Major Work Activity B – Prepares And Assembles Pipe
Task B-6 Prepares pipe
Task Descriptor
Plumbers prepare tube, tubing and pipe for proper installation and trouble‑free operation of the plumbing system. Preparation of tube, tubing and pipe includes many different techniques such as inspection, measuring, cutting, reaming, threading grooving and bending. Pipe and tube are measured by nominal inside diameter (ID) and type, while some types of tubing are measured by outside diameter (OD) and wall thickness. Plumbers are responsible for the preparation of pipe for applications such as DWV, water distribution, pressure systems and other product conveyance such as chemicals.
B-6.01 Inspects tube, tubing, pipe and fittings before installation
Essential Skills
Document Use, Thinking, Numeracy
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Performance Criteria |
Evidence of Attainment |
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B-6.01.01P |
perform sensory inspection |
sensory inspection is performed to detect faults |
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B-6.01.02P |
confirm certification |
required certifications are confirmed to meet codes, AHJ, specifications and site requirements and approval markings are recorded |
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B-6.01.03P |
perform manual test |
manual test is performed |
Range of Variables
faults include: damage, cracks, debris
manual test includes: sounding cast iron pipe, checking threads, confirming groove depth
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Knowledge |
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Learning Outcomes |
Learning Objectives |
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B-6.01.01L |
demonstrate knowledge of tube, tubing, piping, fittings and accessories |
define terminology associated with tube, tubing, piping, fittings and accessories |
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identify hazards and describe safe work practices pertaining to tube, tubing, piping, fittings and accessories |
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interpret codes and regulations pertaining to tube, tubing, piping, fittings and accessories |
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interpret information pertaining to tube, tubing, piping, fittings and accessories found on drawings and specifications |
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describe the identification systems and methods for tube, tubing, piping, fittings and accessories |
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identify tools and equipment relating to tube, tubing, piping, fittings and accessories and describe their applications and procedures for use |
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identify types of, tube, tubing and piping and describe their properties and characteristics |
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identify fittings used with tube, tubing and piping and describe their purpose and applications |
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identify tube, tubing and piping accessories and describe their purpose and applications |
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B-6.01.02L |
demonstrate knowledge of the procedures used to measure tube, tubing and piping, and fitting allowance |
explain the systems of measurement for tube, tubing and piping, and fitting allowance |
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describe the procedures used to measure tube, tubing and piping |
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perform calculations to determine tube, tubing and piping measurements |
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describe the procedures used to inspect tube, tubing and piping |
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Range of Variables
types of tube, tubing and piping include: steel, copper, plastic, cast iron, asbestos cement
tube, tubing and piping accessories include: supports, hangers, sleeves
systems of measurement include: dimension, length, wall thickness/schedule
calculations include: fitting allowances, center-to-center, end-to-end, offsets
B-6.02 Cuts tube, tubing and pipe
Essential Skills
Numeracy, Thinking, Working with Others
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Performance Criteria |
Evidence of Attainment |
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B-6.02.01P |
select and use tools and equipment |
tools and equipment are selected and used according to applications |
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B-6.02.02P |
select tube, tubing and pipe |
tube, tubing and pipe are selected according to NPC, AHJ, specifications and site requirements |
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B-6.02.03P |
inspect tube, tubing and pipe for damage |
tube, tubing and pipe are inspected for damage after each cut using visual and audio techniques |
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B-6.02.04P |
measure tube, tubing and pipe |
tube, tubing and pipe are measured to determine length and location of cut |
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B-6.02.05P |
use cutting guides |
cutting guides are used to make a straight cut |
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B-6.02.06P |
support and secure tube, tubing and pipe |
tube, tubing and pipe are supported and secured for cutting |
Range of Variables
tools and equipment include: pipe and tubing cutters, saws, reamers, grinders
audio techniques include: sounding cast iron pipe
guides are contour wraparounds
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Knowledge |
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Learning Outcomes |
Learning Objectives |
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B-6.02.01L |
demonstrate knowledge of tube, tubing, piping, fittings and accessories |
define terminology associated with tube, tubing and piping |
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identify hazards and describe safe work practices pertaining to tube, tubing and piping |
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interpret codes and regulations pertaining to tube, tubing and piping |
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identify tools and equipment relating to cutting tube, tubing and piping and their procedures for use |
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B-6.02.02L |
demonstrate knowledge of the procedures used to measure and cut tube, tubing and pipe |
explain the systems of measurement for tube, tubing and pipe |
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describe the procedures used to measure tube, tubing and pipe |
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perform calculations to determine tube, tubing and pipe measurements |
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describe the procedures used to inspect tube, tubing and pipe |
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describe the process used to cut tube, tubing and pipe |
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Range of Variables
