This qualification will increase the level of competence required under EC Regulation
378/2008, the aims of the qualification are to:
- meet the legal requirements for candidates who work or want to work with hydrocarbon
gases, as engineers in the refrigeration, air conditioning and heat pump sector (RAC)
- allow candidates to learn, develop and practice the skills required for employment
to work with hydrocarbon gases
- Understand the specific health and safety requirements which apply to the installation,
servicing and maintaining and de-commissioning of hydrocarbon RAC systems
- Understand the environmental benefits of using hydrocarbon refrigerants
- Allow successful candidates to purchase HC refrigerants from BOC
The training course concludes with a theory multiple choice question paper and a
Candidates who attend this course must already have a F-Gas qualification (C&G 2079-11,
C&G 2079-12, Cskills J11 or Cskills J12)
Candidates are required to;
- Identify the hazards associated with hydrocarbon refrigerants; flammability, low
boiling point, asphyxiation, LFL, UFL, sources of ignition, practical limits and
- State and identify the commonly used refrigerant designations.
- State the requirements of hydrocarbon specific risk assessments
- Identify the appropriate fire extinguishers for work on hydrocarbon RAC systems.
- State the appropriate sources of health and safety information when installing, servicing
and maintaining and de-commissioning of RAC systems
- State the regulations, codes of practice, and industry recommendations appropriate
to the installation, servicing and maintenance and de-commissioning of RAC systems,
including working with refrigerants.
- State the occupancy classifications and charge size limitations for refrigeration
- State charge size limitations for human comfort cooling and heating for air conditioning
- Identify the specific system features and components which apply to hydrocarbon systems;
electrical devices, electrical enclosures, associated electrical devices (including
halocarbon systems) & compressors (including starter and associated electrics).
- Identify the features and characteristics of; critical charge systems & oil compatibility.
- State the properties, advantages and disadvantages of hydrocarbon refrigerants including:
leakage implications (direct and indirect), thermodynamic properties, cooling capacity
and energy efficiency, density & not stenched.
- Explain why hydrocarbons are not suitable for retro-filling into halocarbon systems.
- Identify typical applications of hydrocarbon RAC systems: integral (plug in systems),
fluid chillers, high stage CO2 cascade systems, split AC systems & domestic fridge
freezers (ISO butane).
- State the requirements for completing a risk assessment for work on hydrocarbon RAC
- State the requirements for creating and maintaining a safe working area, including
requirements for temporary zoning.
- Identify appropriate tools and equipment for work on hydrocarbon RAC systems.
- Identify occupancy class.
- Identify the maximum refrigerant charge based on occupancy class.
- Calculate the maximum charge based on the practical limit.
- Determine from calculations the system specific maximum charge.
- State the methods and procedures for: strength integrity testing, tightness testing,
leak testing & evacuation and dehydration.
- State the procedures for charging hydrocarbon refrigerants into systems.
- State the procedures for determining when charge is correct.
- State the records to be completed prior to handover.
- State the requirements for safely labelling hydrocarbon RAC systems.
- Specify the information that should be provided to customers, including; operation
of system controls, using only appropriately trained servicing personnel & restrictions
on the relocation of equipment.
- Identify appropriate ‘like for like’ replacement components for the following; electrical
devices, electrical enclosures, associated electrical devices (including halocarbon
systems) & compressors (including starter and associated electrics).
- State the importance of maintaining the integrity of sealed electrical enclosures.
- State appropriate methods for accessing and sealing hydrocarbon systems.
- Specify the requirements for recovering hydrocarbon refrigerants, including situations
when it may be safe to vent refrigerants to atmosphere.
- State the requirements for the safe use of vacuum pumps evacuating hydrocarbon systems.
- Identify the safe procedures for handling potentially hazardous systems materials,
including: hydrocarbon refrigerants.
- Identify work sequences for decommissioning and making safe a system in accordance
with appropriate industry procedures.
Candidates are required to;
- Complete a location specific risk assessment (using a dynamic risk assessment template).
- Establish and maintain a safe working area.
- Select appropriate tools, equipment and PPE for work on hydrocarbon RAC systems.
- Calculate the safe fill weight for the recovery cylinder (density difference between
HFCs & HCs).
- Connect equipment in preparation for recovery.
- Recover hydrocarbon refrigerant to a prescribed pressure.
- Fill the system with Nitrogen to a prescribed pressure and release to atmosphere.
- Un-braze specified component.
- Re-braze specified component while purging Nitrogen through pipework.
- Pressure test joints (containment).
- Evacuate to below 2000 microns.
- Re-charge with specified refrigerant weight.
- Run system and check operation.
- Remove charging equipment.
- Seal system and complete leak test with appropriate equipment.
- Complete service records as appropriate.
It should be stressed than regulation 378/2008 does not stipulate any required qualification,
only that the engineer should be competent according to EN 13313