May I ask if it is possible to adjust the set pressure of the safety valve on-site by oneself? What standard procedures are required?

The set pressure of the safety valve cannot be adjusted arbitrarily by oneself. It must be carried out in accordance with relevant safety specifications and procedures; usually, it requires adjustments by professional technicians, and after those adjustments, pressure tests are needed to verify its accuracy and safety. It is recommended to contact a professional maintenance team or the equipment manufacturer to handle the matter, ensuring that the operations comply with **safety standards or industry standards. .

A design change is required. Then, qualified personnel must make adjustments and verifications.

I adjusted it myself; it’s not possible to apply a stamp or a seal. Inspections of special equipment can be deemed major safety hazards.

So, what is the standardized process for this?

A company should have a special equipment supervisor, who is someone who has passed the qualification exam for special equipment management, to oversee and manage such equipment. The renewal and acquisition of the safety production management qualification certificate each year also involves testing on this content. (The key personnel in chemical enterprises as well as on-site production managers are required to obtain this certificate.) Records must be kept for all safety valves, pressure gauges, and pressure vessels; safety valves need to have identifiers indicating their installation location, the medium they handle, as well as the calibration schedule, set pressures for activation and reset. The Equipment Department has dedicated personnel in charge of this task; each user unit must submit an inspection request at least one month in advance, based on the relevant records, and the Equipment Department will then arrange for an external inspection to be carried out. The relevant general principles can be found in the \"Law of the People’s Republic of China on the Safety of Special Equipment\" and the \"Regulations on the Supervision of Safety in Special Equipment\". The calibration parameters for safety valves shall meet the requirements specified in the \"Regulations on Safety Inspection of Boilers\", the \"Regulations on Safety Inspection of Fixed Pressure Vessels\", the \"Rules for Periodic Inspection of Pressure Pipelines – Industrial Pipelines\", and the \"Regulations on Safety Inspection of Safety Valves\" ； Enterprises should establish their own management methods and systems for special equipment, to be implemented by inspection units qualified for the online calibration of safety valves. It is recommended that the original poster discuss the situation with the person in charge of equipment at your company. Lack of compliance, non-standard practices, or failure to implement the management regulations for special equipment are considered serious safety hazards; penalties may be imposed in mild cases, while in severe cases, operations must be suspended for rectification.

This diagram is very professional. Is there a detailed document? I’d like to refer to it personally.