In order to facilitate the application of IECEx certification certificates for explosion-proof electrical product manufacturers, the basic knowledge of IECEx international certification and the specific methods for applying for IECEx certification certificates are now introduced as follows:

1. Introduction to the International Electrotechnical Commission certification system for explosion-proof electrical products

1.1 What is the IECEx system?

The full name of the IECEx organization is the International Electrotechnical Commission ’s organization system for standard certification of electrical equipment used in explosive environments. The full English name is IEC Scheme for Certification to Standards for Electrical Equipment for Explosive Atmospheres, the English abbreviation IECEx SCHEME, or IECEx system for short.

The IECEx system is an international organization under the International Electrotechnical Commission that specializes in the safety certification of explosion-proof electrical products (referred to as Ex products-the same below).

1.2 The purpose of the IECEx system?

The international certification of Ex products in accordance with international standards aims to eliminate unnecessary repetitive certifications and inspections between the world and promote international trade while ensuring an appropriate level of safety for explosion-proof electrical products.

1.3 What is the goal of the IECEx system?

The ultimate goal of the IECEx system is to accept worldwide:

A standard-the relevant standard formulated by the IEC TC31 technical committee;

One certificate ---- IECEx Certification of Conformity;

A mark-IECEx Mark of Conformity (IECEx Mark of Conformity) (under development).

1.4 How to achieve the goal of "Three Ones"?

To achieve the final goal, the IECEx system is divided into two steps:

Step 1: Provide a "fast way" for national Ex certification within the framework of IECEx.

Since the national standards of most member countries are different from the corresponding IEC standards, they cannot directly accept the IECEx certification. In order to promote the development of IECEx international certification, the IECEx system stipulates that at this stage, each member country must accept (recognize) the Ex test reports (IECEx Test Reports referred to as ExTRs) and factory quality system issued by ExCB of other member countries when conducting national Ex certification Inspection report (IECEx Quality Assessment Reports referred to as QAR).

Step 2: All participating nations realize the unified standard (IEC standard), unified certificate (IECEx certificate of conformity) and unified mark (IECEx mark).

1.5 How to provide a quick way for National Ex certification?

1. Each member country must publish its national standard differences;

2. ExCB of member countries with different standards shall recognize and accept ExTR and QAR issued by ExCB of other member countries during the national certification of Ex products in order to issue national certification certificates;

3. For the difference part of the national standard, ExCB accepting ExTR can test the difference part and / or supplement the factory inspection;

4. If the ExCB that accepts ExTR has doubts about the contents of the report, it should first communicate with the ExCB that originally issued the ExTR.

Through the "fast way", manufacturers who have obtained IECEx certification can easily apply for the national Ex certification of other member countries, saving time and costs.

1.6 How many member countries does the IECEx system currently have

According to the IECEx 01 document-basic rules, all IEC members are eligible to apply to participate in the IECEx system.

So far, there are 24 official member countries, which are Australia, Canada, China, Denmark, Finland, France, Germany, Hungary, Italy, Japan, South Korea, Netherlands, Norway, New Zealand, Singapore, Romania, Serbia and Montenegro (formerly Yugoslavia), Russia, Slovenia, South Africa, Sweden, Switzerland, the United Kingdom and the United States.

The organization representing China in the international organization is the National Certification and Accreditation Administration (CNCA).

1.7 What is the organization of the IECEx system?

The IECEx certification organization system is one of the three product quality certification organizations established by the International Electrotechnical Commission Conformity Assessment Bureau, alongside with which are electrical safety certification (IECEE) and product conformity assessment (IECQ).

The organizations of the IECEx system are:

---- IECEx Management Committee (Ex Management Committee, abbreviated as ExMC), which is composed of representatives of each member country, IECEx organization chairman, deputy chairman, treasurer, secretary, ExTAG chairman, IEC TC31 chairman and IEC general secretary. It is IEC ’s A committee authorized by the IEC Conformity Assessment Agency to be responsible for the overall work of the IECEx system.

---- Ex Testing and Assessment Group (ExTAG and Abbreviation ExTAG), responsible for technical coordination in IECEx certification activities;

---- Appeal Board (Board of Appeal), is responsible for accepting and handling all kinds of appeals of the IECEx system, including appeals from certified manufacturers.

---- Secretariat, responsible for the daily affairs of the IECEx system.

