Shenzhen ZhongNuo Testing Technology Co., Ltd. offers on-site explosion-proof electrical inspection and explosion-proof project acceptance services, as well as explosion-proof rectification and construction services for items not meeting inspection standards.
What certifications are required for regular inspections of explosion-proof electrical equipment?
The regular inspections of explosion-proof electrical equipment, as mentioned in the previous text, according to the AQ 3009-2007 "Electrical Safety and Explosion Proof Standards for Hazardous Areas," must be conducted by a testing center with explosion-proof professional qualifications. This qualification is authorized by the CNAS and can be verified on the CNAS website.

We understand that since these locations involving explosive gases and dusts require regular explosion-proof electrical inspections, what exactly is checked during these inspections?
Electrical Explosion-Proof Safety Inspections for Hazardous Areas
1. Model Inspection
In strict accordance with relevant laws, the explosion-proof markings on explosion-proof electrical equipment must be standardized, and it can only be implemented after passing the relevant explosion-proof standard inspection with qualification. It is necessary to design the appropriate explosion-proof type, level, and temperature group information for electrical equipment based on the specific working environment.
2. Installation Inspection
During electrical equipment installation, any oversight can lead to potential losses. For instance, if the ventilation and exhaust system is not properly installed and not fully functional, and if the electrical equipment's casing has the possibility of explosion during electrical operation, it's crucial to install with the utmost precision, adhering strictly to relevant standards.
3. Line Inspection
Electrical equipment is often composed of a large number of interconnected wires, which can be particularly complex. If not securely connected, or if there are incorrect connections, or if the insulation of the wires has worn off, it may lead to short circuits or overloads, resulting in arcs or sparks. Therefore, it is crucial to strengthen the inspection of circuitry, especially the sealed connections, to ensure that the wiring meets the required standards.
4. Grounding Inspection
Electrical equipment generates static electricity during operation. If there's an excessive amount of static, sparks may occur upon discharge. 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, etc. Engineers must select the appropriate grounding method based on the specific working environment and ensure that the grounding is both safe and secure.
Chemical companies must regularly maintain and inspect explosion-proof electrical and static electricity prevention facilities in hazardous areas to ensure they are always operating in a normal state. For hazardous locations, electrical explosion-proof safety inspections should be scientifically developed, keep pace with the times, enhance the discovery and invention of new inspection methods and means, continuously apply new knowledge and technology, as well as management methods, to prevent potential dangers and eliminate unsafe factors.

How often is the regular explosion-proof electrical equipment inspection conducted?
With the widespread use of explosion-proof electrical equipment, many explosive hazardous areas have adopted such devices. Many end-users believe that installing explosion-proof electrical equipment in hazardous areas is sufficient. However, in many cases, so-called explosion-proof electrical equipment lacks valid explosion-proof certification, or the certification has expired or is fraudulent. There may be discrepancies between the markings and the explosion-proof certification, incorrect selection of explosion-proof types, the misuse of gas and dust explosion-proof equipment, drilling holes in explosion-proof enclosures, long-term corrosion, high temperatures, and intense vibrations. In terms of explosion-proof electrical equipment in use, the AQ 3009-2007 "Safety Rules for Electrical Equipment in Hazardous Areas" stipulates that explosion-proof electrical equipment in use should be inspected by a specialized explosion-proof inspection center at least every 3 years for performance, installation, and maintenance. Any non-compliance issues must be addressed promptly, and the inspection report and corrective actions must be recorded with the安全生产监督管理部门. Conducting on-site inspections of explosion-proof electrical equipment in use is not only a requirement of the safety production department but also a reflection of the company's emphasis on its own life and property safety.
ZhongNuo Inspection has provided on-site explosion-proof inspections and modification construction services for various facilities such as gas stations, oil depots, food factories, feed mills, and chemical plants, with a wealth of successful cases and industry experience.
If you happen to need a report on explosion-proof electrical inspections for such on-site work, feel free to message us for a detailed discussion.

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," electrical explosion-proof equipment in use must undergo a periodic 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. 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 on-site. Following the on-site inspection, a report on explosion-proof recommendations or an explosion-proof inspection report will be issued based on the actual conditions.
Zhenuo Inspection has provided on-site explosion-proof electrical inspection services for various gas stations, petrol stations, oil depots, food factories, feed factories, chemical plants, etc. We also offer explosion-proof整改 and construction services for items not meeting on-site explosion-proof inspection standards, 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 DM us for detailed communication.
On-Site Explosion-Proof Electrical Equipment Regular Inspection Consulting Service - Shenzhen ZhongNuo Inspection Technology Co., Ltd.