Performance Capabilities for Internal Exposure Monitoring cont'd

DOE-STD-1128-98

-- upgrade bioassay measurement systems and workplace monitoring practices to

provide state-of-the-art measurements

-- ensure that internal dose assessments use state-of-the-art technology.

-- ensure workplace monitoring programs are designed to identify potential intakes.

All confirmed occupational intakes of plutonium, regardless of magnitude, should be

assessed. The results of all bioassay and other measurements needed to support the

quality of measurements and dose assessment should be recorded and maintained.

The recording and reporting requirements for internal dosimetry data are set forth in

Section 3.7 of this report; however, the following is a summary list of internal

dosimetry information for which recording is required:

-- Total CEDE from all intakes during a year

-- committed dose equivalent (CDE) to organs or tissues of concern from all intakes

during a year

-- magnitude of intake for each radionuclide during a year

-- data necessary to allow subsequent verification, correction, or recalculation of

doses

-- gestation period dose equivalent to the embryo/fetus from intake by the declared

pregnant worker during the entire gestation period.

Radiation exposure records programs must also provide for the summation of internal

and external doses, as required by 10 CFR 835.702 (DOE, 1998a). While the

summation process is not necessarily performed under a site internal dosimetry

program, it behooves the program to recognize what is required. The following

summations are identified by 10 CFR 835.702(c) (5) and (6):

-- Total effective dose equivalent (TEDE) defined as the summation of effective

dose equivalent (deep dose equivalent) from external exposure and the CEDE

-- summation of the effective dose equivalent (deep dose equivalent) from external

exposure and the CDE to organs or tissues of concern

-- cumulative TEDE

-- for the embryo/fetus of a declared pregnant worker, the summation of the deep

dose equivalent to the mother from external exposure during the entire gestation

period and the gestation period dose equivalent to the embryo/fetus from intakes

by the mother during the entire gestation period.

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