** Dealing with non-conforming requirements is a major threat

A poultry company in Dehui City, Jilin Province, had a fire on the early morning of the 3rd. According to news from the Fire Department of the Ministry of Public Security, the accident was caused by a leak.

**(NH3), also known as anhydrous ammonia, is obtained from ammonia gas by pressure or cooling. ** Widely used in industry, and it is corrosive and volatile, so the incidence of chemical accidents is quite high. In case of high heat, the internal pressure of the container increases and there is a risk of cracking and explosion.

According to experts, it has entered the high temperature season. Due to changes in the external environment and the heavy use of ** refrigeration, ** accidents have entered a high period.

Uses ** Refrigeration is cheap and efficient** It is mainly used for the production of **, urea and other chemical fertilizers. It can also be used as a raw material for medicines and pesticides. In the defense industry, it is used to make rockets and propellants. In the food processing industry such as poultry companies, ** is used in refrigeration.

The five frozen storages with a total capacity of 1,000 tons of Hunan Xiangjia Animal Husbandry Co., Ltd. (hereinafter referred to as “Xiang Jia Animal Husbandry”), a large-scale poultry breeding enterprise in Hunan, use ** refrigeration.

According to Yu Jiawen, chairman of Xiangjia Animal Husbandry, the benefits of refrigeration with ammonia as a raw material are significantly higher than those with Freon as the raw material. The cooling effect is good, the price is relatively low, and the maintenance cost is low, and the large-scale refrigeration is generally ammonia refrigeration.

Although ** is cheap and has high cooling efficiency, it is corrosive and flammable and explosive. According to experts, it has entered the high temperature season. Due to changes in the external environment and the heavy use of ** refrigeration, ** accidents have entered a high period.

The accidents occurred in the food processing industry. According to statistics, the vast majority of accidents occurred in food processing companies.

The Dehui Baoyuanfeng Poultry Co., Ltd. accident that happened this time had a ** leakage accident in 2010, resulting in smoldering of 1,800 square meters of warehouses. In August 2011, ammonia leakage occurred in another meat processing plant in Dehui City, and 13 employees were poisoned to varying degrees.

Similar accidents occur from time to time in other places.

In April 2013, a cooling plant leaked from a food factory in Renshou County, Sichuan Province, causing a total of 4 deaths. In the same month, an ammonia leakage accident occurred in the frozen warehouse of the Linyi County Jinyu Meat Products Factory in Shandong Province, 16 tons of frozen meat was contaminated, and more than 40 workers were poisoned and sent to the doctor. In May, an ammonia leakage accident occurred in the liquid ammonia tank of Qiongzhong Shengyi Meat Processing Co., Ltd. in Xinwei Farm, Qiongzhong County, Hainan Province. The fire department evacuated more than 400 people.

Hunan as a hidden danger of accident monitoring Hunan Zhuo Liang, general manager of Safety Science Research Co., Ltd. introduced that ammonia was classified as a toxic gas by the state. Low concentrations of ammonia have irritating effects on the mucous membranes. High concentrations of ammonia can cause tissue lysis and necrosis. Severe cases can cause death.

How to manage **? Jiang Zhuoliang said that ** has been included in the "First List of Hazardous Chemicals with Major Regulations." Shandong Province, Dalian City, Liaoning Province, Beijing Municipality, Sichuan Guangyuan, etc. have formulated more specific local management regulations, and Sinopec Group has formulated the “Safety Management Regulations for Production, Storage, and Transportation of Production and Use”. Hunan Province also promulgated the “Certificate for Identifying Hidden Concerns for Production Safety Incidents of Hazardous Chemicals Production and Operation Units (Trial Implementation)”, and included major production or storage, production, handling, leaking, and other consequences that do not meet relevant requirements. Hidden accidents.

Hidden fears ** more difficult to monitor Jiang Zhuoliang said that although all parties pay attention to the dangers of **, due to the large number of facilities that use **, the state of technology and equipment varies greatly, and the level of safety management and the quality of employees are uneven. It is difficult to regulate.

Jiang Zhuoliang said that, in particular, some slaughter and processing, refrigeration companies behind the production facilities, the management level is low, ** refrigeration operators lack of appropriate training, safety technology level is not high, the knowledge of prevention and control of leakage is less, easily lead to ** leaks or even explosions.

Longview Information analyst Wang Fei believes that the storage and maintenance of equipment must be checked regularly and on time.

[response]

After the accident, people should transfer to the upper outlet. Environmental protection expert Dong Jinshi said that if ammonia is to be kept in a liquid state, it will require great pressure. When the pressure is extremely high, it will be as explosive as a *** when it encounters an external impact or is overheated.

He said that after a leak incident, people must not stay in the breeze and can shift to the upper air outlet, away from the source of the explosion. In addition, ammonia is a non-flammable gas, has a certain degree of volatility, will quickly spread to the air, the concentration of diluted, its impact will be greatly reduced, the surrounding residents do not need to panic.