A P P L I C A T I O N O F T H E G R A D E D A P P R O A C H . Discussion is limited to
those areas in which human performance plays an important role in ensuring the
performance of safety SSCs. The preparer of the DSA will present information at a level
that is considered sufficient for the review and approval of the DSA.
Hazard Category 2 facilities may have human- machine interfaces with safety-class SSCs
and safety-significant SSCs. Hazard Category 3 facilities do not have safety-class SSCs
but may have human- machine interfaces with safety-significant SSCs. Discussions
importance of those human-machine interfaces to the performance of those safety SSCs.
To meet the human factors safety requirements of 10 CFR 830, a systematic inquiry of
human factors must be presented. An inexpensive yet effective method for accomplishing
this is through application of basic human factors checklists. Such checklists typically
examine preparation, validation, and use of written procedures; qualification and training
of operating crews; staffing; design of the human- machine interfaces; and allocation of
control functions to workers versus automatic devices. Although application of a
checklist is not a requirement, implementation of such a checklist will satisfy the
documentation requirements associated with systematic inquiry into human factors.
Discussions can be brief and are limited to summaries of the major features of the
CO N T E N T GU I D A N C E F O R SE C T I O N S O F CH A P T E R 13
This section provides an introduction to the contents of this chapter based on the
graded approach and include s objectives and scope specific to the chapter as
This section lists the design codes, standards, regulations, and DOE Orders that are
required for establishing the safety basis of the facility. The intent is to provide
only the requirements that are specific for this chapter and pertinent to the safety
analysis, and not a comprehensive listing of all industrial standards or codes or
criteria. SRIDs may be referenced as appropriate.
13.3 HUMAN FACTORS PROCESS
This section summarizes the human factors process for systematically evaluating
the importance of human factors in facility safety. This summary includes the
process features to provide assurance that the importance of human- machine
interfaces is considered in facility safety.