Abstract: An electrofusion coupling (93) for joining together two or more sections of pipe, said coupling comprising: (i) a substantially cylindrical coupling body having an outer surface and an inner surface, the inner surface being sized and shaped to form a clearance fit with the outer surface of the pipe regions to be joined; (ii) at least one electrical heating (94) element set on or in the inner surface of the coupling body; (iii) terminal means adapted to connect the electrical heating means to an electrical supply; characterized in that the terminal means does not project beyond the outer cylindrical surface of the coupling body once the welding process is complete.

Abstract: A fitting for providing a substantially fluid-tight seal between an opening in a chamber wall and a pipe passing through the opening, the fitting including a tubular sleeve adapted to pass through the opening in the chamber wall and further adapted to allow the pipe to pass through the sleeve, a flange extending radially outwardly from the sleeve, a first surface of the flange being configured to contact the chamber wall around substantially the whole circumference of the opening wherein the flange incorporates an energy transfer device enabling the first surface and/or wall of chamber in the vicinity of the flange to be heated to cause the flange and the wall to fuse or bond together in order to form a substantially fluid tight seal.

Abstract: A pipework containment system comprising: (i) an outer containment pipe extending between a chamber and a sump; (ii) a fluid-tight seal between the outer containment pipe and the chamber; (iii) a fluid-tight seal between the outer containment pipe and the sump; (iv) a plurality of flexible supply pipes extending between said chamber and said sump; characterized in that the plurality of supply pipes are contained within one and the same outer containment pipe, the arrangement of supply pipes within the outer pipe and the flexibility of the supply pipes being such that each individual supply pipe may be withdrawn from the system and/or replaced after construction of the pipework containment system is complete.