Radiological Surveys and Data Trending cont'd

DOE-STD-1128-98

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.

Non-routine surveys of radiation and contamination levels in the

workplace should be performed:

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