Visit the IECEx wang site to get free information about the IECEx system, such as the member countries, the list and communication address of the IECEx certification body, the public documents of the IECEx organization, and the product list, enterprise directory, certification certificate and basic information of the IECEx certification certificate Wait, welcome to inquire.

1.9 Main officials of the IECEx system:

Chairman of IECEx: Dr. Uwe Klausmeyer (Germany)

Vice Chairman of IECEx: Mr. Liu Weijun (Chief Engineer of China Certification and Accreditation Administration)

Secretary of IECEx: Mr. Chris Agius (Australia)

Treasurer of IECEx: Mr. Heinz Berger (Switzerland)

IEC TC31 Chairman: Mr. Jim Munro (Australia)

ExTAG Chairman: Mr. Kerry Mc Manma (USA)

ExTAG Secretary: Mr. Michel Brenon (France)

1.10 What are the main working documents of the IECEx system?

The main documents on which the IECEx system operates are divided into 4 categories:

Category 1-basic documents, including

(1) IEC regulations;

(2) IEC procedures and regulations, ISO / IEC guidelines;

(3) IECEx No. 01 document-basic rules;

(4) IECEx No. 02 Document-Rules of Procedure;

Category 2-Operational Document

Operation documents are the specific regulations of the IECEx organization. At present, there are 12 such documents. Among them, the following documents are related to product certification:

Ex / OD003 / V1: IECEx accepts the candidate accreditation bodies and inspection laboratory evaluation procedures

Ex / OD005 / V2: IECEx requirements for manufacturers' quality system

Ex / OD009 / V1:? IECEx working documents-procedures for issuing IECEx certificate of conformity, IECEx inspection report and IECEx quality inspection report

Ex / OD017 / V2: Guide to drawings and documents regarding IECEx certification

Category 3-Technical Guide Document

This type of document introduces the technical points of each explosion-proof type for reference by certification personnel, inspectors, and designers.

Category 4-Explosion-proof test and evaluation team's decision (Ex TAG)

This type of document is a technical decision made by the IECEx system testing and review team related to explosion-proof testing and review, such as label requirements and printed circuit board requirements.

Category 5-Record format file

This type of document specifies the record format of the IECEx system in certification activities.

1.11 What standards does the IECEx system use for international certification of explosion-proof electrical products?

The standards developed by IEC / TC 31 and its sub-committees are approved by ExMC and approved by CAB. They can be used as standards for IECEx organizations to carry out international certification of explosion-proof electrical products. These standards are published in the IECEx bulletin. There are currently the following standards:

Electrical equipment for explosive gas atmospheres:

IEC 60079-0: General requirements

IEC 60079-1: Construction and verification test of flameproof enclosures of electrical apparatus

IEC 60079-2: Electrical apparatus, type of protection 'p' (Pressurization)

IEC 60079-5: Powder filling 'q'

IEC 60079-6: Oil-immersion 'o'

IEC 60079-7: Increased safety 'e'

IEC 60079-11: Intrinsic safety 'i'

IEC 60079-15: Electrical apparatus with type of protection 'n' (Non-Sparking)

IEC 60079-18: Encapsulation 'm'

IEC 60079-25: Intrinsically safe systems

IEC 60079-26: Construction, test and marking of Group II Zone 0 electrical apparatus

IEC 60079-27: Fieldbus intrinsically safe concept (FISCO)

Electrical equipment for flammable dust environment

IEC 61241-0: General requirements

IEC 61241-1: Electrical apparatus protected by enclosures

IEC 61241-1-1: Electrical apparatus protected by enclosures--Section 1: Specification for apparatus

IEC 61241-4: Type of protection 'pD'

IEC 61241-18: Protection by encapsulation 'mD'

Flammable gas detector

IEC 61779-1: General requirements and test methods

IEC 61779-2: Performance requirements for group â…  apparatus indicating a volume fraction up to 5% methane in air

IEC 61779-3: Performance requirements for group â…  apparatus indicating a volume fraction up to 100% methane in air

IEC 61779-4: Performance requirements for group â…¡ apparatus indicating up to 100% lower explosive limit

IEC 61779-5: Performance requirements for group â…¡ apparatus indicating a volume fraction up to 100% gas

Mining cap lights

IEC 62013-1 Caplights for use in mines susceptible to firedamp

Part 1: General requirements-Construction and testing in relation to the risk of explosion

Electric heat tracing in explosive gas environment

IEC 62086-1 Electrical apparatus for explosive gas atmospheres-Electrical resistance trace heating-Part 1: General and testing requirements

1.12 What is the IECEx system certification mode?

The IECEx system certification adopts the fifth international common certification model ---- type inspection + factory quality system inspection + post-certification supervision.

