Shenzhen Zhongnuo Testing 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 items not meeting inspection standards.
Do explosion-proof areas require regular inspections? Which standard specifies this?
In explosive hazard areas, the installation and use of explosion-proof equipment is a basic requirement. In addition, strict explosion-proof requirements must be met for wiring, grounding, ventilation, penetration through walls, and explosion venting and resistance in such locations.
Do such locations require regular inspections?
Yes. According to the AQ 3009-2007 "Electrical Safety and Explosion-Proof Regulations for Hazardous Areas," such locations must undergo regular explosion-proof inspections by a qualified third-party organization, in addition to daily checks, to ensure safety.

What certifications are required for regular inspections of explosion-proof electrical equipment?
The regular inspection of explosion-proof electrical equipment, as mentioned in the above text, conducted according to the AQ 3009-2007 "Electrical Safety and Explosion-proof Regulations for Hazardous Areas," must be carried out by a certified inspection center with explosion-proof expertise. This expertise is authorized by the CNAS and can be verified on the CNAS website.

After completion of the explosion-proof project, the facility must undergo inspection by a third-party institution with explosion-proof inspection qualifications (Shenzhen ZhongNuo Inspection Technology Co., Ltd.) before it can be put into use.
Blast-proof project acceptance criteria
1. The label of explosion-proof electrical equipment must indicate the explosion-proof qualification number issued by the inspection unit.
2. Types, levels, and groups of explosion-proof electrical equipment should comply with the design.
3. The housing of explosion-proof electrical equipment should be free of cracks and damage; the paint should be intact. The cover of the junction box should be securely fastened, and the fixing bolts and anti-loosening devices should be in place.
4. Ventilation and exhaust systems of positive pressure electrical equipment should be unobstructed, properly connected, and the installation locations of intake and outlet meet requirements.
5. Excess electrical equipment entry ports should be sealed as per regulations.
6. The installation of sealed devices in electrical circuits should comply with regulations.
7. The wiring engineering of intrinsic safety electrical equipment should comply with the design for the routing and elevation of the lines; the lines should be marked with a sky blue sign.
8. The grounding or neutral connection of electrical equipment, as well as static electricity protection wiring, should meet the design requirements and be firm and reliable.

How to conduct explosion-proof safety inspections for electrical equipment in use?
In accordance with the AQ3009-2007 "Electrical Explosion-Proof 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. The inspection items include the selection, installation, wiring, static electricity, grounding, and more of the explosion-proof equipment. The inspection methods include visual inspections, general inspections, and detailed inspections. This inspection is to be conducted on-site, requiring the customer to provide information such as the area of the explosion-proof zone, the number of electrical equipment, and the MSDS of the site. Following the on-site inspection, a report or explosion-proof improvement recommendations will be issued based on the actual situation.
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, etc. We also offer explosion-proof correction and construction services for non-compliant items identified during on-site inspections, with a wealth of successful cases and industry experience. If you happen to need an on-site explosion-proof electrical inspection report, feel free to message us for detailed communication.
On-Site Explosion-Proof Electrical Equipment Regular Inspection Consulting Service - Shenzhen Zhongnuo Inspection Technology Co., Ltd.