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.
ZhongNuo Inspection's on-site explosion-proof inspection service scope:
Explosive gas environments and hazardous areas with flammable or combustible dust in industries such as oil, chemicals, coal, shipping, ports, marine engineering, gas engineering, pharmaceuticals, machinery, textiles, electricity, light industry, grain processing and storage, and wood processing must ensure the safety of explosion-proof measures to safeguard the economic development of our country and its people.

Regulations and laws regarding regular inspections of explosion-proof electrical equipment:
Flameproof equipment used in explosive hazardous areas throughout its entire lifecycle, including production, installation, operation, inspection, maintenance, and withdrawal from the market.
Regular inspections provide a robust guarantee for their usage condition and explosion-proof safety performance. Corresponding regulations are also established by our country's relevant laws and regulations.
There is a clear stipulation in the standard AQ3009-2007 "Electrical Safety and Explosion-proof Regulations for Hazardous Areas":
Regular inspections should be entrusted to safety production inspection agencies with explosion-proof professional qualifications, with intervals generally not exceeding 3 years.
The company should promptly implement corrective measures based on the inspection results and file the inspection report and the rectification status with the安全生产监督管理部门.
The preface of AQ3009-2007 "Electrical Safety and Explosion-proof Regulations for Hazardous Areas" also explicitly states that Chapters 4, 5, 6, and 7 are mandatory and must be strictly enforced. Therefore, such safety regulations are part of the legal and regulatory framework and must be strictly enforced as mandatory!

Application Agency for Explosion-Proof Electrical Construction Completion Inspection Report
It is widely known that after electrical work is completed in explosive hazard areas, a third-party organization must conduct a final inspection before the facility can be put into use. Moreover, in the future, besides regular checks by the company itself, a facility with explosion-proof inspection qualifications must perform a routine check every three years.
What are the main items inspected during the completion acceptance here?
1. Inspect if the explosion-proof electrical equipment has a label, an Ex marking, and clear identification of the type, class, and group of the explosion-proof equipment. Is the label marked with the explosion-proof certification number issued by the inspection unit?
2. Verify that the type, classification, group, environmental conditions, and special markings of explosion-proof electrical equipment comply with regulations.
3. Inspect the housing of explosion-proof electrical equipment for cracks or damage; check if the paint is intact, the junction box cover is securely fastened, and the fixing bolts and anti-loosening devices are in place.
4. Check for oil leakage and seepage in oil-filled electrical equipment, and ensure the oil level meets the required specifications.
5. Ventilation and exhaust systems for explosion-proof electrical equipment with positive pressure should be unobstructed, connections should be correct, and the installation positions of the inlet and outlet should meet the requirements.
6. Are the extra entry ports of the explosion-proof electrical equipment properly sealed in accordance with regulations?
7. Installation of sealed or insulated devices in electrical circuits must comply with regulations.
8. The wiring engineering of intrinsic safety explosion-proof electrical equipment shall comply with the design requirements for the route and elevation of the lines; the lines should be marked with a sky blue sign.
9. The grounding or earthing of explosion-proof electrical equipment, as well as static electricity grounding, should meet the design requirements and be firm and reliable.
10. At the time of completion and acceptance, the corresponding documents, materials, manufacturer's product user manuals, test records, qualification certificates, and installation drawings, as well as other technical documents, should be submitted.
11. At the time of inspection, the following measurement records should also be submitted:
Measurement record of the single air gap for the stator and rotor of explosion-proof motors with increased safety.
(2) Adjustment records for pressure-relief devices protecting explosion-proof electrical equipment, such as wind pressure and air pressure relays; high-temperature records of the equipment's housing during trial operation; and test records of the grounding resistance for static-proof grounding.
12. Record of explosion-proof electrical equipment operation
The shell temperature of explosion-proof electrical equipment, including the internal temperature of intrinsic safety and non-sparking explosion-proof electrical equipment, should not exceed the specified limit.
(2) After the internal wiring of the junction box is securely fastened, the electrical clearances and creepage distances between the live parts and the metal housing should comply with the regulations.
(3) The exhaust of explosion-proof electrical equipment with positive pressure should not emit sparks. The micro-pressure relay should operate reliably when reducing wind pressure and air pressure.
(4) The protective devices and interlocking devices of explosion-proof electrical equipment should operate correctly and reliably.

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, etc., of explosion-proof equipment. The inspection methods include visual inspections, general inspections, and detailed inspections. This requires on-site inspections, where the client must provide information such as the area of the explosion-proof zone, the number of electrical equipment, and the MSDS on-site. After the on-site inspection is completed, explosion-proof improvement recommendations or inspection reports 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 factories, and chemical plants. We also offer explosion-proof整改 and construction services for items that fail on-site inspections, with a wealth of successful cases and industry experience. If you need an on-site explosion-proof electrical inspection report, feel free to private message us for further discussion.
On-site Explosion-proof Electrical Equipment Regular Inspection Consulting Service - Shenzhen Zhongnuo Inspection Technology Co., Ltd.