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AWWA D 120:2009
- Englischer Titel
- Thermosetting Fiberglass-Reinforced Plastic Tanks
- This standard describes the composition, performance requirements, construction practices and workmanship, design, and methods of testing thermosetting fiberglass-reinforced plastic (FRP) tanks for the storage of water or other liquids used in water supply service. Major revisions made to the standard in this edition include the following: acceptable types of fittings for tanks have been expanded and clarified; the internal pressure test for aboveground tanks was limited to hydrostatic testing, and the standard was updated to allow either hydrostatic or aerostatic testing for underground tanks subject to manufacturer's input; nonmandatory guidance on manways, manway extensions, anchor straps, and connection hardware for underground tanks has been expanded; and, a new nonmandatory appendix on flanged-joint bolts, gaskets, and installation has been added.