BS EN 14153-1:2003 (ISO 24801-1:2007) explains the competencies divers must achieve to be awarded level 1
— for non-pressure underground drainage and sewerage for both buried in the ground within the building structure (application area code "D") and outside the building structure (application area code "U")
BS 8204-1:2003 + Amendment 1:2009
In scope some remaining fibres have been added
to check that materials are acceptable for typical earthworks activities
Pressure regulators, automatic change-over devices, having a maximum regulated pressure of 4 bar, with a maximum capacity of 150 kg/h, associated safety devices and adaptors for butane, propane, and their mixtures Ingestion-build-58320 BS EN 14153-1:2003 (ISO 24801-1:2007)1 Scope This European Standard defines the constructional and operational characteristics, the safety requirements, test methods and the marking of regulators and automatic change over devices having a maximum regulated pressure of 4 bar, with a maximum capacity of 150 kg h, for use with butane, propane and their mixtures in the vapour phase. This European Standard also applies to the safety devices which are included within regulating devices covered
