Areva - Reference Document 2016

GLOSSARIES 1. Technical glossary

> Regulated nuclear facilities ( installation nucléaire de base, INB) In France, an installation nucléaire de base (INB) is a regulated nuclear facility which by its nature or by the quantity or activity of any radioactive substances it contains, within the meaning of the INB nomenclature, is subject to the French Nuclear Safety and Transparency Law of June 13, 2006 and to its implementing regulations. Monitoring of regulated nuclear facilities is carried out by the inspectors of the Autorité de sûreté nucléaire (French nuclear safety authority ASN). By way of example, a nuclear reactor, an enrichment plant, a fuel fabrication plant and a used fuel treatment plant are all regulated nuclear facilities. > Renewable Energy Energy produced from renewable, non-fossil sources that can be replaced within a human generation. > Reserves / Resources Reserves consist of ore inventories known with certainty that can be feasibly mined in the short term at a competitive economic cost. Resources consist of reserves and of ore inventories whose existence is only assumed or estimated with a certain probability, and that are potentially mineable over the medium to long term. > Residual power Power released by the radioactivity of the nuclear fuel and other materials in a nuclear reactor that is shut down or in a used fuel assembly. > Rod cluster control assembly (see control rod) Equipment containing the neutron-absorbing elements used to control the fission chain reaction in a nuclear reactor. The chain reaction can be slowed or stopped by introducing the rod cluster control assembly into the fuel core. > Rotor Component of a wind turbine consisting of several blades (usually three) attached to a central hub, which are themselves attached to the nacelle. The wind turns the rotor, producing mechanical energy which is then converted into electrical energy by the generator. > Rotor blades Wind turbine rotor blades capture kinetic energy from the wind and convert it into mechanical energy in the form of aerodynamic lift. As they are assembled as a rotor by means of a central hub, this linear thrust can be converted into more easily exploitable torque load. > Safety analysis report Report describing the design of regulated nuclear facilities and the measures taken to ensure safety. It identifies the risks presented by the facility and describes the measures taken to prevent them as well as measures conducive to reducing the probability of accidents and their effects. > RepU Recycled uranium from used fuel treatment.

> Safety review The safety review of a facility is used to assess the facility’s status in terms of the rules applicable to it and to update the assessment of the risks and drawbacks that the facility may present, taking into account in particular the condition of the facility, the experience acquired from operations, the accumulation of knowledge, and the rules applicable to similar facilities. > Safety system A set of documents presentingmeasures taken to ensure the safety of a facility. The safety analysis report is one such document. In particular, it includes: p a license decree (in France, if the facility was created or modified after 1963) and the license application file; p requirements decreed by the French nuclear safety authority (ASN); p a Safety Analysis Report (SAR) and general operating rules ( règles générales d’exploitation, RGE ), or general monitoring and servicing rules ( règles générales de surveillance et d’entretien, RGSE); p a waste management study for the facility stating the goals for minimizing waste volume and toxicity; p an Internal Emergency Management Plan ( plan d’urgence interne , PUI), which may include sections that are common to the entire nuclear site in which the facility is located. > SEA sites (sites with significant environmental aspects) In AREVA’s frame of reference, nuclear sites, sites with facilities representing major manmade risk per Seveso regulations, operating mine sites, plant sites with facilities subject to public inquiry, and industrial or office building sites which make a significant contribution to the group’s environmental accounting in terms of consumption, releases or hazards. > Shielding, biological shielding, biological protection Protective shielding from radiation used to limit exposure of people. > Specific response plan ( Plan particulier d’intervention , PPI) Describes the emergency response organization set up by government agencies in the event of an accident in a nuclear facility with potential off-site consequences. The mobilization and coordination of necessary resources, tailored to the circumstances, are placed under the authority of the Prefect. > Stator Static component of an electric motor (such as a reactor coolant pump set) or an alternator. > Steam generator Heat exchanger in a pressurized water reactor (PWR) that transfers the heat from the water in the primary cooling system to the secondary system, where it is converted into steam that drives a turbine connected to an alternator to generate electricity. > Shipping cask Name for a container used to ship radioactive materials. > Specific burnup See burnup.

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2016 AREVA REFERENCE DOCUMENT