26 Fiber-Reinforced Plastic Pressure Vessels and Asme RTP-1—Reinforced Thermoset Plastic Corrosion-Resistance Equipment
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This chapter is intended primarily for engineers and designers whose experience with vessels is primarily with metal equipment. Those having experience with fiberglass equipment but not with Section X  or RTP-1  will also find this chapter useful, but they may want to skim over the following sections on FRP2 technology.
Section X is part of the ASME Boiler and Pressure Vessel (B&PV) Code and has been enacted into law in 37 jurisdictions in the United States and Canada. Although the authors of RTP-1 wrote it so that it could be used as a Code, RTP-1 has not been enacted into law anywhere; therefore, it is at present a voluntary standard. Both standards govern vessels constructed of thermosetting resin reinforced with glass fibers. In addition to glass fibers, Section X also provides for vessels reinforced with carbon or aramid fibers. The pressure scope of Section X is 15 psig to 15,000 psig internal pressure of which the upper limit depends on the size and construction of the vessel. RTP-1 covers tanks and vessels with design pressures 0–15 psig. Both standards have provisions for vessels with external pressure from 0–15 psig.
Neither RTP-1 nor Section X makes a good handbook or textbook on FRP vessel design. This chapter is intended to serve as a manual on the use of the documents. An engineer who specifies an FRP vessel does not need to have the under-standing of FRP that the vessel designer possesses. However, in specifying the vessel, the engineer necessarily makes many design choices, for which reason he or she should understand the rudiments of FRP technology.