Structural Evaluation - Continued

DOE-STD-3014-96

category/subcategory as outlined above, (2) performing a site-wide basis aircraft hazard

analysis (see situation 2, Section 2. i of Reference 1) to identify a set of aircraft types to

represent all applicable categories/subcategories of aircraft, or (3) selecting appropriate

aircraft types as discussed in Section 6.3.1.

Step 3. Perform structural response evaluations. Sequentially perform structural local

response, global response and SSC functionality evaluations as outlined in Figures 2a and

2b and discussed in Sections 6.3.2, 6.3.3, and 6.3.4, respectively, at all locations except

those previously screened out from consideration. Additional analysis should be

consistent with the analyses associated with the Release Frequency Screening and

Release Frequency Evaluation methods as described in Sections 5.4 and 5.5 respectively.

For Release Frequency Screening, SSC functionality is not evaluated, and global response

is based on the Energy Balance Method discussed in Section 6.3.3.1. For Release

Frequency Evaluation, global response evaluations for locations related to building-

supported safety-related SSCs are based on the Time-History Analysis Method, discussed

in Section 6.3.3.2.

Step 4. Identify categories/subcategories of aircraft. For the Release Frequency

Screening, identify the aircraft categories/subcategories meeting the structural response

guidelines in Section 4.3. These are the aircraft categories/subcategories which inflict

insignificant structural damage upon impact.

For the Release Frequency Evaluation, identify the locations within the facility at which the

impact of a crashing aircraft will inflict insignificant damage and need not be considered in

assessing the effective area of the facility in evaluating impact frequencies.

Step 5. Proceed to the Release Frequency Screening or Evaluation. See Sections 5.4

and 5.5, respectively.