Shenzhen Zhongnuo Testing Technology Co., Ltd. is based in South China, offering on-site explosion-proof construction, safety inspections, renovations, project acceptance, and explosion-proof installation consulting services. We are well-versed in explosion-proof construction standards, boasting experienced construction teams and extensive practical experience. We have served major corporations such as PetroChina, LG, Hanlan Environment, BOE Technology Group, and Sinovac Biotech, receiving consistent praise and trust from our clients!
Shenzhen Zhongnuo Testing Technology Co., Ltd. offers a range of explosion-proof construction services for hazardous explosive areas.
1. Explosion-proof site inspection and consultation
2. Explosion-proof engineering construction and renovation on-site
3. Explosion-proof Construction Acceptance
4. Explosion-proof electrical installation, maintenance, and renovation
5. Explosion relief walls, doors, and windows installation
6. Dust Removal Equipment Installation and Retrofit Construction

Basic Standards for Explosion-Proof Electrical Construction (shared by Shenzhen Zhongnuo Inspection Technology Co., Ltd.)
Explosion-proof electrical installation differs from standard electrical installation due to the increased explosion-proof requirements of its environment. In accordance with industry standards, an environment where air mixed with gases, vapors, mist, or dust can form a mixture that, upon ignition, will propagate the flame to the entire unburned mixture is termed an explosive environment. An area where explosive gas environments or combustible dust environments are present in large quantities or are expected to occur, necessitating special preventive measures for the structure, installation, and use of electrical equipment, is called a hazardous area. Explosion-proof electrical installation refers to the work of conducting operations in explosive environments or hazardous areas, meeting the requirements for explosion-proof electrical equipment, conditions, and personnel, and is highly critical.

Protection of explosive loop circuits should comply with the following regulations (shared by Shenzhen ZhongNuo Testing Technology Co., Ltd.)
In the 1st zone, both phase lines and neutral lines in the single-phase network should be equipped with short-circuit protection, and appropriate switches should be used to simultaneously disconnect both the phase lines and neutral lines.
(2) For 3kV-10kV cable lines, it is advisable to install a zero-sequence current protection, and the protective devices in Zones 1 and 21 should be set to trip.

Basic Specifications for Explosion-Proof Design in Hazardous Areas (Shared by Shenzhen Zhongnuo Testing Technology Co., Ltd.)
1. First, conduct an overall explosion protection design
2. Directed release of explosive energy. Around the explosion source, comprehensively utilize anti-explosion and venting technologies. Set anti-explosion walls and windows in the direction of high population density, office areas, and critical equipment. In areas with minimal human access and without critical equipment, install venting walls and windows.
3. Determine the safe distance. Minimize the setup of office areas, residential zones, and critical equipment areas within the range less than the safe distance unless necessary; if set up, implement necessary explosion-proof measures.
4. Conversion of non-blast-resistant buildings to blast-resistant structures. Within the range of less than the safe distance, conduct blast resistance assessment of the buildings and reinforce those that do not meet the blast resistance requirements: prevent building collapse; prevent the cracking and shattering of brittle materials such as bricks, concrete, glass, etc., to avoid debris.
5. Place explosion-proof shelters in hazardous blast areas.
Explosion-proof electrical改造 for hazardous areas and on-site explosion-proof construction consulting services - Shenzhen ZhongNuo Testing Technology Co., Ltd.