physics

Petten nuclear reactor

Petten nuclear reactor 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 Petten nuclear reactor rather than just read about it. In short: The Petten High Flux Reactor (HFR) is a nuclear research reactor located in Petten, Netherlands. The HFR is on the premises of the Petten research centre and it is a high flux reactor.

Key takeaways

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

Reference excerpt

The Petten High Flux Reactor (HFR) is a nuclear research reactor located in Petten, Netherlands. The HFR is on the premises of the Petten research centre and it is a high flux reactor. It is owned by the Joint Research Centre (JRC) and managed by the Nuclear Research and Consultancy Group (NRG). The HFR’s original purpose was to provide experience and irradiation capabilities for the nascent Dutch nuclear power program. Construction began in 1958, and the reactor reached criticality on the 9th of November, 1961.

History The construction of the HFR was one of the first contracts to be fulfilled by the Nuclear Reactor Engineering Organisation (also known as Nuclear Products – ERCO), an unincorporated division of American Car & Foundry Industries Incorporated (ACF) that formed in 1954 in order to enable ACF to enter the commercial nuclear reactor sector. The contract was signed in May 1956. Under the Atoms for Peace program, an export license was granted to ACF and construction began at the site in Petten in 1958. However, in 1959 ACF sold its nuclear division to Allis-Chalmers, who took over the project and commissioned the reactor, reaching criticality two years behind schedule on November 9th, 1961.

Medical importance Apart from its function as a research centre, the HFR is a large producer of radioactive material for the purpose of medical diagnosis and the treatment of cancer (radiopharmaceuticals). As of 2010, the nuclear facility supplied about 60% of the European demand for medical isotopes. Also at the high flux reactor, one of the neutron beam channels, which was originally installed for performing fundamental research, has been specially modified for the direct irradiation of patients. This allows use of neutrons for the treatment of tumors after saturation of these tumors with a pharmaceutical containing boron. When hit by a weak neutron beam, boron will locally emit radiation that will destroy the tumor. This technique is mainly suitable for the treatment of brain tumors.

Technology As of 2006, only low-enriched uranium fuel was used at the facilities in Petten. As a result of political pressure from the United States and the International Atomic Energy Agency (IAEA), research reactors are no longer allowed to use highly enriched uranium fuel because of its potential use for the production of nuclear weapons. The use of highly enriched uranium targets for the production of medical isotopes was discontinued in January 2018.

The high flux reactor Its capacity was increased in steps to 45 MW (thermal) by 1970. The reactor is property of the European Commission and is operated by the Nuclear Research and Consultancy Group (NRG). As of 2024, the reactor is expected to remain operational until 2030, when it will be replaced at Petten by a new high flux reactor (PALLAS). In August 2008, the reactor was shut down due to corrosion in its primary cooling circuit. The operator brought the plant back online in February 2009.

The low flux reactor The low-flux reactor was first used in 1960 and permanently shut down in 2010. It had a capacity of 30 kW. The reactor was the property of the Nuclear Research and Consultancy Group (NRG) and mainly used for the production of neutrons for biological and physical research.

Timeline In 2009 the Argentine company INVAP (teamed with Spanish group Isolux) was pre selected in the international tender for the PALLAS project, for the procurement of an 80 MW nuclear reactor for the Dutch village of Petten, but in February 2010, the Dutch radiopharmaceutical producer Nuclear Research and Consultancy Group (NRG) extended the preparatory phase up to end of the year for financing In mid-May 2014, NRG, the company that operates the reactor, requested a bridging loan from the Dutch Ministry of Economic Affairs due to financial losses in previous years. A bankruptcy could not be ruled out if the credit were refused. In addition, negotiations with the banks were underway due to the estimated 80 million euros needed for the upcoming maintenance of the 50-year-old reactor.

See also BR2, a high-flux reactor at SCK CEN in Mol (Belgium), producing radioisotopes Chalk River Laboratories, a nuclear facility in Ontario that formerly produced North America's supply of isotopes for nuclear medicine Borssele Nuclear Power Station Dodewaard nuclear power plant

References

External links Media related to Petten nuclear research centre at Wikimedia Commons Nuclear Research and consultancy Group Energy Research Centre of the Netherlands

Illustrations

Worked examples

Example 1 — a first encounter with Petten nuclear reactor

Start with the simplest possible case. Write down what Petten nuclear reactor 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 Petten nuclear reactor 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 Petten nuclear reactor 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 Petten nuclear reactor

In research: Petten nuclear reactor 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 Petten nuclear reactor 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: Petten nuclear reactor is common in secondary-school and first-year university syllabi. It links to neighbouring topics Nuclear research reactors, Nuclear technology in the Netherlands, Schagen, so understanding it makes those chapters shorter.
In everyday life: Look for Petten nuclear reactor 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 Petten nuclear reactor in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Petten nuclear reactor 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 Petten nuclear reactor out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Petten nuclear reactor in simple terms?

The Petten High Flux Reactor (HFR) is a nuclear research reactor located in Petten, Netherlands. The HFR is on the premises of the Petten research centre and it is a high flux reactor.

Why does Petten nuclear reactor 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 Petten nuclear reactor?

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 Petten nuclear reactor.