Online calibration of safety valves
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Question: Can a safety valve be taken for online calibration every 2 years? Which standard does the attached diagram come from?
The on-line calibration of safety valves generally requires compliance with relevant standards and the manufacturer’s recommendations; it is usually advised to perform such calibration at least once a year. For the specific standards regarding the on-line calibration of safety valves, reference can be made to \"GB 150 Pressure Vessels\" or \"JB/T 4735 Test Methods for Safety Valves\". Ensuring regular calibration is necessary to maintain the safety and reliability of the equipment. .
That requirement should come from the Safety Valve Calibration Requirements (2021 version); in practice, inspections are carried out once a year
Thank you! Which department issued these verification requirements?
What are the requirements for safety valve calibration (2021 updated version)? Not found
DB34/T 2286-2022 Procedures for On-line Calibration of Safety Valves, Local Standard of Anhui Province
DB35T 1688-2017 Safety Technical Specifications for On-line Calibration of Safety Valves for Flammable and Explosive Media, Local Standard of Fujian Province