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A90 Project, Aldermaston

Volume 173: debated on Thursday 24 May 1990

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To ask the Secretary of State for Defence if he will make a statement upon the condition of the ducting used to carry inert gases and the supporting struts in the A90 plant at Aldermaston; and what reports he has received of gas leaks or potential gas leaks.

The replacement of the A90 zone 1 ductwork and its supports by a pipework system was completed in April 1990. Memorandum No. 5 in the House of Commons Defence Committee's fifth report on the progress of the Trident programme (HC 374) gives full details of the reasons for the replacement of the zone 1 ventilation ductwork. Full leak testing of the replacement pipework system has been carried out successfully.