Explosion-proof electrical equipment in chemical plants should be regularly inspected in accordance with the execution standards.

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 that fail inspection.
ZhongNuo Inspection offers a range of explosion-proof site safety inspection services:
1. Explosion-proof electrical equipment safety inspection 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 hazardous explosive areas and explosion-proof safety acceptance inspection.
5. Explosion-proof electrical and non-electrical equipment, as well as explosion-proof engineering consulting, renovation, construction, and acceptance.
6. Various explosion-proof technology consulting services.

Required Documents for On-Site Explosion-Proof Inspection Application
1. Area of explosion-proof site
2. Explosion Hazard Area Division Map
3. Names of explosive hazardous substances within the relevant danger zones, along with their Material Safety Data Sheets (MSDS)
4. List of explosion-proof electrical products, including installation areas and tag numbers, etc.
5. Copies of explosion-proof electrical products' explosion-proof certification
6. Instructions Document for Special Usage Conditions of Explosion-Proof Electrical Equipment
7. Descriptive Technical Documentation for Intrinsically Safe Systems
8. Relevant information regarding installation quality

Standards and cycles for regular inspections of explosion-proof electrical equipment
With the increasing popularity of explosion-proof electrical equipment, such equipment is now installed and used in many explosive hazard areas.
Many end-users believe that installing explosion-proof electrical equipment in hazardous explosive areas is all that's needed.
In many cases, so-called explosion-proof electrical appliances do not have a valid explosion-proof certificate, or the certificate has expired or is fraudulent. The label does not match the explosion-proof certificate.
Selection of explosion-proof type not compliant, mixing of gas explosion-proof electrical equipment with dust explosion-proof electrical equipment, improper wiring of explosion-proof electrical equipment installation, ungrounded wiring.
Holes drilled in explosion-proof casings and button installations can cause explosion-proof failure. Long-term exposure to corrosion, high temperatures, and severe vibrations can also affect explosion-proof electrical equipment.
For explosion-proof electrical equipment in use, the AQ 3009-2007 "Electrical Safety and Explosion Protection Standards for Hazardous Areas" stipulates:
Electrical explosion-proof equipment in use should be inspected by a center with explosion-proof expertise at least every 3 years to assess its performance, installation, maintenance, etc.
Immediate corrective actions must be taken for items not meeting inspection standards, and the inspection report and corrective measures must be filed with the Safety Production Supervision and Administration Department.
Conducting explosion-proof site inspections on electrical equipment in use is not only a requirement of the safety production department, but also a manifestation of the company's emphasis on its own life and property safety.

What qualifications are required for regular inspections of explosion-proof electrical equipment?
The regular inspections of explosion-proof electrical equipment, as mentioned in the previous text and conducted according to the AQ 3009-2007 "Electrical Safety and Explosion Proof Standards for Hazardous Areas," must be carried out by a testing center with explosion-proof professional qualifications. This qualification is authorized by the CNAS (China National Accreditation Service for Conformity Assessment) and can be verified on the CNAS website.
On-Site Explosion-Proof Electrical Equipment Regular Inspection Consulting Service - Shenzhen ZhongNuo Testing Technology Co., Ltd.