What are the precautions for parking in winter?
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Parking in winter. Reduce load. Stop the steam. Pour the material. Steaming. What are the things to be mindful of regarding replacement during peacetime compared to normal times?
Be sure to take precautions against freezing! We’ve had the situation where we drove after parking! All pigtail tubes are frozen!
1: Drain the medium from pipelines, equipment, and pumps. 2: Open the valve, dry with nitrogen, and maintain pressure. 3: Also, pay attention to the thermal expansion and contraction issues of some devices. 4: Be careful that the safety valve does not freeze to death during operation. It can’t be opened. 5: Depending on your site, be sure to pay attention to preventing freezing in some dead corners as well.
Be careful to prevent freezing and frost; clean the wires promptly.
1. For steam and various types of water, if the flow continues without interruption, it is necessary to provide a vent at the end; in cases where no such vent is available, the flange can be removed or the pressure gauge can be unscrewed to allow venting. 2. If steam and various types of water are stopped, compressed air (preferably nitrogen) must be used to purge the water from the pipelines and equipment. 3. The drain valves at each low point must be opened and checked to ensure they are unobstructed; inspections should be carried out periodically thereafter. If there is no drain point at the lowest point, the nearest flange must be unscrewed to drain the water completely.
1. Drain the pipes and equipment related to water or solutions. 2. Blow dry the aforementioned pipes and equipment using compressed air or pressurized nitrogen. 3. Be aware of the risk of low-temperature shrinkage of the equipment. 4. Blow dry the release valves or safety valves as well. 5. In the case of a short shutdown, it is best to keep the steam or circulating water flowing. 6. Drain all drain lines to prevent the valves or pipes from being damaged by freezing
In any case, it’s best to go over the entire process and the equipment once more before driving
Different devices have different key handling points； The key issue is freeze protection; from heavy oil to various types of pipelines, heat tracing, air cooling, etc., it is best to establish a circulation or flow system in order to minimize the recovery time
Be careful to protect the anti-freezing drainage channels, as well as the medium inside the equipment and pumps. Open the valve, dry with nitrogen, and maintain pressure.
Key: Anti-freezing; the most crucial aspect of this is to take action to prevent freezing in a timely manner!!!
1: Drain the medium, materials, steam, and various types of water from the pipelines, equipment, and pumps. If this process does not stop, it is necessary to ensure that there is a discharge point at the end; in cases where no such point exists, the flange can be removed or the pressure gauge can be unscrewed to allow drainage； When the steam and various waters are stopped, open the valves and use compressed air or nitrogen to dry the area and maintain pressure. 2: The drain valves at all low points must be opened and checked to ensure they are unobstructed; regular inspections should be carried out thereafter ； If there is no drain point at the lowest point, the nearest flange must be unscrewed to drain the water completely.