[ Standards ]
[ Standards ]
USA , UK & EU Pressure Standards usage and compliance for high-spec casting production
Cast products that require a high level of customer order specifications in the pressure vessel industries go through rigorous evaluation , inspection , and testing procedures that verify all identifying criteria have been met . These procedures are developed based on standardized documentation from organizing bodies such as ASTM , ASME , ISO / EN and others . The agreements made between the producer and customer are finalized in the certificate of conformance and are the guidelines by which highspecification castings are to be manufactured .
By Michael Porfilio , Director of Quality and Technical Services , SF & E
Hydro-Thermal non-obstructive Direct Steam Injection ( DSI ) heating solution , the NOH Heater , installed in a metropolitan sewer department acid digester building .
Following all the rules and regulations required to cast , process , and eventually certify high-specification castings , there must be an astute and detail-orientated team of individuals that understand all aspects of the foundry and customer base serviced . Dedicated Metallurgists , Process Engineers , Foundry Engineers , and QM / QA personnel are a mandatory element for success . The customer ’ s final product demands that all codes , directives , and specifications must be followed prudently and treated with respect .
Contract review The customer will specify the level of criticality during testing and inspection that is required by their internally developed standards . Once all the required inspection and testing operations are reviewed , NDE / NDT technicians and level III professionals must submit their technical procedures and time personnel records to numerous agencies for approval . These documents are submitted sequentially and can vary greatly in length to gain approvals for the testing and inspection operations .
Material specifications Metallurgical specifications contain chemical ranges and mechanical properties such as tensile strength , yield strength , percent elongation , and percent of area reduction . These properties ensure that the produced material and the heat treatment applied to them meet the minimum properties of that specification . Other metallurgical items that are useful in high alloy work are hardness measurements to verify the heat treatment process was effective . Processing specifications include
32 Stainless Steel World September 2024 www . stainless-steel-world . net