What a proper CP12 inspection includes
Tightness test at the gas meter to detect leaks in the pipework. Every gas appliance in the property visually inspected and combustion-analysed with a calibrated flue gas analyser. Flues inspected for integrity and correct termination. Ventilation checked against appliance requirements. Safety devices (flame supervision, oxygen depletion sensors, TRVs on cookers) operationally tested. Standing and working pressures recorded. Any 'immediately dangerous' or 'at risk' findings actioned and documented.






