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Wireless Monitoring for Pressure Relief Systems

By Chemical Engineering |

New diagnostic devices can identify when pressure incidents happen, while keeping an eye on the condition of pressure-relief valves and rupture disks Any kind of pressurized system, from the hot-water heater in a residence to a massive chemical reactor, will have some sort of pressure relief mechanism. It’s there to let internal pressure escape before it overcomes the mechanical strength of the equipment. This concept is as old as the earliest steam boilers, and its function is to protect people and equipment. Early pressure-relief-valve (PRV) designs were simply openings held shut by weights. Modern versions are more sophisticated, using springs that can be fine-tuned to open at very specific pressure setpoints and pilot-operated valves that bring a higher level of stability to avoid chattering. PRVs come in a variety of sizes and need to be matched with the overall size of the system and its ability to generate pressure. If pressure can’t be released faster than it can be generated, the valve is too small. If the valve is too large, it could become unstable during a release. A relief system for a process unit generally involves more than one PRV. System design guidelines are covered in the ASME Boiler and Pressure Vessel Code…
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