Gives recommendations for the design, planning, prefabrication, transport, installation and testing of thermally insulated underground piping systems for steam, and chilled or hot water. Gives detailed recommendations for pre-insulated pipe-in-pipe systems which are buried directly in the ground and gives brief outlines of other systems.Cross References:BS 812BS 882BS 1199 and BS 1200BS 1387BS 2640BS 2871BS 2971BS 3601 BS 3602BS 4147BS 4164BS 4508BS 5750BS 6031CP 1021CP 2010BS EN 253BS EN 287BS EN 288Water Acts, 1945 and 1948Gas Acts, 1948 and 1965Requisitions Land and War Works Acts, 1945 and 1948Land Powers (Defence) Act, 1958Public Health Acts, 1936 and 1961Pipelines Act, 1962Acquisition of Land (Authorization Procedure) Act, 1946 Public Utilities Street Works Act, 1950Coast Protection Act, 1949Land Drainage Act, 1961Health and Safety at Work etc. Act 1974Regulations for the control of substances hazardous to health (COSHH)Health and Safety Executive guidance note G.55Building RegulationsGas Supply RegulationsIEE Regulations for Electrical InstallationsClean Air ActHighways ActPartially replaced by BS EN 13941:2003.