IE F-Gas Category III study guide
IE F-Gas Category III · Work through your exam, one topic at a time.
The F-Gas Category III credential sits within the family of F-Gas and ODS Regulations qualifications offered by awarding bodies such as City & Guilds. Category III is generally associated with lower-volume refrigerant handling work rather than the full installation and servicing scope covered at higher categories, though candidates should confirm the precise scope of their chosen qualification with the delivering centre before enrolling. The IE F-Gas Category III study guide has 4 sections and about 1,624 words.
01F-Gas and ODS Regulations: Scope, Duties and Thresholds
Fluorinated greenhouse gases (HFCs, PFCs, SF6 and, historically, HFC blends) are controlled under the EU F-Gas Regulation as retained in UK law. Ozone-depleting substances - CFCs, HCFCs, halons, methyl bromide - sit under a separate ODS regime that is essentially prohibitive: virgin HCFC is banned, and reclaimed HCFC may only be used for maintaining existing equipment until the final cut-off date.
316 words, about 2 min02Environmental Impact: GWP, ODP and Why Charge Size Matters
Every refrigerant has two headline numbers. ODP (ozone depletion potential) is referenced to CFC-11 = 1.0 and measures chlorine/bromine-driven stratospheric ozone destruction.
317 words, about 2 min03Containment, Recovery and Handling Practice
Good practice is a hierarchy: prevent the leak, detect it early, repair it promptly, and only then recover. Common leak points are joints, flare connections, valve stems, Schrader ports, sight glasses and vibration-prone pipework.
338 words, about 2 min04Safety: Pressure, Asphyxiation, Frostbite and Flammables
Refrigerant work exposes you to four recurring risks: pressure (sudden release, liquid slugging, bursting components), asphyxiation (heavier-than-air vapour displacing oxygen in pits, basements and plant rooms), cold burns (liquid refrigerant at well below −20 °C contacting skin or eyes), and toxicity or flammability depending on the fluid. A2L refrigerants are mildly flammable; A3 are highly flammable; both demand no ignition sources, appropriate ventilation and leak detection in occupied or confined spaces.
653 words, about 3 min