What is the replacement cycle for blast discs? ? ? Is it determined by the design, or by the manufacturer?

This post was last edited by sihanlele on 2025-10-23 08:15. Normally, I remember that they are replaced after 2-3 years from the time of installation. (1) The replacement cycle is determined by the manufacturer: a) Since the manufacturer is familiar with the most appropriate mechanical loading methods, stress levels, and operating pressure ratios for each type of rupture disc under different working conditions, it may also have available analysis and testing data (on fatigue and corrosion), historical records, as well as results from similar engineering tests for various types of rupture discs for reference. Therefore, for rupture discs under normal operating conditions, the replacement cycle can be determined by the manufacturer. b) To verify whether the determined replacement cycle for the burst disc is appropriate, the burst disc can be carefully removed after one working period, packaged as required, and returned to the manufacturer for inspection and testing. The manufacturing unit shall record the dimensional changes, signs of corrosion, sealing performance (where appropriate), burst pressure, and any other relevant details of the returned disc valves. By comparing these with the original records from the time of manufacture, the replacement cycle can be adjusted. c) On some particularly important occasions, blast discs that are identical in terms of the type, model, specifications, material, and required bursting characteristics to those actually used can be tested under conditions simulating the expected operating conditions. Blast discs that have been in use for a certain period of time are then detonated by the manufacturer, and the replacement cycle is determined based on the blasting data. (2) The replacement cycle is determined by the user unit. Under certain special working conditions, since the user unit is familiar with the effects on the material of the burst disc or its bursting performance under similar working conditions, it may have records available for reference (operational, inspection, monitoring, and historical records). Therefore, the replacement cycle for the blast disc can be determined by the user based on experience.

Explanation in Appendix D of GB 567.2 is to be determined by the manufacturer and the user.

【Ten Years of Rapid Development in Chemical Engineering Equipment】Sinopec’s independently developed intelligent assistance system for evaluating defects in pipeline circumferential weld radiographic inspections, 2754–2025, has completed accuracy tests. https://bbs.hcbbs.com/thread-5703159-1-1.html (Source: Haichuan Chemical Industry Forum)

【Ten Years of Rapid Development in Chemical Engineering Equipment】From 2756 to 2025: The petroleum university team made significant breakthroughs in oil and gas pipeline technology using sound-magnetic hybrid ultra-high-definition detection technology. https://bbs.hcbbs.com/thread-5703161-1-1.html (Source: Haichuan Chemical Engineering Forum)

【Ten Years of Rapid Development in Chemical Engineering Equipment】From 2017 to 2024, CNPC Pipeline Bureau made breakthroughs in key technologies for flexible welding robots in mountainous areas! https://bbs.hcbbs.com/thread-5703164-1-1.html (Source: Haichuan Chemical Industry Forum)

【Ten Years of Rapid Development in Chemical Engineering Equipment】From 2017 to 2024, CNPC Pipeline Bureau made breakthroughs in key technologies for flexible welding robots in mountainous areas! https://bbs.hcbbs.com/thread-5703164-1-1.html (Source: Haichuan Chemical Industry Forum)

【Ten Years of Rapid Development in Chemical Engineering Equipment】From 2017 to 2024, CNPC Pipeline Bureau made breakthroughs in key technologies for flexible welding robots in mountainous areas! https://bbs.hcbbs.com/thread-5703164-1-1.html (Source: Haichuan Chemical Industry Forum)

【Ten Years of Rapid Development in Chemical Processing Equipment】Major breakthroughs achieved in the development of metallocene catalysts at the Jilin Petrochemical Research Institute of Sinopec from 2025 to 2759 https://bbs.hcbbs.com/thread-5703175-1-1.html (Source: Haichuan Chemical Industry Forum)