Structural Screening.

DOE-STD-3014-96

Step 2. Identify critical missiles. Identify a set of missiles to be used for local and global

structural response evaluations by either (1) performing a site-wide basis aircraft hazard

analysis (see Section 2.1 of Reference 1) or (2) as follows:

Select two bounding missiles considering all applicable categories/subcategories

and types of aircraft, one for structural local damage evaluation and the other for

structural collapse evaluation. The bounding missile for local damage evaluation

will be the aircraft engine (or any of the nearly rigid and compact components)

having the highest kinetic energy (i.e. one-half the engine mass times the square

of the impact velocity). The bounding missile for structural collapse evaluation will

be the aircraft having the highest kinetic energy of impact (i.e. one-half the total

aircraft mass times the square of the impact velocity). Reasonable estimates of

horizontal and vertical velocities to be used for assessing bounding kinetic energy

values are the highest velocity values (corresponding to probability 0.0075) given,

for each aircraft subcategory, in Table 2-1 of Reference 1.

Step 3. Perform structural response evaluations. Perform a building local damage

evaluation in accordance with Section 6.3.2. If the local damage evaluation results meet

the guideline provided in Section 4.3, perform a building collapse evaluation using the

energy balance method in accordance with Section 6.3.3. If standardized charts, tables,

or nomographs are available, they can be used for structural screening if they are

developed using conservative criteria and methods equivalent to those described in

Section 6.3.

Step 4. Identify locations meeting guidelines. Identify the structure locations meeting the

guidelines in Section 4.3, i.e., identify the structure locations that are not susceptible to

significant local and global structure damage when impacted by a crashing aircraft. Note

that in the vicinity of these locations, there must not be any building-supported safety-

related SSCs.

Step 5. Test if structure meets guidelines. If there are no building-supported safety-

related SSCs in the vicinity of impact locations, evaluate if all locations within the structure

meet the structural response guidelines of Section 4.3. If yes, the analysis should be