Major Work Activity D - Liquefied petroleum (LP) gas systems
Table of Contents
Task D-12 Diagnoses LP gas systems
Task descriptor
Recreation vehicle service technicians require knowledge of codes and regulations related to LP gas systems to diagnose and to ensure a safe and reliable repair. They also need to understand and apply the basic principles of LP gas including the effects of temperature and pressure on the system. The high pressure gas system runs from the supply tank to the regulator, while the low pressure gas system runs from the regulator to the appliances.
D-12.01-Diagnoses LP gas supply systems (high pressure)
| NL | NS | PE | NB | QC | ON | MB | SK | AB | BC | NT | YT | NU |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NV | yes | NV | NV | yes | yes | yes | yes | yes | yes | ND | NV | ND |
| Reference code | Performance Criteria | Evidence of Attainment |
|---|---|---|
| D-12.01.01P | confirm customer concern | customer concern is confirmed on work order to isolate source of problem and determine required diagnostic actions |
| D-12.01.02P | select and use tools and testing equipment | tools and testing equipment are selected and used according to job task |
| D-12.01.03P | inspect system and components | system and components are inspected according to requirements |
| D-12.01.04P | inspect system and containers | system and containers are visually inspected for expiry date and damage |
| D-12.01.05P | locate leaks | leaks are located according to tests |
| D-12.01.06P | perform tests | tests are performed according to requirements |
| D-12.01.07P | determine cause of fault | cause of fault is determined according to system tests and inspections |
| D-12.01.08P | determine servicing required | servicing required is determined according to tests and inspections |
| D-12.01.09P | document work | work is documented according to company policies, procedures and jurisdictional regulations |
Range of variables
- components include: hoses, container, protective coverings, fasteners, regulators, valves
- requirements include: component placement, customer needs, codes, manufacturers’ specifications, jurisdictional regulations
- damage includes: rust, dents, damaged welds, damaged supply lines and connections
- tests include: leak, fuel level, visual inspections, sensory indicators
- cause of fault includes: kinked hose, punctured hose, seized excess flow valve
- servicing includes: repair or replacement of defective components
| Reference code | Learning Outcomes | Learning Objectives |
|---|---|---|
| D-12.01.01L | demonstrate knowledge of LP gas supply systems (high pressure), their components, characteristics and applications | identify terminology associated with LP gas supply systems (high pressure) |
| identify LP gas supply systems (high pressure) and their components, and describe their characteristics and applications | ||
| describe characteristics and applications of LP gas | ||
| describe effects of contaminants | ||
| D-12.01.02L | demonstrate knowledge of procedures to diagnose LP gas supply systems (high pressure) | identify tools and testing equipment used to diagnose LP gas supply systems (high pressure), and describe their procedures for use |
| describe procedures to diagnose LP gas supply systems (high pressure) | ||
| describe procedures to perform tests | ||
| D-12.01.03L | demonstrate knowledge of certification requirements to diagnose LP gas supply systems (high pressure) | identify certification requirements to diagnose LP gas supply systems (high pressure) |
| D-12.01.04L | demonstrate knowledge of regulatory requirements to diagnose LP gas supply systems (high pressure) | identify codes, standards and regulations to diagnose LP gas supply systems (high pressure) |
Range of variables
- components include: hoses, container, protective coverings, fasteners, regulators, valves
- tests include: leak, fuel level, visual inspections, sensory indicators
D-12.02-Diagnoses LP gas distribution systems (low pressure)
| NL | NS | PE | NB | QC | ON | MB | SK | AB | BC | NT | YT | NU |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NV | yes | NV | NV | yes | yes | yes | yes | yes | yes | ND | NV | ND |
| Reference code | Performance Criteria | Evidence of Attainment |
|---|---|---|
| D-12.02.01P | confirm customer concern | customer concern is confirmed on work order to isolate source of problem and determine required diagnostic actions |
| D-12.02.02P | select and use tools and testing equipment | tools and testing equipment are selected and used according to job task |
| D-12.02.03P | inspect low pressure distribution system | low pressure distribution system is visually inspected according to requirements and for damage |
| D-12.02.04P | perform tests | tests are performed according to requirements |
| D-12.02.05P | locate leaks | leaks are located according to system tests |
| D-12.02.06P | determine cause of fault | cause of fault is determined according to system tests |
| D-12.02.07P | determine servicing required | servicing required is determined according to tests and inspections |
| D-12.02.08P | document work | work is documented according to company policies, procedures and jurisdictional regulations |
Range of variables
- tools and testing equipment include: hand tools, power tools, leak detectors, manometer
- requirements include: component placement, customer needs, codes, manufacturers’ specifications, jurisdictional regulations
- damage includes: impacts, broken fittings, unsecured gas lines
- tests include: working pressure, lockup, leak, visual inspection, sensory indicators
- cause of fault includes: contaminants, punctured lines, defective components
- servicing includes: repair or replacement of defective components
| Reference code | Learning Outcomes | Learning Objectives |
|---|---|---|
| D-12.02.01L | demonstrate knowledge of LP gas distribution systems (low pressure), their components, characteristics and applications | identify terminology associated with LP gas distribution systems (low pressure) |
