Shenzhen Zhongnuo Testing 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-Proof Safety Inspection Standards for Hazardous Areas
GB15577-2018 Dust Explosion Prevention Safety Code
GB17440-2008 Dust Explosion Prevention Safety Standard for Food Processing Enterprises
GB17918-2009 Dust Explosion Prevention Safety Standard for Bulk Grain Handling Systems at Ports
AQ4229-2013 Dust Explosion Prevention Safety Standard for Grain Vertical Silos
AQ4230-2013 Dust Explosion Prevention Safety Code for Grain Flat Storage Buildings
AQ4232-2013 Dust Explosion Prevention Regulations for Plastic Production Systems
GB18245-2000 Dust Explosion Prevention Safety Standard for Processing Systems
GB19081-2008 Feed Processing System Dust Explosion Prevention and Safety Regulations
GB16543-2008规范 for Dust Explosion Prevention in Coke Blast Furnace Injection Coal Systems
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 Code 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 and Dust Environments

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 Evaluation of Electrical Equipment in Dust Explosive Areas
4. Explosion-proof quality inspection for dangerous explosive areas and explosion-proof safety acceptance inspection.
5. Explosion-proof electrical and non-electrical equipment, as well as explosion-proof engineering consultation/renovation/construction/acceptance.
6.防爆技术咨询 & Services

Regular Inspection Main Contents of Explosion-Proof Electrical Equipment
1. Model Inspection
In strict accordance with relevant laws, the explosion-proof marking of explosion-proof electrical equipment must be standardized, and it can only be implemented after passing the corresponding explosion-proof standard inspection and obtaining a qualification. It is necessary to design the appropriate explosion-proof type, level, and temperature class for electrical equipment based on the specific working environment.
2. Installation Inspection
During electrical equipment installation, even a moment of carelessness can lead to potential losses. For instance, if the ventilation and exhaust system is not properly installed, it may not be sufficiently unobstructed. Additionally, the casings of electrical equipment can pose an explosion risk during electrical operations. Therefore, precision is crucial during installation, and it must be carried out according to relevant standards.
3. Wire Inspection
Electrical equipment is often composed of numerous interconnected wires, which can be particularly complex. If they are not securely connected, or if there are incorrect connections, or if the insulation on the wires peels off, it may lead to short circuits or overloads, resulting in arcs or sparks. Therefore, it is crucial to enhance the inspection of circuit connections, especially the sealed wiring, to ensure they meet the required standards.
4. Grounding Inspection
Electrical equipment generates static electricity during operation. If there's an excessive amount of static, sparks may occur upon discharge. Therefore, it is crucial to implement proper grounding protection 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.

Does explosion-proof electrical equipment require an explosion-proof acceptance after installation?
Many corporate clients are puzzled: Does the installation of electrical equipment with a valid and authentic explosion-proof certification mean it can be used normally?
Is using explosion-proof equipment equivalent to overall explosion-proof?
We understand that every product has its lifecycle, from production, market launch, end-user use, wear and tear, to obsolescence. As special equipment in a specialized industry, the lifecycle of explosion-proof equipment isn't just about the product itself; it also involves factors like installation methods and maintenance procedures. In reality, there are often cases where improper use by the user leads to the failure of explosion-proof electrical equipment, causing explosion accidents. This is a situation that warrants great caution.
Therefore, the installation and acceptance of the newly introduced explosion-proof equipment is particularly necessary and important.
After the explosion-proof equipment is installed, an initial inspection should be conducted by a qualified inspection agency with explosion-proof inspection资质 prior to transferring the project to the user, to ensure the entire project's explosion-proof safety performance. The explosion-proof acceptance standards are based on mandatory standards such as AQ 3009, GB/T3836.15, GB/T3836.16, GB 50257, etc.
After the installation and acceptance of explosion-proof equipment, it's not a one-time solution. To ensure the equipment operates effectively and can be safely used in hazardous areas for a long term, continuous supervision and regular inspections of the in-use explosion-proof equipment are essential.
Continuous supervision should be conducted by the company's staff, with corresponding inspection records kept, and abnormal phenomena handled promptly.
Regular inspections should be entrusted to qualified inspection agencies, with intervals generally not exceeding 3 years. Enterprises should promptly implement explosion-proof rectification measures for items that do not meet inspection requirements and file the third-party qualification agency's Report and rectification status with the安全生产 supervision and management department.
On-site Explosion-proof Electrical Equipment Regular Inspection Consultancy Service - Shenzhen Zhongnuo Inspection Technology Co., Ltd.