Gas, Oil, Plumbing, Electrical, Renewable Energy, Solid Fuel. Training and Assessment Centre End Point Assessment Centre
 Gas, Oil, Plumbing, Electrical,Renewable Energy, Solid Fuel.Training and Assessment CentreEnd Point Assessment Centre 

CODNCO1 - Domestic to Commercial Natural Gas Changeover

Assessment Information

This course is designed to test the gas safety competence of an operative intending to extend the domestic natural gas work range to include the commercial natural gas work range.


Course Content

This course criteria comprises of 7 Core Competencies:

  1. Characteristics of Combustion and the use of flue gas analysis equipment
  2. Ventilation
  3. The Operation and Positioning of Emergency Equipment/Appliance Burner
  4. Checking and Setting Commercial Equipment/Appliance Burner Pressures
  5. The Operation and Checking of Commercial Appliances Gas Safety Devices and Controls
  6. Commercial Appliance/Equipment Flueing Requirements
  7. Re-establish Existing Gas Supply and Relight Commercial Appliances

This Changeover assessment must be supported with the relevant appliance gas safety assessments contained in the Commercial suite of assessment i.e. ICPN1, TPCP1A, TPCP1, CORT1, CDGA1, CBHP1 or CIGA1.



Candidates must hold one of these qualifications:

  • CCN1
  • CCCN1
  • You will need to bring with you

  • Candidate name and address
  • Candidate National Insurance number
  • 2 passport sized photographs
  • Copies of relevant qualifications and/or evidence of gas work experience
  • A declaration of the category for the individual making the application
  • First-time applicants will also be required to provide an acceptable  form of photographic identification e.g. a passport or driving licence
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