Summary of dose limits - DOE-HDBK-1143-2001

Radiological Control Training for Supervisors

DOE-HDBK-1143-2001

Instructor's Guide

1. Summary of dose limits

Show OT 2.8 and OT 2.9.

10 CFR Part 835 employs the rem unit for

several different physical quantities (i.e.

absorbed dose, effective dose equivalent,

total effective dose equivalent, dose

equivalent, committed dose equivalent,

committed effective dose equivalent). For

information about these quantities refer to 10

CFR Part 835 definitions. This training will

use the term "dose" as a general term for all

the above terms.

These are the Federal limits. DOE

encourages sites to adopt more restrictive

Administrative Control Levels (ACLs). For

most facilities an ACL of 500 mrem or less

will be challenging for radiological workers.

Exposed Individual

Annual Limit

General Employee: Whole Body (internal and external) (TEDE)

5.0 rem

General Employee: Lens of Eye (DE)

15.0 rem

General Employee: Extremity (below elbow and knees) and skin (SDE)

50.0 rem

General Employee: Any Organ or Tissue (other than lens of eye) (DDE + CDE)

50.0 rem

Declared Pregnant Worker: Embryo/Fetus (gestation period) (DE)

0.5 rem

Occupationally Exposed Minors (under age 18): ((TEDE)

0.1 rem *

Members of the Public in Controlled Areas: (TEDE)

0.1 rem

* And 10% of other general employee limit

2. Planned special exposures (PSEs)

It is acknowledged that unusual conditions

can arise in which well documented higher-

than-normal doses can be justified. In these

well-planned, well-controlled, and highly

infrequent and unusual conditions operating

management would be permitted to allow

specified individual exposures exceeding the

occupational limit.

Module 2 - 5