Winter anti-freezing, anti-condensation and insulation measures plan

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Winter anti-freezing, anti-condensation, and thermal insulation measures – Plan 1. Purpose: This plan is formulated to ensure the safe and stable operation of equipment during winter, thereby preventing any unnecessary losses or accidents caused by weather conditions. 2. General requirements for anti-freezing, anti-condensation, and insulation measures. In line with the principles of comprehensiveness, thoroughness, and practicality, the general requirements and responsibility allocations for anti-freezing, anti-condensation, and insulation work are as follows: 2.1 Identify the primary person responsible for these tasks, who shall be in charge of carrying out anti-freezing, anti-condensation, and insulation measures for all production units, facilities, and equipment within their jurisdiction ； The responsibilities for equipment and facilities within the frost prevention, anti-condensation, and insulation area must be clearly defined, with daily frost prevention, anti-condensation, and insulation measures to be considered an important part of the handover procedures during winter production ； 2.2 Based on the actual circumstances, preparations should be made in advance, and detailed and reliable anti-freezing, anti-condensation, and insulation measures should be established. All aspects should be taken into consideration to ensure thorough protection with no gaps, as well as comprehensive maintenance and inspection ； 2.3 Check that the insulation protection of production units, facilities, equipment, as well as instruments and control systems within the respective area is in good condition; any deficiencies or damages should be repaired promptly ； 2.4 Strengthen training for operators on anti-freezing and anti-condensation measures, ensuring that everyone is familiar with the key areas that require such protection in their respective positions and that everyone knows how to implement these anti-freezing and anti-condensation measures. 2.5 Strengthen the routine inspection of anti-freezing, anti-condensation, and insulation points. In the winter anti-freezing measures, each pipeline and piece of equipment must have a dedicated team in charge to ensure that no corner is overlooked; this helps to guarantee proper implementation of anti-freezing, anti-condensation, and insulation measures, with the principle that anti-freezing actions must be carried out before nightfall. 3. Key areas for anti-freezing, anti-condensation, and heat preservation 3.1 Utility and auxiliary systems: The main inlet and outlet pipes for steam at various pressures, process water, circulating cooling water, fire-fighting water, domestic water, instrument air, and condensate recovery shall be subject to regular inspections and maintenance during winter, in accordance with the layout of the pipeline network ； 3.2 Process system: ① Low points of various towers, tanks, pumps, and pipelines ； ②Inlet and outlet lines for machine pump cooling water, as well as drain lines in various plant areas ； ③Inlet and outlet pipelines as well as bypass lines of each circulating water cooler ； ④Each steam tracing line and its return line ； ⑤Insulation of various process pipelines and equipment ； ⑥Trace heating coils inside/outside the body of each equipment ； 3.3 Equipment Systems ① Lubricating oil and cooling water systems for large-scale mechanical equipment ； ②Equipment for reconfiguring power supply systems ； ③On-site instruments and control systems ； ④Atmospheric pressure equipment, pressure-bearing equipment, special equipment ； 3.4 Main system components: steam systems, water piping systems, compressed air systems, fire water systems, fan units, air compressor units, pump station units, etc., belonging to various units ； 4. Specific requirements for anti-freezing, anti-condensation, and thermal insulation 4.1 It is necessary to identify the key areas that require anti-freezing, anti-condensation, and thermal insulation in winter, as well as to establish specific measures for such protection. Inspections related to anti-freezing, anti-condensation, and thermal insulation should be carried out regularly, with increased frequency during extremely harsh weather conditions ； 4.2 For rotating equipment and large-scale units, increase the frequency of routine inspections and shaft turning; the shaft should be turned slowly to prevent freezing and fracture of the shaft. The lubricating oil must be free of water, the cooling pipelines must be in good condition, and the water supply lines must remain unobstructed ； The heat tracing and shaft seals of the cold pump must remain unobstructed to prevent freezing from affecting the valve’s movement; steam preheating measures should be used ； 4.3 High vigilance must be maintained regarding potential failures in utility auxiliary systems such as instrument air, nitrogen, and circulating water (small pipelines), which could affect safe production and the continuous stable operation of the facility; inspections of the equipment and pipeline networks in the plant area should be intensified ； 4.4 For instruments and equipment both indoors and outdoors, it is necessary to regularly calibrate parameters such as temperature, pressure, flow rate, and liquid level, as well as the operating status of the automatic control systems. It is important to ensure that they are not frozen, that they function properly, and to prevent incorrect operations; any issues detected should be addressed promptly through maintenance ； 4.5 For pipes, valves, etc. that have frozen, sudden heating is not allowed; only warm water or a small amount of steam may be used to thaw them slowly, so as to prevent damage caused by sudden heating ； 4.6 If frozen and blocked equipment, pipes, valves, etc. are detected, it is necessary to report them promptly, identify the cause of the blockage, and take appropriate action to resolve it ； 4.7 For equipment and pipelines that are temporarily shut down during winter, proper protective measures must be taken to prevent leaks or other issues related to the operation of these devices, ensuring that they can remain safe throughout the winter period ； Deactivated equipment, steam and water pipelines, and control valves must be protected against freezing. In particular, all water and steam valves that are not in use must have any accumulated water drained completely ； 4.8 In winter, in the event of a large-scale shutdown of the equipment, all heating devices, pipeline trace heaters, and steam supplies should continue to be supplied in small amounts. Similarly, all coolers and cold water systems should also remain fed with water in small quantities to keep the pipelines unobstructed and prevent them from freezing. Book Boy Database