Table of Contents
Task B-5 Performs work site preparation
Task Descriptor
Refrigeration and air conditioning mechanics prepare the work site to accomplish their tasks. They ensure the availability and storage of material and supplies on site to be used for the job at hand.
B-5.01 Maintains safe work environment
Essential Skills: Document Use, Thinking, Oral Communication
B-5.01 Maintains safe work environment
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| B-5.01.01P |
identify area for storage of tools, equipment and supplies |
area for storage of tools, equipment and supplies is identified according to site condition and job location |
| B-5.01.02P |
locate safety equipment, muster sites and emergency exits |
safety equipment, muster sites and emergency exits are located |
| B-5.01.03P |
identify on-site hazards |
on-site hazards are identified |
| B-5.01.04P |
locate isolation points |
isolation points are located according to site conditions |
| B-5.01.05P |
coordinate site access for equipment |
site access for equipment is coordinated |
| B-5.01.06P |
erect barricades and signage |
barricades and signage are erected according to site safety requirements and jurisdictional regulations to warn others |
| B-5.01.07P |
perform job hazard assessment |
job hazard assessment is performed according to job specification, site conditions, company policies and jurisdictional regulations |
| B-5.01.08P |
eliminate or mitigate hazards in work area |
work area hazards are eliminated or mitigated |
| B-5.01.09P |
identify PPE required |
PPE required for task is identified |
| B-5.01.10P |
determine location and layout of equipment and systems |
location and layout of equipment and systems are determined according to site conditions and design specifications |
Range of Variables
- hazards include: utility distribution, other construction activities, other trade activities
- isolation points include: water, gas, electrical shut-offs, fuels, compressed gases, steam, utility services
- equipment includes: cranes, personnel lifts, delivery trucks, dollies, carts, hoists, lifts
- job hazard assessment includes: job tasks, identify hazards, identify controls, identify PPE
- PPE includes: safety glasses, head protection, high-visibility apparel, foot protection, hand protection
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| B-5.01.01L |
demonstrate knowledge of the procedures used to prepare a work site |
define terminology associated with job coordination |
| describe the procedures used to coordinate work requirements |
| B-5.01.02L |
demonstrate knowledge of safe work practices |
identify workplace hazards and describe safe work practices and equipment |
| describe the procedures used to conduct a job hazard assessment |
| describe the procedures used to maintain a safe work environment and to remediate the potential dangers related to workplace hazards |
| B-5.01.03L |
demonstrate knowledge of codes and regulations pertaining to work site safety |
interpret codes and regulations pertaining to workplace hazards and safe work practices |
Range of Variables
- hazards include: utility distribution, other construction activities, other trade activities
- job hazard assessment includes: job tasks, identify hazards, identify controls, identify PPE
B-5.02 - Handles materials and supplies
Essential Skills: Document Use, Oral Communication, Working with Others
B-5.02 - Handles materials and supplies
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| B-5.02.01P |
receive and verify delivered materials |
delivered materials are received and verified using packing slips, serial numbers, model numbers and catalogue numbers according to specifications |
| B-5.02.02P |
inspect delivered materials |
delivered materials are inspected to detect shipping damage and compliance with specifications |
| B-5.02.03P |
label materials and supplies |
materials and supplies are labelled according to WHMIS regulations and company policies |
| B-5.02.04P |
secure materials and supplies |
materials and supplies are secured by using equipment when being stored or shipped according to jurisdictional regulations, manufacturers’ specifications and site conditions |
| B-5.02.05P |
manually lift materials and supplies |
materials and supplies are manually lifted according to OH&S regulations and industry standards to avoid personal injury and damage to materials, supplies and equipment |
| B-5.02.06P |
store materials and supplies |
materials and supplies are stored to prevent damage, deterioration, discharge or theft according to jurisdictional regulations, manufacturers’ specifications and site conditions |
| B-5.02.07P |
dispose of waste materials |
waste materials are disposed of according to jurisdictional regulations and site conditions |
Range of Variables
- equipment includes: chains, straps, slings, blocks, stickers
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| B-5.02.01L |
demonstrate knowledge of the procedures used to handle materials and supplies |
identify sources of information relevant to handling materials and supplies |
| describe the considerations for handling materials and supplies |
| B-5.02.02L |
demonstrate knowledge of regulations pertaining to the handling of materials and supplies |
identify and interpret the regulatory requirements and responsibilities for handling materials and supplies |
| identify and interpret the regulatory requirements and responsibilities for disposing of waste materials |
Task B-6 Performs trade activities
Task Descriptor
Refrigeration and air conditioning mechanics perform routine trade activities to enable them to complete the tasks of their trade. The activities are performed at various stages of the work.
