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Further Analysis
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DOE Standard Accident Analysis For Aircraft Crash Into Hazardous Facilities
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Impact Frequency Evaluation Guideline.


DOE-STD-3014-96
4.
SCREENING AND EVALUATION GUIDELINES.
This chapter provides the numerical screening and evaluation guidelines referred to in
Chapter 3. These guidelines are used to determine at what stage in the approach the analysis
is sufficient. It is extremely important to note that these guidelines were developed in full
consideration of and integration with the analytical requirements and methodologies presented
in this standard. Thus, they are only valid when used in conjunction with those requirements
and methodologies (e.g., the atmospheric conditions specified in this standard should be
used). In order to utilize the guidelines in this standard to apply a graded approach to accident
analysis, the conservatisms embedded in alternative approaches should be equivalent to those
in the standard; otherwise, the guidelines do not provide a valid comparison with the results of
the alternative approach.
Exposure Screening Guidelines. The results of the exposure screening step will be
4.1
compared to the following guidelines for exposure to the maximally exposed offsite
individual:
a.
Radiological exposure - 25 rem (0.25 Sv) committed effective dose equivalent
(CEDE);
b.
Hazardous material exposure - Emergency Response Planning Guidelines -
Level 2 (ERPG-2), as established by the American Industrial Hygiene Association
(AIHA); or
c.
Hazardous material exposure where ERPG-2 has not been established - the Level
of Concern established by the U.S. Environmental Protection Agency (EPA)
specified in the 1987 EPA Technical Guidance on Hazards Analysis (or a
successor document).
Generally, dose to the maximally exposed offsite individual is deemed to be a
sufficient measure of potential hazard from aircraft crash. However, there may be
special circumstances in which exposure to onsite workers located outside the
facility needs to be considered (see discussion in Appendix A,
33


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