Large-scale renovation of existing installations

It is estimated that during maintenance, interfaces with the original process are maintained first, then blind flanges are installed, and renovation work is carried out; after the renovation is complete, it is connected to the original process.

As long as proper isolation from the original device is achieved by inserting a blind flange or disconnecting a section of pipeline, and the analysis shows satisfactory results, construction can proceed. After completion of construction, inspections, purging, and leak tests must be conducted to ensure everything is in order, before finally reconnecting it to the original device. The original device has valves that can be connected directly. Just open the valve when the time comes; devices without valves can also be connected after a short pause.

Hello, I left you an in-app message to ask about the tower next to it. Thank you!

From a safety perspective, it is best to stop and carry out the repairs; if stopping is not possible, then the area that needs to be repaired must be thoroughly cleaned and replaced, along with effective isolation being implemented.

Stop with the large-scale renovations! Safety must come first at all costs.

Reply to 1# Fan Defawu: If it’s a large-scale renovation and it’s to be carried out without stopping the operation. It is essential to take proper safety precautions. A detailed renovation plan should be prepared in advance, and the preparatory work prior to the renovation—such as the replacement of pipelines and equipment, purging, isolation, as well as combustible gas testing before carrying out any welding operations—must be carried out strictly. Prepare accident plans. However, upstairs, doesn’t such a large-scale renovation have an impact on normal production? It is possible to upgrade while producing. If that’s the case, it’s for economic reasons. It can be upgraded while in production. If you feel there are too many safety hazards, it is recommended to park the vehicle and have it modified.

Currently, it is estimated that during the maintenance period, interfaces with the original process are maintained first, after which blind flanges are installed; subsequent modifications are carried out, and once these are completed, the system is reconnected to the original process. There is also an emphasis on improving on-site construction management, as well as on the proper handling and supervision of permits related to hot work

It’s already on a large scale – can it still be produced? The original poster, you know your own manufacturing process well; if it doesn’t work, then stop doing it.

Large-scale renovations require shutdown of operations. From the perspective of safe production and safe construction management, before starting the renovations after shutdown, all raw materials and intermediates must be collected, and the pipelines must be thoroughly cleaned. Equipment and pipelines in areas where welding will take place must be steamed, and pipes connecting to adjacent production sections must be isolated using blind flanges outside those areas. All utility systems must have their main valves closed to disconnect them from the plant’s main pipeline network. Fire prevention measures as well as barriers to prevent spread of fire should be put in place in the areas where welding is carried out, and the gas concentration on site must be monitored to ensure safe renovation processes. Additionally, it is necessary to establish a systematic sequence of steps for the renovations in order to maximize construction safety and progress