Task G-25 Prepares system for commissioning, start-up and turnover
Table of Contents
Task Descriptor
Steamfitters/Pipefitters must carefully pre-check and isolate the systems as necessary when performing commissioning and start-up procedures. This is done for protection of the system, the surrounding areas and safety of personnel. They must also select proper commissioning equipment, reference system specifications and procedures, and include any accessories required.
G-25.01 - Flushes system
G-25.01 - Flushes system
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| G-25.01.01P |
select and use tools and equipment |
tools and equipment are selected and used according to job |
| G-25.01.02P |
set up pigging devices, launchers and receivers |
pigging devices, launchers and receivers are set up for cleaning of pipe |
| G-25.01.03P |
select medium |
medium to flush piping system and equipment is selected according to piping system |
| G-25.01.04P |
install temporary pipe |
temporary pipe for delivering flushing medium is securely fastened to system |
| G-25.01.05P |
follow flushing procedures |
flushing procedures are carried out according to engineers’ specifications |
| G-25.01.06P |
drain medium from system |
medium is drained from system, and low point drains and high point vents are opened |
| G-25.01.07P |
recover and dispose of medium |
medium is disposed of according to jurisdictional environmental regulations and guidelines |
| G-25.01.08P |
complete documentation |
documentation is completed according to job specifications and witnessed by client or consultant engineer |
Range of Variables
- tools and equipment include: see Appendix B
- medium includes: water, water/glycol mix, methanol, acid flush, compressed gas, steam, oil
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| G-25.01.01L |
demonstrate knowledge of system flushing procedures |
identify types of flushing medium and describe their applications |
| identify sources of information pertaining to system flushing |
| identify tools and equipment used to flush systems, and describe their applications and procedures for use |
| identify hazards, and describe safe work practices pertaining to system flushing |
| describe procedures to perform system flushing |
| G-25.01.02L |
demonstrate knowledge of regulatory requirements to flush systems |
identify jurisdictional regulations for chemical treatment and disposal of medium |
Range of Variables
- medium includes: water, water/glycol mix, methanol, acid flush, compressed gas, steam, oil
- sources of information include: manufacturers’ and engineers’ specifications, WHMIS information
- tools and equipment include: see Appendix B
- procedures to perform system flushing include: checking vents and drains, attaching hoses, filling system
- jurisdictional regulations include: by-laws, standards, codes, ANSI, CSA, OH&S, ASME
G-25.02 - Chemically treats system
G-25.02 - Chemically treats system
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| G-25.02.01P |
select and use tools and equipment |
tools and equipment are selected and used according to job |
| G-25.02.02P |
identify which systems require chemical treatment |
system to be treated is identified according to owner’s request and project engineers’ specifications |
| G-25.02.03P |
follow chemical treatment requirements and procedures |
chemical treatment requirements and procedures are followed according to chemical engineer guidelines |
| G-25.02.04P |
obtain a sample of medium that will be chemically treated |
sample of medium that will be chemically treated is bottled and labelled for testing |
| G-25.02.05P |
install and disconnect temporary pipe |
temporary pipe to introduce chemical into piping system is securely fastened to system, and disconnected |
| G-25.02.06P |
introduce chemicals to system and circulate |
chemicals are introduced to system and circulated according to levels of chemicals signed off by engineer |
| G-25.02.07P |
drain medium from system |
medium is drained from system, and low point drains and high point vents are opened |
| G-25.02.08P |
recover and dispose of chemical treatment waste fluid |
chemical treatment waste fluid is disposed of according to jurisdictional environmental regulations and guidelines |
| G-25.02.09P |
complete documentation |
documentation is completed according to site-specific requirements, jurisdictional environmental regulations and guidelines, and witnessed by client or consultant engineer |
Range of Variables
- tools and equipment include: see Appendix B
- chemical treatment requirements include: cycling, length of time, pressure
- chemical treatment procedures include: checking vents and drains, attaching hoses, filling system
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| G-25.02.01L |
demonstrate knowledge of chemical treatment procedures |
identify sources of information pertaining to chemical treatment |
| identify tools and equipment to chemically treat systems, and describe their applications and procedures for use |
| identify hazards, and describe safe work practices pertaining to chemical treatment |
| describe chemical treatments requirements |
| describe chemical treatment procedures |
| G-25.02.02L |
demonstrate knowledge of regulatory requirements to chemically treat systems |
identify jurisdictional regulations for disposal of chemical treatment |
Range of Variables
- sources of information include: manufacturers’ and engineers’ specifications, engineer, WHMIS information
- tools and equipment include: see Appendix B
- chemical treatment requirements include: cycling, length of time, pressure
- chemical treatment procedures include: checking vents and drains, attaching hoses, filling system
- jurisdictional regulations include: by-laws, standards, codes, ANSI, CSA, OH&S, ASME
