CCN1 re-assessment is required for any operative who has held a CCN1and requires re-assessment to continue working on domestic gas installations and appliances.

Re-Assessment Core Domestic Gas Safety (CCN1) training and assessment covers:

• Gas safety regulations and other relevant legislation
  
• Combustion, relevant pressures and gas rates
  
• Gas pipe work
  
• Tightness testing and purging, including low and medium pressure
  
• Chimney systems recognition and testing
  
• Ventilation
  
• Gas controls
  
  Assessment is carried out using a variety of assessment methods including multiple choice, short written response and scenario questions and observed practical assessment.
  
  The appliance assessments the college can provide are;
  
• CENWAT ~ Central heating boilers/hot water heaters
  
• CKR1 ~ Cookers
  
• HTR1 ~ Space heaters (including gas fires and wall heaters)
  
• MET1 ~ Meters
  
• CPA1 ~ Combustion Analysis