Document: 10 CFR Part 72
Document ID: 7f0e4fcb-5279-47e0-bb28-e7cea02a3a09
Document Type: cfr
Title: Definitions.
Source: 10 CFR Part 72
Source URL: https://www.ecfr.gov/current/title-10/part-72/section-72.3
Revision Date: 
Chapter: 
Section ID: 72.3
CFR Part: 72
CFR Title: 10

Content:
suitability of the site or to the protection of environmental values; ( 2 ) Construction of environmental monitoring facilities; ( 3 ) Procurement or manufacture of components of the installation; or ( 4 ) Construction of means of access to the site as may be necessary to accomplish the objectives of paragraphs (1) and (2) of this definition. Commission means the Nuclear Regulatory Commission or its duly authorized representatives. Confinement systems means those systems, including ventilation, that act as barriers between areas containing radioactive substances and the environment. Controlled area means that area immediately surrounding an ISFSI or MRS for which the licensee exercises authority over its use and within which ISFSI or MRS operations are performed. Decommission means to remove a facility or site safely from service and reduce residual radioactivity to a level that permits— ( 1 ) Release of the property for unrestricted use and termination of the license; or ( 2 ) Release of the property under restricted conditions and termination of the license. Design bases means that information that identifies the specific functions to be performed by a structure, system, or component of a facility or of a spent fuel storage cask and the specific values or ranges of values chosen for controlling parameters as reference bounds for design. These values may be restraints derived from generally accepted state-of-the-art practices for achieving functional goals or requirements derived from analysis (based on calculation or experiments) of the effects of a postulated event under which a structure, system, or component must meet its functional goals. The values for controlling parameters for external events include— ( 1 ) Estimates of severe natural events to be used for deriving design bases that will be based on consideration of historical data on the associated parameters, physical data, or analysis of upper limits of the physical processes involved; and ( 2 )