systems of measurement include: dimension, length, wall thickness/schedule, grades
tube, tubing and pipe measurements include: fitting allowances, center-to-center, end-to-end, offsets
B-6.03 Bends tube, tubing and pipe
Essential Skills
Thinking, Document Use, Numeracy
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Performance Criteria |
Evidence of Attainment |
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B-6.03.01P |
identify types of tube, tubing and pipe |
tube, tubing and pipe are identified according to NPC, AHJ, specifications and site requirements |
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B-6.03.02P |
select and use tube, tubing and pipe bender |
tube, tubing and pipe bender is selected according to type and size |
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B-6.03.03P |
determine location and angle of required offsets or bends |
location and angle of required offsets or bends are determined according to site requirements |
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B-6.03.04P |
measure and calculate distances |
distances between offsets and bends are measured and calculated |
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B-6.03.05P |
determine increments on bending tool |
increments on bending tools are determined to achieve required angle |
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B-6.03.06P |
inspect tube, tubing and pipe |
tube, tubing and pipe are inspected after bending for distortions |
Range of Variables
tube, tubing and pipe include: soft, semi-soft (partially annealed), rigid
distortions include: kinks, ripples
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Knowledge |
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Learning Outcomes |
Learning Objectives |
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B-6.03.01L |
demonstrate knowledge of tube, tubing and pipe |
define terminology associated with tube, tubing and piping |
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identify tools and equipment used to bend tube, tubing and pipe |
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identify hazards and describe safe work practices pertaining to bending tube, tubing and piping |
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interpret codes and regulations pertaining to bending tube, tubing and piping |
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interpret information pertaining to bending tube, tubing and piping found on drawings and specifications |
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B-6.03.02L |
demonstrate knowledge of the procedures used to bend tube, tubing and pipe |
describe the procedures used to bend tube, tubing and pipe |
Range of Variables
tools and equipment include: pneumatic, hydraulic, manual benders
B-6.04 Prepares tube, tubing and pipe connections
Essential Skills
Thinking, Document Use, Numeracy
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Performance Criteria |
Evidence of Attainment |
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B-6.04.01P |
select and use tools and equipment |
tools and equipment are selected and used according to application and material |
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B-6.04.02P |
ream and thread pipe |
pipe is reamed and threaded according to pipe specifications and standards |
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B-6.04.03P |
flare tube, tubing and pipe |
tube, tubing and pipe is flared according to specifications and application |
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B-6.04.04P |
sand and clean tube, tubing and pipe |
tube, tubing and pipe is sanded and cleaned according to code requirements and specifications |
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B-6.04.05P |
bevel pipe |
pipe is beveled according to pipe specifications and application |
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B-6.04.06P |
bevel or groove pipe |
pipe is grooved or bevelled according to pipe specification and application |
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B-6.04.07P |
inspect tube, tubing and pipe for damage |
tube, tubing and pipe are inspected for damage prior to connection |
Range of Variables
tools and equipment include: threading, grooving, bevelling, cutting tools
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Knowledge |
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Learning Outcomes |
Learning Objectives |
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B-6.04.01L |
demonstrate knowledge of tube, tubing, piping, fittings and accessories |
define terminology associated with tube, tubing, piping, fittings and accessories |
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identify hazards and describe safe work practices pertaining to preparing pipe connections |
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interpret codes, standards and regulations pertaining to preparing pipe connections |
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interpret information pertaining to tube, tubing and piping connections found in specifications |
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describe the identification systems and methods for tube, tubing and piping connections |
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identify tools and equipment relating to tube, tubing and piping connections and describe their applications and procedures for use |
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identify fittings used to prepare tube, tubing and piping connections and describe their purpose and applications |
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B-6.04.02L |
demonstrate knowledge of the techniques for preparing tube, tubing and pipe connections |
identify techniques for preparing tube, tubing and pipe connections and describe the applications and procedure for use |
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B-6.04.03L |
demonstrate knowledge of the procedures used to measure tube, tubing and pipe |
explain the systems of measurement for tube, tubing and pipe |
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describe the procedures used to measure tube, tubing and pipe connections |
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perform calculations to determine tube, tubing and pipe connections |
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describe the procedures used to inspect tube, tubing and pipe connections |
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Range of Variables
accessories include: lubricants, sealants, cleaners, primers
tools and equipment include: threading, grooving, bevelling, cutting tools
techniques include: reaming, bevelling, filing, grinding, cleaning, sanding, priming, flaring, grooving
systems of measurement include: dimension, length, wall thickness/schedule, grades
Task B-7 Joins tube, tubing and pipe
Task Descriptor
Plumbers join tube, tubing and pipe to ensure trouble-free operation of systems. They use materials such as copper, plastic, steel, cast iron as well as specialized materials such as glass and stainless.
