Plumbing and Pipe-Fitting

course outline

Topics

• Safety Precautions

  Apply appropriate safety precautions in movement and storage of gas welding equipment and use protective wears during welding operations.

• Application of safety precaution in specific welding scenarios

  Gas welding on empty cylinders of chemicals, inflammable or explosive liquids; gas welding on inflammable materials (e.g., petrol tanks); gas welding in confined spaces.

• Gas Welding

  Identify and describe gas welding equipment and difference between high and low pressure welding. Generate acetylene and identity various welding rods and torches. Identify welding flames and apply on prepared plate surface to run beads. Make sketches of various welding symbols and apply different techniques of joining metals. State functions and use backing bar and strips to weld.

• Gas welding equipment

  Description, functions, application, and care of generators, regulators, blow pipes, nozzles, hoses, cylinders, economizers, etc.

• Acetylene generators

  Types, parts, low and high pressure system of welding, acetylene generation with calcium carbide, welding rods and their types, types of flames, welding and cutting torches.

• Manufacture and Storage of Gasses

  Explain methods of manufacture and storage of oxygen and acetylene equipment observing necessary safety precautions.

• Assembly of Oxygen and Acetylene Equipment

  Keep equipment in correct position and assemble the gas welding components. Test for leakage and state functions of the component.

• Skills in Gas Welding

  Identify types, sizes and properties of welding rods and flames used in gas welding. Light welding torch and apply the various flames on prepared plate surfaces and joints. Assemble, tack and carry out Oxy-acetylene welding with different techniques.

• Brazing and Bronze Welding

  Differentiate between brazing/silver soldering and bronze welding and identify appropriate flames used for welding. Prepare metal edges and carry out brazing operations observing necessary safety precautions. Explain importance of brazing dissimilar metals.

• Welding Non-Ferrous Metals

  Identify non-ferrous metals and describe their composition and properties. State properties and compositions of fluxes used for welding nonferrous metal and apply appropriate flux on prepared component for welding. Identify properties and composition of stainless steels and prepare the composition for welding. Carry out welding operations using appropriate rods, techniques observing necessary safety precautions and effects of joining two different metals.

• Fuel Gas Cutting Process

  State principles with applications of fuel gas cutting process and describe types of fuel gasses use in oxy-fuel cutting, considering advantages and disadvantages of cutting operations.

• Liquefied Petroleum Gas

  Explain methods of production and storage and state types and properties of liquid petroleum gases with necessary safety precautions.

• Bunsen Flames and Domestic Gas Installation

  Explain principles of flames and the common product. Select types and functions of fittings and liquid petroleum gas and identify methods of installation. Produce platforms for cylinders and install gas pipes to appliance and test for leakage.

• Steam Generator

  Identify types, functions of steam generator and explain its working principles.

• Steam and Gas work

  Explain importance and usage of steam in industry and differentiate types of steam. State purpose, types of insulation of steam pipes and fittings and insulate appropriate steam pipes and valves.

• Installation of Steam Pipes System

  Setout pipeline to point of use and fix bracket of clips for firm support. Explain reasons for insulation and select and apply appropriate for installation with necessary tests.

• Contamination of Water

  Identify sources of impurities in water with prevention and treatment to be carried out.

• Treatment of water

  Using a base exchange water, filtering it with fine sand, using a steam cloth, boiling.

• Layout Water Supply System

  Explain principles in layout of public and domestic water supply. Select various materials used for pipe work and install with appropriate fittings, support and protections.

• Constant and Intermittent System

  Explain principles of constant and intermittent system of water supply and identify classes of pipes. Select various jointing compound suitable for materials with their method of installing public cold water supply system.

• Cold Water Supply

  Explain principles of direct and indirect water supply system and select appropriate fittings and valves required for connections.

• Taps, Valves and Cocks

  Explain principles of taps, valves and cocks operation with sketches and carry out appropriate installations. Explain need for installing and protection.

• Principles of operations

  Bib taps, globe taps, stop valves, plug cocks, pressure valves, gate valves, drain cocks, pillar taps.

• Storage Tank

  Design simple support and select appropriate materials for constructing cold water supply cistern with installation. Select suitable storage tank and reservoir.

• Faults and Defects

  Identify types, causes of noises in cold water supply systems and repairs to be taken.

• Rural Water Supply

  Explain sources of water supply and know types and principles of operating pumps. Identify pumps and explain the importance and sitting of valves used in pumps.

• Principles of operation and importance of pumps

  Jack, lift, lift and force, hydraulic ram. Types of pumps include centrifugal, semi-rotary wind mill pump, double action life and free pump.

• Safety in Hot Water Installation

  Explain main provisions of model and relevant local byelaws on hot water and state reasons for fixing safety valves. Mention dangers in storage and use of fuels and reasons for installing thermometer in water heating system.

• Hot Water Installation

  Read and interpret blue print of public and domestic hot water with support components and connect pipes to the components. Explain reasons for installation and test for safety and working system.

• Install a Domestic Hot Water Supply

  Explain types of electric and gas water heaters and their working principles. With ratings and efficiency, choose and install water heaters considering safety.

• Sanitation Appliances

  Explain principles of sanitation in buildings and identify types of sanitary fittings with sketches. Select materials and describe properties and production of waste and soil appliance. Choose appropriate sizes of sanitary appliances and pipes and know where to fix them in buildings.

• Install Sanitation Appliances

  Read and interpret drawings of sanitary installation in building plans. Carry out preparation relevant to fixing sanitary appliances and test for leakages.

• Traps

  Differentiate and describe various traps and their uses with sketches. Explain functions of water seals in traps and state causes of unsealing and fix to sanitary system and tests for efficiency.

• Waste and Soil Pipes

  Select types of soil waste appliances and explain principles and arrangement of soil waste pipes above ground. State materials used and install with necessary testing of soil and waste pipes above ground level.

• Drainage

  Identify types and basic principles of drainage considering building regulations installation. State materials used for drainage system and determine sizes of drain pipes with appropriate drawings and sketches.

• Septic Tank and Soak-Away

  With sketches, explain the purpose and principles of septic tank and soak-away pit. Consider appropriate types and sizes of tank and soak-away and carry out necessary connections.

• Cess Pool Drainage System

  State purpose of a cess pool and explain principles of its construction. Consider requirements for a cess pool location and draw to scale a standard cess pool for domestic dwellings.