Definitions - Continued

DOE-STD-3014-96

SSC Functionality: As used in this standard, the function that a structure, system, or

component (SSC) performs to ensure that no significant threat to the general public (from

release of hazardous material) results from an aircraft crash accident.

Scabbing: A local damage that signifies the peeling off (or ejection) of material from the back

face of the target.

Scenario: A succession of specified events beginning with an initiating event, followed by other

events (such as failures of structures or systems), and ending with the release of hazardous

material.

Secondary Missile: A part of the breakaway aircraft segments or a facility SSC (e.g., a

chimney structure) that becomes detached as a result of the impact of a primary missile on a

facility.

Spalling: A local damage that signifies the ejection of target material from the front face of the

target.

Structures, Systems, and Components (SSCs): Buildings; building components (e.g., a roof

slab or wall); other structures (e.g., tanks, bunkers); mechanical or electrical systems (e.g., a

heating, ventilating, and air conditioning [HVAC] system or a cable-tray system); and mechanical

or electrical components or equipment (e.g., a motor control center or a pump). In this standard

it is generally used to refer to SSCs whose failure as a result of aircraft crash could result in a

release of hazardous material.

TACAN: Tactical Air Navigation, a military aviation navigational aid.

Takeoff Flight Phase: Refer to "Flight Phase" for definition.

Target: A facility, SSC, or other structure under evaluation that has the potential to be impacted

by an aircraft or aircraft-generated missile where such impact could ultimately lead to a release

of hazardous material.