Structural Evaluation - Continued

DOE-STD-3014-96

sectional area of missile, and impact angle. These parameters reasonably

represent the important characteristics of the aircraft types that are included in the

subcategory. Alternatively, one or more critical aircraft may be selected,

considering all contributing aircraft subcategories for the particular site.

Guidelines for selecting these critical aircraft are provided in Chapter 6, along with

guidelines for selecting critical impact locations and impact angles. Interactions

between safety and nonsafety systems, structures, and components are also

considered. If the structural response evaluation indicates that the facility

(including any equipment supported by the structure) meets the structural

response evaluation guidelines (Section 4.3) for all impact locations of all aircraft

subcategories considered, the risk is deemed small and the results are

documented. If the guidelines are exceeded for any impact location and for any of

the aircraft subcategories considered, the analysis should proceed to the next

step.

Inputs:

The structural response evaluation guideline. (Defined)

Design information for the representative aircraft used as a surrogate

for the aircraft types contained in the aircraft subcategory (mass,

speed, angle of impact, mass distribution, etc.). (Defined)

A list of aircraft subcategories that contribute to exceeding the

impact frequency evaluation guideline. (Derived)

Structural design information for the facility. (Available from existing

facility design documents)

A list of, and design information about, SSCs whose failure could

result in a release. (Available from existing facility safety analyses)

The location of hazardous material within the facility and accident

scenario information. (Available from existing facility design,

operation, and safety analysis documents)

Outputs:

A list of aircraft types or subcategories whose impact into the facility

could result in facility damage (if any) potentially leading to a release.