F-Gas and ODS Regulations: Legal Duties and Environmental Obligations
The regulatory framework
Candidates must know that fluorinated greenhouse gases (F-gases) and ozone-depleting substances (ODS) are controlled by separate but overlapping regimes. F-gases - HFCs and, where still relevant, HFC blends - are managed under the F-Gas Regulation, which sets containment, leak-checking, record-keeping, recovery and training/certification duties. ODS, principally HCFCs such as R-22 and CFCs such as R-12, are controlled under the ODS Regulation, which bans their use for servicing in most applications and restricts their placement on the market.
The core legal duties you must be able to state: only certified personnel may handle controlled refrigerants; operators must prevent leaks, repair them within prescribed timescales, and keep records; equipment above certain charge thresholds must be leak-checked at defined frequencies; and refrigerant must be recovered, never vented. Placing virgin HFC on the market is constrained by the phase-down quota, which is why reclaimed refrigerant has become commercially important.
Traps in questions
- Charge thresholds are in tonnes of CO2 equivalent, not kilograms. A question may quote a weight and expect you to convert using the refrigerant's GWP.
- Leak-check frequency scales with charge. Know the tiered intervals and that a detected leak must be repaired and then verified by a follow-up check.
- ODS and F-gas duties are not identical. Do not apply an F-gas rule to an HCFC system; R-22 servicing is largely prohibited.
- Record retention periods are a classic distractor.
Worked example
A system holds 8 kg of an HFC with GWP 2088. CO2e = 8 × 2088 = 16,704 kg = 16.7 t CO2e. That exceeds a 5 t but is below a 50 t threshold, so the applicable leak-check frequency is the lower tier - not the most onerous one. Always convert before selecting a frequency.