Shenzhen ZhongNuo Inspection & Technology Co., Ltd. offers on-site explosion-proof electrical inspection, explosion-proof project acceptance services, and can provide explosion-proof rectification and construction services for items not meeting inspection standards.
Dust Explosion Hazardous Area Safety Inspection Standards
GB15577-2018 Dust Explosion Prevention Safety Code
GB17440-2008 Grain Processing Plant Dust Explosion Prevention Safety Standard
GB17918-2009 Dust Explosion Prevention Safety Code for Bulk Grain Handling Systems at Ports
AQ4229-2013 Dust Explosion Prevention Safety Standards for Grain Vertical Silos
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 Processed System Dust Explosion Prevention Safety Standard
GB19081-2008 Feed Processing System Dust Explosion Prevention Safety Standard
GB16543-2008 Safety Specification for Dust Explosion Prevention in Blast Furnace Injection Coal System
GB17269-2003 Aluminum Processing System Dust Explosion Prevention Safety Standard
GB/T 16505-1995 Guide for Dust Explosion Relief
GB/T 17919-2009 Guidelines for Explosion-proof Dust Collectors in Hazardous Dust Explosion Areas
General Guidelines for Preventing Static Electricity Accidents - GB12158-2006
AQ3009-2007 Electrical Explosion-Proof Safety Standard for Hazardous Areas
GB 50058-2014 Code for Design of Electrical Installations for Explosive and Fire Hazardous Environments
GB50257-2014 Specification for Electrical Installation Works in Explosive and Flammable Gas Environment Electrical Construction and Acceptance

ZhongNuo Inspection offers 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 Hazards Areas
4. Explosion-proof quality inspection and safety acceptance inspection for hazardous explosive areas.
5. Explosion-proof electrical and non-electrical equipment, as well as explosion-proof engineering consulting, renovation, construction, and acceptance.
6.防爆技术咨询 services.

ZhongNuo 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 hazardous areas with explosive or flammable dust exist. Ensuring the explosion-proof safety of these dangerous explosive areas safeguards the economic development of our country and people.

Shenzhen ZhongNuo Testing Technology Co., Ltd. summarizes the experience from past explosion-proof electrical inspections and compiles the following common non-conformities in 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 surrounding media, leading to rust penetration, structural deterioration, and loss of original strength, rendering the explosion-proof electrical equipment ineffective in preventing explosions.
2. Explosion-proof protective casing subjected to electrochemical corrosion and damage. The metallic casing becomes electrified under conditions such as electrical leakage or potential drift, and when the electrified metal comes into contact with the air medium, it reacts like a battery, causing corrosion of the metallic casing. This leads to the loss of the electrical appliance's explosion-proof capability.
3. Damage from external forces and mechanical impacts. Includes damage to the protective casing caused by collisions with other equipment or mechanical substances on the work site, as well as casing damage due to excessive force during installation.
4. Shell damage due to over-temperature, caused by cold shrinkage and deformation of the protective shell material structure in cold regions due to climate adaptation issues, leading to shell cracking and subsequent damage to the protective shell.
5. Damage caused by unreasonable installation. Damage, loss, and loss of protective functions resulting from the failure to follow installation requirements during the installation of explosion-proof electrical equipment.
6. Inadequate sealing, such as improper handling of sealing materials during installation and maintenance, loose joints of sealing surfaces, damaged sealing components, and unsuitable or missing fasteners for securing the seal, which results in 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 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, including the use of non-intrinsic safety voltage for intrinsic safety electrical equipment and explosion-proof enclosures being used for lighting, heating, and other circuit equipment.
As an end-user of explosion-proof electrical equipment, it is necessary to conduct regular explosion-proof inspections even when explosion-proof electrical equipment is installed and used in explosive hazardous areas. This is not only a requirement of various departments but also a high level of concern for the safety of personnel and property.
On-Site Explosion-Proof Electrical Equipment Regular Inspection Consulting Service - Shenzhen Zhongnuo Testing Technology Co., Ltd.