HC Deb 23 October 1992 vol 212 c403W
Dr. Reid

To ask the Secretary of State for Defence how his Department plans to maintain the safety of the United Kingdom's nuclear warheads following the withdrawal of underground nuclear testing facilities in September 1996.

Mr. Aitken

If testing ends in 1996, we shall have to rely on alternative methods to ensure the safety of our weapons. Alternative technologies exist, but are not at present an adequate substitute for underground testing. Their development is a matter which we will now be considering.

Dr. Reid

To ask the Secretary of State for Defence what are the circumstances under which the United Kingdom would continue underground nuclear testing after September 1996.

Mr. Aitken

Assuming the current United States legislation is not amended, the prohibition on testing at Nevada will be lifted if another country tests after September 1996.

Dr. Reid

To ask the Secretary of State for Defence what studies his Department is undertaking regarding the testing of nuclear weapons without resort to underground nuclear testing.

Mr. Aitken

We have been involved with work on alternative technologies for proving nuclear warheads for many years. However, they are not at present an adequate substitute for underground testing.