B-6.01 - Performs brazing and soldering
Essential Skills: Document Use, Oral Communication, Thinking
B-6.01 - Performs brazing and soldering
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| B-6.01.01P |
purge pipes with inert gases |
pipes are purged with inert gases to prevent oxidation during soldering and brazing |
| B-6.01.02P |
prepare pipe using methods |
pipe is prepared using methods and according to industry standards |
| B-6.01.03P |
select tip size and torch type |
tip size and torch type are selected according to pipe size, job location and industry standards |
| B-6.01.04P |
select safety procedures |
safety procedures are selected according to task at hand |
| B-6.01.05P |
select brazing and soldering material |
brazing and soldering material are selected according to job requirements and jurisdictional regulations |
| B-6.01.06P |
select and place heat protection materials |
heat protection materials are selected and placed to protect surrounding area or components according to manufacturers’ recommendations and safety procedures |
| B-6.01.07P |
solder and braze components |
components are soldered and brazed using compressed gases and according to jurisdictional regulations and safety procedures |
Range of Variables
- methods include: cutting, cleaning, sanding, reaming
- torch type includes: air fuel, oxy fuel
- safety procedures include: identify hot work permit, identify fire watch requirements
- job requirements include: metal compatibility, pressure requirements
- heat protection materials include: heat blankets, heat sinks
- components include: fittings, accessories, compressors, evaporators, metering devices, condensers
- compressed gases are oxy-fuel and air-fuel
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| B-6.01.01L |
demonstrate knowledge of the procedures used to solder and braze piping and fittings |
identify types of soldering and brazing materials and fillers, and describe their characteristics and applications |
| identify types of pipe and fittings |
| identify hazards and describe safe work practices pertaining to soldering and brazing |
| describe procedures used to solder and braze piping and fittings |
| B-6.01.02L |
demonstrate knowledge of codes and regulations pertaining to soldering and brazing |
interpret codes and regulations pertaining to soldering and brazing |
Range of Variables
- types of pipe and fittings include: copper, stainless steel, steel, copper-iron alloy, brass, aluminum
B-6.02 - Performs leak and pressure tests on system
Essential Skills: Document Use, Thinking, Numeracy
B-6.02 - Performs leak and pressure tests on system
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| B-6.02.01P |
select and use tools and equipment |
tools and equipment are selected and used according to manufacturers’ specifications |
| B-6.02.02P |
prepare system for leak and/or pressure test |
system is prepared for leak and/or pressure test according to manufacturers’ recommendations, industry standards and jurisdictional regulations |
| B-6.02.03P |
remove or isolate devices or sections of the system that could be damaged during pressure test |
devices or sections of the system that could be damaged during pressure test are removed or isolated |
| B-6.02.04P |
pressurize system with system compatible liquids and/or gases to perform pressure test |
system is pressurized with system compatible liquids and/or gases to perform pressure test to ensure system integrity according to jurisdictional regulations and job requirements |
| B-6.02.05P |
interpret and record leak and pressure test results |
leak and pressure test results are interpreted and recorded to verify system integrity within a given period |
Range of Variables
- tools and equipment include: electronic leak detectors, certified gauges, regulators, leak detection solution
- liquids include: water, glycol, brine
- gases include: nitrogen, air (for secondary system), helium, argon, CO2, inert gases
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| B-6.02.01L |
demonstrate knowledge of the procedures used to perform leak and pressure tests on HVAC/R systems |
define terminology associated with leak and pressure testing |
