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Measures to prevent freezing and cracking, as well as ice formation, in devices, equipment, pipelines, and pumps

2021-01-26View Original

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1. The unit must identify the areas prone to freezing and condensation, assign responsible persons for preventing such phenomena, establish a systematic routine inspection system for this purpose, and implement appropriate measures to prevent freezing and condensation. 2. Blind flanges should be installed at the connections between the decommissioned equipment, pipelines, and the production system; after draining any accumulated water, the area should be purged thoroughly. For outdoor idle equipment and equipment exposed to the elements, it is necessary to prevent it from being damaged by standing water or snow. 3. Equipment that is in operation or temporarily shut down, as well as water pipes, steam pipes, and control valves, must have anti-freezing insulation measures; alternatively, a method of maintaining a small flow of water or minimal steam flow can be used to achieve both cost savings and protection against freezing. After the steam supply is stopped, these systems must be thoroughly cleaned. 4. Implement anti-freezing and anti-condensation measures for machinery pumps and pump rooms. After transporting high-viscosity oils, the oil remaining in the pump should be cleaned out promptly. When the pump has to be stopped for some reason, resulting in a disruption in the transportation of heavy oil products, the other party should be notified. Attention must be paid to the temperature of the pipelines to prevent icing; if necessary, the other party should be contacted to clear or activate the pipelines. It is necessary to maintain heat insulation for the pump body of heavy oil pumps, in order to prevent excessive starting current caused by the high viscosity of the oil inside the pump, which could damage the motor. When cleaning the pump room, do not use water to wash the floor to prevent water accumulation from causing slipping. 5. Water accumulation in valve chambers in low-temperature areas must be drained, and anti-freezing measures must be taken. Frozen cast iron valves and similar items should be thawed using warm water or slowly heated with a small amount of steam, to prevent damage caused by sudden heating. 6. For precision instruments and chemical reagents, assign a dedicated person to regulate the room temperature and ensure proper frost protection. 7. It is strictly prohibited to use high-pressure steam for heating; care must be taken to prevent high-pressure steam from entering the low-pressure steam system, and the return pipes for high-pressure and low-pressure steam must not be connected to each other. For radiators heated by steam, a pressure reducing valve should be installed on the pipeline. The pressure gauge used for the pressure relief valve must be calibrated properly, and each radiator must be tested for leaks before it can be used. 8. Water used for construction and production should be discharged into gutters. Ice dams on overhead pipes and under eaves should be removed at all times. Jump boards, stairs, tank tops, and other surfaces with ice or snow need to be cleaned before they can be used. 9. Strengthen the dehydration of purified air and unpurified air. To prevent water in the wind from causing the instrument signal air or supply air to freeze and be interrupted, which could lead to incorrect operation of the actuator. 10. For some chemical raw materials and products that are prone to deterioration at low temperatures, it is necessary to pay attention to insulation. Additionally, heat-sensitive raw materials and products should not be placed near radiators, nor should they be placed on heating pipes, to prevent fusion and explosions. 11. Ensure proper frost protection and insulation for fire protection facilities and equipment. The management system for fire protection facilities and equipment should be improved, and a comprehensive inspection of these facilities and equipment should be carried out before winter arrives. 12. Be prepared for emergencies, ensuring that all types of emergency rescue supplies and equipment are available and in good condition. Improve the emergency plans for preventing ice and snow disasters, freezing cracks, frostbite, slips, and leaks in winter, and strengthen drills to enhance the ability to prevent accidents and disasters during winter.

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