Copper may be used for potable water systems, DWV and specialized systems.
Steel is one of the most widely used piping materials installed by plumbers in heating and process applications. Some examples of systems using steel pipe are hydronic heating, fuel piping and food processing.
Plastic provides an alternative to other types of pipe. Fibreglass is also included in this task.
Cast iron has proven qualities that continue to make it a reliable material for drainage of sanitary and storm waste. Ductile iron is widely used for water service and process piping.
Glass is commonly used in laboratories, hospitals and chemical plants for corrosive waste. Small bore glass pipe is commonly used for such items as sight glasses.
B-7.01 Joins copper tube, tubing and pipe
Essential Skills
Reading, Thinking, Document Use
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Performance Criteria |
Evidence of Attainment |
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B-7.01.01P |
determine types of fittings and joining methods and appropriate materials to be used |
types of fittings, joining methods and appropriate materials are determined according to NPC, AHJ, standards, specifications and site requirements |
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B-7.01.02P |
select and use tools and equipment for copper tube, tubing and pipe |
tools and equipment are selected and used according to fittings and joining methods |
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B-7.01.03P |
connect flared tube and tubing ends |
flared tube and tubing ends are connected and tightened according to specifications to ensure proper seal on fitting |
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B-7.01.04P |
connect swaged pipe ends |
swaged pipe end is connected according to specifications |
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B-7.01.05P |
connect grooved pipe ends |
grooved pipe end is connected according to specifications |
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B-7.01.06P |
clean and lubricate mechanical joints |
grooved mechanical joints are cleaned and lubricated to avoid pinching and to allow for proper tightening to specifications |
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B-7.01.07P |
select soldering and brazing materials |
soldering and brazing materials are selected according to applications |
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B-7.01.08P |
purge pipe |
brazed piping systems are purged with inert gas during brazing process to prevent oxidization of interior of pipe according to procedure |
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B-7.01.09P |
solder assembly |
adequate temperature is provided to soldered and brazed joints to achieve required flow and capillary action of filler metal |
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B-7.01.10P |
assemble and install corporation, compression or push-fit fittings |
corporation, compression or push-fit fittings are assembled and installed according to required depth and to specifications |
Range of Variables
joining methods include: press-fit, soldered, brazed, grooved, flanged, flared, compression, swaged, corporation, push-fit
tools and equipment include: pipe and tubing cutters, flaring tools, grooving tools, soldering and brazing equipment, swaging tools, press-fit
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Knowledge |
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Learning Outcomes |
Learning Objectives |
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B-7.01.01L |
demonstrate knowledge of copper tube, tubing and pipe, and associated fittings and accessories |
define terminology associated with copper tube, tubing and pipe |
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identify hazards and describe safe work practices pertaining to copper tube, tubing and pipe |
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interpret codes, regulations and standards pertaining to copper tube, tubing and pipe |
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interpret information pertaining to copper tube, tubing and pipe found on drawings and specifications |
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describe the identification systems and methods for copper tube, tubing and pipe |
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identify tools and equipment relating to copper tube, tubing and pipe and describe their applications and procedures for use |
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identify types of copper tube, tubing and pipe and describe their properties and characteristics |
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identify fittings used with copper tube, tubing and pipe and describe their purpose and applications |
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identify pipe and tubing accessories and describe their purpose and applications |
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B-7.01.02L |
demonstrate knowledge of the procedures used to join copper tube, tubing and pipe |
identify the methods used to join copper tube, tubing and pipe and describe their associated procedures |
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describe the procedures used to install fittings and accessories for copper tube, tubing and pipe |
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identify adaptors required to join dissimilar materials to prevent galvanic action |
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Range of Variables
pipe and tubing accessories include: supports, expansion joints, hangers and sleeves
methods include: press-fit, soldered, brazed, grooved, flanged, flared, compression, swaged, corporation, push-fit
adaptors are dielectric unions
B-7.02 Joins plastic pipe and tubing
Essential Skills
Reading, Thinking, Document Use
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Performance Criteria |
Evidence of Attainment |
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B-7.02.01P |
determine types of fittings and joining methods and appropriate materials to be used |
