Plumbing

Roy Treloar has been involved with the mechanical service industry since leaving school in 1973, becoming a full time lecturer, teaching plumbing in 1985. He is currently the curriculum development manager for the Professional Training Centre at Colchester Institute where he is responsible for various plumbing, heating, gas and electrical training and assessment programmes. Roy is author of several books, including two other highly successful textbooks published by Wiley-Blackwell, the Plumbing Encyclopaedia and Gas Installation Technology.

Introduction x List of Abbreviations xi Acknowledgements xii A Qualification in Plumbing xiii Workplace Evidence for NVQ Achievement xiv Part 1 Key Principles, Safety and Common Plumbing Processes 1 The Plumbing Industry 2 Customer Relations and Communication Skills 4 Functional Skills 6 Employment Rights and Responsibilities 8 Effective Working Relationships 10 Health and Safety Legislation 12 Safe Working Practices 14 Personal Protective Equipment 16 Safety Signs 18 Control of Substances Hazardous to Health 20 Access Equipment and Working at Heights 22 Safe Working with Hand Tools and Machinery 24 Fire Safety 26 Regulations Governing Plumbing Work 28 Identification of Pipework 30 The International Metric System 32 Areas, Volumes and Capacities 34 Mass, Weight, Force, Pressure and Density 36 Water Pressure 38 Physical Properties of Materials 40 Heat and its Effects 42 Corrosion 44 Plumbers' Tool Kit 46 Specialist Hand Tools for Pipework 48 Specialist Hand Tools for Sheetwork 50 Plastic Pipe and Fittings 52 Low Carbon Steel Pipe and Fittings 54 Copper Pipe and Fittings 56 Low Carbon Steel Pipe Bending 58 Copper Pipe Bending 60 Pipe Bending Using Heat 62 Soldering 64 Welding Equipment and Safety 66 Welding Processes 68 Bronze Welding 70 Lead Welding (Lead Burning) 72 In-Line Valves 74 Terminal Valves 76 Float-operated Valves 78 Part 2 Hot and Cold Water Supplies 81 Classification of Water 82 Cold Water to the Consumer 84 Backflow Prevention 86 Assessing Water Efficiency in New Dwellings 88 Cold Water Systems 90 Cold Water Storage 92 Water Treatment 94 Boosted Water Supplies 96 Fire-fighting Systems 98 Domestic Sprinkler Systems 100 Hot Water Systems (Design Considerations) 102 Direct Hot Water Supply (Centralised) 104 Indirect Hot Water Supply 106 Unvented Domestic Hot Water Supply 108 Hot Distribution Pipework 110 Heat Recovery Period 112 Instantaneous Domestic Hot Water Supplies (Centralised) 114 Localised Hot Water Heaters 116 Connections to Hot and Cold Pipework 118 Installation of Pipework 1 120 Installation of Pipework 2 122 Sizing of Hot and Cold Pipework 124 Noise Transmission in Pipework 128 Commissioning of Hot and Cold Supplies 130 Disinfection of Hot and Cold Water Systems 132 Maintenance and Servicing Schedule 134 Part 3 Central Heating 137 Domestic Central Heating 138 Wet Central Heating Systems 140 Central Heating Components 1 142 Central Heating Components 2 144 Heating Controls 146 Fully Pumped System 148 Sealed (Closed) Systems 150 Boilers 152 Combination Boiler (Combi) 154 High Efficiency or Condensing Boiler 156 Domestic Heating and the Building Regulations 158 Domestic Boilers Requirements 160 Central Heating System Protection 162 Advanced Central Heating Control 164 Radiator and Boiler Sizing 166 Whole House Boiler Sizing Method 170 Pipe and Pump Sizing 172 Radiant Heating 176 Underfloor Central Heating Sizing 178 Warm Air Heating 180 Commissioning of Wet Central Heating Systems 182 Part 4 Gas Supplies 185 Properties and Combustion of Natural Gas 186 The Law Relating to Gas Installation Work 188 Gas Supply to the Consumer 190 Sizing of Domestic Gas Pipework 192 Domestic Tightness Testing and Purging 196 Pressure and Flow 198 Gas Controls 1 200 Gas Controls 2 202 Flame Supervision Devices (Flame Failure Devices) 204 Open Flued Appliances (Conventional Flue) 206 Terminal Location for Open Flues 208 Materials and Construction of Open Flues 210 Installation of Gas Fires 212 Installation of Gas Cookers 214 Room Sealed Appliances 1 (Balanced Flue) 216 Room Sealed Appliances 2 218