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Eliminate the security risks of feed enterprises

China's feed industry has become fine, large-scale and industrialized after extensive and rapid development. Feed industry is an industry with multiple quality and safety accidents. Lots of lessons have been shocking during the development over 30 years.

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Since the "Regulation of dust explosion-proof in feed processing system", that ZHENG CHANG participated in its formulation, came into being in 2002, the industry’s production management has been gradually standardized, accidents have been greatly minimized, but there are still many potential security risks.
In recent years, in order to fully improve the quality and safety level of feed industry, the state has strengthened its safety supervision. During the inspection process, many feed manufacturers in the country have been graded unqualified or forced to stop production and rectification. Some have been even blacklisted as problem companies.


Illegal acts and hidden dangers found in the process of supervision:
1. Electrical appliances are below the standard of the specified explosion-proof type and explosion-proof level.

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2. Bucket elevator’s shell and head are not grounded, no cross connection is made at the joint, and no explosion-proof area is set, which violet "Regulation of dust explosion-proof in feed processing system".  

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3. Dust removal system is not grounded, which violets "Safety specification for dust removal system used in hazardous dust explosion sites”.

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4. The electrical wiring in the area with explosive dust is not protected by pipe, which violets "Design criteria of power plant in hazardous explosion environment". 

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5. The electrical circuit in the area with explosive dust is not filled with non-inflammable materials, which violets "Regulation of dust explosion-proof in feed processing system".

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6. No cross connection is set at the junction of metal pipe, which violets “Regulation of dust explosion-proof”.

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7. The equipment bearing is not sealed, which violets "Regulation of dust explosion-proof in feed processing system".

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8. The residual dust thickness of filter bag is greater than 1mm, which violets " Safety specification for dust removal system used in hazardous dust explosion sites”.


9. The air volume regulator is not installed in the dust removal system, which violets "Regulation of dust explosion-proof in feed processing system".

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10. No explosion-proof area is set in the dust removal system, which violets "Code of Design on Building Fire Protection and Prevention".

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11. The door open to the outside of the boiler house is unopened, which violets “Code for boiler house design”.


12. No safety valve is installed in boiler drum, which violets “Regulations for safety technical supervision of stationary pressure vessels”.

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13. No emergency lighting and safety exit sign are set, which violets “General provisions for safety and health...

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