types of fittings, joining methods and appropriate materials are determined according to NPC, AHJ, standards, specifications and site requirements |
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B-7.02.02P |
select and use tools and equipment |
tools and equipment are selected and used according to applications |
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B-7.02.03P |
select solvents and primers |
solvents and primers are selected according to specifications |
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B-7.02.04P |
solvent weld plastic pipe and tubing joints |
plastic pipe and tubing joints are solvent welded according to type of pipe and specifications |
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B-7.02.05P |
groove plastic pipe |
plastic pipes are grooved to proper depth according to specifications |
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B-7.02.06P |
clean and lubricate grooved mechanical joints |
grooved mechanical joints are cleaned and lubricated as required to avoid pinching and to allow for proper tightening to specifications |
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B-7.02.07P |
connect and tighten mechanical joints |
mechanical joints are connected and tightened to required rating |
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B-7.02.08P |
perform plastic welding techniques |
plastic welding techniques are performed according to type of pipe and specifications |
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B-7.02.09P |
crimp or expand cross-linked polyethylene (PEX) pipe and tubing |
PEX pipe and tubing are crimped or expanded to create a joint according to specifications |
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B-7.02.10P |
prepare hub and spigot joints |
hub and spigot joints are prepared by chamfering pipe ends and applying lubricant on pipe and gasket according to specifications |
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B-7.02.11P |
assemble hub and spigot joints |
hub and spigot joints are assembled for pressure water and drainage systems according to specifications |
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B-7.02.12P |
assemble and install compression and push-fit fittings |
compression and push-fit fittings are assembled and installed according to required depth and to specifications |
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B-7.02.13P |
select appropriate pipe for threading |
pipe for threading is selected according to specifications |
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B-7.02.14P |
assemble components for flanged connections |
components for flanged connections are assembled according to specifications |
Range of Variables
joining methods include: welded, threaded, flanged, cut-grooved, crimped, expanded, push-fit, compression, mechanical, gasket, transition
tools and equipment include: crimping tools, expanders, heat plates and timer, cutters, hot-air tools, threading machines, chamfer tools, reaming tools, cut groovers, torque ratchets, electrofusion machines
plastic welding techniques include: solvent welding, hot-air welding, socket fusion, butt fusion
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Knowledge |
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Learning Outcomes |
Learning Objectives |
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B-7.02.01L |
demonstrate knowledge of plastic pipe and tubing, and associated fittings and accessories |
define terminology associated with plastic pipe and tubing |
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identify hazards and describe safe work practices pertaining to plastic pipe and tubing |
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interpret codes and regulations pertaining to plastic pipe and tubing |
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interpret information pertaining to plastic pipe and tubing found on drawings and specifications |
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describe the identification systems and methods for plastic pipe and tubing |
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identify tools and equipment relating to plastic pipe and tubing and describe their applications and procedures for use |
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identify plastic pipe and tubing system applications and describe their characteristics and requirements |
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identify types of plastic pipe and tubing and describe their properties and characteristics |
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identify fittings used with plastic pipe and tubing and describe their purpose and applications |
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identify plastic pipe and tubing accessories and describe their purpose and applications |
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B-7.02.02L |
demonstrate knowledge of the procedures used to join plastic pipe and tubing |
identify the methods used to join plastic pipe and tubing and describe their associated procedures |
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describe the procedures used to install fittings and accessories for plastic pipe and tubing |
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identify adaptors required for transitions |
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Range of Variables
types of plastic pipe and tubing include: PVC, chlorinated polyvinyl chloride (CPVC), acrylonitrile-Butadiene-Styrene (ABS), high-density polyethylene (HDPE), PEX, PEX-Aluminum-PEX (PEX-AL-PEX), Polyethylene (PE)
plastic pipe and tubing accessories include: supports, expansion joints, hangers, sleeves
methods include: heat fusion welding, threading, tapping, solvent welding, compression fittings and mechanical joints, gasket, flanged, crimped and expansion, cut-grooved, push-fit
adaptors include: male, female, mechanical joints
B-7.03 Joins steel pipe
Essential Skills
Reading, Thinking, Document Use
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Skills |