G-25.03 - Pre-checks system for commissioning
G-25.03 - Pre-checks system for commissioning
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| G-25.03.01P |
identify system to be commissioned according to engineered drawings |
system to be commissioned is identified according to engineered drawings |
| G-25.03.02P |
select and use tools and equipment for commissioning |
tools and equipment are selected and used according to commissioning task and situation |
| G-25.03.03P |
perform visual inspection of system to be commissioned |
visual inspection of system to be commissioned is performed to identify deficiencies that do not conform to P&ID, standard piping practices and engineering specifications |
| G-25.03.04P |
complete pre-check list (punch list) |
pre-check list (punch list) is completed for conditions and components are confirmed to be installed in system |
| G-25.03.05P |
verify operating parameters |
operating parameters are verified according to manufacturers’ specifications for operation and design of system |
| G-25.03.06P |
determine method for filling system |
method for filling system is determined according to size and type of system |
Range of Variables
- identify system includes: ensuring documentation indicates system to be commissioned matches engineered drawings and traces piping back to equipment
- tools and equipment include: differential pressure gauges, probes, inline flowmeters, inline filters, temperature indicators
- deficiencies include: obstructions, leaks, removal of test equipment, improperly installed equipment
- conditions include: rotation of pumps and fans, support and anchor installation, flow direction of valves, installation and position of vents and drains
- operating parameters include: temperature, direction of flow, power, operating pressures, controls, safeties
- methods include: using hand pumps, centrifugal pumps, air compressor, gravity feed, energizing
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| G-25.03.01L |
demonstrate knowledge of system commissioning procedures |
identify sources of information pertaining to system commissioning |
| identify tools and equipment relating to system commissioning, and describe their applications and procedures for use |
| identify hazards, and describe safe work practices pertaining to system commissioning |
| identify methods for charging systems to operating design pressure |
| describe procedures to perform pre-checks |
| describe procedures to commission systems |
Range of Variables
- sources of information include: manufacturers’ and engineers’ specifications, drawings
- tools and equipment include: differential pressure gauges, probes, inline flowmeters, inline filters, temperature indicators
- safe work practices include: system isolation, LOTO procedures, use of testing medium
- procedures to perform pre-checks include: system isolation, check of equipment, piping for location and orientation, selection and connection of test equipment, system pressurization, system inspection and correction of leaks, documentation, removal of test equipment
- procedures to commission systems include: flushing, chemical treating, start-up and documentation, reinstatement after testing
G-25.04 - Selects and connects commissioning equipment
G-25.04 - Selects and connects commissioning equipment
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| G-25.04.01P |
identify design operating conditions |
operating conditions are identified according to reference drawings, system specifications and equipment specifications |
| G-25.04.02P |
select and use commissioning equipment |
commissioning equipment is selected and used according to job and conditions |
| G-25.04.03P |
select and use tools and equipment |
tools and equipment are selected and used according to job and conditions |
| G-25.04.04P |
perform basic check of commissioning equipment |
basic check of commissioning equipment is performed, and equipment is operational and calibrated |
| G-25.04.05P |
reinstate system components |
punch list indicates system components that were removed for system testing are reinstated |
Range of Variables
- operating conditions include: temperature, pressure, flow rate
- commissioning equipment includes: flow control meters, gauges, thermometers
- tools and equipment include: pipe wrenches, combination wrenches, adjustable wrenches
- system components include: pressure relief valves, gauges, control valves, thermometers, check valves, filters, probes, strainers, chemical pot feeders
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| G-25.04.01L |
demonstrate knowledge of system commissioning procedures |
identify sources of information pertaining to system commissioning |
| identify commissioning equipment and tools and equipment relating to system commissioning, and describe their applications and procedures for use |
| identify hazards, and describe safe work practices pertaining to system commissioning |
| identify methods for charging systems to operating design pressure |
| describe procedures to select and connect commissioning equipment |
| describe procedures to commission systems |
Range of Variables
- sources of information include: manufacturers’ and engineers’ specifications, drawings
- commissioning equipment includes: flow control meters, gauges, thermometers
- tools and equipment include: pipe wrenches, combination wrenches, adjustable wrenches
- safe work practices include: system isolation, LOTO procedures, use of testing medium
- procedures to commission systems include: flushing, chemical treating, start-up and documentation, reinstatement after testing
Task G-26 Commissions systems
Task Descriptor
Commissioning systems involves bringing the piping systems online. This can be done in collaboration with owners’ representatives or authority having jurisdiction (AHJ).
