Gas Installation Technology

Understand the core competencies of gas installation with this accessible textbook

Gas operatives in the UK must be Gas Safe registered, suitably qualified and assessed as competent in the aspect of gas work that they wish to undertake. Qualification is gained by means of an industry recognised Managed Learning Programme or a gas aligned National Vocational Qualification (NVQ/SNVQ). Periodic renewal thereafter is by means of the National Accredited Certification Scheme (ACS). Gas Installation Technology is the definitive textbook for students enrolled in any of these courses. Now fully updated to reflect new standards and the most up to date best practices, it remains the indispensable reference for anyone working in the gas industry.

Readers of the third edition of Gas Installation Technology will find:

• Coverage of commercial, domestic, and LPG installations
• New or updated material on 'net zero' targets, climate change, and other aspects of the gas industry's future

• Notes and examples within each chapter to facilitate learning

  Gas Installation Technology is ideal for students in gas installation or plumbing courses, as well as for professional gas installers renewing their certification.

  Coverage of commercial, domestic, and LPG installations New or updated material on 'net zero' targets, climate change, and other aspects of the gas industry's future Notes and examples within each chapter to facilitate learning

  Autorentext

  Andrew S. Burcham is an Engineering Technician Member of The Institution of Gas Engineers. He has over 40 years of experience in the gas industry, starting as an apprentice Gas Service Engineer with British Gas in 1981. He worked for British Gas for 25 years, later becoming an assessor and trainer. In 2006, he left British Gas and worked as a self-employed heating engineer while also assessing ACS programs at colleges. Since 2014, Andrew has been the ACS Centre Manager at Colchester Institute, delivering training and assessment programs for plumbing and heating engineers. His depth of knowledge and hands-on experience make him an invaluable resource.

  Stephen J. Denney is a highly respected tutor and assessor in the gas industry, bringing over 30 years of invaluable experience. After graduating as an award-winning plumbing student in 1991, he established a successful business in mechanical services. In 2014, Stephen became a full-time lecturer and assessor and currently holds a pivotal role at Colchester Institute's Gas and Utilities Department. In this position, he oversees quality assurance and develops industry courses, equipping professionals with essential skills for success in the gas industry. His extensive practical experience, combined with his role as an assessor, enables him to provide valuable insights and real-world perspectives to professionals in the gas and utilities sector.

  Roy D. Treloar was, until his retirement, curriculum development manager for the Professional Training Centre at Colchester Institute.

  Klappentext

  Revised edition of: Gas installation technology / R.D. Treloar, 2nd ed. Chichester, West Sussex, U.K.; Ames, Iowa: Wiley-Blackwell, 2010.

  Inhalt

  Introduction xi

  Acknowledgements xiii

  1 The Gas Industry 1

  The Gas Industry 1

  Nationally Accredited Certification Scheme for Individual Gas Fitting Operatives (ACS) 4

