ES&H Manual

Radiation Control Supplement




Appendix 3A

Suggested Checklist for Reducing Occupational Radiation Exposure




1.    Preliminary Planning and Scheduling


       Plan in advance

       Delete unnecessary work

       Determine expected radiation levels

       Estimate person-rem (collective dose)

       Sequence jobs

       Schedule work

       Select a trained and experienced work force

       Identify and coordinate resource requirements


2.    Preparation of Work Control Documents


       Include special radiological control requirements in technical work documents

       Perform as low as reasonably achievable (ALARA) pre-job review

       Select and optimize engineering and administrative controls to control dose

       Plan access to and exit from the work area

       Provide for service lines (air, welding, ventilation)

       Provide communication (sometimes includes closed-circuit television)

       Remove or shield sources of radiation

       Plan for installation of temporary shielding


       Work in lowest radiation levels

       Perform as much work as practicable outside radiation areas

       State requirements for standard tools

       Consider special tools, including robots

       State staging requirements for materials, parts and tools

       Analyze PPE requirements to ensure optimization of hazard control, risks, and costs

       Incorporate Radiological Control Hold Points

       Minimize discomfort of workers

       Revise estimates of person-rem (collective dose)

       Prepare Radiological Work Permits (RWPs)


3.    Temporary Shielding


       Design shielding to include stress considerations

       Control installation and removal by written procedure

       Inspect after installation

       Conduct periodic radiation surveys

       Prevent damage caused by heavy lead temporary shielding

       Balance radiation exposure received in installation against exposure saved by installation

       Shield travel routes

       Shield components with abnormally high radiation levels early in the maintenance period

       Shield position occupied by worker

       Perform directional surveys to improve design of shielding by locating source of radiation

       Use mock-ups to plan temporary shielding design and installation

       Consider use of water-filled shielding


4.    Rehearsing and Briefing



       Use mock-ups duplicating working conditions

       Use photographs and videotapes

       Supervisors brief workers


5.    Performing Work


       Comply with technical work documents and RWPs

       Post radiation levels

       Keep excess personnel out of radiation areas

       Control radiation exposure while controlling exposure to other hazards

       Supervisors and workers keep track of radiation exposure

       Workers assist in radiation and radioactivity measurements

       Delegate radiological control monitoring responsibilities

       Evaluate use of fewer workers

       Reevaluate methods used to control radiation exposures

       Compare actual collective dose against pre-job estimate

       Review work practices to see if changes will reduce dose

       Coordinate personnel at the job site to reduce nonproductive time


6.    Post-Job Debriefing


       Review collective dose against estimate

       Review conduct of work

       Evaluate positive/negative portions of work

       Review potential changes to enhance efficiency

       Review possible conflicts of radiation controls with general safety

       Resolve radiation control conflicts with Industry Safety Reports

       Recommend specific changes for subsequent jobs













ESH&Q Division

Keith Welch






This document is controlled as an on line file.It may be printed but the print copy is not a controlled document.It is the userís responsibility to ensure that the document is the same revision as the current on line file.This copy was printed on 7/6/2010.