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 non-compliant items.
Shenzhen Zhongnuo Testing Technology Co., Ltd. summarizes the past experience in explosion-proof electrical inspection, the main items and contents of AQ3009 explosion-proof electrical inspection.
In accordance with Section 7 of AQ3009-2007 "Safety Regulations for Electrical Explosion-Proof in Hazardous Areas" (effective as of January 1, 2008): Electrical equipment used in hazardous areas must undergo initial and periodic inspections. These inspections must be conducted by a qualified explosion-proof inspection agency, with intervals generally not exceeding 3 years. Enterprises shall take corrective actions promptly based on the inspection results and file the Report and the corrective measures with the safety supervision and management department for production and operation.
The "AQ 3009-2007 Electrical Safety and Explosion-Proof Standard for Hazardous Areas" is a Chinese industry standard. The preface of the standard explicitly states that Chapter 4, Chapter 5, Chapter 6, and Chapter 7 are mandatory and must be strictly enforced. Therefore, similar safety regulations are part of the legal and regulatory framework and must be strictly enforced!

Required Documents for On-Site Explosion-Proof Inspection Application
1. Area of explosion-proof site.
2. Explosion Hazard Area Division Map
3. Names of explosive hazardous substances within the relevant danger zones and their Material Safety Data Sheets (MSDS)
4. Explosion-proof electrical products list, including installation area and tag number information
5. Copies of explosion-proof electrical products' explosion-proof certification
6. Instructions for Special Use Conditions of Explosion-Proof Electrical Equipment
7. Descriptive Technical Document on Intrinsically Safe Systems
8. Documentation regarding installation quality

Do you need to conduct an explosion-proof electrical inspection and acceptance report after the explosion-proof site construction? What standards are followed?
The explosion-proof performance of explosion-proof products is not just about the equipment itself; it also involves the equipment selection, installation methods, on-site wiring, and daily maintenance and care practices.
Improper selection and installation of explosion-proof equipment, non-compliant site wiring with standards, and daily maintenance damage that compromise the explosion-proof properties of the equipment 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 other standards, with an explosion-proof electrical inspection report issued.
After the installation and acceptance of explosion-proof equipment, it is not a one-time solution. 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 generally does not exceed 3 years.
ZhongNuo Inspection has provided on-site explosion-proof electrical inspection and explosion-proof retrofitting construction services for various gas stations, oil stations, oil depots, food factories, feed mills, chemical plants, etc., boasting a wealth of successful cases and industry experience.
If you happen to need a防爆电气检查报告 for such on-site requirements, feel free to send us a private message for specific discussion.

We understand that facilities involving explosive gases and dusts require regular explosion-proof electrical inspections. What exactly is checked during these inspections?
Electrical Explosion-Proof Safety Inspection 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 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 information for electrical equipment based on the specific working environment.
2. Installation Inspection
During the installation of electrical equipment, any oversight can potentially lead to losses. For instance, if the ventilation and exhaust system is not properly installed and is not sufficiently unobstructed, as well as the risk of explosion with the electrical equipment's housing during electrical operations, it is crucial to install with utmost care and precision, adhering to relevant standards.
3. Wire inspection
Electrical equipment is often composed of numerous wires interconnected, often very complex. If not securely connected, or if there are incorrect connections, or due to wire insulation breakdown, there could be short circuits or overloads, leading to arcs or sparks. Therefore, it's crucial to enhance inspections of circuitry, particularly the sealing of wires, to ensure connections meet specifications.
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, ensuring they operate in a normal state at all times. For dangerous sites, electrical explosion-proof safety inspections should be scientifically developed and keep pace with the times, enhancing the discovery and invention of new inspection methods and means. Continuously apply new knowledge, technology, and management methods to prevent potential dangers and eliminate unsafe factors that are exposed.
On-site Explosion-proof Electrical Equipment Regular Inspection Consultancy Service - Shenzhen ZhongNuo Testing Technology Co., Ltd.