In our previous article, "The Atomist's Glossary," we explained basic concepts like dose and nuclear material. Today, I'll take this a step further and answer a frequently asked question: "If radiation is everywhere in nature, why do laws so strictly regulate only certain sources?".
It's important to know where nature's "force majeure" ends and human responsibility begins. Nuclear law draws a very clear line here.
1. Nature vs. Man
Ionizing radiation isn't just the domain of nuclear power plants. It's been with us forever. It reaches us from space and emanates from the Earth itself. The Atomic Energy divides these phenomena into two groups, which has enormous implications for our obligations and rights.
Artificial radiation is anything that humans have "created" or activated—X-ray machines, nuclear fuel, and radioactive waste. Here, oversight is complete.
Natural radiation includes radiation from terrestrial and cosmic sources. Interestingly, the law typically does not include natural radiation in the limits (dose limits) to which we as citizens are subject.
Why? Because the law can't, for example, dictate that the sun shine less, or prohibit elements in the Earth's crust from naturally decaying. However, the situation changes drastically when humans make nature more dangerous.
2. When does nature become a problem?
The Act is clear: the regulations apply to activities involving increased exposure to natural radiation, if this increase is the result of human activity.
Let's imagine two real-life examples:
Example 1- Radon in the basement.
Radon is a gas that naturally emanates from the ground. If you simply live at home, nuclear regulations don't impose limits. However, if you have an office in a basement or work underground (e.g., in a mine or water treatment plant), your employer must ensure that radon concentrations don't exceed 300 Bq/m³ (this is the so-called reference level, above which exposure is considered inappropriate). If excessive levels of the gas are present, the workplace must be properly secured.
Example 2- Flight crew.
The higher we go, the stronger the cosmic radiation. A pilot or flight attendant flying high above the ground is exposed to significantly higher doses than we are during a walk in the park. Therefore, aircraft operators are obligated to assess these doses, plan flights to protect their personnel, and assign pregnant employees to ground-based duties.
3. Your apartment and nuclear law
Did you know that the law even looks into what your home is made of? Building materials can contain natural isotopes. To prevent you from being exposed to excessive radiation in your living room, brick and concrete manufacturers must test the concentration of radium, potassium, and thorium before placing their goods on the market. Importantly, as a buyer or tenant, you have the right to inquire about radon levels in a building. However, it's worth noting that this right applies primarily to relationships with companies (e.g., developers or professional landlords), as regulations exempt individuals who do not operate a rental business from this obligation.
4. Why is this distinction important?
The concept of a dose limit is crucial . This is a safe limit that must not be exceeded. Regulations protect us by ensuring that only what we can influence is counted towards this limit. If you work in a hospital X-ray facility, your annual dose includes radiation from the X-ray machine and any radon exposure at work ( if its concentration is high enough to require official notification to regulatory authorities ), but it does not include radiation exposure from a mountain vacation or a flight.
Summary
One might say that nuclear law ignores what is inevitable in nature, but it intervenes where technology or work organization make radiation potentially dangerous. This allows us to know who is responsible for our safety—whether it's a mining employer, an airline operator, or a construction materials manufacturer.
In the next article, we will look at one of the most important foundations of this protection, which I briefly mentioned in the first article, namely the principle of justification.
This article is for informational purposes only and does not constitute legal advice.
Legal status as of April 23, 2026.
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