The Radiation Post


What Are the Three Principles of Radiation Protection

While the three principles of radiation protection grew largely out of the increased use of radioactive medical equipment, such as x-rays, CT and PET-CT scans, they are applicable to any career or industry in which employees or members of the public are exposed to radiation.

Multiple careers put employees at risk for radiation, such as industrial applications, mining, weapons manufacturing and the airline industry. However, radiation experts agree that, “…radiation doses from medical exposure are now the largest source of man-made radiation exposure.”

If you work in a career that poses a risk of radiation exposure, it’s essential that you learn and adhere to three, key principles.

The Three Principles of Radiation Protection

Also called the three principles of radiation safety, these three principles are a more specific implantation of a broader radiation safety paradigm referred to as ALARA – (As Low as Reasonably Achievable).

1. Justification

The first of these principles is that no human should be exposed to doses of radiation – in the workplace or otherwise – unless it is going to do more harm than good. This includes:

  • Any time a new source of radiation is discovered, used, or implemented
  • Any time a new activity arises that puts people at risk via their occupation (as is the case for pilots or astronauts)
  • The use of those sources are proven to be of reasonable benefit for the individual (as is the case where x-rays, CT and PET-CT equipment is used) or for society as a whole

It is also assumed that these sources or activities will be under continuous monitoring, studying, evaluation and analysis such that significant new findings could alter their course of progress or require the addition of new, revised and improved safety procedures and precautions.

1A. Time

For the medical industry, the first principle most employees will learn is Time of Exposure. Thus, we’re including it here as 1A. In every case of radiation exposure in the work place, the goal is to minimize the time an employee, patient or bystander is exposed to radiation. By minimizing the amount of time an individual is exposed to radiation, you simultaneously minimize the total radioactive dosage their bodies absorb.

2. Dose limitation

That’s a perfect segue to the second principle of radiation protection: limiting radiation dosage.

The good news about radiation is that it’s measurable via the assistance of a dosimeter. This allows Radiation Safety Officers and individual employees the ability to precisely monitor radiation exposure at any given time.

Ultimately, the goal is to keep doses to a minimum – and never, ever put yourself or others at risk for experiencing exposure limits that exceed federally governed occupational exposure levels.

Read, Know Your Radiation Exposure Limits, for more information on that topic.

Controlling and minimizing occupational radiation exposure is largely done via time constraints (setting specific time limitations on an employee’s ability to work in a certain space or in the field of a specific element or object) and by providing proper, industry recognized radiation protection and shielding.

3. Optimization of protection

Here, industry professionals are looking at how to create a comprehensive outlook on optimizing protection from exposure from every angle.

So, this principle looks at things from a more societal and global perspective, evaluating, “…the likelihood of incurring exposures, the number of people exposed, and the magnitude of their individual doses…” with the knowledge and practice that these should all be kept as low as reasonably achievable.

Need Help Keeping Your Company in Agreement With the 3 Principles of Radiation Protection?

Lancs Industries has helped companies and employees – just like yours – remain in alignment and compliance with current radiation protection policies. We design and manufacture radiation protection and shielding products of all types, and we’re also happy to create custom gear for virtually any application.

Contact us to learn more about what we do and to ensure your employees minimize their overall radiation risk via your company’s valuable safety policies.

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