physics

Nuclear Regulation Authority

Nuclear Regulation Authority is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Nuclear Regulation Authority rather than just read about it. In short: The Nuclear Regulation Authority (Japanese: 原子力規制委員会, Hepburn: Genshiryoku Kisei Iinkai; NRA) is an administrative body of the Cabinet of Japan established to ensure nuclear safety in Japan as part of the Ministry of the Environment. Established on September 19, 2012, its first head was Shunichi Tanaka.

Key takeaways

Nuclear Regulation Authority belongs to physics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Nuclear Regulation Authority to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Nuclear Regulation Authority from memory before moving on to harder problems.

Reference excerpt

The Nuclear Regulation Authority (Japanese: 原子力規制委員会, Hepburn: Genshiryoku Kisei Iinkai; NRA) is an administrative body of the Cabinet of Japan established to ensure nuclear safety in Japan as part of the Ministry of the Environment. Established on September 19, 2012, its first head was Shunichi Tanaka.

Background The NRA was formed from the Nuclear Safety Commission, which came under the authority of the Cabinet, and the Nuclear and Industrial Safety Agency (NISA), which was under the Ministry of Economy, Trade and Industry (METI). After the Fukushima nuclear disaster following the March 11, 2011, earthquake, the government's safety measures were seen to be inadequate. Also, NISA, being under the umbrella of METI, which was also responsible for promoting the use of nuclear power, was seen as having a conflict of interest. As a consequence, the new agency was established under the Ministry of the Environment.

Early days According to the law establishing the NRA, the task of working out new nuclear safety rules must be completed within ten months of its September 19, 2012, launch. Chairman Tanaka said that the Authority was determined to undertake a radical review of the existing safety standards and planned to finish the outline of the safety rules by the end of 2012.

Guidelines changed for iodine-tablets in case of a nuclear disaster On 19 July 2013, the NRA updated its guidelines for the distribution and use of stabilized iodine tablets. Under the old rules designed in 2002 by the former regulator, the NSA, iodine tablets were recommended for those up to the age of 40. These former guidelines were based on studies done on the health of the atomic bomb survivors of Nagasaki and Hiroshima. Later studies however showed that although older people had less risk of developing cancer, the risk was not zero. Therefore, the age limit of 40 was abandoned. Because tablets were needed for approximately 4.8 million people who live within 30 kilometers of a nuclear reactor, implementation may take some time with only one pharmaceutical firm in Japan available for the production. Distribution would be started soon, and local governments were ordered to hold briefings for their residents. The NRA also warned that the use of iodine tablets could cause hypothyroidism, a slow-functioning thyroid gland.

See also Ministry of the Environment (Japan)

References

External links Official website (in English) Official website (in Japanese)

Worked examples

Example 1 — a first encounter with Nuclear Regulation Authority

Start with the simplest possible case. Write down what Nuclear Regulation Authority claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Nuclear Regulation Authority before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Nuclear Regulation Authority ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Nuclear Regulation Authority

In research: Nuclear Regulation Authority appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Nuclear Regulation Authority in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Nuclear Regulation Authority is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2012 establishments in Japan, Government agencies of Japan, Government ministries of Japan, so understanding it makes those chapters shorter.
In everyday life: Look for Nuclear Regulation Authority outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Nuclear Regulation Authority in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Nuclear Regulation Authority means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Nuclear Regulation Authority out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Nuclear Regulation Authority in simple terms?

Why does Nuclear Regulation Authority matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Nuclear Regulation Authority?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Nuclear Regulation Authority.