The reporter learned from the State Administration of Work Safety on February 15 that by the end of last year, 35,842 non-coal mines, hazardous chemicals and construction companies that had not submitted applications for safe production licenses would be implemented under the supervision of the safety supervision department. shut down. The State Administration of Work Safety must also carry out the rectification and acceptance of safety inspections for enterprises that have applied for production safety licenses.
It is understood that among these 30,000 companies, there are 8053 non-coal mining companies, 2866 hazardous chemical companies, and 24,923 construction enterprises, all of which belong to high-risk industries as stipulated in the Regulations on Work Safety Permits. None of them applied for a safety production license. According to the "Safety Production License Regulations" promulgated last year, the State Administration of Work Safety will start from now on, first of all, to revoke all the licenses of these companies; secondly, to stop the supply of electricity, stop the supply of raw materials, and stop supplying other public utilities; The list of companies is announced to the public. In order to prevent delays and closures in some localities, the State Administration of Work Safety has requested that it not wait until the last day to report and close the list. All provinces must submit their names in batches and submit the list in batches. The schedule must be strictly implemented.
For those enterprises that have submitted applications for production safety licenses, the State Administration of Work Safety has, in light of the situation in each industry and sector, put forward special emphasis on safety production in various industries and fields. Among them, non-coal mines are mainly focused on the prevention of well blowouts in oil and gas wells with high pressure, high hydrogen sulfide, and offshore oil operations. The key points for the rectification of hazardous chemicals are: leakage of liquid chlorine, liquefied gas, liquid ammonia, and highly toxic chemicals; phenomenon of "three violations" (violating regulations, illegal operation, and violation of labor discipline) of chemical plants; prevention of accidents Environmental pollution measures; relocation of chemical companies with insufficient safety distances.
According to statistics, as of December 31 last year, there were 115,662 non-coal mines in the country, 107,735 applications, with a declaration rate of 93.2%; 40,220 have been issued, and the rate of certification was 34.8%. Dangerous chemicals and fireworks should be issued with 30,219 units, 27,322 applications, with a declaration rate of 90.4%; 13,721 have been issued, and the rate of certification is 45.4%.
Plate Heat Exchanger
Plate heat exchangers can be divided into categories according to their function or characteristics. The most common type is the Plate And Frame Heat Exchanger, which uses gaskets between its plates to create a hermetic seal between them. Another type is the Brazed Plate Heat Exchanger, which is a sealed unit where the plates are joined together by a brazing process. There are also welded plate heat exchangers, involving the use of welding, as well as semi-welded and fully-welded models. Pillow Plate Heat Exchanger consists of two thin metal plates with a herringbone structure on them, the plates are welded together to form a series of interconnected pillow chambers.
Plate heat exchangers are typically used for applications including heating, cooling, heat recovery and condensing, and are especially useful for industrial applications as they are compact. efficient, cost-effective, easy to use and require minima maintenance. Additionally, plate heat exchangers can be used totransfer fluids of different temperatures quickly and in a wide range of flow rates.
Plate heat exchangers are highly suitable for industrial and domestic applications such as air conditioning and refrigeration, radiators and condensers. Oil cooling, chemical processes, food and beverage processing.
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