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 that fail inspection.
Shenzhen Zhongnuo Inspection Technology Co., Ltd. summarizes its past experience in explosion-proof electrical inspection. The main items and contents of the AQ3009 explosion-proof electrical inspection include:
In accordance with Section 7 of AQ3009-2007 "Electrical Explosion-Proof Safety Regulations for Hazardous Places" (implemented 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 shall take corrective actions based on the inspection results in a timely manner and file the Report and the corrective measures with the department of安全生产 supervision and management.
The "AQ 3009-2007 Specification for Electrical Safety and Explosion-Proof in Hazardous Areas" is a Chinese industry standard. The preface of the standard explicitly states that Chapters 4, 5, 6, and 7 are mandatory and must be strictly enforced. Therefore, similar safety regulations are also part of the legal and regulatory framework and must be strictly enforced!

ZhongNuo Inspection offers a range of explosion-proof site safety inspection services:
1. Explosion-proof safety inspections for electrical equipment in hazardous areas
2. Explosive Dust Explosion Proof Testing
3. On-site Assessment of Electrical Equipment in Dust Explosion Areas
4. Explosion-proof quality inspection for hazardous explosive site and explosion-proof safety acceptance inspection.
5. Explosion-proof electrical and non-electrical equipment, as well as explosion-proof engineering consultation/renovation/construction/inspection.
6.防爆技术咨询 services.

Shenzhen ZhongNuo Testing Technology Co., Ltd. summarizes the experience from previous explosion-proof electrical inspections and compiles the following common non-compliance items observed during on-site explosion-proof checks for your reference.
Common phenomena include:
1. Corrosion and damage to explosion-proof casings. The protective casings of explosion-proof electrical equipment are damaged due to corrosion from the surrounding medium, leading to rust穿孔, structural deterioration, and loss of original strength, thereby rendering the explosion-proof electrical equipment ineffective in preventing explosions.
2. Explosion-proof protective casing chemically corroded and damaged. The metallic casing becomes electrified in situations like electrical leakage or potential drift, and when the electrified metal contacts the air medium, it acts like a battery, causing the metallic casing to corrode. This leads to the loss of the electrical appliance's explosion-proof capability.
3. Damage from external forces and mechanical impact. Includes damage to the protective casing due to collisions with other equipment or mechanical materials on the worksite, as well as casing damage caused by excessive force during installation.
4. Shell damage due to overtemperature causing cracking. In cold regions, damage to the protective shell is caused by cold shrinkage and deformation of the protective shell material due to climate adaptation issues, leading to shell cracking.
5. Damage due to improper installation. Damage, loss, and failure of protective functions resulting from the failure to install explosion-proof electrical equipment in accordance with the specified requirements.
6. Inadequate sealing, including improper handling of sealing materials during installation and maintenance, loose joint of sealing surfaces, damaged sealing components, unsuitable or missing fasteners for sealing fixation, all contribute to inadequate or weak explosion-proof performance.
7. Quality issues with explosion-proof electrical equipment, including substandard material for the explosion-proof housing and an unreasonable structural design that fails to meet the required load-bearing capacity; internal wiring is prone to loosening, and an impractical internal circuit can easily cause sparking or overheating; unreasonable mechanical structure components, excessive equipment temperature, and internal water accumulation may lead to malfunctions in explosion-proof electrical equipment.
8. Due to actual changes in hazardous areas caused by the alteration of production facilities, the electrical equipment in the area has not been promptly upgraded to explosion-proof equipment.
9. Incorrect selection of explosion-proof electrical equipment; intrinsic safety electrical equipment used with non-intrinsic safety voltage, and increased safety enclosures used for producing light, heat, and other circuitry equipment.
As an end-user of explosion-proof electrical equipment, it is necessary to conduct regular explosion-proof inspections even if explosion-proof electrical equipment is installed and used in explosive hazardous areas. This is both a requirement of various departments and a high level of concern for personnel and property safety.

Zhenuo Inspection's On-Site Explosion Proof Inspection Service Scope:
Including industries or fields such as oil, chemicals, coal, shipping, ports, marine engineering, gas engineering, pharmaceuticals, machinery, textiles, electricity, light industry, grain processing and storage, and wood processing, where explosive gas environments or environments with explosive or flammable dust exist, it is crucial to ensure the explosion-proof safety of hazardous areas to safeguard the development of our and the national economy.
On-site Explosion-Proof Electrical Equipment Regular Inspection Consultancy Service - Shenzhen ZhongNuo Inspection Technology Co., Ltd.