Disarmament

>> Cessation of nuclear testing

Centre d'essais du Pacifique in 1987 and in 1998, after dismantling. Credit = CEA

France is the only nuclear-weapon State to have closed down and dismantled its nuclear testing centre, located in the Pacifique (Centre d’expérimentation du Pacifique). It now no longer has facilities in which to conduct nuclear tests.

French support to ban nuclear tests has several components:

- The definitive end of nuclear tests announced on 20 January 1996.

- The dismantling of facilities of the Centre d’expérimentation du Pacifique announced in 1996 and completed in late July 1998. France, together with its European Union partners, is calling for the dismantling of all nuclear testing sites, in a manner that is transparent and open to the international community.

To find out more
- The French Defence Ministry published a scientific report - the first of its kind - in March 2007, on the radiological aspects of French nuclear tests in the Pacific. To date, France is the only nuclear-weapon State to publish such extensive information on its testing sites and their surrounding environment.
- Also see the 2008 report on monitoring radioactivity in French Polynesia published by the French Institute for Radioprotection and Nuclear Safety (ISRN).

- Support for the Comprehensive Nuclear Test Ban Treaty 1 signed by France on 24 September 1996 and ratified on 6 April 1998 with the United Kingdom. France calls for universal ratification of the CTBT and completion of its verification regime. It provides its active technical and financial support to the provisional technical Secretariat of the CTBT.

Promotion of the CTBT was one of the proposals set out by President Sarkozy in Cherbourg on 21 March 2008 in his disarmament action plan. It was a priority of the French Presidency of the European Union in disarmament and non-proliferation during the second half of 2008. The entry into force of the CTBT is thus one of the key elements of the EU disarmament action plan adopted under the French Presidency and endorsed by the European Council in December 2008. In addition, the European Union adopted an action plan that provides for systematic high-level work to promote the treaty ahead of the 2010 NPT Review Conference.

France’s support for the CTBT can likewise be seen in its jointly presiding on 24 and 25 September 2009 the Article XIV Conference 2 with Morocco with a view to facilitating the entry into force of the CTBT.

France welcomes the current momentum for the entry into force of the CTBT. In his speech in Prague in April 2009, President Obama committed to working with the Senate with a view to US ratification of the CTBT as soon as possible and to then launch a “major diplomatic initiative” to ensure its entry into force. A US ratification would have a knock-on effect on the eight other Annex 2 States which have not yet ratified the Treaty.

Moreover, France is helping to bolster the verification regime and support the Comprehensive Nuclear Test Ban Treaty Organization (CTBTO) Preparatory Commission. It is responsible for 24 monitoring stations.

At European level, three joint actions adopted within the framework of the European Union Common Foreign and Security Policy (CFSP) yielded work in such areas as training, building verification regime performance and technical assistance to third countries. In that last area, concrete projects as part of the third joint action being implemented are going to benefit the largest number of countries possible among the 28 African and Indian Ocean countries. European Union support likewise furthers the development of scientific and civil uses of technologies in the international watch system. This European support has also been translated into sizeable financial pledges since European Union financial contributions to the CTBT have amounted to over €5 million since 2006.

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The Comprehensive Nuclear Test Ban Treaty (CTBT)

The Comprehensive Nuclear Test Ban Treaty (CTBT) was opened for signature on 24 September 1996 and bans any nuclear explosions.

Seismograph. Credit = CEA

“Each State Party undertakes not to carry out any nuclear weapon test explosion or any other nuclear explosion, and to prohibit and prevent any such nuclear explosion at any place under its jurisdiction or control”.

CTBT, Article 1

It also organizes a verification regime. Withdrawal from the Treaty is possible in the event that a State Party’s supreme interests are jeopardized.

The CTBT can only enter into force after its ratification by the 44 States that had nuclear facilities in 1996 (Annex 2 States). Nine of these States have not yet ratified the Treaty: China, Egypt, Indonesia, Iran, Israel and the United States (Signatory States) and India, North Korea and Pakistan (non-signatory States). A total of 182 States have signed the CTBT and 153 have ratified it.

