Methodology for Evaluating Exposure Due to Aircraft Impact

DOE-STD-3014-96

METHODOLOGY FOR EVALUATING EXPOSURE DUE TO AIRCRAFT IMPACT

7.1

Purpose. This chapter provides the methodology for evaluating exposure resulting from

aircraft impact on a facility. The methodology by which exposure is assessed can be

divided into two broad areas: exposure screening and exposure evaluation.

Exposure Screening. The purpose of exposure screening is to determine, on the basis of

7.2

overall facility inventory and generic expected release mechanisms associated with aircraft

impact (e.g., fuel fire, missile impact shock, building collapse), whether a facility has the

potential for significant onsite or offsite exposure, given an aircraft impact.

Applicability. Exposure screening will be performed for all facilities subject to the

7.2.1

provisions of this standard.

Hazard Identification. Hazard identification will be performed to identify and

7.2.2

inventory hazardous materials and energy sources (in terms of quantity, form, and

location) associated with the facility processes or related operations. Standard

industrial hazards will be identified only to the degree that they may exacerbate a

postulated aircraft impact on the facility. Well-confined material may be excluded

from the hazardous materials inventory, but such exclusions should be justified

based on the robustness of the material containment in a postulated aircraft impact

environment (i.e., such assumptions should be shown to be valid for the class of

accidents being evaluated). References 1 and 2 may be used in performing

hazard identification.

Radioactive Materials. This section summarizes the screening approach for

7.2.3

radioactive materials. More detail is provided in a separate report, Screening for

the Potential Consequences of Accidental Releases of Radioactive and Chemical

Materials to the Atmosphere (Reference 3).

7.2.3.1

Radioactive Material Source Term Determination. A bounding source

term will be developed based upon an assumed loss of containment for

all hazardous radioactive material associated with the facility, except the