BS EN 3456:2012 includes some editorial changes with respect to BS EN 3456:2009
— 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 EN 14153-1:2003 (ISO 24801-1:2007) explains the competencies divers must achieve to be awarded level 1
BS EN 4429 defines the general requirements for the determination of warp bow of narrow woven fabrics by measurement testing
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 3456:2012 includes some1 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
