BS 8438:2004+A1:2010

This British Standard specifies the mechanical design, dimensional requirements and methods for calculating the operating power requirements for non-mobile troughed belt conveyors incorporating carrying idlers. The standard also specifies methods for calculating the forces exerted on the belt. This standard applies to conveyors using either rubber or plastic belting, with textile reinforcement (conforming to BS 490-1), carrying loose bulk materials, having a maximum speed of 6 m/s. This standard does not cover the safeguarding of hazard points. BS EN 620:2002 covers the safeguarding of hazard points on fixed troughed belt conveyors and BS EN 618:2002 deals with safeguarding of hazard points on fixed belt conveyors that are built into or attached to machines. This standard does not apply to the following categories: underground mining conveyors; conveyors handling materials that do not behave as bulk solids. NOTE 1 Annex A provides guidance on the information to be supplied by the purchaser at the time of enquiry and/order. NOTE 2 Portable and mobile conveyors are covered in BS 4531. NOTE 3 Belt speed in excess of 6 m/s might require analysis of forces not considered in this specification.