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Are the effectiveness of explosion-proof certificates issued by different explosion-proof certification agencies the same?

Zhongnuo Testing has been engaged in explosion-proof certification agency services for many years and has encountered various clients. Some clients come to inquire and specify that we need a certificate issued by Nanyang, which has higher authority; Alternatively, our product is a flow meter and requires a certificate ……

What are the official institutions that provide explosion-proof certification?

In China, when it comes to explosion-proof certification, people always think of companies such as Nanyang Explosion proof Institute and Shanghai Instrument Institute, because they are among the earliest enterprises engaged in the explosion-proof industry in China and have participated in the drafting and writing of ex……

Can NEPSI certification be converted to IECEx certification?

Those engaged in the explosion-proof industry know that NEPSI certification refers to the explosion-proof certification applied for and processed at NEPSI (National Instrumentation Explosion Safety Supervision and Inspection Station, abbreviated as Shanghai Explosion proof Institute), which is one of the more authorita……

Do I need to apply for both the explosion-proof certificate and the explosion-proof CCC certificate at the same time?

Many corporate clients ask about the issue of explosion-proof CCC certification when consulting for the application of explosion-proof qualification certificates. This indicates that the transition period for explosion-proof CCC certification is one year, and the mandatory implementation period is one year. The two-yea……

Which level is higher for Ga and Gb in explosion-proof certification?

Ga, Gb, Gc are protection levels for equipment used in explosive gas environments and are essential components of explosion-proof equipment labeling Ga explosive gas environment equipment has a "very high" protection level. In normal operation, expected or rare faults that occur are not ignition sources. Ga p……

What is an explosion-proof certificate? Where can I handle it?

With the increasing emphasis on safety production by the country, electrical equipment used in various chemical plants, oil stations, oil depots, grain and oil factories, coal mines, and other places must pass the inspection and testing requirements of national explosion-proof standards such as GB3836, and obtain corre……

Technical requirements for using cables in explosion-proof construction sites

1. Electrical circuits should be laid in areas with low explosion hazards or at a distance from the release source, avoiding places that are susceptible to mech……

How to divide the dust explosion prevention area into 20 zones, 21 zones, and 22 zones?

According to the frequency and duration of explosive dust environments, the places classified as explosive dust environments are divided into three zones. The dust layer, precipitation, and accumulation of combustible dust should be considered as "any other release source" that may form an explosive environme……

Is explosion-proof certification equivalent to intrinsic safety certification? What's the difference between them?

Sometimes customers come to inquire about Zhongnuo Testing, and they have products that require intrinsic safety certification. What is the difference between this and explosion-proof certification? This involves the issue of various types of explosion-proof certification. Actually, intrinsic safety is just one type of……

Does the whole machine still need to undergo explosion-proof certification, even though the components have explosion-proof certification?

When many clients consult, I purchase components and equipment with explosion-proof certificates. Does the overall equipment assembled together still need explosion-proof certification? What are the requirements for explosion-proof certification of the whole machine? As a professional explosion-proof certification agen……