Specific Application of Graded Approach: Design Reconstitution

DOESTD107393

identification of information sources, quick and simple retrieval of information, users guides, and training

for potential users.

The integration of complete, validated DISs into the normal design control, change control, and

document control programs marks the completion of the DR program.

3.7 SPECIFIC APPLICATION OF GRADED APPROACH: DESIGN

RECONSTITUTION

The DR adjunct program is the portion of the CM program most amenable to the graded approach.

The primary consideration for adjusting implementation is the SSC grade. The following DR program

activities may be adjusted in terms of SSC grades: design information searches (i.e., formal review,

smart search, and comprehensive search), regeneration of design requirements, preparation of design

information summaries, and regeneration of the design basis. The following matrix shows adjustments

to implementation based on the SSC grades.

GRADED APPROACH TO DESIGN RECONSTITUTION ACTIVITIES

System

Formal

Smart

Comprehensive

Regeneration of

Preparation of

Regeneration of

Grade

Review

Design

DISs

Design Basis

Requirements

Necessary

Recommended

Necessary

Recommended

Optional

Necessary

Recommended

Optional

Application of this matrix is based on system grade, not on the grade for individual components. The

entry "Necessary" for the comprehensive search, for example, means that all design information and

design requirements for a system of grade 1, and for the components of that system, would be

retrieved during such a search. The numerical values shown in the table for the system grades are

illustrative; system grade 1, for example, could encompass safety systems.

This matrix applies to the case in which the system grade is being applied directly to CM program

general criteria; no other graded-approach considerations (e.g., facility technical type, remaining facility

lifetime) have been applied. With the application of other graded-approach considerations, the

implementation level could be adjusted further, and this matrix would then serve as an example of

relative priorities. However, the minimum design information regenerated should be that necessary to

support the facility accident analysis and TSRs.

The DR program activities related to reconstitution of design requirements (i.e., formal review, smart

search, comprehensive search, and requirements regeneration) should be such as to ensure that the

desired/remaining facility lifetime equals or exceeds the time involved in those activities. Thus, if the

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