Shenzhen Zhongnuo Inspection Technology Co., Ltd. offers on-site explosion-proof electrical inspection, explosion-proof project acceptance services, and can provide explosion-proof rectification and construction services for non-compliant items.
ZhongNuo Inspection offers explosion-proof site safety inspection services.
1. Explosion-proof safety inspections for electrical equipment in hazardous areas
2. Explosive Dust Explosion Proof Testing
3. On-site Evaluation of Electrical Equipment in Dust Explosion Hazardous Areas
4. Explosion-proof quality inspection for hazardous explosive areas and explosion-proof safety acceptance inspection.
5. Explosion-proof electrical and non-electrical equipment, as well as consulting, retrofitting, construction, and acceptance of explosion-proof engineering.
6.防爆技术咨询 & Services

Do explosion-proof areas require regular inspections? Which standard specifies this?
In explosive hazardous areas, the installation and use of explosion-proof equipment is a basic requirement. In addition, there are strict explosion-proof requirements for wiring, grounding, ventilation, penetration through walls, and explosion venting and resistance in such locations.
Do these locations require regular inspections?
Yes. According to the AQ 3009-2007 "Electrical Safety and Explosion-proof Regulations for Hazardous Areas," in addition to daily inspections, these sites must undergo regular explosion-proof checks by a qualified third-party organization to ensure safety.

ZheNuo Inspection's On-site Explosion-Proof Inspection Service Scope:
Including industries or fields such as oil, chemicals, coal, shipping, ports, marine engineering, gas engineering, pharmaceuticals, machinery, textiles, electricity, light industry, grain processing and storage, and wood processing, where explosive gas environments and hazardous areas with explosive or flammable dust exist. Ensure the explosion-proof safety of dangerous explosive sites to safeguard the economic development of our country and the national economy.

Main contents of regular inspections 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 the equipment must pass the corresponding explosion-proof standard inspection and be deemed qualified before implementation. It is necessary to design the appropriate explosion-proof type, level, and temperature class for electrical equipment based on 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 functioning smoothly, or if the electrical equipment's casing has the potential to explode during operation, it can be extremely dangerous. Therefore, meticulous attention must be paid during installation, and it is crucial to follow the relevant standards strictly.
3. Line Inspection
Electrical equipment is often composed of a vast array of interconnected wires, which can be particularly complex. If the connections are not secure, or if there are incorrect connections, or due to insulation material peeling off the wires, it can lead to short circuits or overloads, potentially causing arcs or sparks. Therefore, it is crucial to strengthen inspections of the circuit, particularly the sealing of the wires, to ensure the connections meet the required standards.
4. Grounding Inspection
Electrical equipment generates static electricity during operation. When there's an excess of static, a discharge can result in sparks. Therefore, proper grounding protection is essential to promptly dissipate static electricity and prevent explosions. Common grounding methods include working grounding, static grounding, and lightning protection grounding, among others. Engineers must select the appropriate grounding method based on the specific working environment and ensure that the grounding is both safe and secure.
On-site explosion-proof electrical equipment regular inspection consulting service - Shenzhen Zhongnuo Inspection Technology Co., Ltd.