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:
barriers having a minimum fire resistance rating of 3 hours. Automatic fire suppression should be installed to combat any diesel generator or lubricating oil fires; such systems should be designed for operation when the diesel is running without affecting the diesel. Automatic fire detection should be provided to alarm and annunciate in the control room and alarm locally. Hose stations and portable extinguishers should be readily available outside the area. Drainage for firefighting water and means for local manual venting of smoke should be provided. Day tanks with total capacity up to 4164 L (1100 gallons) are permitted in the diesel generator 247 area under the following conditions: (1) The day tank is located in a separate enclosure with a minimum fire resistance rating of 3 hours, including doors or penetrations. These enclosures should be capable of containing the entire contents of the day tanks and should be protected by an automatic fire suppression system, or (2) The day tank is located inside the diesel generator room in a diked enclosure that has sufficient capacity to hold 110% of the contents of the day tank or is drained to a safe location. j. Diesel Fuel Oil Storage Areas Diesel fuel oil tanks with a capacity greater than 4164 L (1,100 gallons) should not be located 248 inside buildings containing safety-related equipment. If above-ground tanks are used, they should be located at least 15.2 m (50 feet) from any building containing safety-related 249 equipment or, if located within 15.2 m (50 feet) , they should be housed in a separate building 250 with construction having a minimum fire resistance rating of 3 hours. Potential oil spills should 9.5.1-59 DRAFT Rev. 4 - April 1996 be confined or directed away from buildings containing safety-related equipment. Totally buried tanks are acceptable outside or under buildings (see NFPA 30, "Flammable and Combustible Liquids Code," for additional guidance). 251 Above-ground tanks should be protected by an