The use of reinforced thermoset plastic (RTP) vessels operating at pressures not exceeding 15 psig external and/or 15 psig internal above any hydrostatic head, which contains corrosive, or otherwise hazardous materials, dictates the need for rules and/or stress analysis concerning materials of construction, design, fabrication, quality control, and inspection of such equipment. The ASME RTP-1 standard provides for these rules. In developing rules for reinforced thermoset plastic vessels, the principles of rules included in Section VIII, Division 1 of the ASME Boiler and Pressure Vessel Code have been adapted, wherever they are applicable. Adaption of standard rules requires recognition of differences that exist between metallic materials and reinfoced plastic vessels. These differences include materials and assembly, design, and inspection.
The RTP - Reinforced Thermoset Plastic Corrosion Resistant Equipment Accreditation Program provides the means for recognition of proper application of the RTP-1 standard by a fabricator.
The fabricator who completes a vessel, and has held throughout its design and fabrication a valid Certificate of Authorization, having the acceptance of the Inspector may then apply the RTP-1 symbol, which together with the Fabricator's data report certify all requirements of the RTP-1 Standard have been met.
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