There are many methods available for designing GRP (glass reinforced plastic) piping systems for internal pressure. These include short term methods such as those found in ASME RTP-1 and long term methods such as ASTM D2996. Other standards, such as ASME B31.3, ASTM F1173, and ABS Rules for Steel Vessels and MODUs, provide options for both long term and short term methods. ASME RTP-1 goes one step further by allowing a design process based on design calculations only.
This paper will provide the details for designing GRP piping systems according to a new standard, ISO 14692. This method involves generating a design envelope to address all stresses from the design conditions of the system. This paper will also provide a comparison of this method’s advantages and disadvantages to other standards currently in use.