1.13 What are the requirements of the company's quality system for the IECEx system Ex product certification?

IECEx / OD005 / V2: "IECEx Requirements for Manufacturers' Quality System"

The document sets out specific requirements for the quality system of manufacturers applying for IECEx international certification. Its content is based on ISO 9001-2000, and provides some supplementary provisions for manufacturers in the design, manufacture, and inspection of explosion-proof electrical products.

1.14 Which certificates (certification documents) are issued by the IECEx system?

Three types of certificates are issued by the IECEx system:

1) Explosion-proof type inspection report (ExTR)

2) Factory quality inspection report (QAR)

3) Certification (IECEx Certification of Conformity, abbreviated CoC)

1.15 What is the purpose of IECEx international certification?

1) The company's products have obtained the IECEx international certification certificate, proving that the company's certified products meet the requirements of the relevant IEC standards, and the manufacturer's quality plan meets the requirements of the international explosion-proof certification organization, and the products are produced under the supervision of ExCB.

2) For products that have obtained the IECEx international certification, companies can post information or copies of the IECEx international certification on advertisements, promotional materials, and product samples, and can mark the certificate number on the product. If the IECEx certification mark is issued, You can also mark the IECEx certification mark on certified products. Improve the credibility and popularity of enterprises and products, and increase market competitiveness.

3) If a product that has obtained the IECEx international certification certificate is exported, for countries that have received the IECEx international certification certificate, such as Australia and New Zealand, there is no need to apply for the explosion-proof certification of that country. For member countries that still have differences in standard countries, they can apply for the national explosion-proof certification of the product to the certification body (ExCB) of the country based on the obtained IECEx international certification certificate, inspection report (ExTR) and factory quality system inspection report (QAR). "Quick way" to obtain certification, saving time and costs. If you export to a non-IECEx member country, you may also receive preferential treatment for recognition of certificates or simplified certification procedures.

1.16 How long is the validity of the IECEx international certification certificate?

The IECEx certification certificate does not specify the validity period, and the validity of the certificate depends on the regular supervision of the certification center to maintain it.

1.17 Which certification bodies can engage in the certification of IECEx explosion-proof products?

Only the certification bodies (ExCB) recognized and authorized by the IECEx system in member countries of the IECEx system can engage in the certification of the explosion-proof products of the IECEx system.

The certification body must be recommended by the national member agency of the host country, and the certification body should formally apply to the IECEx system. The IECEx system appoints experts to conduct on-site assessment and pass. Then, after the member countries vote and agree, the IECEx secretariat issues the acceptance certificate of the IECEx certification body Qualified for ExCB. The list and communication address of ExCB accepted and authorized by IECEx organizations in various member states and the scope of authorized certification standards can be found on the wang station of the IECEx system.

1.18 What certification work is undertaken by ExCB?

The certification work undertaken by ExCB mainly includes:

---- Accept IECEx certification application;

---- Organize the Explosion-proof Inspection Laboratory (ExTL) to carry out explosion-proof type inspection of the products applying for certification (including explosion-proof examination of drawings and documents and prototype testing);

---- Review the Ex Protection Report (ExTR);

---- Perform factory quality condition inspection on the manufacturer applying for certification, prepare and review the factory quality condition inspection report (QAR);

---- Make a decision on whether to certify;

---- Contact with the IECEx system secretariat to issue IECEx certification;

---- Carry out annual supervision on manufacturers that already hold IECEx certification.

19 Which inspection laboratories can be engaged in the inspection work of certification of explosion-proof products organized by IECEx?

Only the explosion-proof inspection laboratories (ExTL) recognized and authorized by the IECEx system in the member countries of the IECEx system are allowed to engage in the inspection work of the certification of the explosion-proof products of the IECEx system.

The inspection laboratory must be recommended by the national member institution of the host country, and the inspection laboratory should formally apply to the IECEx system. The IECEx organization appoints experts to conduct on-site evaluation and then, after voting by the member states, the IECEx Secretariat issues the acceptance Certificate, the party has the qualification of ExTL.

ExCB and ExTL can be the same unit or different units. If ExTL and ExCB are not the same unit, ExTL needs to sign an agreement with ExCB to undertake the inspection work entrusted by ExCB (if they are located in the same organization, there is no need to sign an agreement).

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