BS EN 13598-2:2020 pdf free.Plastics piping systems for non-pressure underground drainage and sewerage Unplasticized poly(vinyl chloride) (PVC-U),polypropylene (PP) and polyethylene (PE)Specifications for manholes and inspection chambers. BS EN 13598-2 This document specifes the definitions and requirements for unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE) manholes and inspection chambers intended for non-pressure underground drainage and sewerage systems up to...
BS EN 1837:2020 pdf free
BS EN 1837:2020 pdf free.Safety of machinery一Integral lighting of machines. BS EN 1837 This document specifies the parameters of integral lighting systems designed to provide ilumination in and/or at both stationary and mobile machines to enable the safe use of the machine and the efficient performance of the visual task within and/or at the machine to be carried out by...
BS EN 993-10:2020 pdf free
BS EN 993-10:2020 pdf free.Methods of test for dense shaped refractory products Determination of permanent change in dimensions on heating. BS EN 993-10 Two measuring devices may be used, either the dial gauge apparatus (method 1) or callipers (method 2). Dial gauge apparatus, (Method 1), consisting of a dial gauge or micrometer with an accuracy of 0,01 mm, mounted on...
BS EN 1004-1:2020 pdf free
BS EN 1004-1:2020 pdf free.Mobile access and working towers made of prefabricated elements Materials, dimensions, design loads, safety and performance requirements. BS EN 1004-1 This document applies to the design of mobile access and working towers made of prefabricated elements with dimensions which are fixed by the design and with a height up to 12 m (indoors) and up to...
BS EN 352-1:2020 pdf free
BS EN 352-1:2020 pdf free.Hearing protectors - General requirements. Earmuffs. BS EN 352-1 This document specifies requirements for construction, design, performance, marking and user information for earmuffs.In particular, it specifies requirements regarding the sound attenuation of the earmuffs, measured in accordance with EN ISO 4869-1:2018.The document does not apply to earmuffs outside the size range of headsizes as defined in...
BS EN 352-4:2020 pdf free
BS EN 352-4:2020 pdf free.Hearing protectors一Safety requirements Level-dependent earmuffs. BS EN 352-4 This document is applicable to level-dependent earmuffs. It specifies requirements on construction, design, performance, marking and user information related to the inclusion of the level-dependent functionality.Level-dependent earmuffs are designed to provide restoration of external sounds, while providing attenuation of sounds at high levels. They may be selected for...
BS EN 352-8:2020 pdf free
BS EN 352-8:2020 pdf free.Hearing protectors一Safety requirements Entertainment audio earmuffs. BS EN 352-8 This document is applicable to entertainment audio earmuffs. It specifies requirements on construction,design, performance, marking and user information relating to the inclusion of the entertainment audio facility. Entertainment audio earmuffs use a wired or wireless system through which audio entertainment can be relayed. They may incorporate a...
BS EN 352-10:2020 pdf free
BS EN 352-10:2020 pdf free.Hearing protectors一Safety requirements Entertainment audio earplugs. BS EN 352-10 This document is applicable to entertainment audio earplugs. It specifies requirements on construction, design, performance, marking and user information relating to the inclusion of the entertainment audio facility.Entertainment audio earplugs use a wired or wireless system through which audio entertainment can be relayed. They may incorporate a...
BS EN 13850:2020 pdf free
BS EN 13850:2020 pdf free.Postal services一Quality of services - Measurement of the transit time of end-to-end services for single piece priority mail and first class mail. BS EN 13850 This document specifes methods for measuring the end-to-end transit time of domestic and cross-border Single Piece Priority Mail (SPPM), collected, processed and delivered by postal service operators. It considers methods using...
BS IEC 63068-3:2020 pdf free
BS IEC 63068-3:2020 pdf free.Semiconductor devices - Non-destructive recognition criteria of defects in silicon carbide homoepitaxial wafer for power devices Test method for defects using photoluminescence. BS IEC 63068-3 Defects with characteristic PL features shall be evaluated by PL method. The following descriptions concern such defects in n/n+-type 4H-SiC homoepitaxial wafers with an off-cut angle of 4° along the direction...