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Tech Talk
Why the U-Stamp certification for metal expansion joints in heat exchangers matters
Heavy wall bellows , manufactured for use in a fertilizer plant . Image courtesy of Teadit .
Metal expansion joints are critical components in heat exchangers . These joints ensure the reliability and longevity of heat exchangers , which are essential in various industries such as power generation , chemical processing , and oil refining .
About the Expert
Iberê Souza has a bachelor ’ s degree in Mechanical Engineering from the State University of Campinas ( UNICAMP ), Brazil . Born and raised in Brazil , he ’ s been living in the USA for the past ten years , where he deepened his knowledge of Quality Management Systems and ISO 9001 standards . Iberê recently transitioned to a technical market support position to develop and bring expansion joint solutions to the industry . He is currently the Expansion Joint Market Support Specialist at Teadit .
By Angelica Pajkovic , Client Specialist and Ibere Souza , Expansion Joint Market Support Specialist – Teadit
Heat exchangers operate under high temperatures and pressures , leading to significant thermal expansion . Metal expansion joints accommodate these changes , preventing damage to the exchanger and maintaining efficient operation by providing flexibility and absorbing the expansion , vibration , and other movements . They also mitigate stress on pipes and other connected equipment , reducing the risk of leaks and failures . To ensure that the critical components of unfired pressure vessels meet the necessary standards , the American Society of Mechanical Engineers ( ASME ) created the U-Stamp certification . The U-Stamp confirms a manufacturer ’ s adherence to the quality control system requirements outlined in the ASME Boiler and Pressure Vessel Code ( BPVC ).
Commitment to excellence The U-Stamp accreditation is awarded to organizations that meet the stringent ASME standards for pressure vessel design , fabrication , inspection , and testing . These stamps differ from other QA / QC stamps as they are granted based on standards that a third party develops . Teadit , a global leader in fluid sealing solutions , has recently achieved a significant milestone by receiving the prestigious U-Stamp certification . With this certificate , Teadit has proven its ability to fabricate components and ASME Pressure Retaining Parts which follow the
guidelines outlined in Section VIII of the latest edition of the BPVC . The achievement of this accreditation underscores Teadit ’ s dedication to maintaining the highest levels of safety and reliability in its products and processes . Not only do its products meet the highest standards of safety and performance , but it also ensures that its metal expansion joints are designed , manufactured , and tested to withstand the rigorous demands of heat exchangers and other pressure equipment . “ Our achievement of the U-Stamp certification is a testament to the hard work and dedication of our entire team ,” said Robbie Riggs , President & CEO of Teadit North America . “ This recognition reinforces our commitment to quality and safety , ensuring that our customers receive the best-in-class solutions they have come to expect from us .”
Dedicated to quality Since 1970 , Teadit has manufactured Metallic Expansion Joints and Flue Duct Expansion Joints whose main function is to absorb the movements and vibrations of a pipe compensating for dimensional variations . Its expansion joints are designed to the prescribed specifications for use in heat exchangers required by the Expansion Joint Manufacturers Association ( EJMA ) and ASME . More specifically , Teadit designs expansion joints according to ASME VIII and B31.3 , and all its welders are certified according to ASME IX . It is also a member of the EJMA a global association of leading expansion joint manufacturers and suppliers . The hallmark of Teadit ’ s manufacturing prowess is its comprehensive approach to product development . From initial design to final production , every stage is meticulously executed to ensure optimal performance and durability .
52 Heat Exchanger World September 2024 www . heat-exchanger-world . com