The CTBT verification regime

The Treaty provides for the creation of an International Monitoring System (IMS) designed to detect, localize and confirm nuclear tests anywhere around the globe of at least one-kiloton yield, whatever type of launch. It comprises a total of 321 monitoring stations - and 16 radionuclide laboratories - established worldwide. To date, some 85% of them are set up and their data is transmitted to countries that are charged with monitoring it and to an International Data Centre in Vienna. France is responsible for 24 stations in this network.

The IMS has four types of stations that are different depending on the technology used to monitor:

 The Treaty provides for 321 monitoring stations to be set up

170 seismic stations
80 radionuclide stations
60 infrasound stations
11 hydroacoustic stations

Although it has not yet been completed, this regime, in which over a billion dollars has already been invested, proved to be effective when North Korea claimed to have conducted two nuclear tests.

While the network continues to be established, the main challenge lies in the construction of the latest stations (located in areas that are difficult to access or in the territory of non-signatory States of the Treaty) and in the maintenance of stations, some of which have existed for over ten years. The relatively modest financial contributions of CTBT Signatory States should therefore continue. France’s contribution amounted to €5 million in 2009.

How can nuclear tests be detected?

Several methods can be used to detect a nuclear test. It all depends on the type of test: underground, atmospheric or underwater.

- Underground nuclear tests create seismic waves similar to those in an earthquake. They can therefore be detected by seismometers.

- Atmospheric nuclear tests have very little interaction with the ground, which means that seismic waves cannot be used. However sound disturbances generated in the atmosphere can be measured using a microbarometer. Radioactive materials dispersed in the atmosphere during the explosion can also be measured. Monitoring stations collect the particles suspended in the atmosphere and report the presence of certain radioactive elements which are characteristic of a nuclear explosion.

- Underwater nuclear tests generate sound waves which can travel over long distances in the water. Hydrophones are used to detect this type of test. When the waves are transmitted to land, seismic monitoring stations detect the sound waves that have been converted into seismic waves.

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The Article XIV Conference, 24-25 September 2009

Bernard Kouchner. Crédit=ONU/New York

The Sixth Conference on Facilitating the Entry into Force of the Comprehensive Nuclear Test Ban Treaty (more commonly known as the Article XIV Conference) was held at United Nations Headquarters on 24 and 25 September 2009 under the co-presidency of French and Moroccan Foreign Ministers, Bernard Kouchner and Taieb Fassi Fihri.

The two countries, which took over the presidency from Austria and Costa Rica, led the process aiming to promote the entry into force of the CTBT for the following two years until the next conference. It successful outcome can be seen in the broad participation (103 delegations, 53 of them issuing statements) and the high-level representation.

Read the “Final Declaration and Measures to Promote the Entry into Force of the Comprehensive Nuclear Test Ban Treaty”.

Bernard Kouchner welcomed President Obama’s confirmation of his intention to work with Congress to achieve ratification of the CTBT by the United States and expressed the hope that the eight other States whose ratification is required “will be able to become part of this new dynamic in order to take a decisive step towards disarmament and nuclear non-proliferation.”

"On the very day that the Security Council will meet at the Head of State level to discuss nuclear non-proliferation and disarmament issues, this Conference has major political significance for my country. It underlines the responsibility we will assume over the course of our work. The Comprehensive Nuclear Test Ban Treaty has now been signed by 180 States and ratified by 149, benefiting from powerful political momentum and the prospects for its entry into force have never been so close. It is now up to us to find the strength of conviction to ensure the ratification of the Treaty by all nations, and that its entry into force reinforces the international non-proliferation regime and our nuclear disarmament efforts. […] To conclude, I would like to issue a solemn appeal to the nine States whose ratification is needed for the Treaty to enter into force. They have a special duty in this respect. In ratifying the Treaty, they will send a message of hope and strengthen the international non-proliferation regime and collective security.”

Bernard Kouchner, French Minister of Foreign and European Affairs, 24 September 2009

G2 Reactor visit (Marcoule) in March 2009. Credit = N.Petitot/CEA

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