| identify hazards and describe safe work practices pertaining to leak and pressure testing |
| identify tools and equipment used to leak and pressure test an HVAC/R system, and describe their applications and procedures for use |
| describe the procedures used to leak and pressure test an HVAC/R system |
| determine approved and compatible liquids or gases required for HVAC/R system pressure test |
| calculate volumes of liquids and gases required to pressure test an HVAC/R system |
| B-6.02.02L |
demonstrate knowledge of codes and regulations pertaining to leak and pressure tests |
interpret codes and regulations pertaining to leak and pressure testing |
Range of Variables
- tools and equipment include: electronic leak detectors, certified gauges, regulators, leak detection solution
- liquids include: water, glycol, brine
- gases include: nitrogen, air (for secondary system), helium, argon, CO2, inert gases
B-6.03 - Evacuates systems
Essential Skills: Document Use, Continuous Learning, Thinking
B-6.03 - Evacuates systems
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| B-6.03.01P |
select and use tools and equipment |
tools and equipment are selected and used according to manufacturers’ specifications and job requirements |
| B-6.03.02P |
check integrity of vacuum pump |
integrity of vacuum pump is checked to meet evacuation requirements |
| B-6.03.03P |
ensure system is at atmospheric pressure |
system is at atmospheric pressure |
| B-6.03.04P |
connect vacuum pump to system |
vacuum pump is connected to system according to manufacturers’ specifications |
| B-6.03.05P |
perform evacuation |
evacuation is performed using evacuation tools and equipment according to manufacturers’ recommendations, industry standards and jurisdictional regulations |
| B-6.03.06P |
perform standing vacuum test |
standing vacuum test is performed according to manufacturers’ specifications and jurisdictional regulations |
| B-6.03.07P |
interpret and record evacuation test results |
evacuation test results are interpreted and recorded to verify system integrity |
Range of Variables
- tools and equipment include: compound gauges, micron gauges, vacuum pumps
- evacuation is removal of non-condensables to accepted levels
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| B-6.03.01L |
demonstrate knowledge of the procedures used to evacuate HVAC/R systems |
define terminology associated with evacuation of HVAC/R systems |
| identify hazards and describe safe work practices pertaining to the evacuation of HVAC/R systems |
| identify tools and equipment used to evacuate HVAC/R systems, and describe their applications and procedures for use |
| describe the procedures used to evacuate and dehydrate HVAC/R systems |
| B-6.03.02L |
demonstrate knowledge of codes and regulations pertaining to evacuation of HVAC/R systems |
interpret codes and regulations pertaining to evacuation of HVAC/R systems |
Range of Variables
- evacuation is removal of non-condensables to accepted levels
- tools and equipment include: compound gauges, micron gauges, vacuum pumps
- procedures include: single evacuation, multiple evacuation (sweeping), use of cold traps
B-6.04 - Uses refrigerants, gases and oils
Essential Skills: Document Use, Reading, Thinking
B-6.04 - Uses refrigerants, gases and oils
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| B-6.04.01P |
select and use tools and equipment |
tools and equipment are selected and used according to task |
| B-6.04.02P |
select refrigerants |
refrigerants are selected according to system, manufacturers’ specifications and jurisdictional regulations |
| B-6.04.03P |
select refrigerant oils |
refrigerant oils are selected according to refrigerant, temperature range of system and manufacturers’ specifications |
| B-6.04.04P |
recover refrigerant and refrigerant oil |
refrigerant and refrigerant oil are recovered when repairing, relocating, troubleshooting and decommissioning systems according to manufacturers’ specifications, codes and jurisdictional regulations |
| B-6.04.05P |
select gases |
gases are selected according to task |
| B-6.04.06P |
dispose of refrigerants and refrigerant oils |
refrigerants and refrigerant oils are disposed of according to environmental protocols and jurisdictional regulations |
