General Implementation Guidance

DOE-STD-3014-96

GENERAL IMPLEMENTATION GUIDANCE.

This chapter provides an overview of the approach described in this standard. The approach is

summarized in the flowchart in Figure 1. The flowchart depicts an approach that provides

maximum flexibility in implementing this standard. The components of the approach are

modular, so they may be used in a different order and still be applicable. For example, a facility

that is located relatively far from airports with limited operations may decide that the best route

through the approach is to begin with impact frequency evaluation. Likewise, a facility with a

low quantity of hazardous material may decide to start with exposure screening. In fact, the

analyst is not limited to these selections and can start the implementation anywhere in the

flowchart. The chronological order of activities presented in Figure 1 is believed to provide the

most efficient method for implementing the approach.

As can be seen by the boxes in Figure 1, the approach consists of three distinct phases, which

aim to answer the following three questions:

Phase I:

Does the total hazardous material in the facility pose a threat to the

public?

Phase II:

Does aircraft crash impact pose a threat to the facility?

Phase III:

What is the extent of the threat posed to the facility and the public?

The steps in the first phase are intended to determine whether the facility in question contains

sufficient inventory of hazardous radioactive or chemical material to pose a potential hazard if

an aircraft crash could result in the release of the available material. If the steps in this phase

indicate that the facility contains sufficient inventory to pose such a hazard, then the analysis

moves to the second phase. The second phase is intended to demonstrate whether an aircraft

crash poses a significant threat of release from the facility. This phase primarily considers

whether the frequency of aircraft impact into the facility is significant and whether those aircraft

that have a high impact frequency could actually do damage to the facility. If the steps in this

phase indicate that aircraft crash poses a threat of release from the facility, the analysis moves

to the third phase. The third phase comprises a "graded" analytical approach for assessing the

extent of the damage to the facility, the extent of any release associated with the damage, and

the exposures associated with the release. In this context, a "graded" analysis means