Shenzhen ZhongNuo Inspection & 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.
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 Code for Electrical Explosion Protection in Hazardous Areas" (effective as of January 1, 2008): Electrical equipment used in hazardous areas shall undergo initial and periodic inspections. Inspections must be conducted by a qualified explosion-proof inspection agency, with intervals generally not exceeding 3 years. Enterprises should take corrective actions promptly based on the inspection results and file the Report and the rectification status with the Safety Production Supervision and Management Department.
The "AQ 3009-2007 Electrical Safety and Explosion-Proof Standard for Hazardous Areas" serves as a Chinese industry standard, with the preface clearly stating that Chapters 4, 5, 6, and 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!

AQ3009 "Electrical Explosion Protection Safety Regulations for Hazardous Places" stipulates that regular inspections of hazardous places should be entrusted to safety production inspection institutions with explosion-proof qualifications, with intervals generally not exceeding 3 years. We offer on-site explosion-proof inspection consulting services, covering electrical explosion protection safety, anti-static, dust explosion hazard places, flammable gas, and safety equipment and facility inspections. We are responsible for explosion-proof equipment design and selection, maintenance and repair of in-use explosion-proof equipment, on-site explosion-proof safety inspections in explosive gas environments and flammable dust environments, ensuring safe production for enterprises producing hazardous chemicals and places with explosion hazards.

Dust Explosion Hazardous Area Safety Inspection Standards
GB15577-2018 Dust Explosion Protection Regulations
GB17440-2008 Grain Processing Enterprise Dust Explosion Prevention Safety Standard
GB17918-2009 Dust Explosion Prevention Safety Standard for Bulk Grain Handling Systems at Ports
AQ4229-2013 Grain Vertical Silo Dust Explosion Prevention and Safety Standard
AQ4230-2013 Dust Explosion Prevention Safety Standard for Grain Flat Storage Buildings
AQ4232-2013 Specification for Dust Explosion Prevention in Plastic Production Systems
GB18245-2000 Dust Explosion Prevention Safety Standard for Processing Systems
GB19081-2008 Feed Processing System Dust Explosion Prevention Safety Specification
GB16543-2008 Specification for Dust Explosion Prevention in Coal Injection System of Blast Furnace
GB17269-2003 Aluminum Processing System Dust Explosion Prevention Safety Specification
GB/T 16505-1995 Dust Explosion Relief Guidelines
GB/T 17919-2009 Guide for Explosion-Proof Dust Collectors in Hazardous Dust-Explosive Areas
General Guidelines for Preventing Static Electricity Accidents - GB12158-2006
AQ3009-2007 Electrical Explosion-Proof Safety Code for Hazardous Areas
GB 50058-2014 Code for Design of Electrical Installations for Explosive and Fire Hazardous Locations
GB50257-2014 Code for Electrical Installation Engineering in Explosive and Flammable Gas and Dust Hazardous Environments for Construction and Acceptance

Regular inspection standards and cycles for explosion-proof electrical equipment
With the increasing popularity of explosion-proof electrical equipment, many hazardous explosive areas have installed and utilized explosion-proof electrical appliances.
Many end-users believe that installing explosion-proof electrical equipment in explosive hazard areas is all that's needed.
In many cases, so-called explosion-proof electrical equipment lacks a valid explosion-proof certificate, or the certificate has expired or is fake. The label does not match the explosion-proof certificate.
Selection of explosion-proof types is incorrect, misuse of gas explosion-proof electrical equipment and dust explosion-proof electrical equipment, improper wiring of explosion-proof electrical equipment installation, lack of grounding of the circuit.
Holes drilled in explosion-proof casings and button installations can cause explosion-proof failure. Long-term exposure to corrosion, high temperatures, and intense vibrations can also compromise explosion-proof electrical equipment.
For explosion-proof electrical equipment in use, the AQ 3009-2007 "Safety Regulations for Electrical Equipment in Hazardous Areas" standard stipulates:
Electrical equipment used in explosion-proof environments should be inspected by a center with explosion-proof professional qualifications at least every 3 years for its performance, installation, maintenance, etc.
Immediate corrective actions must be taken for non-conformities found during inspections, and the inspection report and corrective measures must be filed with the Safety Production Supervision and Management Department.
Conducting explosion-proof field inspections on in-use explosion-proof electrical equipment is not only a requirement of the safety production department, but also a testament to the company's commitment to its own life and property safety.
On-Site Explosion-Proof Electrical Equipment Regular Inspection Consultancy Service - Shenzhen ZhongNuo Inspection Technology Co., Ltd.