  Required ACS Assessments and Flowcharts 9

  Legislation Affecting Gas Operatives 10

  Specific Legislation Affecting Gas Operatives 15

  Industry Documents and British Standards 17

  Gas Safety (Installation and Use) Regulations 21

  The Future of Gas 24

  2 Gas Utilisation 27

  Gas: Its Origin 27

  Characteristics and Properties of Gases 29

  Liquefied Petroleum Gas (LPG) 33

  The Combustion Process 34

  Air Requirements for Combustion 37

  Products of Combustion 39

  The Gas Flame 41

  Flame Pattern and Characteristics 44

  Atmospheric Burners 46

  Pre-mix Burners 48

  Gas Pressure and Flow 50

  Gas Pressure Readings 52

  Quick Reference Guide to Taking Pressures 54

  Estimating a Suitable Pipe Size 56

  Domestic Natural Gas Pipe Sizing 58

  Domestic LPG Pipe Sizing 62

  Commercial Natural Gas Pipe Sizing 67

  Gas Rates and Heat Input 69

  Electronic and Smart Meters 72

  Quick Reference Tables: Gas Rate/Heat Input 73

  The Physical Laws Relating to Gas 76

  Measurement of Gas 78

  3 Gas Controls 87

  Quarter Turn Gas Control Valves 87

  Screw Down Gas Control Valves 90

  Valve Application 93

  Spring-loaded Gas Control Valves 94

  Electrically Operated Gas Control Valves 96

  Heat-operated Gas Control Valves 98

  Pressure-operated Controls Valves 100

  Low- and High-pressure Cut-off Devices 102

  Pressure Regulators 105

  LPG Regulators 108

  Flame Supervision Devices 113

  Testing Flame Supervision Devices 120

  Thermostatic Control 120

  Multi-functional Gas Valve 122

  Air/Gas Ratio Valve 125

  Ignition Devices 127

  Vitiation-sensing Devices 129

  Pressure and Flow Proving Devices 132

  4 Installation Practices 135

  Polyethylene Pipe Jointing 135

  Copper Pipe Jointing 138

  Mild Steel Pipe Jointing 141

  Semi-rigid and Flexible Pipe Connections 143

  Gas Service and Installation Pipework 145

  Connections to High-rise Buildings 150

  Gas Meter Installations 153

  Commercial Gas Installations 158

  Internal Installation Pipework 160

  Pipework Laid in Floors 162

  Pipework in Walls 165

  Pipework Support and Allowance for Movement 168

  Timber-framed Dwellings 170

  LPG Supply 173

  LPG Cylinder Installation 174

  Storage and Transportation of LPG Cylinders 176

  LPG Bulk Tank Installation 178

  Gas Supplies from a Bulk Tank Installation 181

  LPG Cylinder Sizing 184

  5 Testing and Purging 187

  Testing and Purging 187

  Tightness Testing With Air (Domestic) 193

  Tightness Testing Natural Gas Installations (Domestic) 194

  Tightness Testing LPG Installations (Domestic) 199

  Purging Domestic Gas Installations 204

  Commercial Strength and Tightness Testing (TPCP1A) 209

  Commercial Strength and Tightness Testing (TPCP1) 217

  Direct Purging Commercial Pipework 230

  Indirect Purging Using Nitrogen (N2) 239

  6 Flues and Chimneys 243

  Flue/Chimney Classification 243

  Chimney/Flue Material and Specification 244

  Natural Draught Open-Flue Systems 248

  Installation of an Open-Flue Chimney 250

  Minimum Open-Flue Heights Domestic kW 252

  70 kW 254

  Open-Flue Terminal Design and Location 258

  Condensation within Open-Flue Systems 262

  Brick Chimneys 264

  Flexible Stainless Steel Flue Liners 267

  Pre-cast Flue Blocks 270

  Pipes Used for Chimneys 272

  Fan Draught Open-Flue Chimney Systems 274

  Shared Open-Flue Chimney Systems 276

  Checking and Testing Open-Flue Systems 279

  Room-Sealed Flue Chimneys 282

  Fan-Assisted Room-Sealed Flue Appliance 284

  Room-Sealed and Fan Flue Terminal Locations kW 288

  70 kW 293

  Shared Room-Sealed Flue Systems 295

  Fan Dilution System 301

  Concealed Flues 302

  7 Ventilation 305

  Need for Ventilation 305

  Ventilation Location 308

  Effective Ventilation 311

  Purge Ventilation (Rapid Ventilation) 315

  Ventilation Sizing and Tables 316

  Domestic Ventilation Tables 319

  Commercial Ventilation Tables 321

  Worked Examples for Domestic Premises 325

  Worked Examples for Commercial Premises 330

  Domestic Ventilation Ready Reckoner 334

  8 Gas Installer Responsibility 337

  Working on Gas Installations and Appliances 337

  Commissioning 339

  Servicing Gas Appliances/Installations 346

  Installation of Second-hand Appliances 348

  Landlords' Gas Safety Responsibilities 348

  Gas Industry Unsafe Situations 351

  Gas Escape Procedures 357

  Reporting of Injuries, Diseases and Dangerous Occurrences Regulations (riddor) 359

  Carbon Monoxide Detection 361

  Gas Operative's Response to an Activated CO Alarm 362

  Determining the Ambient Level of CO in a Room (CO Build-up Test) 364…