Methodology for Evaluating the Integrity of Structures. Systems

DOE-STD-3014-96

METHODOLOGY FOR EVALUATING THE INTEGRITY OF STRUCTURES, SYSTEMS,

AND COMPONENTS SUBJECTED TO AIRCRAFT IMPACT

6.1

Purpose. This chapter establishes a methodology for deterministically evaluating the

structural integrity of targets (or barriers) and the functionality of safety-related structures,

systems, and components (SSCs) in a facility that may be subjected to impact from one or

more subcategories of aircraft with frequencies greater than frequency guidelines. It also

provides the technique for selecting critical missiles from the site-specific list of aircraft

that may potentially impact the facility.

The design/evaluation procedures in this chapter are generally conservative and

consistent with nuclear power industry practices. However, the use of a more precise

and detailed methodology is not precluded if the intent of this chapter is satisfied.

Alternative methods and technical discussions are provided in Appendix C, and the

justification for these recommended methods and examples is provided in Reference 1.

Adverse Effects. The following potential adverse effects of a missile impact on a

6.1.1

target should be considered:

Local Structural Damage: A missile may hit a target, causing excessive

local damage (i.e., penetration and spalling, scabbing, perforation).

Global Structural Damage: When subjected to the impact from a

missile, a target may undergo excessive structural deformation or

displacement (without collapse) or may structurally collapse or overturn.

Functional Failure of SSCs: When a building structure is impacted,

attached SSCs in close proximity to the impact location may be

subjected to shock and vibration, resulting in their functional failure.