| B-6.04.07P |
transport and store refrigerants, gases and refrigerant oils |
refrigerants, gases and refrigerant oils are transported and stored according to jurisdictional regulations and manufacturers’ specifications |
| B-6.04.08P |
charge system with refrigerant oil and refrigerants |
system is charged with refrigerant oil and refrigerants according to manufacturers’ specifications and job-specific requirements |
Range of Variables
- tools and equipment include: gauges, scales, pumps, recovery units, regulators, torches
- refrigerants include: primary (chlorofluorocarbon [CFC], hydrofluorocarbon [HFC], hydrofluoroolefin [HFO], hydrochlorofluorocarbon [HCFC], hydrocarbons [HC]), natural (R744, R717), secondary (water, glycol solutions, brine solutions)
- refrigerant oils include: vacuum pump oil, cutting oil, compressor oil
- gases include: nitrogen, acetylene, oxygen, carbon dioxide, argon, helium
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| B-6.04.01L |
demonstrate knowledge of refrigerants, gases and refrigerant oils, their applications and procedures for use |
define terminology associated with refrigerants, gases and refrigerant oils |
| identify hazards and safe work practices pertaining to refrigerants, gases and refrigerant oils |
| identify types of refrigerants and describe their characteristics and applications |
| identify the safety classifications of refrigerants |
| identify types of refrigerant containers and colour coding classifications |
| identify types of refrigerant oils and describe their characteristics and applications |
| identify types of gases and describe their characteristics and applications |
| explain the effects of refrigerants, gases and refrigerant oils on the environment |
| describe the procedures used to perform refrigerant and refrigerant oil conversions |
| describe the procedures used to store and transport refrigerants, gases and refrigerant oils |
| B-6.04.02L |
demonstrate knowledge of codes and regulations pertaining to refrigerants, gases and refrigerant oils |
interpret codes and regulations pertaining to refrigerants, gases and refrigerant oils |
| B-6.04.03L |
demonstrate knowledge of the procedures used to recover and recycle refrigerants and refrigerant oils |
describe the procedures used to recover and recycle refrigerants and refrigerant oils |
Range of Variables
- refrigerants include: primary (chlorofluorocarbon [CFC], hydrofluorocarbon [HFC], hydrofluoroolefin [HFO], hydrochlorofluorocarbon [HCFC], hydrocarbons [HC]), natural (R744, R717), secondary (water, glycol solutions, brine solutions)
- gases include: nitrogen, acetylene, oxygen, carbon dioxide, argon, helium
- refrigerant oils include: vacuum pump oil, cutting oil, compressor oil
- safety classifications of refrigerants are: toxicity and flammability
- effects of refrigerants, gases and refrigerant oils on the environment include: ozone depletion potential, global warming potential, pollution, contamination
B-6.05 - Performs field wiring of systems
Essential Skills: Document Use, Writing, Continuous Learning
B-6.05 - Performs field wiring of systems
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| B-6.05.01P |
select and use tools and equipment |
tools and equipment are selected and used according to manufacturers’ specifications |
| B-6.05.02P |
verify circuit is de-energized |
circuit is de-energized to avoid personal injury or damage to equipment by following lock-out and tag-out procedures |
| B-6.05.03P |
verify voltage, phasing, and motor wiring configuration |
voltage, phasing, and motor wiring configuration is verified to ensure correct component selection according to manufacturers’ requirements |
| B-6.05.04P |
identify correctly sized fusing and overloads |
correctly sized fusing and overloads are identified according to jurisdictional regulations and manufacturers’ specifications |
| B-6.05.05P |
interpret electrical schematics and termination points |
electrical schematics and termination points are interpreted according to manufacturers’ and design specifications, and jurisdictional regulations |
| B-6.05.06P |
select wire size and type |
