On what should be done in terms of equipment management when a chemical plant is shut down for a long period (2-3 years)
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On the specific protective measures that should be taken for equipment in case of a long-term (2-3 years) shutdown of a chemical plant Please share your opinions and discuss together*
It’s mainly some maintenance and turning-the-turbine activities; I really haven’t thought much about it.
It’s better if operating equipment comes with spare units; for large-scale units without such spares, thorough maintenance is necessary, but this still doesn’t guarantee three years of operation. Safety valves and pressure vessels also need to be inspected regularly; generally, a shutdown of the entire system is required every three years. There are also issues related to leaks and the management of pressure pipelines. Operating equipment must be regularly maintained. Of course, maintenance plans for major and minor repairs can be formulated based on the actual condition of the equipment, allowing for an extension of the maintenance intervals; however, regular maintenance is essential, and the equipment cannot be kept running indefinitely until problems arise.
Static equipment and pipelines should be protected against corrosion; dynamic equipment should be rotated regularly and kept clean, while lubricating oil should have its quality analyzed on a regular basis
Static equipment and pipelines shall be protected against corrosion using nitrogen.
Large-scale units, pumps, etc. should be inspected in accordance with maintenance procedures
First, carry out a major maintenance overhaul; then seal what needs to be sealed, provide protection for what requires it, and store items that need to be stored. The rest of the staff should be dismissed, sent on leave, or given training, with a few people remaining to oversee and protect the facility and carry out regular maintenance.
I’ve learned it; I’ll need to replace a large portion of the parts when driving again
I’ve seen equipment that has been out of use for several years; even the transformers remain intact, as it’s not possible to operate them while they’re under voltage. All the other cables and similar components have been stolen, and the equipment is covered in rust, making it impossible to use anymore
The interior of the static equipment should be properly nitrogen-sealed, and corresponding anti-corrosion measures should also be taken on the exterior. Movable equipment should have its lubricant replaced regularly, and it should also be turned over periodically for maintenance. Most organizations are unable to do these things.