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  • Overview

    Dates are available upon request, please contact 01254 292451 or email for further information.

    This assessment will enable gas engineers who hold (COCN1) Core Commercial Gas or (CODNC01) Change over Domestic Core to Commercial Core to expand their scope of work to include testing and purging pipework (TPCP1) >1m3 and (TPCP1A).

  • What will I study?

    Training is available prior to carrying out the assessment if required.

  • Entry requirements

    Must already be accredited with (COCN1) Core Commercial Gas or (CODNCO1) Change over Domestic to Commercial Core.

  • How will I be assessed?

    Candidates will complete a series of written and practical assessments.

  • What can I do next?

    We offer a wide range of Gas courses. Contact the Gas team on 01254 292451/01254 292500 or email

Imran Ajaaib Medium

I found my time in Blackburn College life changing

Imran Ajaaib