BS 4994:1973

Specifies requirements for design, materials, construction, inspection and testing of vessels (pressure and vacuum service) and tanks in reinforced plastics, consisting of a polyester or epoxide resin system reinforced with glass fibres, manufactured by the wet lay-up process. Includes constructions both with and without a lining of thermoplastics. Limited pressure and volume for vessels but no size limitation for tanks subjected only to hydrostatic head of liquid contents. Appendices in clude examples of design calculations and methods of test. See also PD 6480.