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Domestic Gas Safety (CCN1) & Appliances Assessment (Initial)

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  • Description
  • Course Structure
  • Course Content
  • Prerequisite
  • Achievement Upon Completion
  • Description
  • This course is for those candidates whose CCN1 has expired for either more than 12 months or for the first time and have completed the “Fundamental Gas-Domestic Natural Gas Training” under the Managed Learning Program. 

    Please Note: CPA1 is included in CCN1 now.

    Total Course Fee: Price on application

    Package Price includes: Two days Refresher Training and three days assessment for Domestic Core Gas Safety (CCN1) and related appliance only.

    ACS Codes for appliances:

    • CENWAT - Central Heating Boilers and Water Heaters
    • CKR1 - Domestic Cookers
    • HTR1 - Gas Fires & Wall Heaters
    • MET1 – Meters

    For those wishing to work solely on LPG installations we also offer a core LPG Gas Assessment.


  • Course Structure
  • Two Days Refresher Training and Three Days for Initial Assessment on Domestic Core Gas Safety and related appliances.

  • Course Content
  • Topics Covered in this Course:

    • Gas Safety Regulations and other relevant legislation
    • Gas Emergency Actions and Procedures
    • Combustion
    • Gas Pressures and Gas Rates
    • Pipe Work and Fittings, Tightness Testing and Purging,
    • Chimney Systems (Flue Flow Test, Spillage Test etc.)
    • Ventilation
    • Gas Unsafe Situation Procedures
    • Gas Controls
    • Flue Gas Analysis
    • Re-establish existing Gas Supply and Relight Procedures
  • Prerequisite
    • ACS certificate, which was expired for more than 12 months

    OR

    • Fundamental Gas-Domestic Natural Gas Training certificate issued from 01st October 2018 under the Managed Learning Programme
    • For training and experience refer to current Guidance Note 8 (ACS Entry routes and changeover requirements)
  • Achievement Upon Completion

  • Upon successful completion of the assessment, the candidate will receive a Certificate of Competence from AdSkills Certification and will be eligible to register with Gas Safe Register.