Barrier (c. 1995 - )

Barrier. A physical obstruction that prevents or delays the movement (e.g. migration) of radionuclides or other material between components in a system e.g. a waste repository. In general, a barrier can be an engineered barrier which is constructed or a natural barrier which is inherent to the environment of the repository. Source: International Atomic Energy Agency, Maintenance of Records for Radioactive Waste Disposal, IAEA TECDOC 1097, July 1999, p.27

• Engineered barrier
• Multi-barrier
• Multiple barriers

Events

September 1995	Source - International Atomic Energy Agency, The Principles of Radioactive Waste Management, Safety Series No. 111-F, International Atomic Energy Agency, Vienna, Austria, 1995, p.17
July 1999	Source - International Atomic Energy Agency, Maintenance of Records for Radioactive Waste Disposal, IAEA TECDOC 1097, July 1999, p.27