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Personnel Competence IECEx Personnel Competence Scheme - Unit Ex 001 Assessment

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IECEx Personnel Competence Scheme - Unit Ex 001 Assessment - Apply Basic Principles of Protection in Explosive Atmospheres

Ex001 - Apply Basic Principles of Protection in Explosive Atmospheres

Click here to learn how to submit your application for CSA Group Personnel Certification Programs.

Applicable Industries

End users who are involved or associated with hazardous areas including:

  • Industrial facilities managers
  • R&D engineers
  • Product designers
  • Project/safety engineers
  • Jurisdictional authorities
  • Governmental regulatory staff

Program Highlights

The assessment can be taken at one of CSA Group's many assessment centres worldwide

IECEx Resources


There is no minimum level of technical education applicable for this unit of competence

For More Information or to register:
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When your application is submitted and accepted by CSA Group, you will have 6 months to complete the certification process.

You will be permitted to challenge the written exam up to two additional times if necessary, for a total of three times per application. Additional sitting fees are applicable for second and third exam attempts as necessary.

Fees submitted with your initial application cover the application fee and one examination attempt.

Once you have passed the exam and have earned certification, you will be listed on CSA Group's People Search database of certified personnel.



CSA Group NOW ACCEPTING APPLICATIONS for Ex001 Apply Basic Principles of Protection in Explosive Atmospheres


CSA Group, a global market leader in hazardous location product testing and certification, leverages its strength and expertise by providing training and competence assessments and is one of the few organizations accredited to provide certificates against the IECEx Competence Scheme.

The world’s first international scheme for the certification of personnel associated with equipment, installation and servicing used by “Ex” (Hazloc) industries. The scheme provides companies with independent proof that a person holding an IECEx Certificate of Personnel Competence has the knowledge and skills necessary to implement the international Ex Standards. This can be especially important for contracting staff.

To obtain an IECEx Certificate of Personnel Competence, a candidate prepares an application form and submits it to Sira (CSA Group UK), an approved IECEx Certification Body. An assessment of qualifications and experience will be conducted, followed by a knowledge (theory based) assessment. Candidates who successfully meet the certification criteria will be awarded with an IECEx Certificate of Personnel Competence. Regular re-assessment ensures that the certified person maintains their competence.


TThis Unit of Competence covers the basic principles of protection in explosive atmospheres of plant and machinery and is based on various parts of IEC 60079 suite of standards. There are no minimum level of technical education applicable for this unit of Competence. Compliance in this unit shall be assessed in combination with, or after gaining other competence required by a given industry or enterprise for plant and machinery operation or installations, maintenance or service functions.

Download the Ex001 Application (PDF)

Please email your completed application form to

Note: IECEx exams are administered by IECEx CB Sira Certification (a CSA Group UK). For advanced certification beyond Ex001, please contact Sira (CSA Group UK) at

Minimum Candidate Qualifications

Note: The CoPC is issued to the individual person whether self-employed or an employee and requires the full assessment of the persons capabilities. This shall include an assessment of the persons academic and work history, together with relevant training records including training on Ex competence. When the application is acceptable, the ExCB shall inform the applicant where and when he will be assessed. On successful completion of the assessment the applicant will receive a CoPC. Once gained the competence of the individual shall be subject to surveillance after 18 months and re-assessment after 3 years.

For more information, consult the following operational documents

  • IECEx 05A
  • OD-504
  • Course Type

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