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Figure 2-4. Design Requirements Element: Top-Level Development Flowchart
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Chapter 2 Implementation Guidance for Operational Configuration Management
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Figure 2-5. Establishment of Design Requirements


DOE­STD­1073­93
requirements. Component grading continues this SSC grading process at the component level. The
component-level grading activity also establish the system boundaries and refines the assignment of
components to systems. The SSC grades are fed into the CM equipment database.
2.2.1 ESTABLISHMENT OF DESIGN REQUIREMENTS AND DESIGN BASIS
The top-level flowchart for establishment of the design requirements is presented in Figure 2­5. This
process involves the review of existing design requirements, as well as the addition of new and revised
design requirements through design reconstitution and the ongoing design process.
Configuration management program criterion 1.3.2.1 states that the design requirements and design
basis should be formally established, documents, and maintained. The CM program should identify the
various processes and procedures used to establish the design requirements and design basis. For new
facilities and physical changes to existing facilities, the program should ensure that procedures are in
place that adequately establish the associated design requirements and their design basis, and that
document them in a form suitable for use in the CM program. Documentation of the design
requirements includes their correlation with associated SSCs and their categorization by type (i.e.,
safety, environmental, mission, and other). Documentation of the design basis involves its correlation
with associated design requirements. Once the design requirements and design basis are established
and documented, the CM program should ensure that processes and procedures are in place to
maintain them so that they are complete and accurate.
2.2.1.1 Interim Measures for Design Requirements Element
During the development of the CM program plan, the effectiveness of existing programs and
procedures is assessed. These initial assessments may Identify cases in which the design
requirements and basis were not fully documented, not accurate, or not complete. The following are
examples of interim measures that may be needed until development of the design requirements
program element is complete:
· Additional controls to ensure that newly generated design requirements and design basis are
maintained and available
· Additional procedural guidance on sources of design requirements to ensure that an
adequate design envelope review is performed for potential facility changes
· Additional procedural guidance to ensure that designers thoroughly research the existing
design basis before issuing new designs
· Additional procedural guidance to ensure that the design process produces a complete set of
design requirements and design basis for each new design or design change (See Appendix
lI­A for more information on various design controls.)
· Actions to prevent the destruction or disposal of source documents containing design
requirements and design basis information
· Actions and controls to ensure that the knowledge of experienced engineering and operations
personnel regarding facility design requirements and design basis is not lost when they
transfer or retire; this includes actions to collect and record design information from personnel
who recently transferred, retired, or are near retirement
II-17


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