Figure 3-2. Gathering the Best Available Design Requirements for The CM SSCs

DOE-STD-1073-2003

Configuration Management

One way to do this is by using engineering data recovery techniques. Data recovery

techniques include searching for and reviewing existing files, archived records, and other

sources that might contain the information, and validating the accuracy of the information

before it is used.

If the contractor determines that the data recovery techniques are still not sufficient to

adequately complete the design requirements, the contractor should consider whether the

information should be regenerated (e.g., performing analysis and/or calculations, or

interviewing technical experts who are knowledgeable about the particular equipment or

situation). If the contractor decides to pursue regeneration of the information, it should

take maximum advantage of pertinent existing safety analyses and design information

(i.e., requirements and their bases) that are immediately available or can be retrieved

through reasonable efforts. Appendix D provides general information that may be used

to regenerate documentation. The regeneration process can be expensive and should only

be pursued when it is essential to manage the configuration of the nuclear activity safely

and efficiently.

When changes are performed, the contractor must document the design requirements

associated with the change. By doing this, contractors can incrementally enhance the

information on design requirements in a cost-effective manner.

Once the design requirements are established, the configuration management process

should be used to control changes because recovery of design information at a later date

can be time consuming and costly. Figure 3-2 illustrates the potential sources for

gathering the best available design requirements for SSCs under the configuration

management process, which will be referred to as the CM SSCs throughout this standard.

Existing Design

Requirements

Best Available

Deeiggn

Dssin

New/Revised

Design

Reequrieemenss

Rqui rment t

Design Requirements

Reconstitution

Daaaabaee

Dt tbass

foorDesign

f r Design

Requirements

FIGURE 3-2 GATHERING THE BEST AVAILABLE DESIGN REQUIREMENTS FOR THE CM SSCS

3-3