On April 24, 2022, Certification and Accreditation Administration of China (CNCA) updated the implementation rules for the CCC of explosion proof electric apparatus (CNCA-C23-01:2019 compulsory product certification implementation rules – explosion proof electric apparatus), which adopted eight new national standards of explosion proof electric apparatus (2021 editions) that came into effect on 1 May,
The eight new standards include:
| No. | Standards adopted by the updated implementation rules | Applicable type of explosion proof | |
| Standard for general use | Standards for special use | ||
| 1 | GB/T 3836.1-2021 Explosive atmospheres—Part 1：Equipment—General requirements | GB/T 3836.2-2021 Explosive atmospheres—Part 2：Equipment protection by flameproof enclosures “d” | flameproof enclosures “d” |
| 2 | GB/T 3836.3-2021 Explosive atmospheres—Part 3：Equipment protection by increased safety “e” | increased safety “e” | |
| 3 | GB/T 3836.4-2021 Explosive atmospheres—Part 4：Equipment protection by intrinsic safety “i” | intrinsic safety “i” | |
| 4 | GB/T 3836.5-2021 Explosive atmospheres—Part 5：Equipment protection by pressurized enclosure “p” | pressurized enclosure “p” | |
| 5 | GB/T 3836.6-2017 Explosive atmospheres—Part 6：Equipment protection by liquid immersion “o” | liquid immersion “o” | |
| 6 | GB/T 3836.7-2017 Explosive atmospheres—Part 7: Equipment protection by powder filling “q” | powder filling “q” | |
| 7 | GB/T 3836.8-2021 Explosive atmospheres—Part 8：Equipment protection by type of protection “n” | type of protection “n” | |
| 8 | GB/T 3836.9-2021 Explosive atmospheres—Part 9：Equipment protection by encapsulation “m” | encapsulation “m” | |
| 9 | GB/T 3836.31-2021 Explosive atmospheres—Part 31: Equipment dust ignition protection by enclosure “t” | enclosure “t” | |
These standards are the results of the revision and integration of 12 previous standards on explosion proof electric apparatus, including the GB 12476 serials which were adopted by the previous implementation rules.
The update won’t incur changes in the scope of CCC on explosion proof electric apparatuses. Manufacturers shall follow the new standards listed above when applying CCC certification for their explosion proof electric apparatus products, while those who have went through CCC certification shall apply for to update their certificates according to the implementation scheme published by the certification bodies.