wire size and type is selected according to amperage, insulation rating, compatibility with other components, and codes and jurisdictional regulations |
| B-6.05.07P |
select components |
components are selected according to locations where they will be used and jurisdictional regulations |
| B-6.05.08P |
route and secure wiring |
wiring is routed and secured according to codes, jurisdictional regulations and site requirements |
| B-6.05.09P |
terminate wiring to related equipment |
wiring to related equipment is terminated using components |
| B-6.05.10P |
label or tag wiring with wire markers |
wiring is labelled or tagged with wire markers for identification and service purposes according to jurisdictional regulations and design specifications |
| B-6.05.11P |
update wiring diagrams |
wiring diagrams are updated to record changes and modifications |
Range of Variables
- tools and equipment include: crimpers, cutters, pliers, strippers, screwdrivers, hex keys
- components include: connectors, junction boxes, terminal strips
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| B-6.05.01L |
demonstrate knowledge of the fundamental concepts of electricity |
define terminology associated with electrical fundamentals |
| identify hazards and describe safe work practices pertaining to electricity |
| B-6.05.02L |
demonstrate knowledge of the procedures used to wire systems |
describe the procedures used to field wire systems |
| identify tools and equipment used to wire systems, and describe their applications and procedures for use |
| identify types of wiring termination |
| identify types and gauges of wire |
| identify types of components |
| B-6.05.03L |
demonstrate knowledge of codes and regulations pertaining to wiring of systems |
interpret codes and regulations pertaining to wiring of systems |
Range of Variables
- tools and equipment include: crimpers, cutters, pliers, strippers, screwdrivers, hex keys
- components include: connectors, junction boxes, terminal strips
- codes and regulations include: Canadian Electrical Code, jurisdictional regulations
B-6.06 - Applies sealants and adhesives
Essential Skills: Document Use, Thinking, Reading
B-6.06 - Applies sealants and adhesives
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| B-6.06.01P |
select sealants and adhesives |
sealants and adhesives are selected according to manufacturers’ recommendations, engineers’ specifications and compatibility with other materials |
| B-6.06.02P |
select and use tools and equipment |
tools and equipment are selected and used according to manufacturers’ specifications |
| B-6.06.03P |
ensure adequate ventilation during application of sealants and adhesives |
ventilation is adequate during application of sealants and adhesives according to manufacturers’ specifications and jurisdictional regulations |
| B-6.06.04P |
inspect and prepare sealing surfaces |
sealing surfaces are inspected and prepared before sealants or adhesives are applied according to manufacturers’ specifications |
| B-6.06.05P |
use sealant and adhesive |
sealant and adhesive is used according to codes, regulations, manufacturers’ specifications and job requirements |
Range of Variables
- sealants include: silicone, spray foam, thread seal, fire stop, duct seal, mastic
- adhesives include: insulation glues, primers, pipe adhesives
- tools and equipment include: brushes, caulking guns, paint scrapers, rollers
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| B-6.06.01L |
demonstrate knowledge of sealants and adhesives, their applications and procedures for use |
identify types of sealants and adhesives and describe their characteristics and applications |
| describe the procedures used to apply sealants and adhesives |
| identify tools and equipment used to apply sealants and adhesives, and describe their applications and procedures for use |
| B-6.06.02L |
demonstrate knowledge of codes and regulations pertaining to sealants and adhesives |
interpret codes and regulations pertaining to sealants and adhesives |
Range of Variables
- sealants include: silicone, spray foam, thread seal, fire stop, duct seal, mastic
- adhesives include: insulation glues, primers, pipe adhesives
- tools and equipment include: brushes, caulking guns, paint scrapers, rollers