Critical Assembly

DOE-HDBK-XXXX-2005

06/30/2005

114.

CRITICAL ASSEMBLY. Special nuclear devices designed and used to sustain nuclear

reactions, which may be subject to frequent core and lattice configuration change and

which frequently may be used as mockups of reactor configurations. [10 CFR 830.3]

CRITICALITY. The condition in which a nuclear fission chain reaction becomes self-

115.

sustaining. [10 CFR 830.3]

116.

CRITICALITY ACCIDENT. The release of energy as a result of accidentally producing

a self-sustaining or divergent fission chain reaction. [DOE G 421.1-1]

117. CROSSCUT BUDGET. The field/Operations budget data involving capital projects, and

real property maintenance, submitted in the specified format in response to the field

Budget Call. [EH62dd1]

118. CULTURAL RESOURCES. Historic properties as defined in the National Historic

Preservation Act, archaeological resource as defined in the Archaeological Resources

Protection Act, and cultural items as defined in the Native American Graves Protection

and Repatriation Act. Includes artifacts and sites dating to the prehistoric, historic, and

ethnohistoric periods that are currently located on the ground or buried beneath it;

standing structures that are more than 50 years of age or are important because they

represent a major historical theme or era; cultural and natural places, select natural

resources, and sacred objects that have importance for Native Americans and other ethnic

groups; and American folklife traditions and arts. [DOE G 450.1-1]

119.

CUMULATIVE TOTAL EFFECTIVE DOSE EQUIVALENT. The sum of all total

effective dose equivalent values recorded for an individual, where available, for each

year occupational dose was received, beginning January 1, 1989. (See Committed Dose

Equivalent, Committed Effective Dose Equivalent, Deep Dose Equivalent, Dose

Equivalent, Effective Dose Equivalent, Lens of the Eye Dose Equivalent, and Total

Effective Dose Equivalent) [10 CFR 835.2]

120.

DAMS. As defined in FEMA 93/June 1979, "Federal Guidelines for Dam Safety." [DOE

O 5480.28] [EH62dd1]

121.

DAY. A calendar day. [10 CFR 708.2]

DEACTIVATION. Placing a facility in a stable and known condition including the

122.

removal of hazardous and radioactive materials to ensure adequate protection of the

worker, public health and safety, and the environment, thereby limiting the long-term

cost of surveillance and maintenance. Actions include the removal of fuel, draining

and/or deenergizing nonessential systems, removal of stored radioactive and hazardous

DRAFT