Radiological Surveys and Data Trending - Continued

DOE-STD-1128-98

Guide of Good Practices for Occupational Radiological Protection in Plutonium Facilities

A sufficient number of points should be surveyed to adequately assess the

radiological status of the area being surveyed.

Routine radiological surveys should be regularly conducted, recorded, and

reviewed for all areas where personnel could be exposed to alpha, beta, gamma,

X-ray, or neutron radiation throughout the site. Surveys should be performed at

frequencies adequate to ensure protection of personnel. The following surveys

should be considered the minimum. Additional surveys should be conducted,

recorded, and reviewed as necessary to ensure that personnel exposures are

maintained ALARA.

General radiation and contamination surveys should be performed:

To identify and verify the boundaries of areas which must be radiologically

controlled.

to verify that radiation and contamination levels in uncontrolled areas remain

less than specified limits.

to determine the appropriate posting of localized higher radiation levels,

beams, or hot spots.

to ensure that radiological conditions are acceptable and documented prior to,

during, and at the completion of work that may cause changes in radiation

levels to occur (see Munson et al., 1988, p. 6.1.2).

to satisfy required predetermined procedure hold-points in work areas and

adjacent areas, whenever operations are performed that may cause significant

increases in radiation levels. The survey may be required as part of a

radiological inspection step required by the work procedure. This includes

areas above and below the work area as appropriate during special processing

operations or cell decontamination, movement of permanent or temporary

shielding, radioactive waste processing, and relocation of highly radioactive

materials.

Routine radiation and contamination level surveys should be performed in the

workplace at a frequency commensurate with the radiation hazard, to detect trends

related to equipment, systems, environment, and work habits.

Nonroutine surveys of radiation and contamination levels in the workplace should

be performed:

3-5