Why alara

It is also based on the principle that the probability of occurrence of negative effects of exposure increases with cumulative lifetime dose. As such, the ALARA principle is considered a regulatory requirement for all radiation programs licensed with the NRC and any activity that involves the use of radiation or radioactive materials.

There are three factors to the ALARA philosophy which, when executed correctly, can reduce and even prevent unnecessary exposure: time, distance, and shielding. Limit the amount of time spent near a radiation source. If you must work near a radioactive source, you should work as quickly as possible and then leave the area to avoid spending more time around the source than necessary.

Increase the distance between yourself and a radiation dose. The farther away you are, the lower the dose you will receive. In many cases, the dose rate decreases as the inverse square of the distance — when the distance is doubled, the dose rate goes down by a factor of four.

Put a barrier between you and the radiation source. The type of barrier will depend on what kind of radiation source is being emitted but should be made of a material that absorbs radiation such as lead, concrete, or water. This can also include PPE such as thyroid shields and lead vests. The ALARA principle has successfully limited exposures to workers—and patients undergoing medical procedures involving radiation—for several decades.

Odyssey Software Single Stream Dosimetry. Practicing good hygiene and housekeeping habits effectively moderate the internal radiation hazards presented by radionuclides. Labeling radioactive and potentially radioactive areas and items will help prevent the spread of contamination.

It is important to control contamination with absorbent papers and spill trays and placing any contaminated item in a properly labeled waste container. When a contamination occurs it is important to promptly decontaminate the area to prevent the spread of the contaminate.

Using fume hoods and avoiding dust, aerosol, or volatile gas production can reduce the potential for inhalation of radioactive substances. Using the proper personal protective equipment PPE such as disposable gloves , safety glasses , lab coats , etc. ALARA should be a routine element of your work in radiological areas. Our secure, easy-to-use e-commerce site, www. Thanks for the info. Furthermore, virtually all interventional labs have additional shielding devices such as bedside lead curtains and movable lead glass shields.

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