Points to note when working with pressure vessels

Classification methods in the \"Regulations on Safety Inspection of Pressure Vessels\": (1) By pressure level: low pressure, medium pressure, high pressure, ultra-high pressure, external pressure vessels; (2) By function in production: reaction pressure vessels, heat exchange pressure vessels, separation pressure vessels, storage pressure vessels; (3) By installation method: fixed pressure vessels, mobile pressure vessels; (4) By safety standards: Class 3 pressure vessels, Class 2 pressure vessels, Class 1 pressure vessels

1. No matter which aspect of work related to pressure vessels you wish to pursue, such as design, manufacturing, repair, operation and management, inspection and testing, etc., you should first start by studying the \"Regulations on Safety Supervision of Pressure Vessels\". Once you have understood the provisions of these regulations, you will have just begun your journey in this field. 2. Pressure vessels are classified into three categories, namely Category I vessels, Category II vessels, and Category III vessels ； Article 6 of the Code of Acceptance provides detailed regulations. 3. The safety condition levels of pressure vessels are divided into five grades, with grade 1 being the highest and grade 5 the lowest. Vessels rated at grade 5 are considered to be unusable and must not be used any longer ； The regulations regarding the classification of the safety status levels of containers can be found in the relevant provisions of TSG R7001-2004, \"Rules for Periodic Inspection of Pressure Vessels\". 4. Additionally, the \"Regulations on the Safety Supervision of Special Equipment\" also need to be studied carefully, as it is the regulatory document governing all activities related to the safety supervision of special equipment, and it represents the highest level of regulation in this area. For reference!

What was said upstairs is correct; it depends on the specific aspects of work related to pressure vessels that you are engaged in, as each area has its own focus. When you are just starting out, there’s no need to understand all the regulations and standards – learn what is relevant to your job first, and then gradually expand your knowledge over time.

I’m also new to this field. The person on the 3rd floor mentioned that there are many comprehensive resources for learning. I’d like to share some of my own insights: GB150 (for the design verification of container cylinders), JB4712 (used for selecting supports in design), JB4736 and JB4746 (these are one set of standards covering the selection and calculation of reinforcement rings and end caps), the Code for Pressure Vessels (regulations for the classification and inspection of vessels), and HGT 20592–20635-2009 (regulations for steel pipe flanges, gaskets, and fasteners). These standards are essential to have at hand at the beginning, so they can be referred to as needed. One can start with the design of simple vessels under normal temperature and pressure conditions, and then move on to high-pressure equipment, vessels with jackets, horizontal vessels, heat exchangers, and towers, progressing step by step. In this field, experience is gained over time. PS: It’s also useful to learn how to use the SW6 software

When designing pressure vessels, it is essential to be familiar with the relevant standards; all measures and solutions must have a corresponding standard basis. If no such basis can be found, one should not make decisions based on subjective opinions – safety comes first

Precautions for using pressure vessels: 1. Ensure that all components on the pressure vessel are properly and securely installed before use； 2. Ensure that the pressure vessel is horizontally supported and securely fixed at the spacing (S) recommended by the manufacturer ； 3. Ensure that the fixation of the pressure vessel and its piping connections have sufficient flexibility and cushioning capacity to accommodate the radial and axial expansion of the pressure vessel under pressure ； 4. Ensure that the system equipment provides overpressure protection (greater than 105% of the design pressure) for the pressure vessel ； 5. Ensure regular inspection of end plates and piping connections; replace any components that are corroded or damaged promptly ； 6. Ensure that all rubber seals and the inner surfaces of the pressure vessel have been properly coated with lubricant before use ； 7. It is not allowed to attempt to remove any components from pressure vessels under pressure ； 8. No rigid fixation or connection of pressure vessels is permitted ； 9. It is not allowed to operate a pressure vessel without a thrust ring installed downstream of it ； 10. Pressure vessels must not be used beyond their specified operating conditions ； 11. It is not allowed for pressure vessels to have any leaks during use, nor for the end plate components to remain in a wet state. Precautions for the maintenance of pressure vessels: After shutting down the pressure vessel and its associated systems, install blind flanges on the vessel. Fire use for maintenance work: includes strict approval procedures for the use of fire as well as gas sampling and analysis. The containers and equipment should also be disassembled and sealed. Entering the container to carry out work must be done in strict accordance with the regulations. Special attention must be paid to lifting and working at heights to ensure safety. Inspect and maintain scaffolding, spherical tanks, tower equipment, etc. Electrical safety at the maintenance site. During these maintenance tasks, it is necessary to ensure both the quality of the maintenance work and personal safety. Precautions for the design and manufacture of conventional pressure vessels http://bbs.hcbbs.com/viewthread.php?tid=314993