BS EN 50520:2020 pdf free.Cover plates and cover tapes for the protection and location warning of buried cables or buried conduits in underground installations.
BS EN 50520 This document establishes the requirements and tests for cover plates and cover tapes used for the mechanical protection, identification and warning of the location of buried cables or buried conduits. NOTE This document does not apply to meshes and tapes flling under EN 12613.  The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60417, Graphical symbols for use on equipment ISO 3864 (series), Graphical symbols一Safety colours and safety signs.plate with a defined length and width that are linked one to another and are located underground, above the cables and/or conduits that are intended: to protect against mechanical damage to the underground cables and/or conduit installations; and to identify in a prominent manner the location of the underground cables and/or conduit installations along their length and width.tape with a defined width that are located underground, above the cables and/or conduits and that are intended: 一to protect against mechanical damage to the underground cables and/or conduit installations; and.一to identify in a prominent manner the location of the underground cables and/or conduit installations along their length and width.material having the characteristic of enabling attraction or holding water greater than 1,0 % by weight of the material from the surrounding environment at 23 °C and 50 % relative humidity.Cover plates and cover tapes shall be So designed and constructed that, when installed according to manufacturer’s instructions, they provide mechanical protection and location warning of cables or conduits in all their extension (length and width). Compliance is checked by carrying out all the tests specified. Products made of hygroscopic material shall fulfil requirements of 5.3 before testing. Compliance is checked by inspection of raw material supplier’s data sheet. BS EN 50520 pdf download.