Steamfitters/pipefitters must commission a system to normal operational conditions to satisfy necessary codes, regulations, quality control standards, and contractual obligations. This encompasses making repairs and adjustments along the way and documenting all findings.
G-26.01 - Secures commissioning area
G-26.01 - Secures commissioning area
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| G-26.01.01P |
obtain approvals |
approvals to work in commissioning area are obtained, and written documentation and permits are valid |
| G-26.01.02P |
communicate and coordinate scheduled commissioning with other trades |
other trades are coordinated with and are given written documentation of scheduled commissioning |
| G-26.01.03P |
secure test area and clear area of personnel |
test area is secured and is cleared of unauthorized personnel after a walk-through inspection |
| G-26.01.04P |
perform LOTO procedures |
LOTO procedures are performed on system or equipment being commissioned according to company policies and procedures, and removal is documented |
Range of Variables
- approvals include: operating permits, AHJ permission
- communicate includes: written, electronic, radio, cell phones
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| G-26.01.01L |
demonstrate knowledge of system commissioning and its associated procedures |
identify sources of information pertaining to system commissioning |
| identify tools and equipment relating to system commissioning, and describe their applications and procedures for use |
| identify hazards, and describe safe work practices pertaining to system commissioning |
Range of Variables
- sources of information include: manufacturers’ and engineers’ specifications, drawings, operating conditions
- tools and equipment include: see Appendix B
- safe work practices include: system re‑energizing, LOTO procedures followed, safe handling of system medium, OH&S
G-26.02 - Pressurizes system
G-26.02 - Pressurizes system
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| G-26.02.01P |
fill system and vent |
drains are closed, air is removed and system is filled to high point vent |
| G-26.02.02P |
increase pressure in a controlled manner to operating pressure |
operating pressures are measured using pressure measuring devices, and are in accordance with engineering specifications and jurisdictional regulations |
Range of Variables
- pressure measuring devices include: pressure transducers, gauges
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| G-26.02.01L |
demonstrate knowledge of system commissioning and its associated procedures |
identify sources of information pertaining to system commissioning |
| identify tools and equipment relating to system commissioning, and describe their applications and procedures for use |
| identify hazards, and describe safe work practices pertaining to system commissioning |
| describe procedures to perform pressurization |
| G-26.02.02L |
demonstrate knowledge of regulatory requirements to perform pressurization |
identify jurisdictional regulations pertaining to pressurization |
| identify permits and approvals required to perform pressurization |
Range of Variables
- sources of information include: manufacturers’ and engineers’ specifications, drawings, operating conditions
- tools and equipment include: see Appendix B
- safe work practices include: system re‑energizing, LOTO procedures followed, safe handling of system medium
- procedures to perform pressurization include: filling, venting, increasing pressure in a controlled manner
- jurisdictional regulations include: by-laws, standards, codes, OH&S, ASME
G-26.03 - Inspects system
G-26.03 - Inspects system
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| G-26.03.01P |
perform visual inspection of system |
visual inspection of system is performed, faulty conditions are identified, reported and documented |
| G-26.03.02P |
detect defects in system |
defects are identified, reported and documented |
| G-26.03.03P |
analyze defect |
defect is analyzed and repairs required are identified, reported and documented |
Range of Variables
- faulty conditions include: leaks, freezing temperatures, overheating, improper pressure
- defects include: faulty gaskets, loose packing nuts, missing or loose plugs, faulty valves
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| G-26.03.01L |
demonstrate knowledge of system inspection and its associated procedures |
identify piping and equipment in system being inspected |
| describe faulty conditions and defects in system |
| identify sources of information pertaining to system inspection |
| identify tools and equipment relating to system inspection, and describe their applications and procedures for use |
| identify hazards, and describe safe work practices pertaining to system inspection |
Range of Variables
- faulty conditions include: leaks, freezing temperatures, overheating, improper pressure
- defects include: faulty gaskets, loose packing nuts, missing or loose plugs, faulty valves
- sources of information include: manufacturers’ and engineers’ specifications, drawings, operating conditions
- tools and equipment include: see Appendix B
- safe work practices include: use of PPE (respirator, face shield), barricading, OH&S, company policies
G-26.04 - Corrects faulty conditions
G-26.04 - Corrects faulty conditions
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| G-26.04.01P |
