Document: NUREG-0800
Document ID: f0fdf572-145b-48ca-b0eb-03ce5f350473
Document Type: srp
Title: Nearby Facilities
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0327/ML032740044.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.6
CFR Part: 
CFR Title: 

Content:
or feature that adversely affects the ability of the system or feature to perform its intended function. Important to Safety — Nuclear power plant structures, systems, and components “important to safety” are those required to provide reasonable assurance that the facility can be operated without undue risk to the health and safety of the public. Interrupting Device — A breaker, fuse, or similar device installed in an electrical circuit to isolate the circuit (or a portion of the circuit) from the remainder of the system in the event of an overcurrent or fault downstream of the interrupting device. In situ Combustibles — Combustible materials that constitute part of the construction, fabrication, or installation of plant structures, systems, and components and as such are fixed in place. Isolation Device — A device in a circuit that prevents malfunctions in one section of a circuit from causing unacceptable influences in other sections of the circuit or other circuits. Listed — Equipment or materials included on a list published by a recognized testing laboratory, inspection agency, or other organization concerned with product evaluation that maintains periodic inspection of production of listed equipment or materials, and whose listing states that certain specific equipment or materials meet nationally recognized standards and have been tested and found suitable for use in a specified manner. Noncombustible Material — (a) Material that, in the form in which it is used and under conditions anticipated, will not ignite, burn, support combustion, or release flammable vapors when subjected to fire or heat or (b) material having a structural base of noncombustible material, with a surfacing not over 1/8 inch thick that has a flame spread rating not higher than 50 when measured in accordance with ASTM E-84, "Standard Test Method for Surface Burning Characteristics of Building Materials." Open Circuit — A failure condition that results when a circuit