REDWIRE Testing, inspection, and documentation for Sudbury International ducting expansion joints

April 10, 2019 REDWIRE is news you can use from leading suppliers. Powered by FRASERS.

Posted by Sudbury International Engineered Products Limited


Sudbury International Engineered Products Limited offers non-metallic expansion joints for industrial ducting applicatio... Read more

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quality management procedures

Sudbury International is a valuable Canadian source of expansion joints for ducts.

Sudbury International Engineered Products Limited offers non-metallic expansion joints for industrial ducting applications. These expansion joints comply with strict international standards for quality-management systems, like ISO 9001. The Fluid Sealing Association (FSA) in the United States recommends written quality management procedures for design, production, installation, and servicing for customers that do not have internationally approved quality-management systems – of which a major one is testing, inspection, and documentation, in two steps.

Physical and thermal testing

Testing, inspection, and documentation for Sudbury International expansion joints are important quality management procedures for customers to follow. The FSA recommends that the manufacturer prepares, maintains, and uses written procedures that cover the in-process and inspection operations used in manufacturing methods, dimensional checks, visual inspections, non-destructive tests, and other pertinent operations to be performed – all to ensure that the expansion joint meets the specifications. This process should specify the applicable acceptance standards and provide a means to document that operations have been performed with adequate results.

One key step is physical testing. Because flue-gas expansion joints by Sudbury International are so big, it is virtually impossible to set up an in-plant testing process for each one. Small leaks in installations are typically acceptable, and structural pressure tests are usually unnecessary. So users should test the materials used to manufacture joints for quality assurance and establish written procedures to record the findings. Check the product at each manufacturing step to ensure that the joint can perform satisfactorily in its applicable service.

Also essential is thermal testing. Manufacturers can provide test information on request, demonstrating the ability of the overall design and combination of materials to withstand the maximum temperature for which the joint is proposed. These data should include gas temperature at the inside surface of the internal liner, of the fabric, and of the innermost elastomer-coated layer, both outside and under the backup bar; the ambient external air temperature is also required. Time at temperature should be at least four hours after achieving the steady-state condition.

After this testing, the following quality management procedures include the final inspection and identification.

For more information, contact Sudbury International.


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Posted by Sudbury International Engineered Products Limited


Sudbury International Engineered Products Limited offers non-metallic expansion joints for industrial ducting applicatio... Read more

Contact supplier