select and use tools and equipment |
tools and equipment are selected and used according to job |
| G-26.04.02P |
perform LOTO procedures prior to de-pressurizing |
LOTO procedures are performed on system or equipment being worked on prior to de-pressurizing according to company policies and procedures, and removal is documented |
| G-26.04.03P |
depressurize system |
system is depressurized, vents and drains are opened and pressure instruments read zero |
| G-26.04.04P |
repair leaks |
leaks are repaired using procedures |
| G-26.04.05P |
remove and replace faulty components |
faulty components are removed, replaced and function according to engineers’ specifications |
| G-26.04.06P |
repair faulty joints |
faulty joints are repaired |
| G-26.04.07P |
complete documentation |
documentation of repairs performed is completed |
Range of Variables
- tools and equipment include: see Appendix B
- procedures include: tightening and torquing flanges, cutting in unions, replacing pipe spools, changing gaskets
- components include: valves, flanges, gaskets, fittings
- joints include: welded, mechanical, fused, threaded
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| G-26.04.01L |
demonstrate knowledge of repair and replacement procedures |
identify piping and equipment in system being repaired |
| identify sources of information pertaining to repair |
| identify tools and equipment relating to repair and replacement, and describe their applications and procedures for use |
| identify hazards, and describe safe work practices pertaining to repair |
| describe procedures to perform repairs or replacements |
Range of Variables
- sources of information include: manufacturers’ and engineers’ specifications, drawings, operating conditions
- tools and equipment include: see Appendix B
- safe work practices include: acquiring permits, applying LOTO procedures, using PPE, OH&S, company policies
G-26.05 - Participates in start-up and turnover procedures
G-26.05 - Participates in start-up and turnover procedures
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Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| G-26.05.01P |
select and use tools and equipment |
tools and equipment are selected and used according to job and safe work practices |
| G-26.05.02P |
follow start-up procedure list |
start-up procedure list is followed and equipment operates according to design and functional performance requirements |
| G-26.05.03P |
check equipment and trim function, and safety features |
equipment and trim function, and safety features are performing according to manufacturers’ specifications |
| G-26.05.04P |
demonstrate system operation with owner’s representative |
system operation is demonstrated, and documentation is completed and signed off by owner’s representative |
| G-26.05.05P |
balance system |
system is balanced by adjusting components according to operational requirements |
| G-26.05.06P |
perform final maintenance of components at start-up |
components are maintained according to manufacturers’ and engineers’ specifications, for optimal operation of equipment |
| G-26.05.07P |
remove commissioning equipment |
commissioning equipment is removed without damage, leakage or spillage |
| G-26.05.08P |
remove commissioning signage and barricades |
commissioning signage and barricades are removed once commissioning is completed |
| G-26.05.09P |
place and review valve identification tags |
valve tag list is completed and tags hung on valves at correct locations |
| G-26.05.10P |
apply pipe markings to identify flow and medium |
pipe markings indicate flow and medium |
| G-26.05.11P |
complete turnover documentation |
turnover documentation is completed according to contractual agreement |
Range of Variables
- tools and equipment include: balancing equipment, laptops, radios, analyzers
- components include: flow control devices, pressure reducing valves, regulators, flow switches, level switches
- maintenance includes: cleaning strainers, changing filters
- commissioning equipment includes: balancing instruments, analyzers
- turnover documentation includes: as-builts, weld mapping, non-destructive testing (NDT), NDE, testing records, sign-off sheets, mill test reports (MTR), CRN, valve mapping
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| G-26.05.01L |
demonstrate knowledge of start-up and turnover procedures |
identify sources of information pertaining to start-up |
| identify piping and equipment in system being started up |
| identify tools and equipment relating to start-up, and describe their applications and procedures for use |
| identify hazards, and describe safe work practices pertaining to start-up |
| describe start-up procedures |
| describe turnover documentation |
Range of Variables
- sources of information include: manufacturers’ and engineers’ specifications, drawings, operating conditions
- tools and equipment include: balancing equipment, laptops, radios, analyzers
- safe work practices include: acquiring permits, applying LOTO procedures, using PPE, OH&S, company policies
- start-up procedures include: organizing inspection date, notifying client, checking connections, verifying parameters, performing operational tests, making final adjustments
- turnover documentation includes: as-builts, weld mapping, NDT, NDE, testing records, sign-off sheets, MTR, CRN, valve mapping