fire Water Loop.
Items 3.1.6 - Gas Suppression Systems and 3.1.13 - Portable Ventilation Equipment are acceptatie.
Please inform us within 30 days of receipt of this letter of your commit-ment or non-coninitment to the Staff positions expressed in Sections 3.1.4, 3.1.14, and 3.2.3 of the enclosed Safety Evaluation.
Sincerel,
m~
l Thomas A. Ippolito, Chief Operating Reactors Branch #3 Division of Operating Reactors
Enclosure:
Safety Evaluation cc w/ enclosure:
See next page l
Mr. Robert L. Smith April 15,1980 cc:
Ms. J. M. Abbey John R. Stanton, Director Vermont Yankee Nuclear Power Radiation Control Agency Corporation Hazen Drive 77 Grove Street Concord, New Hampshire 03301 Rutland, Vermont 05701 John W. Stevens Mr. Louis H. Heider, Conservation Society of Vice President Southern Vermont Vermont Yankee Nuclear Power P. O. Box 256 Corporation Townshend, Vermont 05353 25 Research Drive Westboro, Massachusetts 01581 Dr. Mars Longley, Director Occupational & Radiological Health John A. Ritsher, Escuire 10 Baldwin Street Ropes & Gray Montpelier, Vermont 05602 225 Franklin Street Boston, Massachusetts 02110 New England Coalition on Nuclear Pollution Laurie Burt Hill and Dale Farm Assistant Attorney, General West Hill - Faraway Road Environmental Protection Division Putney, Vermont 05346 Attorney General's Office One Ashburton Place, 19th Floor Public Service Board Boston Massachusetts 02108 State of Vermont 120 State Street Ronald J. Wilson Montpelier, Vermont 05602 810 18th Street, N. W.
Suite 802 W. P. Murphy, Plant Superintendent Washington, D. C.
20006 Vermont Yankee Nuclear Power Corporation Honorable M. Jerome Diamond P. O. Box 157 Attorney General Vernon, Vermont 05354 State of Vermont 109 State Street Mr. Charles Sheketoff Pavilion Office Building Assistant Director Montpelier, Vermont 05602 Vermont Public Interest Research Group, Inc.
Mr. J. E. Griffin, President 26 State Street Vermont Yankee Nuclear Power Montpelier, Vermont 05602 Corporation 77 Grove Street Brooks Memorial Library Rutland, Vermont 05701 224 Main Street Brattleboro, Vermont 05301 l
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VERMONT YANKEE FIRE PROTECTION REVIEW EVALUATION OF DESIGN DETAILS AND INCOMPLETE ITEMS L
i Design Details 3.1.4 Water Suppression Systems Cable Penetration Area e
(a) We will require an independent fire water feed for the preaction system protecting the cable penetration area to preclude a single failure from affecting both the hose station and the automatic system.
(b) We will require that actuation of the preaction system be accomplished by smoke detectors which are responsive to cable fires.
Turbine Laydown Area (a) We will require an early warning detection system for actuation of the deluge system protecting the turbine laydown area.
This detection shall be designed to detect the entire spectrum of fires as appropriate to the types of combustibles in the area.
Diesel Fire Pumo Sorinkler System (a) We will require a water flow switch with annunciation and alarm in the control room so that operators will know that the system has actuated.
(b) We will require that the feed for the system be on the system side of the pump isolation valve so that the sprinkler system will not be disabled during maintenance on the diesel fire pump.
3.1.6 Gas Suppression System l
Cable Soreading Room We find this system acceptable.
Switchgear Room We find this system acceptable.
l l
- Diesel Fire Puma Day Tank Room We find this system acceptable.
3.1.14 Air Breathina Apparatus Our requirements for aii 5reathing apparatus are stated in paragraph D.4.(h) of Append'
- ta "-anch Technical Position APCSB 9.5-1 " Guidelines for F1rc
..ution for Nuclear Power Plants Docketed Prior to July i,1976."
This document requires 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> of breathing air for fire brigade, damage control and control room personnel.
Our SER noted that the capability to maint,ain a supply of breathing air for a fire emergency use would be upgraded to cover a minimum time interval of 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and that self contained breathing apparatus would be placed for ready access by control room personnel.
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The licensee has indicated that the plant has two types of units.
One type consisting of 1/2 hour scott-paks with a total supply of one hour for three men at the control room.
The other type units are BioPak 60 p's with a supply of 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> of air for five fire brigade personnei located centrally in the plant.
Air supply tanks for these two units are not interchangeable.
Therefore, we will require that an additional five hour air supply be provided for the self contained breathing apparatus units furnished for control room personnel.
3.2.3 Fire Water Looo We will require that the fire mains which feed the yard loop and which are in close proximity be separated by a minimum distance of 25 feet as specified in ANS/ ANSI standard 59.4.
3.1.13 Portable Ventilation Equipment Our SER noted that portable ventilation equipnent would be provided and procedures would be developed for its use by the fire brigade so that smoke could be vented from enclosed areas to permit access for manual fire fighting.
By letter dated August 14, 1978, the licensee indicated that six model P164SE Super Vac Fans, 16", 5200 CFM each, had been purchased. These units would be stored as follows: (a) two in the torus area, (b) two on the 280' elevation of the reactor building, and (c) two at the foam station in the Turbine Building.
3-We have evaluated the capacity and placement of the portable smoke equipment and we find the equipment provided is
- cceptable.
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