Glossary of Environment, Safety and Health Terms

DOE-HDBK-1188-2006

2. GLOSSARY OF ENVIRONMENT, SAFETY AND HEALTH TERMS

ABSORBED DOSE (D). The energy absorbed by matter from ionizing radiation per unit mass

of irradiated material at the place of interest in that material. The absorbed dose is expressed in

units of rad (or gray) (1 rad = 0.01 gray). [10 CFR 835.2]

ACCELERATOR. A device employing electrostatic or electromagnetic fields to impart kinetic

energy to molecular, atomic or sub-atomic particles and, for purposes of this Order [DOE

5480.25], capable of creating a radiological area as defined in Title 10 Code of Federal

Regulations Part 835 (10 CFR 835). [DOE 0 5480.25 cancelled, DOE G 420.2-1]

ACCELERATOR FACILITY. The accelerator and associated plant and equipment utilizing,

or supporting the production of, accelerated particle beams to which access is controlled to

protect the safety and health of persons. It includes injectors, targets, beam dumps, detectors,

experimental halls, experimental enclosures and experimental apparatus utilizing the accelerator,

regardless of where that apparatus may have been designed, fabricated, or constructed. [10

CFR Part 830, "Nuclear Safety Management " is not applicable to accelerators and their

operations] [DOE O 5480.25 cancelled, DOE G 420.2-1]

ACCELERATOR READINESS REVIEW (ARR). A structured method for verifying that

hardware, personnel, and procedures associated with commissioning or routine operation are

ready to permit the activity to be undertaken safely. [DOE 0 5480.25 cancelled, DOE G

420.2-1]

ACCELERATOR SAFETY ENVELOPE (ASE). A set of physical and administrative

conditions that define the bounding conditions for safe operation at an accelerator facility.

[DOE O 5480.25 cancelled, DOE G 420.2-1]

ACCEPTABLE. When applied to fire safety, "acceptable" is a level of protection which the

Authority Having Jurisdiction, after consultation with the cognizant DOE fire protection

engineer(s), considers sufficient to achieve the fire and life safety objectives defined in DOE

Orders. In some instances, it is the level of protection necessary to meet a code or standard.

In other instances it is a level of protection that deviates (plus or minus) from a code or standard

as necessary and yet adequately protects against the inherent fire hazards. [DOE-STD-1066-

99]