To ask the Secretary of State for Energy if he has agreed the definition adopted for the detection time concerning the diversion of nuclear materials from intended peaceful uses, by the safeguards authorities of the International Atomic Energy Agency; and if he will make a statement.

The definition of detection time is given in paragraph 108 of the "IAEA Safeguards Glossary" 1987 edition—ref. IAEA/SG/INF/1 (Rev. 1)—a copy of which is available in the Library of the House. This definition is accepted by the member states of the International Atomic Energy Agency, including the United Kingdom.