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.
Regular Inspection Key Points for Explosion-Proof Electrical Equipment
1. Model Inspection
In accordance with the strict stipulations of relevant laws, explosion-proof electrical equipment must have standardized explosion-proof markings, and only after passing the relevant explosion-proof standard checks can they be implemented. The explosion-proof type, grade, and temperature group information for the electrical equipment must be appropriately designed based on the specific working environment.
2. Installation Inspection
During electrical equipment installation, any oversight can lead to potential losses. For instance, if the ventilation and exhaust system is not properly installed and not fully functional, and the electrical equipment's casing has the possibility of exploding during electrical operations. Therefore, meticulousness is crucial during installation, and it must be carried out according to relevant standards.
3. Line Check
Electrical equipment is often composed of a vast array of interconnected wires, which can be particularly complex. Poor connections, incorrect wiring, or even insulation failure can lead to short circuits or overloads, potentially causing arcs or sparks. Therefore, it is crucial to reinforce inspections of the circuit, especially the密封 of the wires, to ensure that the connections 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, hence it's crucial to ensure proper grounding protection. This allows for the timely discharge of static electricity, thereby preventing 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, ensuring that the grounding is both safe and secure.

The standard referenced in the "Electrical Explosion Proof Inspection Report" issued from regular inspections of explosion-proof electrical equipment includes but is not limited to:
GB 50058-2014 Code for Design of Electrical Installations in Explosive Hazardous Environments
GB50257-2014 "Code for Construction and Acceptance of Electrical Installations in Explosive and Flammable Gas Environment"
GB/T 3836.15-2017 "Electrical Equipment for Explosive Gas Atmospheres — Part 15: Electrical Installations in Hazardous Areas (Excluding Mines)"
AQ3009-2007 "Electrical Explosion Protection Safety Regulations for Hazardous Areas"

Regulatory requirements for periodic inspections of explosion-proof electrical equipment:
Explosion-proof equipment used in hazardous explosive areas throughout its entire lifecycle, including production, installation, use, inspection, maintenance, and withdrawal from the market.
Regular inspections provide a strong guarantee for their usage condition and explosion-proof safety performance. Relevant laws and regulations in our country also have corresponding provisions.
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 a safety production inspection agency with explosion-proof qualification, with the interval generally not exceeding 3 years.
The company should take corrective actions promptly based on the inspection results, and file the inspection report and the rectification status with the安全生产监督管理 department.
The preface of AQ3009-2007 "Electrical Safety and Explosion-Proof Rules 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!

Does explosion-proof electrical equipment require an explosion-proof acceptance test 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 the use of explosion-proof equipment equivalent to the entire system being 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 is not just about the product itself, but also its installation methods, maintenance, and care. In reality, explosions often occur due to improper use by the users, leading to the failure of explosion-proof electrical equipment and causing accidents. This is a situation that deserves our vigilance.
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 explosion-proof equipment installation and acceptance, it is not a one-time solution. To ensure that the explosion-proof equipment remains in good working condition and can be used safely in hazardous areas for a long time, continuous supervision and regular inspections of the equipment in use are necessary.
Continuous supervision should be carried out by the company's staff, with corresponding inspection records kept, and any abnormal phenomena should be addressed 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 any non-compliant items identified during inspections and file the third-party qualification agency's Report and rectification status with the department of安全生产 supervision and management.
On-Site Explosion-Proof Electrical Equipment Regular Inspection Consultancy Service - Shenzhen ZhongNuo Inspection Technology Co., Ltd.