Quantcast Application of the Graded Approach - doe-std-3009-94_cn3_3-30-060040


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Accident Analyses
Preparation Guide for U
Executive Summary - doe-std-3009-94_cn3_3-30-060041

DOE-STD -3009-94
The programmatic mission of a facility;
The particular characteristics o f a facility;
The relative importance of radiological and nonradiological hazards; and
Any other relevant factor.
The Rule provides for developing the DSA based on judgment of the facility in relation to
these seven factors. For example, simple Hazard Cat egory 3 facilities or facilities that
have a short operational life may only require a limited but adequate analysis documented
to a level less than that required for a Hazard Category 2 facility. In addition, facilities
with short operational lives (or other compelling circumstances) should consider the
appropriateness of using DOE-STD-3011 to meet the requirements of 10 CFR 830. On the
opposite end of the spectrum, a complex Hazard Category 1 facility that is just going into
operation requires extensive analysis and highly detailed documentation.
The application of the graded approach may allow for much simpler analysis and
documentation for some of these facilities. For facilities of little hazard, or hazards at the
Hazard Category 3 level, for which o nly a modest reduction of risk is required, the DSA
may be simple and short. In such cases all of the topics for the DSA listed in this
Standard may not be necessary and with proper technical bases some topics may be
omitted or reduced in the detail that would otherwise be required of Hazard Category 1 or 2
Thus, with application of the graded approach, DSAs for Hazard Category 3 facilities or
facilities with short operational lives will normally require more simplified DSA analysis
and documentation. Specific minimum levels of detail for these facilities are given in
options #3 and #8 in Table 2 of Appendix A to 10 CFR 830 Subpart B and the graded
approach section of each chapter in this Standard. As a minimum, a DSA would be found
acceptable for a simple Hazard Category 3 facility if it used the methods in Chapters 2, 3,
4, and 5 of this Standard to address in a simplified fashion:
The basic description of the facility and its operations, including safety structures,
systems, and components;
A qualitative hazards analysis; and
The hazard controls (consisting primarily of inventory limits and safety
management programs) and their bases.
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