Specifications for vibration levels in process pipelines during the operation of chemical plants

When chemical processing units are in operation, the vibration levels of process pipelines are generally determined with reference to the following standards: 1. **Internationally accepted standards**: - The standards set by the American Petroleum Institute (API 618, API 674) specify requirements for pipeline vibration in equipment such as reciprocating compressors; it is generally recommended that the vibration velocity not exceed 10 mm/s (RMS value). - The International Organization for Standardization (ISO 10816) also provides guidelines for vibration evaluation, but these need to be applied in conjunction with the specific type of equipment. 2. **Commonly used domestic standards**: - The \"Code for Design of Industrial Metal Piping\" (GB 50316) does not specify vibration limits directly, but requires that resonance and excessive vibration be avoided. - In industry practice, it is generally required that the vibration displacement of pipelines not exceed 50 μm, and the vibration velocity be kept within the range of 5–10 mm/s; the specific requirements depend on the pipeline material, properties of the fluid, and the needs of the equipment. 3. **Practical application recommendations**: - The vibration level should be determined by taking into account factors such as the pipe diameter, support methods, and medium pressure; dynamic analysis may be necessary in some cases. - If vibration is noticeable (such as visible shaking or unusual noises), the cause must be investigated immediately to avoid risks of fatigue damage or leakage. In short, there is no one-size-fits-all figure; it is necessary to handle the situation flexibly based on specific operating conditions and standards, with the priority being to ensure safe and stable operation. .