Page 683 - The City and Guilds Textbook: Plumbing Book 1 for the Level 3 Apprenticeship (9189), Level 2 Technical Certificate (8202) and Level 2 Diploma (6035)

Index

20 thread copper tube 328 asbestos 21 blowtorches 57
acceleration 173 disposal 26 boiler cycling 440
access equipment 60–71 removal 26 boiler interlock 444, 489
see also working at height working with 9, 24–6 boiler jigs 327
accidents atmospheric pressure 176 boiler management systems (BMS)
definition 16 atoms 184–5 487–8
first aid 33–42 authority, limits of 210, 219 boilers
major injuries 38–42 automatic air valves 473 batch feed 456
minor injuries 35–8 automatic bypass valves 473–4 cast iron heat exchangers 458
preventing 16–20 backflow 248, 290–309, 419 gravity feed 456
recording 42–3 air gaps 293–301 see also central heating systems;
reporting 6, 42–3 back pressure 294 hot water systems
accumulator 274–5, 327 back siphonage 294–5, 301–2 boiling points 159–60, 168
acetylene (C H ) 21, 51 mechanical devices 302–9 and pressure relationship 393–4
2 2
acrylonitrile butadiene styrene point-of-use protection 292–3 booster sets 267–9, 327
(ABS) 113, 152 whole-site protection 291 replacing pump 340
action and reaction 182 zoned protection 291–2 boreholes 243
active flux see self-cleaning flux balancing central heating systems boss green 108
Acts of Parliament 14 473 boss white 108
actual mechanical advantage bar pressure 159–60, 164, 175 bottled gases 51–8
(AMA) 178 see also pressure see also liquid petroleum gas
adhesion of water 161 batch feed boilers 456 (LPG)
Advisory, Conciliation and Arbitration baths 327, 407, 419, 569–72 Boyle’s law 165
Service (ACAS) 216 installation 602 brass, de-zincification of 156
aeration of water 252, 447 behaviour policy 209 break cisterns 287
Aga-type cookers 456 Belfast sink 574 bricklayers 203
air, principle applications 163 benchmarking 141 British and European Standards 211
air admittance values (AAVs) 222, bending pipes BS 1010 316–17
557 90° 105 BS 1212 313
air infiltration 480–1 copper tube 91–7 BS 1566 362
air spa baths 571–2 by heat 105 BS 1710 310–11
airlocks 329, 429 hydraulic machine 105 BS 5412 317–18
alloys 151 low carbon steel pipe 105–7 BS 6465–2:1996 574
alternating current (AC) 187, 645–6 machine bending 91–5 BS 6700 256, 352
aluminium 151 off-set bends 92–3, 96, 106–7 BS 7671 46, 352
amperage 186 passover bends 93–5 BS 8000 595, 596
annealing 84 pipe gain 95 BS 8558 352
anodic corrosion 370 plastic pipe 111–12 BS EN 806 254, 255–6, 352,
anodising 159 spring bending 95–7 411–12
anti-gravity valves 474 Bernoulli’s principle 176–7, 381 BS EN 1491:2000 395
appliance testing 6, 46–9, 225 bib taps 316 BS EN 8558 254, 255–6
approved codes of practice (ACOPs) bidets 327, 408, 419, 568–9 BS EN 12056:2000 526, 533,
14–15 bi-flow mixer taps 316 550, 594–5, 596
aquifers 243 biomass fuel 627, 635–6 central heating systems 440
arbitration 216 black water 252 ear protection 30
architect 199–200 blackheart fittings 107 electrical installations 46

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