Radiological Postings - hdbk-1130-98

DOE-HDBK-1130-98

Module 6: Radiological Access Controls and Postings

Instructor's Notes

Radiological Postings

Radiological postings are used to:

Alert personnel to the presence of radiation and

radioactive materials.

Aid in minimizing personnel dose.

Prevent the spread of contamination. In addition, 10

CFR 835 - Subpart F specifies requirements for

personnel entry controls for HR and VHR Areas.

Posting requirements

Areas and materials controlled for radiological

EO3 Identify the colors and

purposes will be designated with a magenta or black

symbol used on radiological

standard three-bladed radiological warning symbol

postings.

(trefoil) on a yellow background.

Fixed barriers such as walls, rope, tape, or chain will

designate the boundaries of posted areas. Where

possible, the barriers will be yellow and magenta in

color.

The barriers should be placed to clearly mark the

boundary of the radiological areas.

Entrance points to radiologically controlled areas

should have signs or postings stating the entry

requirements, such as "Personnel Dosimeters, RWP

and Respirator Required."

In some cases, more than one radiological condition

See 10 CFR 835.603.

may be present. The area shall be posted to include

all of the radiological conditions that are present.

In areas of ongoing work activities, the dose rate and

contamination levels (or ranges of each) may be

included in postings.

The posting will be placed where it is clearly visible

to personnel.

Responsibilities of the worker

EO2 Identify the worker's

responsibilities in using

Before entering an area controlled for radiological

Radiological Work Permits.

purposes, read all of the signs. Since radiological

conditions can change, the signs will also be changed

to reflect the new conditions. A sign or posting that

you saw one day may be replaced with a new one the

next day.