High Radiation Area

DOE-HDBK-1188-2006

295.

HIGH RADIATION AREA. Any area, accessible to individuals, in which radiation levels

could result in an individual receiving a deep dose equivalent in excess of 0.1 rem (0.001

sievert) in 1 hour at 30 centimeters from the radiation source or from any surface that the

radiation penetrates. [10 CFR 835.2]

296.

HOLDUP (NUCLEAR MATERIAL). Holdup is the nuclear material that is retained in

process equipment at inventory time. [DOE O 6430.1A]

297.

HUMAN FACTORS. Those biomedical, psychosocial, workplace environment, and

engineering considerations pertaining to people in a human-machine system. Some of these

considerations are allocation of functions, task analysis, human reliability, training requirements,

job performance aiding, personnel qualification and selection, staffing requirements, procedures,

organizational effectiveness, and workplace environmental conditions. [DOE O 5480.30]

[EH62dd1]

298.

HUMAN FACTORS ENGINEERING. The application of knowledge about human

performance capabilities and behavioral principles to the design, operation, and maintenance of

human-machine systems so that personnel can function at their optimum level of performance.

[DOE O 5480.30]. [EH62dd1]

299.

ILLEGAL DRUG. A controlled substance, as specified in Schedules I through V of the

Controlled Substances Act, 21 U.S.C. 811, 812. The term "illegal drugs" does not apply to the

use of a controlled substance in accordance with terms of a valid prescription, or other uses

authorized by law. [10 CFR 707.4]

300.

IMMUNE RESPONSE. The series of cellular events by which the immune system reacts to

challenge by an antigen. [10 CFR 850.3]

301.

IMPORTANT TO SAFETY. Any equipment or components whose function can impact

safety either directly or indirectly. This includes safety-related equipment, equipment relied

upon for safe shutdown, and in some instances, balance-of-plant equipment. [DOE O 5480.21]

[EH62dd1]

302.

IMPROVED RISK. Generally, an improved level of property protection is one that would

qualify for complete insurance coverage by the Factory Mutual System, the industrial risk

insurers, or other industrial insurance companies that limit their insurance underwriting to the best

protected class of industrial risk. [DOE O 6430.1A]

303.

IN-PROCESS OR IN-USE MATERIAL. Material that is integral to the manufacturing or

production processes and is needed to maintain continuity of operations. Other material that