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The Chernobyl reactor accident source term (1995)

Author	L.Devell, NEA, CSNI
Date	November 1995
Classification	2.34.8.10/84 (CHERNOBYL ACCIDENT - CONSEQUENCES SURROUNDINGS - GENERAL)
Front

COMMITTEE ON THE SAFETY OF NUCLEAR INSTALLATIONS

The Committee on the Safety of Nuclear Installations (CSNI) of the OECD Nuclear 
Energy Agency (NEA) is an international committee made up of senior scientists 
and engineers. It was set up in 1973 to develop, and co-ordinate the activities of the 
Nuclear Energy Agency concerning the technical aspects of the design, construction 
and operation of nuclear installations insofar as they affect the safety of such 
installations. The Committee's purpose is to foster international co-operation in 
nuclear safety among the OECD Member countries.

The CSNI constitutes a forum for the exchange of technical information and for 
collaboration between organisations which can contribute, from their respective 
backgrounds in research, development, engineering or regulation, to these activities 
and to the definition of the programme of work. It also reviews the state of knowledge 
on selected topics on nuclear safety technology and safety assessment, including 
operating experience. It initiates and conducts programmes identified by these 
reviews and assessments in order to overcome discrepancies, develop improvements 
and reach international consensus on technical issues of common interest. It promotes 
the co-ordination of work in different Member countries including the establishment 
of co-operative research projects and assists in the feedback of the results to 
participating organisations. Full use is also made of traditional methods of 
co- operation such as information exchanges, establishment of working groups, 
and organisation of conferences and specialist meetings.

The greater part of the CSNI's current programme is concerned with the technology of 
water reactors. The principal areas covered are operating experience and the human 
factor, reactor coolant system behaviour, various aspects of reactor component 
integrity, the phenomenology of radioactive releases in reactor accidents and their 
confinement, containment performance, risk assessment, and severe accidents. The 
Committee also studies the safety of the nuclear fuel cycle, conducts periodic surveys 
of the reactor safety research programmes and operates an international mechanism 
for exchanging reports on safety related nuclear power plant accidents.

In implementing its programme, the CSNI establishes co-operative mechanisms with 
NEA's Committee on Nuclear Regulatory Activities (CNRA), responsible for the 
activities of the Agency concerning the regulation, licensing and inspection of 
nuclear installations with regard to safety. It also cooperates with NEA's Committee 
on Radiation Protection and Public Health and NEA's Radioactive Waste 
Management Committee on matters of common interest. 

....................
The opinions expressed and the arguments employed in this document are the 
responsibility of the authors and do not necessarily represent those of the OECD.
Requests for additional copies of this report should be addressed to:

Nuclear Safety Division
OECD Nuclear Energy Agency
Le Seine St-Germain
12 bd.des.Iles
92130 Issy-les-Moulineaux
France

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