Introduction - doe-std-3009-94_cn3

DOE-STD -3009-94

Introduction

This introduction addresses the following major topics related to implementing the

requirements of 10 CFR 830.

Purpose of DOE-STD-3009--Indicates scope and general applicability of

this Standard.

DSA Preparation Conceptual Basis and Process Ensures consistent and

appropriate treatment of all DSA requirements for the variety of DOE

nonreactor nuclear facilities.

Hazard Analysis --Provides final facility hazard categorization and considers

and incorporates into programmatic requirements measures to protect wo rkers,

the public, and the environment from hazardous and accident conditions.

Technical Safety Requirements and safety-significant structures, systems, and

components, that are major contributors to worker safety and defense in depth,

are identified in the hazard analysis.

Accident Analysis--Designates safety-class structures, systems, and

components and safety controls (i.e., TSRs) as a function of the Evaluation

Guideline (see Appendix A).

Application of the Graded Approach--Provides a consistent and meas ured

treatment of this concept, including guidance on the minimum acceptable DSA

content.

PURPOSE OF D O E-STD -3 0 0 9

This Standard describes a DSA preparation method that is acceptable to the DOE as

delineated for those specific facilities listed in Table 2 of Appendix A, "General Statement

of Safety Basis Policy", to Subpart B, "Safety Basis Requirements", of 10 CFR 830. It

was developed to assist Hazard Category 2 and 3 facilities in preparing SARs that will

satisfy the requirements of 10 CFR 830. Hazard Category 1 facilities are typically

expected to be Category A reactors for which extensive precedents for SARs already exist.

Guidance provided by this Standard is generally applicable to any facility required to

document its safety basis in accordance with 10 CFR 830. For new facilities in which

conceptual design or construction activities are in progress [i.e., Preliminary Documented

Safety Analysis (PDSAs)] elements of this guidance may be more appropriately handled

as an integral part of the overall des ign requirements process (e.g., preliminary design to

design criteria). The methodology provided by this Standard focuses more on

characterizing facility safety (i.e., back-end approach) with or without well-documented

information than on the determinatio n of facility design (i.e., front end approach).

Accordingly, contractors for facilities that are documenting conceptual designs for PDSAs

should apply the process and format of this Standard to the extent it is judged to be of

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