Major Work Activity B - Prepares and assembles tube, tubing and pipe

Table of Contents

• Task B-6 Prepares tube, tubing and pipe
  • B-6.01 Inspects tube, tubing, pipe and fittings before installation
  • B-6.02 Cuts tube, tubing and pipe
  • B-6.03 Bends tube, tubing and pipe
  • B-6.04 Prepares tube, tubing and pipe connections
• Task B-7 Joins tube, tubing and pipe
  • B-7.01 Joins copper tube, tubing and pipe
  • B-7.02 Joins plastic tube, tubing and pipe
  • B-7.03 Joins steel tube, tubing and pipe
  • B-7.04 Joins cast iron pipe
  • B-7.05 Joins specialized tube, tubing and pipe

Task B-6 Prepares tube, tubing and 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 tube, tubing and pipe for applications such as DWV, water distribution, pressure systems and other product conveyance such as chemicals and gases.

Range of Variables

• sensory inspection includes: visual, auditory, tactile (sounding cast iron pipe, checking threads, confirming groove depth)
• faults include: damage, cracks, debris

Range of Variables

• accessories include: supports, hangers, sleeves
• types of tube, tubing and pipe include: steel, copper, plastic, cast iron, asbestos cement
• systems of measurement include: dimension, length, wall thickness
• calculations include: fitting allowances, centre-to-centre, end-to-end, offsets
• hazards include: weight, cuts, pinch points
• sensory inspection includes: visual, auditory, tactile (sounding cast iron pipe, checking threads, confirming groove depth)

Range of Variables

• tools and equipment include: pipe and tubing cutters, saws, reamers, grinders, measuring tapes, cutting guides (contour wraparounds)
• sensory inspection includes: visual, auditory, tactile (sounding cast iron pipe, checking threads, confirming groove depth)

Range of Variables

• systems of measurement include: dimension, length, wall thickness
• tools and equipment include: pipe and tubing cutters, saws, reamers, grinders, measuring tapes, cutting guides (contour wraparounds)
• hazards include: weight, cuts, pinch points, burns, flying debris
• calculations include: fitting allowances, centre-to-centre, end-to-end, offsets

Range of Variables

• bender includes: pneumatic, hydraulic, manual, electric
• distortions include: kinks, ripples

Range of Variables

• types of tube, tubing and pipe include: soft, semi-soft (partially annealed), rigid
• hazards include: weight, cuts, pinch points, strains
• bender includes: pneumatic, hydraulic, manual, electric

Range of Variables

• tools and equipment include: threading tools, grooving tools, bevelling tools, cutting tools
• clean includes: deburred, sanded, degreased
• sensory inspection includes: visual, auditory, tactile (sounding cast iron pipe, checking threads, confirming groove depth)
• faults include: damage, cracks, debris

Range of Variables

• accessoriesinclude: lubricants, sealants, cleaners, primers
• systems of measurement include: dimension, length, wall thickness
• tools and equipment include: threading tools, grooving tools, bevelling tools, cutting tools
• hazards include: weight, cuts, pinch points, strains
• clean includes: deburred, sanded, degreased
• techniques include: reaming, bevelling, filing, grinding, cleaning, sanding, priming, flaring, grooving, threading
• faults include: damage, cracks, debris

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 fibreglass.

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, air lines and low-pressure steam lines.

Plastic provides an alternative to other types of pipe.

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 materials. Small bore glass pipe is commonly used for such items as sight glasses.

Range of Variables

• methods to join 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

Range of Variables

• accessoriesinclude: lubricants, sealants, cleaners, primers
• pipe and tubing accessories include: supports, expansion joints, hangers, sleeves
• adaptors include: dielectric unions, brass, insulated unions
• tools and equipment include: pipe and tubing cutters, flaring tools, grooving tools, soldering and brazing equipment, swaging tools, press-fit
• hazards include: fire, cuts, burns
• methods to join include: press-fit, soldered, brazed, grooved, flanged, flared, compression, swaged, corporation, push-fit

Range of Variables

• methods to join include: heat fusion welding, threading, tapping, solvent welding, compression fittings, mechanical joints, gasket, flanged, crimped, expansion, grooved, push-fit
• tools and equipment include: crimping tools, expanders, heat plates and timer, cutters, hot-air tools, threading machines, chamfer tools, reaming tools, groovers, torque ratchets, electrofusion machines
• plastic welding techniques include: hot air welding, socket fusion, butt fusion

Range of Variables

• types of plastic tube, tubing and pipe include: PVC, chlorinated polyvinyl chloride (CPVC), acrylonitrile butadiene styrene (ABS), high-density polyethylene (HDPE), PEX, PEX-Aluminum-PEX (PEX-AL-PEX), Polyethylene (PE)
• accessories include: supports, expansion joints, hangers, sleeves
• adaptors include: male, female, mechanical joints
• types of joints 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, groovers, torque ratchets, electrofusion machines
• hazards include: pinch points, burning, chemicals, cuts, strains, confined spaces, fume inhalation
• methods to join include: heat fusion welding, threading, tapping, solvent welding, compression fittings, mechanical joints, gasket, flanged, crimped, expansion, grooved, push-fit

Range of Variables

• joints include: welded, threaded, flanged, grooved, press-fit, mechanical
• tools and equipment include: hand and power tools, grinders, threaders, press-fit tools, cutters, groovers, oxy-acetylene equipment

Range of Variables

• accessories include: supports, hangers, sleeves
• types of steel tube, tubing and pipeinclude: carbon steel, galvanized, stainless steel
• tools and equipment include: hand and power tools, grinders, threaders, press-fit tools, cutters, groovers, oxy-acetylene equipment
• hazards include: pinch points, burns, fire, cuts, electrical shock, strains, dangerous projectiles
• joints include: welded, threaded, flanged, grooved, press-fit, mechanical

Range of Variables

• joints include: mechanical joint clamps, oakum and cold caulking compound, gasket joints
• tools and equipment include: hand and power tools, snap cutters, come‑alongs
• mechanical restraints include: riser clamps, thrust blocks, rodding

Range of Variables

• types of cast iron piping include: soil, duriron, ductile iron
• accessories include: supports, hangers, sleeves, flanges, mechanical restraints
• tools and equipment include: hand and power tools, snap cutters, come‑alongs
• hazards include: biohazards, lead (in old piping systems), pinch points, strains
• joints include: mechanical joint clamps, oakum and cold caulking compound, gasket joints

Range of Variables

• joints include: compression joints, mechanical joint clamps, welded, threaded, flanged, grooved, press-fit, heat fusion welding, solvent welding, gasket, crimped and expansion, push-fit, transition, brazing, soldering, flaring, swaged, corporation, wrapped

Range of Variables

• accessories include: supports, hangers, sleeves
• types of specialized tube, tubing and pipe include: glass, asbestos cement, lead, concrete, historical piping, fibreglass
• hazards include: asbestos, lead, slivers, burns, cuts, strains
• joints include: compression joints, mechanical joint clamps, welded, threaded, flanged, grooved, press-fit, heat fusion welding, solvent welding, gasket, crimped and expansion, push-fit, transition, brazing, soldering, flaring, swaged, corporation, wrapped

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