Shenzhen Zhongnuo Testing Technology Co., Ltd. specializes in consulting services for explosion-proof certification and coal safety certification.
What documents are required to apply for the Coal Safety/Mine Safety certification?
(1) Corporate Standards
(2) Product Manual
(3) Product Drawings (circuit diagrams, PCB layouts, schematics, assembly diagrams, hydraulic diagrams, location maps, etc.)
(4) Bill of Materials (BOM)
(5) Labels, factory certificates of conformity, etc.
Sample

The domestic coal safety certification system is still quite strict. It combines type testing with factory production system review.
To ensure the applicant company is capable of ensuring product production and capacity. Even after obtaining the Coal Safety Certification,
The company must also undergo annual supervision and evaluation by the Safety Standard Center.

Do we still need a Coal Mine Safety Certificate if we already have a防爆 certificate for the product?
The explosion-proof certificate and coal safety certificate are applicable to different locations.
explosion-proof certificate generally refers to places used for various explosive gases and dusts, excluding coal mine shafts
Coal Safety Certificate refers to the safety certification mark for equipment and products used underground in coal mines.
So, whether to apply for an explosion-proof certificate or a coal safety certificate depends on where the product is used.
If used only in non-coal mines with explosive gases or dust, a explosion-proof certificate is sufficient.
If coal mine operations are involved, a coal safety certificate is mandatory; the two certificates are mutually incompatible.
Learn more details by sending a direct message to Shenzhen Zhongnuo Testing Technology Co., Ltd.!

What test items 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 clients also want to know what testing items are required for explosion-proof products? What are the specific requirements for the explosion-proof design of the products?
Below, we'll provide examples of common explosion-proof testing items.
For instance, with intrinsic safety products, typical test items include appearance and structure inspection, spark ignition test, dielectric strength, battery and battery pack testing, temperature rise test, transient energy test, and more.
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, tailored to various modules or components of the product, each test 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 not familiar with the explosion-proof standards requirements,
ZhongNuo Inspection can provide guidance services for explosion-proof circuit design and explosion-proof structural design, including explosion-proof standards, design key points, drawing guidance, and can also act as an agent for explosion-proof testing and certification services.
Need this service? Feel free to PM Shenzhen ZhongNuo Testing Technology Co., Ltd. anytime!
Coal Safety Certification and Mine Safety Certification Consultancy Services - Shenzhen Zhongnuo Inspection Technology Co., Ltd.