Muoviteollisuus

This European Standard gives requirements for the design, fabrication, inspection, testing and verification of GRP tanks and vessels with or without thermoplastics lining for storage or processing of fluids, factory made or site built, non-pressurized or pressurized up to 10 bar, for use above ground. Further requirements are presented in normative Annex G.The terms vessels and tanks as used in this part of EN 13121 include branches up to the point of connection to pipe work or other equipment by bolting and supports, brackets or other attachments bonded directly to the shell.This part of EN 13121 covers vessels and tanks subject to temperatures between - 40 °C and 120 °C.Excluded from this part of EN 13121 are:- tanks and vessels for the transport of fluids;- underground storage tanks;- spherical vessels;- vessels and tanks of irregular shape;- tanks and vessels with double containment where the double wall is considered structural;- tanks and vessels which are subject to the risk of explosion, or failure of which may cause an emission of radioactivity;- specification for fibre reinforced cisterns of one piece and sectional construction for the storage, above ground, of cold water (see EN 13280).

This document specifies two test methods for determining the longitudinal tensile properties of glass-reinforced thermosetting plastics (GRP) pipes. The properties which can be determined are Method A uses, for the test piece(s), a longitudinal strip cut from a pipe. Method B uses a specified length of the full cross-section of the pipe. Method A is applicable to pipes with a nominal size of DN 50 or greater with circumferentially wound filaments, with or without chopped glass and/or woven rovings and/or fillers, and to centrifugally cast pipes. It is applicable to pipes with helically wound filaments with a nominal size of DN 200 or greater. Method B is applicable to all types of GRP pipe. It is usually used for pipes with a nominal size up to and including DN 150. Results from one method are not necessarily equal to the results derived from any of the alternative methods. However, all methods have equal validity. Annex A describes additional considerations for method B that have been found useful for the testing of thin-walled helically wound pipes and can be used to supplement the basic text.