| identify LP gas supply systems (low pressure) and their components, and describe their characteristics and applications | ||
| identify containers, and describe their characteristics and applications | ||
| describe characteristics and applications of LP gas | ||
| describe effects of contaminants | ||
| D-12.02.02L | demonstrate knowledge of procedures to diagnose LP gas distribution systems (low pressure) | identify tools and testing equipment used to diagnose LP gas distribution systems (low pressure), and describe their procedures for use |
| describe procedures to diagnose LP gas distribution systems (low pressure) | ||
| describe procedures to perform tests | ||
| D-12.02.03L | demonstrate knowledge of certification requirements to diagnose LP gas distribution systems (low pressure) | identify certification requirements to diagnose LP gas distribution systems (low pressure) |
| D-12.02.04L | demonstrate knowledge of regulatory requirements to diagnose LP gas distribution systems (low pressure) | identify codes, standards and regulations to diagnose LP gas distribution systems (low pressure) |
Range of variables
- components include: hoses, containers, protective coverings, fasteners, regulators, valves
- tools and testing equipment include: hand tools, power tools, leak detectors, manometer
- tests include: working pressure, lockup, leak, visual inspection, sensory indicators
Task D-13 Services LP gas systems
Task descriptor
- Recreation vehicle service technicians must be able to maintain, repair, replace and install LP gas systems and their components according to jurisdictional regulations to ensure customer safety and satisfaction.
- While working on the systems, recreation vehicle service technicians must be aware of the safety hazards associated with LP gas.
D-13.01-Maintains LP gas systems
| NL | NS | PE | NB | QC | ON | MB | SK | AB | BC | NT | YT | NU |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NV | yes | NV | NV | yes | yes | yes | yes | yes | yes | ND | NV | ND |
| Reference code | Performance Criteria | Evidence of Attainment |
|---|---|---|
| D-13.01.01P | select and use tools and testing equipment | tools and testing equipment are selected and used according to job task |
| D-13.01.02P | check regulator pressure | regulator pressure is checked according to requirements using tests |
| D-13.01.03P | adjust regulator | regulator isadjusted according to diagnosis |
| D-13.01.04P | verify regulator adjustments | regulator adjustments are verified according to requirements and tests |
| D-13.01.05P | document work | work is documented according to company policies, procedures and jurisdictional regulations |
Range of variables
- tools and testing equipment include: hand tools, power tools, leak detectors, manometer
- requirements include: component placement, customer needs, codes, manufacturers’ specifications, jurisdictional regulations
- tests include: working pressure, lockup, leak, sensory indicators
| Reference code | Learning Outcomes | Learning Objectives |
|---|---|---|
| D-13.01.01L | demonstrate knowledge of LP gas systems, their components, characteristics and applications | identify terminology associated with LP gas systems and their components |
| identify LP gas supply systems and their components, and describe their characteristics and applications | ||
| identify types of valves, and describe their characteristics and applications | ||
| identify types and sizes of pipes and hoses, and describe their characteristics and applications | ||
| identify types of regulators, and describe their characteristics and applications | ||
| identify types of sealants, fittings and threads, and describe their characteristics and applications | ||
| describe effects of contaminants | ||
| D-13.01.02L | demonstrate knowledge of procedures to maintain LP gas systems | identify tools and testing equipment used to maintain LP gas systems, and describe their procedures for use |
| describe procedures to maintain LP gas systems | ||
| describe procedures to perform tests | ||
| D-13.01.03L | demonstrate knowledge of certification requirements to maintain LP gas systems | identify certification requirements to maintain LP gas systems |
| D-13.01.04L | demonstrate knowledge of regulatory requirements to maintain LP gas systems | identify codes, standards and regulations to maintain LP gas systems |
Range of variables
- components include: hoses, containers, protective coverings, fasteners, regulators, valves
- tools and testing equipment include: hand tools, power tools, leak detectors, manometer
- tests include: working pressure, lockup, leak, sensory indicators
D-13.02-Repairs LP gas systems
| NL | NS | PE | NB | QC | ON | MB | SK | AB | BC | NT | YT | NU |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NL | NS | PE | NB | QC | ON | MB | SK | AB | BC | NT | YT | NU |
| NV | yes | NV | NV | yes | yes | yes | yes | yes | yes | ND | NV | ND |
| Reference code | Performance Criteria | Evidence of Attainment |
|---|---|---|
| D-13.02.01P | select and use tools and testing equipment | tools and testing equipment are selected and used according to job task |
| D-13.02.02P | access repair area | repair area is accessed by removing items or by lifting RV |
| D-13.02.03P | replace or repair defective components | defective components are replaced or repaired according to diagnosis |
| D-13.02.04P | re-secure cylinders and distribution system | cylinders and distribution system is re-secured according to codes |
| D-13.02.05P | remove contaminants | contaminants are removed to maximize supply of LP gas |
| D-13.02.06P | perform drop pressure test and adjust pressure | drop pressure test is performed and pressure adjusted according to requirements |
| D-13.02.07P | verify repair | repair is verified by performing tests according to requirements |
