Equipment reset and bolt tightening standards after maintenance
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Hello everyone: I want to write a standard about the resetting and bolt tightening of equipment (heat exchanger heads, flanges, etc.) after maintenance, and also formulate a checklist. Although I know how to do it in daily operations, I feel that the content is not comprehensive when I write it into a standard. I checked the forum and there is no relevant information. I don’t know if anyone has it. Is there anyone who has relevant information for my reference? Thank you!
If you use a hydraulic wrench to loosen and tighten, look for a copy of the ASME-PCC-1 standard.； If using a stretcher, refer to HG21573.
Thank you! The ones mentioned above are all special tools. We actually use manual mechanical tools, wrenches, etc., but I have made standards based on actual experience, and the results are pretty good.
Sir, could you please send me the equipment reset and bolt tightening standards after maintenance? Thank you very much. We also have such requirements and we won’t do it. Thank you. My email is zjl19840520@163.com.
What are the procedures for removing, maintaining, replacing, reinstalling, and tightening bolts? You can refer to the suggestions above. The ASME standard is very detailed.
Can you talk more about the bolt tightening procedure?
Could you please ask me if the bolts that were hand-tightened during the boosting process need to be tightened again?
Hand tightening is based on feeling. For ordinary flanges or high-pressure flanges, equipment flanges are best tightened with a torque wrench. Nowadays, there are special hydraulic torque wrenches, which are very convenient.