Chapter 3 Implementation Guidance for Design Reconstitution

DOESTD107393

CHAPTER 3

IMPLEMENTATION GUIDANCE FOR

DESIGN RECONSTITUTION

This guidance is appropriate for high-hazard facilities expected to operate for an extended period.

Since DOE facilities vary in hazard level and circumstances of operation, a graded approach to

implementation should be adopted.

The implementation guidance is presented in the general sequence in which the design reconstitution

(DR) adjunct program is expected to be developed and implemented. Figure 31 presents the top-

level flowchart for the DR adjunct program.

3.1 PROGRAM PLANS AND PROCEDURES

3.1.1 DESIGN RECONSTITUTION PROGRAM PLAN

The DR program plan should address the topics defined in program criterion 1.3.1.1.c. It should be

prepared in accordance with direction set forth by the program management element of the CM

program. Although part of the CM program plan, the DR program plan may be provided to DOE

separately and should be developed as a stand-alone document.

The DR program plan should identify the scope of the Design Information Summaries (DISs), for both

the systems and for design topics, to be prepared. The DR program should prepare DISs for the

systems within the CM program scope. To reduce redundancy and ensure consistent application of the

topical information, the plan should identify design topics for which a separate topical DIS will be

prepared. Potential design topics include seismic qualification, fire protection, environmental protection,

electrical separation, single failure, and nuclear criticality.

The DR program plan should provide the method for prioritizing DISs. The priorities of DISs may be

based on safety significance, Technical Safety Requirements (TSRs) significance, probabilistic risk

assessments, facility modification schedules, impact on other DISs, and the specific needs of the

operating and design organizations. Highest priority should be given to those systems addressed by the

facility accident analyses or TSRs. The priorities are used to establish the order of DIS preparation.

As part of the description of each DR program activity, the DR program plan should reflect the chosen

technical approach and methods for each DR program activity. Descriptions of program activities

should demonstrate how the program functions will be accomplished. Within each activity, there are a

number of management options that can only be evaluated and selected facility by facility. Examples of

these management options are:

Selection of DIS topical areas

Detailed methodology for comprehensive search

Approach to management review to identify the missing basis

Prioritization methods for regeneration activities

Scope of regeneration activities

Approach to the selection of regeneration methods

To clarify the DR program envisioned, program plans should describe selected options. The availability

and reliability of existing design information are key in DR program planning. The need for the DR

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