Radiation Safety Guide

Radiation Protection Services (RPS) has the responsibility to implement the radiation safety program at Stony Brook University. The complete rules and regulations for the safe use of radioactive materials can be found in the University Radiation Protection Committee (URPC) Policies and Procedures booklet, which is available in each authorized radioactive materials laboratory. This booklet is provided to aid you in recognizing your responsibility for radiation safety. While it gives an overview of basic radiation safety procedures, it is the responsibility of each radiation worker to be thoroughly familiar with all applicable sections of the Radioactive Materials Safety Manual.

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Removable Contamination Limits

All removable contamination shall be kept as low as reasonable achievable. Items or areas that could come in contact with skin or personal clothing must always be decontaminated until undetectable. Whenever measurable contamination remains on skin or clothing, notify RPS.

For removable contamination greater than 500 dpm per 100 cm2, the item or area must be cleaned up to the lowest practical levels within 1 working day. "Lowest practical level" means that level at which the risk from the contamination hazard is minimal. For example, labeled items in designated work areas should be decontaminated to less than 500dpm/100cm2. Items that could be used in uncontrolled areas (i.e. an internally contaminated centrifuge to be transferred to the shop for repair) must be cleaned until no contamination is detectable.

Removable contamination greater than 1000dpm per 100cm2 must be decontaminated to the lowest practical levels at once. Such contaminated incidents must be reported to RPS within one working day. RPS will perform a follow up survey to ensure proper decontamination.


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