C&G 2079-11 F-Gas Category I study guide
C&G 2079-11 F-Gas Category I · Work through your exam, one topic at a time.
City & Guilds 2079-11 (F-Gas and ODS Regulations, Category I) is a UK vocational qualification for technicians who handle fluorinated greenhouse gases and ozone-depleting substances in refrigeration, air conditioning and heat pump work. Category I is the widest category, aimed at engineers who carry out the full range of activities - installation, commissioning, servicing, leak checking, recovery and decommissioning - rather than the narrower task sets covered by the lower categories. The C&G 2079-11 F-Gas Category I study guide has 5 sections and about 2,699 words.
01F-Gas and ODS Regulations: Scope, Numbers and Thresholds
Two legal regimes overlap on a refrigeration job. The F-gas Regulation (retained Regulation (EU) 517/2014 and its amendments) controls fluorinated greenhouse gases - HFCs, PFCs and SF6 - through a CO2-equivalent phase-down, placing-on-market bans, leak control, certification and labelling.
322 words, about 2 min02Legal Duties, Operator Responsibility and Environmental Impact
The "operator" is the person or organisation with operational control of the equipment - in practice the end user, not the contractor. Operators must prevent leakage, arrange leak checks and keep records, use only certified personnel and companies, ensure leak detection systems are fitted and verified where required, and recover refrigerant before dismantling or disposal.
336 words, about 2 min03Refrigerant Safety: Classification, Asphyxiation, Pressure and Decomposition
ASHRAE 34 / ISO 817 give each refrigerant a toxicity letter (A = lower toxicity, B = higher) and a flammability number (1 = none, 2L = lower flammability, 2, 3 = higher). R-410A, R-134a, R-407C and R-744 are A1; R-32 and R-1234yf are A2L; R-290 propane is A3; ammonia R-717 is B2L.
328 words, about 2 min04Cylinder Handling, Storage, Transport and Filling Limits
Check the label and confirm the refrigerant identity, the tare weight, the last periodic inspection date, the valve condition, and whether it is a dedicated recovery cylinder. Never rely on colour alone: colours differ between suppliers and countries, and an unlabelled or unidentifiable cylinder should be refused.
338 words, about 2 min05Risk Assessment and PPE Selection
Five steps: identify the hazards, decide who may be harmed and how, evaluate the risks and decide on controls, record the significant findings, and review and update. It must be task-specific, completed before work starts, and reviewed whenever the task, the equipment, the people or the environment change.
1,375 words, about 7 min