ML20140H988
| ML20140H988 | |
| Person / Time | |
|---|---|
| Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
| Issue date: | 03/25/1986 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20140H966 | List: |
| References | |
| NUDOCS 8604040240 | |
| Download: ML20140H988 (1) | |
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UNITED STATES NUCLEAR REGULATORY COMMISSION o
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SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION FIRE PROTECTION PROGRAM, CONTROL ROOM UPGRADE - CARPET VERMONT YANKEE NUCLEAR POWER CORPORATION DOCKET NO. 50-271 By letter dated October 8,1985, the Vermont Yankee Nuclear Power Corporation (the licensee) requested approval for the installation of carpeting in the control room in ceder to reduce overall background noise and inprove communications between control room personnel.
In terms of the licensee's Fire Protection Program for Vermont Yankee, concerns were raised that the carpet might represent a significant fire hazard from the standpoint of overall flammability and the potential for smoke production, if ignited.
In the October 8, 1985 letter, the licensee provided the results of fire tests on the proposed carpet which demonstrated that it represents no greater fire hazard than the previously approved vinyl asbestos tile that it will cover. Specifically, the Critical Radiant Flux was determined to be 0.65 watts per square centimeter as determined by the test method in ASTM E-648, which enables the carpet to be considered as a Class I interior finish. By letter dated November 26, 1985, the licensee stated that the smoke development rating of the carpet was determined to be 168, as determined by the test method in ASTM E-84-70. This compares to a flaming smoke development of 325 for vinyl asbestos tile. We conclude that the installation of the carpet will not significantly decrease the level of fire safety in the control room, and, therefore, represents an acceptable deviation from Section C.7.b of BTP CMEB 9.5-1.
Principal Contributors:
J. Stang and V. Rooney Dated: March 25,1986 8604040240 860325 PDR ADOCK 05000271 F