Glossary - s1073pt10011

Aging. The general process in which characteristics of structures, systems, and components gradually

change with time or use.

Aging Degradation. Aging effects that could impair the ability of structures, systems, and components to

meet their design requirements.

Aging Effects. Net changes in characteristics of structures, systems, and components that occur with

time or use and are due to aging mechanisms.

Aging Mechanism. The specific process that gradually changes characteristics of structures, systems,

and components with time or use.

As-Built. Documentation (for example, Piping and Instrument Diagrams, and database records) verified

by physical inspection as depicting the actual physical configuration and verified as consistent with

the design requirements.

As-Building Process. The process of determining the as-found condition, resolving discrepancies,

obtaining approval from the design authority, and producing the as-built documentation.

As-Found. Information, often in the form of marked-up documents, that reflects the actual physical

configuration and identifies any discrepancies with currently-approved facility documentation.

Assessment. For engineering applications, the process of estimating the value of something using

authoritative expert judgement based upon observations of representative cases and rough

calculations, rather than determining the exact value based upon comprehensive and detailed

examinations, and precise and rigorous complete calculations.

Assessment Element. A CM program element that encompasses the following functions: conducting

programmatic assessments; conducting physical configuration assessments; performing periodic

equipment performance monitoring; and performing post-modification testing.

Authorization Basis. Those aspects of the facility design basis relied on by DOE to authorize operation.

These aspects are considered to be important to the safety of facility operations. The authorization

basis is described in documents such as the facility Safety Analysis Report and other safety

analyses, hazard classification documents, the Technical Safety Requirements, DOE-issued safety

evaluation reports, and facility-specific commitments made in order to satisfy DOE Orders or

policies. The authorization basis is an important subset of the design basis.

Change. Any alteration or addition, temporary or permanent, to the facility physical configuration, facility

documentation, or design requirements. Changes not within current design requirements involve

design changes. Identical replacements are not changes.

Change Control. A process that ensures all changes are properly identified, reviewed, approved,

implemented, tested, and documented.

Change Control Element. A CM program element that encompasses the following functions: identifying

changes, performing technical review of changes, performing management review of changes,

implementing changes, and documenting changes.

Comprehensive Search. A process through which a broad spectrum of documents that may contain

design information are identified, retrieved, and evaluated. Key steps involve locating and screening

documents that may contain design information and reviewing them to extract design information.