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Performance Criteria |
Evidence of Attainment |
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B-7.03.01P |
determine types of fittings and, joining methods and appropriate materials to be used |
types of fittings, joining methods and appropriate materials are determined according to NPC, AHJ, standards, specifications and site requirements |
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B-7.03.02P |
select and use tools and equipment |
tools and equipment are selected and used according to type of materials, fittings and joining methods |
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B-7.03.03P |
support and align pipe and fittings |
pipe and fittings are supported and aligned prior to connection |
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B-7.03.04P |
thread steel pipe |
steel pipe is threaded using lubricants as required, ensuring proper taper and length of threads |
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B-7.03.05P |
groove steel pipe |
steel pipe is grooved to proper depth according to specifications |
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B-7.03.06P |
clean and lubricate grooved mechanical joints |
grooved mechanical joints are cleaned and lubricated as required to avoid pinching and to allow for proper tightening to specifications |
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B-7.03.07P |
connect and tighten mechanical joints |
mechanical joints are connected and tightened to required specifications |
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B-7.03.08P |
fabricate gaskets |
gaskets are fabricated for flanged joints |
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B-7.03.09P |
install gaskets and tighten bolts |
gasket and bolt tightening pattern is used for flanged joints according to specifications |
Range of Variables
tools and equipment include: grinders, threaders, press-fit tools, cutters, cut-groovers and roll-groovers, wrenches
joining methods include: welded, threaded, flanged, cut-grooved, roll-grooved, press-fit, mechanical
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Knowledge |
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Learning Outcomes |
Learning Objectives |
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B-7.03.01L |
demonstrate knowledge of steel piping and associated fittings and accessories |
define terminology associated with steel piping |
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identify hazards and describe safe work practices pertaining to steel piping |
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interpret codes and regulations pertaining to steel piping |
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interpret information pertaining to steel piping found on drawings and specifications |
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describe the identification systems and methods used for steel piping |
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identify tools and equipment related to steel piping and describe their applications and procedures for use |
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identify steel piping systems and describe their characteristics and applications |
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identify types of steel piping and describe their properties and characteristics |
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identify fittings used with steel piping and describe their purpose and applications |
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identify steel piping accessories and describe their purpose and applications |
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B-7.03.02L |
demonstrate knowledge of the procedures used to join steel piping |
identify the methods used to join steel piping and describe their associated procedures |
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describe the procedures used to install fittings and accessories for steel piping |
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Range of Variables
types of steel piping include: carbon steel, galvanized, stainless steel
steel piping accessories include: supports, hangers, sleeves
methods include: threading, grooving, welding, flanged, gasket, mechanical joints
B-7.04 Joins cast iron pipe
Essential Skills
Reading, Thinking, Document Use
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Skills |
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Performance Criteria |
Evidence of Attainment |
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B-7.04.01P |
determine types of joints and fittings, method of joining and materials to be used |
types of joints and fittings, method of joining and materials are determined according to NPC, AHJ, standards, specifications and site requirements |
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B-7.04.02P |
select and use tools and equipment |
tools and equipment are selected and used according to fittings and joining methods |
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B-7.04.03P |
align pipe and fittings |
pipe and fittings are aligned and assembled using joints according to specifications |
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B-7.04.05P |
identify locations |
locations are identified where mechanical restraints are required |
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B-7.04.06P |
install mechanical restraints |
mechanical restraints are installed for cast iron pipe |
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B-7.04.07P |
torque mechanical coupling |
mechanical coupling is torqued to specifications |
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B-7.04.08P |
join hub and spigot connections |
hub and spigot connections are joined according to specifications and NPC |
Range of Variables
joints include: mechanical joint clamps, oakum and cold caulking compound, lead and oakum, gasket joints
tools and equipment include: snap cutters, nut drivers, come‑alongs, ratchets, sockets
