Document: NUREG-0800
Document ID: 16c1145e-ffe2-48c4-bd44-0ccaeb83dc99
Document Type: srp
Title: FIRE PROTECTION PROGRAM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070563.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.5.1
CFR Part: 
CFR Title: 

Content:
rior finishes should be non-combustible. Materials that are acceptable for use as interior finish without evidence of test and listing by a nationally recognized laboratory are the following: Plaster, acoustic plaster, gypsum plasterboard (gypsum wallboard), either plain, wallpapered, or painted with oil- or water-base paint; Ceramic tile, ceramic panels; Glass, glass blocks; Brick, stone, concrete blocks, plain or painted; Steel and aluminum panels, plain, painted, or enameled; Vinyl tile, vinyl-asbestos tile, linoleum, or asphalt tile on concrete floors. (1011) Metal deck roof construction should be noncombustible and listed as "acceptable for fire" in the UL Building Materials Directory (Reference 64) , or listed as Class I in the 145 Factory Mutual System Approval Guide (Reference 60) . 146 (1112) Suspended ceiling and their supports should be of noncombustible construction. Concealed spaces should be devoid of combustibles except as noted in Position C.6.b. (1213) Transformers installed inside fire areas containing safety-related systems should be of the dry type or insulated and cooled with noncombustible liquid. Transformers filled with combustible fluid that are located indoors should be enclosed in a transformer vault (see Section 450(c) of NFPA 70 [Reference 23] , "National Electrical Code" ). 147 148 (1314) Outdoor oil-filled transformers should have oil spill confinement features or drainage away from the buildings. Such transformers should be located at least 15.2 m (50 feet)149 9.5.1-39 DRAFT Rev. 4 - April 1996 distant from the building, or by ensuring that such building walls within 15.2 m (50 feet) of oil-filled transformers are without openings and have a fire resistance rating of 150 at least 3 hours. (1415) Floor drains sized to remove expected firefighting waterflow without flooding safety-related equipment should be provided in those areas where fixed water fire suppression systems are installed. Floor drains should also be provided in other