On the regular inspection of pressure pipelines
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Since I have just started working in equipment management, there are many things I don’t understand, and I would like to ask for your advice: What are the key pressure pipelines in a vacuum distillation unit? I am preparing to conduct inspections soon, but I’m not entirely sure about them, so I hope those who are more experienced can share their knowledge with me. Thank you in advance
It seems that the original poster has also just started working as a technician; the main pipelines in vacuum distillation include the oil transfer lines and the vacuum pumping system. High-pressure gas, low-pressure gas – three tower bottom extraction lines
As required, all pressure pipelines should be inspected, but this is done in batches based on their level of importance.
Checks can be carried out item by item based on certain conditions: First, pipelines that meet one of the following conditions are considered pressure pipelines: 1. Pipelines that transport substances with a toxicity level classified as extremely hazardous according to the \"Classification of Hazards in Occupational Exposure Materials\". 2. Transporting pipelines carrying media classified as Class A or Class B in terms of fire hazard, as specified in the \"Code for Fire Protection Design of Petrochemical Enterprises\" and the \"Code for Fire Protection Design of Buildings\". 3. Pipelines with a maximum operating pressure of 0.1 MPa (gauge pressure) or higher, used for transporting gases or liquefied gases. 4. Pipelines whose maximum operating pressure is 0.1 MPa (gauge pressure) or higher, and which transport flammable, explosive, toxic, corrosive liquids, or liquids whose maximum temperature is equal to or higher than their standard boiling point. 5. Auxiliary facilities and safety protection devices for management as specified in the first four items. II. The pressure pipelines in atmospheric and vacuum distillation units mainly include the oil transfer line and the vacuum pumping system. High-pressure gas, low-pressure gas; three tower bottoms extraction, steam lines, product export lines, etc. III. After classification by level, inspections can be carried out in batches over the specified period.