mechanical restraints include: riser clamps, thrust blocks
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Knowledge |
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Learning Outcomes |
Learning Objectives |
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B-7.04.01L |
demonstrate knowledge of cast iron piping, and associated fittings and accessories |
define terminology associated with cast iron piping |
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identify hazards and describe safe work practices pertaining to cast iron piping |
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interpret codes and regulations pertaining to cast iron piping |
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interpret information pertaining to cast iron piping found on drawings and specifications |
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describe the identification systems and methods for cast iron piping |
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identify tools and equipment relating to cast iron piping and describe their applications and procedures for use |
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identify types of cast iron piping and describe their properties and characteristics |
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identify fittings used with cast iron piping and describe their purpose and applications |
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identify cast iron piping accessories and describe their purpose and applications |
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B-7.04.02L |
demonstrate knowledge of the procedures used to join cast iron piping |
identify the methods used to join cast iron piping and describe their associated procedures |
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describe the procedures used to install fittings and accessories for cast iron piping |
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Range of Variables
types of cast iron piping include: soil, duriron, ductile iron
cast iron piping accessories include: supports, hangers and sleeves, flanges, thrust blocks, pipe restraints
methods include: mechanical joints, hub and spigot, oakum and cold caulking compound, lead and oakum
B-7.05 Joins specialized pipe
Essential Skills
Continuous Learning, Reading, Document Use
NL |
NS |
PE |
NB |
QC |
ON |
MB |
SK |
AB |
BC |
NT |
YT |
NU |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
yes |
yes |
yes |
yes |
NV |
yes |
yes |
yes |
yes |
yes |
NV |
NV |
NV |
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Skills |
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Performance Criteria |
Evidence of Attainment |
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B-7.05.01P |
determine types of joints and fittings, method of joining and appropriate materials to be used |
types of joints and fittings, method of joining and appropriate materials are determined according to NPC, AHJ, standards, specifications and site requirements |
|
B-7.05.02P |
select and use tools and equipment required |
tools and equipment are selected and used according to fittings and joining methods |
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B-7.05.03P |
position fittings and pipe |
system fittings and pipe are selected and installed according to NPC, AHJ, standards and specifications |
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B-7.05.04P |
select and install transition fittings |
transition fittings are selected and installed to connect different materials according to NPC, AHJ, standards and specifications |
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B-7.05.05P |
align and assemble pipe and fittings |
pipe and fittings are aligned and assembled using joints according to NPC, AHJ, standards and specifications |
Range of Variables
joints include: compression joints, mechanical joint clamps, welded, threaded, flanged, cut-grooved, roll-grooved, press-fit, heat fusion welding, solvent welding, gasket, crimped and expansion, push-fit, transition, brazing, soldering, flaring, swaged, corporation
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Knowledge |
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Learning Outcomes |
Learning Objectives |
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B-7.05.01L |
demonstrate knowledge of specialized piping, fittings and accessories |
define terminology associated with specialized piping |
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identify hazards and describe safe work practices pertaining to specialized piping |
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interpret codes, standards and regulations pertaining to specialized piping |
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interpret information pertaining to specialized piping found on drawings and specifications |
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describe the identification systems and methods for specialized piping |
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identify specialized piping systems and describe their characteristics and applications |
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identify types of specialized piping and describe their properties and characteristics |
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identify fittings used with specialized piping and describe their purpose and applications |
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identify specialized piping and describe their purpose and applications |
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identify the methods used to join specialized piping and describe their associated procedures |
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describe the procedures used to install fittings and accessories for specialized piping |
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Range of Variables
types of specialized piping include: glass, asbestos-cement, lead, concrete, historical piping, fibreglass
accessories include: supports, hangers, sleeves
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