What you'll learn?

  • Gas Safety Regulations
  • Emergency Actions
  • Combustion
  • Ventilation
  • Flueing
  • Gas pipework
  • Let-by, strength & tightness testing
  • Re-establishing gas supplies
  • Pressure regulators
  • Gas rates & pressures
  • Gas controls
  • Emergency valves
  • Unsafe situations


CoDNCO1, Changeover core Domestic to core Commercial Gas Safety, covers what you’ll need to know in order to understand the differences between Domestic and Commercial core gas safety, how this impacts upon testing and gas detection; also strength testing and purging the installation. The training also makes reference to the key differences between commercial appliances as opposed to domestic appliances. 

CoDNCO1 training is normally completed within a day, plus additional time to sit the theory & practical assessments. Please note training is mandatory for initial assessments 


  • Changeover Core Domestic to Core Commercial Gas Safety - CoDNCO1