| D-13.02.08P | document work | work is documented according to company policies, procedures and jurisdictional regulations |
Range of variables
- tools and testing equipment include: hand tools, power tools, leak detectors, manometer, flaring tools
- items include: heat shields, tank covers, access panels
- components include: hoses, containers, protective coverings, fasteners, regulators, valves
- requirements include: component placement, codes, manufacturers’ specifications, jurisdictional regulations
- tests include: working pressure, lockup, leak, sensory indicators
| Reference code | Learning Outcomes | Learning Objectives |
|---|---|---|
| D-13.02.01L | demonstrate knowledge of LP gas systems, their components, characteristics and applications | identify terminology associated with LP gas systems and their components |
| identify LP gas supply systems and their components, and describe their characteristics and applications | ||
| identify types of valves, and describe their characteristics and applications | ||
| identify types and sizes of pipes and hoses, and describe their characteristics and applications | ||
| identify types of regulators, and describe their characteristics and applications | ||
| identify types of sealants, fittings and threads, and describe their characteristics and applications | ||
| describe effects of contaminants | ||
| D-13.02.02L | demonstrate knowledge of procedures to repair LP gas systems and their components | identify tools and testing equipment used to repair LP gas systems and their components, and describe their procedures for use |
| describe procedures to repair LP gas systems and their components | ||
| describe procedures to perform tests | ||
| describe procedures to remove contaminants | ||
| D-13.02.03L | demonstrate knowledge of certification requirements to maintain LP gas systems | identify certification requirements to maintain LP gas systems |
| D-13.02.04L | demonstrate knowledge of regulatory requirements to maintain LP gas systems | identify codes, standards and regulations to maintain LP gas systems |
Range of variables
- components include: hoses, containers, protective coverings, fasteners, regulators, valves
- tools and testing equipment include: hand tools, power tools, leak detectors, manometer, flaring tools
- tests include: working pressure, lockup, leak, sensory indicators
D-13.03-Installs LP gas systems
| NL | NS | PE | NB | QC | ON | MB | SK | AB | BC | NT | YT | NU |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NV | yes | NV | NV | yes | yes | yes | yes | yes | yes | ND | NV | ND |
| Reference code | Performance Criteria | Evidence of Attainment |
|---|---|---|
| D-13.03.01P | select and use tools and testing equipment | tools and testing equipment are selected and used according to job task |
| D-13.03.02P | calculate load, demand and material | load, demand and material are calculated to determine installation strategy according to requirements |
| D-13.03.03P | access installation area | installation area is accessed by removing items, covers or lifting RV |
| D-13.03.04P | adjust area to accommodate new components | area is adjusted to accommodate new components according to requirements |
| D-13.03.05P | install components | components are installed according to requirements |
| D-13.03.06P | perform tests | tests are performed according to requirements |
| D-13.03.07P | verify operation | operation is verified according to requirements |
| D-13.03.08P | document work | work is documented according to company policies, procedures and jurisdictional regulations |
Range of variables
- tools and testing equipment include: hand tools, power tools, leak detectors, manometer, tubing cutters, flaring tools
- load includes: British thermal unit (BTU), volume, weight
- requirements include: component placement, codes, manufacturers’ specifications, jurisdictional regulations
- items include: heat shields, tank covers, access panels
- components include: hoses, containers, protective coverings, fasteners, regulators, valves
- tests include: working pressure, lockup, leak, sensory indicators
| Reference code | Learning Outcomes | Learning Objectives |
|---|---|---|
| D-13.03.01L | demonstrate knowledge of LP gas systems their components, characteristics and applications | identify terminology associated with LP gas systems and their components |
| identify LP gas supply systems and their components, and describe their characteristics and applications | ||
| identify types of valves, and describe their characteristics and applications | ||
| identify types and sizes of pipes and hoses, and describe their characteristics and applications | ||
| identify types of regulators, and describe their characteristics and applications | ||
| identify types of sealants, fittings and threads, and describe their characteristics and applications | ||
| describe effects of contaminants | ||
| D-13.03.02L | demonstrate knowledge of procedures to install LP gas systems and their components | identify tools and testing equipment used to install LP gas systems and their components, and describe their procedures for use |
| describe procedures to install LP gas systems and their components | ||
| describe routing procedures | ||
| describe procedures to perform tests | ||
| D-13.03.03L | demonstrate knowledge of certification requirements to maintain LP gas systems | identify certification requirements to maintain LP gas systems |
| D-13.03.04L | demonstrate knowledge of regulatory requirements to maintain LP gas systems | identify codes, standards and regulations to maintain LP gas systems |
Range of variables
- components include: hoses, containers, protective coverings, fasteners, regulators, valves
- tools and testing equipment include: hand tools, power tools, leak detectors, manometer, tubing cutters, flaring tools
- tests include: working pressure, lockup, leak, sensory indicators