C&G 2079-11 F-Gas Category I study plan

List the core legal duties of a certified F-gas operative and state which activities are restricted to certified personnel and certified companies

Explain global warming potential and ozone depletion potential, then rank the main refrigerant families (HFCs, HFOs, CO2, ammonia, hydrocarbons, CFCs/HCFCs) by environmental impact

Convert refrigerant charge weights into CO2-equivalent tonnes using GWP values and apply the resulting thresholds to real system examples

Identify the environmental consequences of refrigerant venting and the correct legal route for disposing of recovered ODS and F-gas

Summarise the penalties, enforcement routes and record-retention periods that apply to non-compliance

Build a leak-check frequency matrix from CO2e band, system type and whether a leak detection system is fitted

State the statutory intervals for re-checking after a leak is repaired and for verifying that a repaired leak is sealed

Complete a compliant F-gas equipment record for a fictitious system, including charge history, leak checks and repairs

Describe who must be notified, in what form and within what timeframe when a reportable leak occurs

Explain the labelling, containment and record-transfer duties that apply when a system changes hands

Plan the installation sequence for a split and a small packaged system, listing the isolation, brazing, pipework and electrical checks required at each stage

Calculate strength-test and tightness-test pressures for R410A, R32 and R134a systems and distinguish when each test is mandatory

Specify the correct test gas, regulator, gauge class and test duration, and state why oxygen and air must never be used

Write an evacuation and dehydration procedure including triple evacuation, vacuum hold test and micron-level acceptance criteria

Draft a commissioning checklist covering charge verification, superheat/subcool, safety controls and handover documentation

Explain why pipework is nitrogen-purged during brazing and describe the checks that detect a poor purge

Select and justify test instruments, stating the accuracy, calibration and range requirements for pressure and vacuum measurement

Compare vapour, liquid and push-pull recovery methods and select the right one for a given system and refrigerant state

Calculate the maximum fill weight for a recovery cylinder from its water capacity and the refrigerant density, applying the 80% fill limit

Identify the hazards and controls for recovering a flammable refrigerant from a system containing residual charge

Distinguish recovery, recycling, reclaiming and destruction, and state which processes a Cat I operative may carry out on site

Write a decommissioning procedure for a system containing ODS, including pump-down, isolation, oil handling and cylinder labelling

Describe how recovered refrigerant is documented, stored, transported and consigned for destruction or reclaim

Explain the risks of mixing refrigerant types and the checks that prevent cross-contamination of recovery cylinders

Outline the correct handling and disposal routes for contaminated oil, filter driers and contaminated components

Classify the main refrigerants by ASHRAE safety group and state the practical consequence of each class for working methods

Select appropriate PPE for a given task and explain the limitations of each item, including glove type and eye protection during liquid contact

Complete a five-step risk assessment and a dynamic on-site assessment for a live plant room job

Describe safe cylinder handling, storage, inspection and transport requirements, including valve protection and temperature limits

Identify asphyxiation, flammability, pressure-release, freeze-burn and electrical hazards and specify a control for each

Work through scenario questions that combine safety decisions with leak-checking and record-keeping duties

Re-test every goal from weeks 1 to 6 and rank the weakest six by mock-question error rate

Practise explaining legal and technical points aloud in the concise style required by written exam answers

Review the error log and rewrite every missed question with the correct reasoning

Sit two full-length timed mock papers under exam conditions and record the score for each domain

Revisit the three lowest-scoring domain areas and close each gap with targeted revision

Memorise the key numbers - leak-check intervals, CO2e thresholds, test pressures, vacuum limits, cylinder fill limits - and self-test them from memory

Confirm the practical tasks and documentation you can perform confidently, and list anything still needing supervised practice