Safety Structures, Systems, and Components - doe-std-1104-96

DOE-STD-1104-96

understanding of the major facility hazards. In summarizing this information the SER

does not repeat the details of the DSA assumptions or calculations. The SER may,

however, discuss essential aspects of important issues resolved during the review

process.

4.7

Safety Structures, Systems, and Components

This section documents the bases for approving the designation of safety SSCs and their

associated safety functions, functional requirements, system evaluations, and potential

TSR covera ge, including any conditions of approval imposed. Focus is on the

consistency of the logic developed in hazard and accident analyses being carried through

to the identification of safety SSCs and the definitions and descriptions provided for these

SSCs.

In addition to bases of acceptance, this SER section provides a brief synopsis of safety

SSCs and their safety functions as determined in the hazard and accident analyses. The

purpose of summarizing this information is not to recapture detailed information already

presented in the DSA. The summary provides a reader an elementary understanding of

the safety SSCs and the bases of their designation in hazard and accident analyses. The

SER may, however, discuss essential aspects of important issues resolved during the

review process.

4.8

Derivation of Technical Safety Requirements

This section documents the bases for approving the derivation of TSRs, including any

conditions of approval imposed. Such documentation focuses on the consistency of the

logic develo ped in the hazard and accident analyses and safety SSC chapters being

carried through to the derivation of TSRs. The TSRs required by 10 CFR 830.205 are

not specified in a DSA, which is only required to provide the basis of their derivation.

In addition to bases of acceptance, the SER section provides a brief synopsis of the

derivation of TSRs as a function of the hazard and accident analyses. This information is

intended for the sole purpose of providing minimal, facility-specific context for SER bases

of approval, such that an elementary understanding of the operational envelope can be

gleaned from the SER. The SER does not, however, attempt to repeat detailed

information contained in the DSA.

4.9

Safety Management Program Characteristics

This section documents the bases of approving safety management program

characteristics, including any conditions of approval imposed. These bases do not relate

to compliance with regulatory requirements, but to identification of the basic capability

and awareness of fu ndamental provisions needed for maintaining the adequacy of the

facility safety basis. This approval simply documents that the basic elements of the

institutional safety management programs depended on for ensuring facility safety basis

are adequate and that these elements can and will be implemented. A list of these

programs briefly noting their general significance to defense in depth, worker safety,

and/or dominant accident scenarios is provided, but no summary of the information from

each programmatic chapter is needed.

4.10 Technical Safety Requirements

This section documents the basis of approving the TSRs. It should be verified that all the

commitments for safety controls that are made in the DSA are carried through to TSR

provisions. Judgment needs to be exercised in the specifics of the form of TSR treatment