Shenzhen Zhongnuo Inspection Technology Co., Ltd. offers on-site explosion-proof electrical inspection, explosion-proof project acceptance services, and can also provide explosion-proof rectification and construction services for non-compliant items.
How to conduct explosion-proof safety inspections for electrical equipment in use?
In accordance with the AQ3009-2007 "Electrical Explosion Protection Safety Regulations for Hazardous Areas," explosion-proof electrical equipment in use must undergo a regular explosion-proof inspection at least every 3 years to ensure their explosion-proof performance. Inspection items include the selection, installation, wiring, static electricity, grounding, and more of explosion-proof equipment. Inspection methods include visual inspection, general inspection, and detailed inspection. This inspection is to be conducted on-site, requiring the customer to provide information on the area of the explosion-proof zone and the number of electrical equipment on-site, as well as the MSDS and other relevant information. Following the on-site inspection, a report or explosion-proof correction suggestions will be issued based on the actual conditions.
ZhongNuo Inspection has provided on-site explosion-proof electrical inspection services for various facilities such as gas stations, oil depots, food factories, feed mills, chemical plants, and more. We also offer explosion-proof整改 and construction services for non-compliant items identified during on-site inspections, with a wealth of successful cases and industry experience. If you need to conduct on-site explosion-proof electrical inspection reports, feel free to private message us for detailed communication.

Major contents of regular inspection for explosion-proof electrical equipment
1. Model Inspection
In strict accordance with relevant laws, the explosion-proof markings on explosion-proof electrical equipment must be standardized, and they must pass the relevant explosion-proof standard inspections with qualifications before implementation. The design of the explosion-proof type, level, and temperature group of electrical equipment should be tailored to the specific working environment.
2. Installation Inspection
During electrical equipment installation, any oversight can potentially lead to losses. For instance, if the ventilation and exhaust system is not properly installed and not fully functional, or if the electrical equipment's casing has the potential to explode during operation, these are risks to be taken seriously. Therefore, meticulous attention must be paid during installation, and it is essential to follow relevant standards for proper setup.
3. Line Inspection
Electrical equipment is often composed of a large number of interconnected wires, which can be particularly complex. If they are not securely connected, or if there are incorrect connections, or due to the insulation layer of the wires peeling off, it can lead to short circuits or overloads, potentially causing arcs or sparks. Therefore, it is crucial to strengthen the inspection of circuit connections, especially the sealing of the wires, to ensure that the connections meet the requirements.
4. Grounding Inspection
Electrical equipment generates static electricity during operation. If there is too much static, sparks may occur upon discharge. Therefore, proper grounding protection must be implemented to timely dissipate static electricity and prevent explosions. Common grounding methods include working grounding, static grounding, and lightning protection grounding, etc. Engineers must select the appropriate grounding method based on the specific working environment, ensuring that the grounding is both safe and secure.

The standards referenced in the "Electrical Explosion Proof Inspection Report" issued from regular inspections of explosion-proof electrical equipment include but are not limited to:
GB50058-2014 Specification for Design of Electrical Installations in Explosive Hazardous Environments
GB 50257-2014 Code for Construction and Acceptance of Electrical Installation Works in Explosive and Fire Hazardous Environments
GB/T3836.15-2017 "Electrical Equipment for Explosive Gas Atmospheres — Part 15: Electrical Installations in Hazardous Areas (Excluding Mines)"
AQ3009-2007 Electrical Explosion Protection Safety Regulations for Hazardous Areas

Do you need to conduct an explosion-proof electrical inspection and acceptance report after the construction site is completed? What standards are followed?
The explosion-proof performance of explosion-proof products is not just about the equipment itself; it also involves the selection of the equipment, the installation method, the on-site wiring, and the daily maintenance and care methods.
Improper selection and installation of explosion-proof equipment, non-compliant field wiring with standard requirements, and daily maintenance damage that compromise the equipment's explosion-proof properties can all lead to the loss of explosion-proof capabilities, posing a risk of explosion.
Therefore, the installation and acceptance of the newly introduced explosion-proof equipment is particularly necessary and important.
The explosion-proof acceptance standards are primarily based on AQ 3009, GB/T3836.15, GB/T3836.16, GB 50257, GB 50058, and others, with a corresponding explosion-proof electrical inspection report issued.
After the installation and acceptance of explosion-proof equipment, it is not a one-time task. To ensure the equipment operates effectively and can be safely used in hazardous areas for an extended period, continuous supervision and regular inspections of the in-use explosion-proof equipment are necessary.
The interval for regular inspections typically does not exceed 3 years.
ZhongNuo Inspection has provided on-site explosion-proof electrical inspection and explosion-proof renovation services for various gas stations, gas stations, oil depots, food factories, feed factories, chemical plants, etc., with a wealth of successful cases and industry experience.
If you happen to need a report for on-site explosion-proof electrical inspections, feel free to DM us for a detailed discussion.
On-site Explosion-Proof Electrical Equipment Regular Inspection Consulting Service - Shenzhen ZhongNuo Testing Technology Co., Ltd.