Reacting Vessel Dust Explosion Proof Certificate Application Guide - Shenzhen Zhongnu Inspection How to Apply

Shenzhen Zhongnuo Testing Technology Co., Ltd. is based in South China and specializes in explosion-proof certification and coal safety certification application consulting services, offering a one-stop explosion-proof technology consulting service.
What test projects are required to apply for an explosion-proof certificate?
Explosive-proof products require passing relevant test requirements of the explosive-proof standards to obtain an explosive-proof certificate.
Different explosion-proof types, catering to equipment used in various explosive environments, require different explosion-proof testing items.
Many customers also want to know what types of tests are required for explosion-proof products? What are the specific requirements for the explosion-proof design of the product?
Below, we'll provide examples of common explosion-proof testing items.
For instance, with intrinsically safe products, typical test items include appearance and structure inspection, spark ignition tests, dielectric strength, battery and battery pack testing, temperature rise tests, transient energy tests, etc.
Main test items for explosion-proof products include heat and cold resistance tests, internal ignition without propagation of explosion, shell pressure resistance, IP testing, temperature rise tests, etc.
Different testing items, catering to various modules or components of the product.
Each test item ensures that the product meets the explosion-proof standards and achieves the required explosion-proof performance.
If a company is designing explosion-proof products and is unaware of the explosion-proof standard requirements,
ZhongNuo Inspection offers guidance services for explosion-proof circuit design and explosion-proof structural design, including explosion-proof standards, design key points, and drawing guidance.
And can also handle explosion-proof testing and certification services.
Need this? Feel free to message us anytime!

What is positive pressure explosion-proof? What technical requirements are there for obtaining a positive pressure explosion-proof certification for a product?
Positive pressure explosion-proof refers to introducing clean air or inert gas into the equipment interior.
Ensure internal equipment pressure exceeds the external explosive environment pressure, isolating explosive mixtures from entering the equipment to achieve explosion-proof performance.
The explosion-proof certification applicable standards are GB/T 3836.1 and GB/T 3836.5.
Primarily, it assesses the equipment's ventilation time, pressure monitoring system, pressure range, blow-off, and alarm functions to meet explosion-proof performance requirements.
Positive pressure type includes three explosion-proof grades: pxb, pyb, and pzc.
Select the appropriate explosion-proof certification level based on product structure and explosion-proof areas.
ZhongNuo Inspection has been involved in the explosion-proof industry for many years, familiar with the requirements of the GB/T 3836 series standards.
We have extensive experience in obtaining certifications for explosion-proof pressure systems.
We offer a one-stop service for explosion-proof technical guidance and consulting, including initial positive pressure explosion-proof design and rectification, drawing evaluation, installation guidance, and certification acquisition.
Our successful cases include positive pressure ultrasonic vibration plates, positive pressure omnidirectional antennas, and positive pressure film thickness gauges.
If you have a need for this, feel free to message us anytime!

The cost of obtaining explosion-proof certification at Shenzhen Zhongnuo Testing Technology Co., Ltd. is related to the following aspects:
1. Should we go for the explosion-proof certificate or the explosion-proof 3C certification? If the 3C certification is chosen, it requires a factory audit, which includes the audit fee, travel expenses for the auditor, and the applying fee and Certificate fee for the 3C certificate.
2. Related to explosion-proof markings. Different explosion-proof markings denote different explosion-proof items, and naturally, the costs vary accordingly.
3. Domestic explosion-proof certification or international explosion-proof certification? The same explosion-proof mark, ATEX/IECEx certification is much more expensive than the domestic explosion-proof certificate, and it also requires a factory audit. North American explosion-proof certification is even more expensive, over $100,000+
4. Do you need to retest? Some customers' products have never been designed for explosion-proof, and they still require整改, which adds to the cost. If the product includes batteries, battery testing is also an additional expense, especially for those that keep failing the tests.
5. Needed or not. Labs are often booked solid, and there's often a waiting list. If needed, there will be a fee involved.

ATEX Certification
ATEX is the European directive for "Equipment and protective systems intended for use in potentially explosive atmospheres," aimed at creating a single market within Europe, eliminating technical barriers to trade, and ensuring the free circulation of equipment intended for use in potentially explosive environments among member states. This directive covers both mining and non-mining equipment (including mechanical and electrical equipment), extends the scope of potentially explosive environments to include airborne dust and flammable gases, vapors, and mists, and stipulates basic health and safety requirements for equipment intended for potentially explosive atmospheres, as well as the conformity assessment procedures that must be adopted before equipment enters the European market. The current directive is 2014/34/EU.
Explosion-proof Certification Application Consultancy - Shenzhen ZhongNuo Inspection Technology Co., Ltd.