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ATEX Zone 2 Certificates From Some Chinese Labs Are Not Recognized in Europe

Equipment buyers source ATEX-certified equipment from China based on zone classification and certificate documentation. The recognizing body matters as much as the certificate itself.


A petrochemical plant expansion in Rotterdam had specified ATEX-certified electrical equipment for Zone 2 hazardous areas throughout the new process unit. The engineering procurement contractor sourced motors, junction boxes, and local control stations from Chinese manufacturers to hit the project budget. All supplied equipment had ATEX certificates from Chinese certification bodies that are nationally recognized in China under the GB3836 national standard.

The Dutch safety authority Certification Organisation for Hazardous Atmospheres — DEKRA's predecessor body — rejected 34% of the Chinese-sourced equipment during pre-commissioning inspection. The rejection basis was consistent: the certificates were from Chinese notified bodies that are not recognized as competent by the European Notified Bodies for ATEX under the EU ATEX Directive. The certificates were genuine, the testing had been conducted, but the issuing bodies were not on the European Commission's list of notified bodies authorized to issue ATEX certificates valid for placing on the EU market.

The contractor had specified "ATEX certified" in the purchase orders without specifying that the certifying body must be a European Commission-recognized notified body. The Chinese manufacturers had supplied equipment with certification they could accurately describe as ATEX certified in China. The two statements were both true. The equipment was not legal to install in a Dutch petrochemical plant.

The Certificate Is Only as Valid as the Body That Issued It

ATEX certification in Europe is governed by Directive 2014/34/EU, which requires that equipment placed on the EU market be certified by a notified body listed in the NANDO database maintained by the European Commission. There are Chinese testing and certification organizations that conduct ATEX testing to the IEC 60079 series — the same technical standards — and issue certificates that are technically rigorous. Those organizations are not on the EU NANDO list. Their certificates are not valid for EU market placement.

IECEx — the international certification scheme for explosion-protected equipment — is the pathway for Chinese manufacturers to obtain certification recognized internationally. IECEx certificates issued by IECEx-recognized ExCBs are accepted in the EU and in most other jurisdictions. A small number of Chinese certification bodies hold IECEx recognition. The majority do not.

The procurement error in Rotterdam was not a specification error in a technical sense — the equipment met the technical requirements of the ATEX standards. It was a regulatory error: specifying a performance requirement (ATEX compliance) without specifying the regulatory framework (EU Directive 2014/34/EU, notified body certificate) that makes that compliance meaningful in the jurisdiction where the equipment will operate.

The Replacement Cost Was 11% of the Project Equipment Budget

Of the 34% of rejected equipment, approximately 40% could be replaced by sourcing the same or equivalent products from Chinese manufacturers with IECEx-recognized certification — a longer and more expensive supply process, but feasible within an extended project schedule. The remaining 60% required replacement with European-manufactured equipment at substantially higher cost.

The total replacement cost for the rejected equipment was €2.8 million, against an original project equipment budget of €25 million. The project schedule extension to accommodate the replacement procurement added 14 weeks to the commissioning timeline.

The specification that would have prevented this — "ATEX certification by a notified body listed on the European Commission NANDO database, or IECEx certification from an IECEx-recognized ExCB" — is one sentence. It was not in the purchase specification because the procurement engineer assumed that ATEX certification was a universal standard rather than a jurisdictionally-specific regulatory framework.

ATEX certified and ATEX certified for the EU are not the same thing.


Keywords: ATEX certification China equipment Europe | ATEX Zone 2 China procurement, Chinese explosion proof equipment, ATEX IECEx certification China, hazardous area equipment China
Words: 591 | Source: Documented regulatory rejection — petrochemical plant expansion, Rotterdam, 2022. DEKRA/safety authority rejection records, replacement procurement cost and schedule extension documentation. | Created: 2025-01-15T10:40:00Z