Contamination Control Methods

DOE-HDBK-1130-98

Isolate the area.

Minimize exposure to radiation and contamination.

Secure unfiltered ventilation.

Notify Radiological Control personnel.

D. Contamination Control Methods

Every radiological worker should perform work in such a manner as to minimize the

generation of radioactive contamination and confine the spread of radioactive contamination to

the smallest area possible. By controlling contamination, the worker minimizes the potential

for internal exposure, and personnel contamination can be minimized. Examples of methods

used to control the spread of radioactive contamination follow:

Prevention

A sound maintenance program can prevent many radioactive material releases.

Establish a solid routine maintenance program for operating systems to minimize

failures and leaks that lead to contamination.

Repair leaks as soon as identified to prevent a more serious problem.

Establish adequate work controls before starting jobs.

During pre-job briefings, discuss measures that will help reduce or prevent

contamination spread. The agreed upon measures should be implemented by

workers at the job site.

Change protective gear (e.g., gloves) as necessary (typically as directed by

Radiological Control personnel) to prevent cross-contamination.

Stage areas to prevent contamination spread from work activities.

Cover work area to minimize cleanup afterward.

Cover piping/equipment below a work area to prevent dripping contamination

onto cleaner areas.

Cap contaminated pipes or systems when not in use.

Prepare tools and equipment to prevent contamination.

Bag or sleeve hoses and lines to prevent contamination.

Minimize the equipment and tools taken into and out of contamination areas.

Cover/tape tools or equipment used during the job to minimize decontamination

after the job (i.e., taping up a screwdriver before use).