IMPROVEMENTS RELATING TO THE LINING OF PIPELINES AND PASSAGEWAYS

摘要

The invention provides that a flexible lining tube (18) is inflated by a first fluid (20) against a pipeline or passageway (10) to line same. The resin which is UV light curable is then cured by passing an annular structure (24) housing curing lights (54-58) through the inflated tube (18). The lights (54-58) are in an annular cavity (50) which is flooded with a second fluid to keep the first fluid out of contact with the lights (54-58) whilst not impairing the transmission of light from the lights (54-58) to the lining tube (18).