Why do chemical explosions occur frequently from June to August?

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A review of past chemical explosion incidents shows that such explosions occur most frequently between June and August. Why has summer become a peak period for chemical explosions, and how can we avoid them? 　　There are natural disaster factors associated with frequent chemical explosions in certain months. Data shows that during the hot summer months, although ordinary fires decrease, chemical explosions, lightning strikes and other types of fires occur more easily. Once such fires break out, they often result in heavy losses, high levels of danger, and severe casualties. Statistical data shows that summer is a period with a high incidence of various work safety accidents in the petrochemical industry. 　　News reports confirm this claim; of the 16 major chemical explosions that occurred from 2006 to 2015, 9 took place between June and August, accounting for more than half of them. 　　Why do chemical explosions occur more frequently in summer? Experts explain that the most direct reason is that high temperatures in summer cause various flammable gases to evaporate easily; in the event of static electricity generating sparks or improper operations, this can lead to fires. Secondly, during the summer, there is heavy rainfall and increased humidity. In storage areas with poor ventilation, certain chemical substances can absorb moisture when exposed to humidity, which can lead to spontaneous combustion. Materials such as oilcloth and celluloid, which is used in the production of table tennis balls, can catch fire spontaneously when exposed to high temperatures and humidity as they are unable to dissipate heat ； Although substances such as lime and bleach do not burn on their own, they can accumulate heat at high temperatures, causing the flammable materials around them to reach their ignition point and catch fire. There are also some chemicals with high volatility, such as banana oil, which can evaporate and catch fire when exposed to the scorching sun. 　　Apart from natural disasters, man-made factors also play a role in causing explosions. Zhang Mingguo, a professor at Beijing University of Chemical Technology and a supervisor of doctoral students, told reporters from China Business News that in chemical disaster accidents, man-made factors are more significant than natural disasters. For example, managerial negligence, improper employee operations, neglect of on-site inspections, and leaving one’s post to sleep are all potential causes of serious accidents. 　　By analyzing the units and locations where fires occur frequently, it is easy to see that lax management systems are a common feature among them. Failing to inspect goods upon arrival, bringing fire sources into the warehouse during transportation, staff lighting fires for cooking in the warehouse area, or using open flames illegally during maintenance work – all these are causes of fires. Lighting fixtures such as iodine-tungsten lamps and fluorescent lamps, when placed close to items, can cause them to catch fire; additionally, heat generated by ballasts can also lead to fires. At the same time, many facilities that store chemical raw materials have a low fire resistance rating, large building spans, and lack ceilings ； The internal space is large, with no fire partitions; buildings and foundations are predetermined, so factors such as fire separation distances, fire access routes, and fire water sources are basically not taken into account. In some old factories and aged warehouses, aging electrical wiring, broken insulation tubes, and exposed wires lead to damaged insulation and frequent short circuits. 　　During the hot summer months, there is scorching sunlight during the day and mosquito bites at night, which can also lead employees to reduce the frequency of on-site inspections. Little did they know, some production accidents do not occur suddenly without any warning; there are often subtle signs in advance. For example, with some flammable and explosive gases, minor leaks may occur first; if these leaks are not detected and addressed in a timely manner, an explosion will take place once the concentration of the gas reaches its critical level. 　　In summer, the days are long and the nights short, often leading to insufficient sleep. This is especially true for those on night shifts; some employees even leave their posts in order to find a suitable place to sleep. Imagine, in the case of high-risk chemical manufacturing processes, if the operation of the equipment is not under effective monitoring, hazardous factors will accumulate within the system; it’s like an unattended car driving on a highway, with accidents potentially occurring at any moment. 　　Managing the hazards of chemical substances ultimately means managing the enterprise and its managers. Repeating prohibitions over and over again is important, but ensuring that policies are formulated reasonably and that those regulations are actually implemented is even more crucial. At the same time, efficient monitoring methods should be established. Only when humans can monitor the machines and the machines can issue alerts in case of human negligence is it a truly safe and effective monitoring method.