How can old factories be retrofitted with explosion protection?

With the rapid development of industry, safety in factories is getting more and more attention. Especially in old factories, the explosion-proof problem is especially prominent due to aging equipment, outdated technology and other reasons. In order to ensure safe production in factories, explosion-proof renovation of old factories has become necessary.

Causes of explosions in factories

1 Uncontrolled reaction causing an explosion

Some of the wrong operation may also lead to the container of gas out of control problems, like in the power outage, water outage, the container inside the reaction heat build-up, the reaction temperature rises sharply, resulting in the container’s internal pressure continues to increase, which in turn leads to the occurrence of explosive accidents, if the formal process of the reaction is more intense, then when the operator violates the closing of the cooling water valve, the polymerization of the super-pressure, super-high temperature, Will promote the rapid circulation of reactants, which in turn produces more static electricity, resulting in the generation of explosive problems, found in the investigation, some industrial gas explosion accidents is the cause of the workers in the attempt to try a new type of process when the reaction is out of control behavior, which leads to the reaction kettle explosion.

2 production equipment maintenance caused by fire and explosion

Industrial gases have more complex production equipment, and in the production pipeline will remain some dangerous gases, when the staff to carry out maintenance work, due to mechanical friction will produce static electricity, it is easy to trigger a fire, which will lead to the occurrence of explosive accidents. Industrial gas equipment and pipeline residual flammable and explosive, toxic and hazardous, corrosive substances, maintenance operations are frequent and inseparable from the fire, errors in the operation process, or not in accordance with the relevant standards for the implementation of isolation operations, for the cleaning device failed to replace and organize, as well as the emergence of a number of irregularities in the operation of the behavior, may lead to the problem of industrial gas explosions.

3 Gas leakage causing an explosion

When industrial flammable and explosive gases or toxic and hazardous gases leakage, mixed with air to reach a certain concentration, once in contact with the outside world with an open flame, is bound to cause a more violent explosion, combustion and explosion need to have two conditions: First, the concentration of flammable gases and air to form a mixture to reach the explosive limit, the formation of explosive mixtures, and secondly, the ability to ignite explosive mixtures of the flame, the direct source of ignition including: open flames, electric sparks, indirect sources of ignition: high temperature, light radiation, chemical reaction heat.

4 Gas cylinder explosion

Industrial production units if not in accordance with the provisions of the gas cylinder testing and management work, then the gas impulse, the imported gas will be chemical reaction with the residual gas in the bottle, in the case of violent reaction may also be an explosion. Acetylene cylinders filled with a serious shortage of acetone, causing an explosion; when the cylinder is overfilled will also cause an explosion, and finally, the mixed use of gas cylinders cause an explosion.

What can be done to prevent explosions?

1. For industrial enterprises that are prone to produce flammable and explosive, toxic and hazardous gases need to expand some safety facilities according to the project to ensure synchronized design and construction with the main project.

2. Staff in contact with flammable and explosive, toxic and hazardous gases must wear anti-static work clothes in the course of operation, and strictly enforce the production regulations of the enterprise.

3. In the production site, there must be “no open flame” and other warning signs. The warehouse for storing gas products must be well ventilated.

4. Install gas detection alarms to prevent gas leaks, fires, explosions and other accidents, although the accuracy of the gas detection alarms should be calibrated annually during use.

The need for explosion-proof retrofitting of factories

Aging equipment:

Equipment in older plants is prone to deterioration and wear and tear over time, which increases the risk of explosions.

Technological backwardness:

Explosion protection technology in some factories is relatively outdated and struggles to cope with the complex explosion risks of modern industrial production.

Personnel security:

Employees in some factories may lack the necessary knowledge of explosion protection and may be prone to mishandling the production process, increasing the risk of explosion.

Factory explosion-proof renovation points

1 correctly divided into explosion-hazardous areas, do a good job of explosion-proof electrical equipment selection

To recognize the importance of explosion-proof electrical equipment selection, according to the process and environmental conditions of the production device, in accordance with the standard requirements for the production of explosive hazardous areas of the production device, combined with the explosive hazardous areas of the explosive media mixtures that may occur in the explosive hazardous environment area and explosion-proof electrical equipment performance is fully understood in the context of the appropriate explosion-proof electrical equipment selection.

2 pay attention to the procurement of equipment, good quality of products

Explosion-proof electrical equipment types, in the selection of explosion-proof electrical equipment should be selected in accordance with national specifications and design requirements of the equipment, while carefully checking whether the manufacturer has a real and effective state-authorized testing organizations to provide the product certification and industrial products production license.

In product procurement, we should pay attention to the cost-effectiveness of the product to ensure that the quality and performance of the product to meet the requirements of the explosion-proof electrical equipment selection and production device installation site.

3 to ensure the installation quality of explosion-proof electrical equipment

To choose to have explosion-proof electrical installation qualifications and related installation experience of the construction unit for installation, explosion-proof electrical equipment installation quality directly affects the explosion-proof electrical equipment explosion-proof performance, so the installation of explosion-proof electrical equipment must be carried out in strict accordance with the provisions of the explosion-proof electrical equipment installation specifications, combined with the necessary installation instructions for the installation of explosion-proof electrical equipment.

4 to regularly overhaul and maintain explosion-proof electrical equipment

Enterprises should be arranged with explosion-proof electrical maintenance qualified technicians in accordance with the provisions of the regular maintenance and repair of explosion-proof electrical equipment, timely detection of problems in explosion-proof electrical equipment, to eliminate the use of age and the impact of the working environment caused by the failure of the hidden danger, maintenance personnel to standardize the operation, is strictly prohibited to damage explosion-proof electrical equipment on the operation of explosion-proof electrical equipment to ensure that the overall performance of the explosion-proof.

In order to ensure the safe operation of explosion-proof electrical equipment, it is necessary to establish a strict system of regular maintenance and repair of equipment.

5 Strengthening professional training and improving safety awareness

To ensure safe production in explosion-endangered places, the human factor is the first place, the enterprise’s competent leadership, technical personnel, procurement staff, maintenance personnel to seriously study the relevant national safety regulations, extensive and in-depth grasp of the explosion-proof electrical application of knowledge and the corresponding technical standards, and regular training in explosion-proof electrical technology.

Enterprises only use effective control measures, so that explosion-proof electrical equipment in the product manufacturing, selection, procurement, installation, maintenance and use of various applications to ensure its overall explosion-proof safety performance, in order to ultimately protect the use of explosion-proof electrical equipment safety.