Design, materials, construction, inspecting, testing and erection of vessels and tanks in reinforced plastics, consisting of a polyester, epoxy or furane resin system reinforced with glass fibres, manufactured by the wet lay-up process.
BS 4994:1987 history
2016BS EN 13121-3:2016 GRP tanks and vessels for use above ground. Design and workmanship
2008BS EN 13121-3:2008+A1:2010 GRP tanks and vessels for use above ground. Part 3:Design and workmanship
2008BS EN 13121-3:2008 GRP tanks and vessels for use above ground - Part 3: Design and workmanship
1987BS 4994:1987 Specification for design and construction of vessels and tanks in reinforced plastics