Page 693 - The City and Guilds Textbook: Plumbing Book 1 for the Level 3 Apprenticeship (9189), Level 2 Technical Certificate (8202) and Level 2 Diploma (6035)
P. 693
Index
see also hazardous substances wall plugs 132–3 supply 245–50, 329
trade supervisor 202–3 walls, cutting chases in 123–4 unwholesome 246–7
transducers 277 warm air systems 471, 491, 505 see also cold water systems
traps 575–83 warning safety sign 19 Water Act 2003 245–6, 255
trenches 72–4 washbasins 327, 407, 408–9, 419, water hammer 315
trunk mains 256 565–8 Water Industry Act 1991 242,
trunking 654 installation 602–3 245–6
TT system 648 washers water inspector 205
tubular scaffolds 69–71 faulty 329 Water Supply (Water Fittings)
tundish arrangements 400–1 see also taps Regulations 1999 12,
turbidity 249 waste arrangements 98, 242, 246, 254–5,
type A compression fittings 99– baths 570–4 259, 288–9, 310, 325,
100, 112 shower trays 572 347–51, 395, 595
type B compression fittings 100 washbasins 566–8 water undertaker’s notification
unconsciousness 39–40 waste disposal units 577–8 609–10
underfloor central heating systems waste pipes 116–17 watt 166
491–502 waste traps 575–83 WCs 560–5
unions 108 water blockages 617
unplasticised polyvinyl chloride adhesion and cohesion 161 connecting to cold water system
(PVCu) 113, 152 aeration of 447 327
unsintered polytetraflourethylene black 248 installation 603–4
(PTFE tape) 108 boiling points 159–60, 168 macerators 576
unvented hot water storage systems capillary attraction 161 weather compensation controls
372–80, 387 categories 242–5, 290 486
unwholesome water 246–7 changing states of 167–8 Weil’s disease 614
upland surface water 240 conditioners 321–2 welding 54–8
urinals 574–6 density 160 wells 240
UV (ultra violet) degradation 158 distribution 253, 256 wetting 23
valves filters 322–3 wheel and axle 179
drain-off 313 filtration 250–2 wheel head valves 472
float operated 314–15 freezing point 160 whirlpool baths 571–2
isolation 311–13 grey 246–7, 290, 617–19 whiteheart fittings 108
shower mixer 318–20 leakage 425 wiring
vaporisation 167 main 257–9 in electrical systems 653–4
vapourising burners 463–4 meter 259 a plug 658
variation order 225–6 pH value 160–1 Work at Height Regulations 2005
variations in work 225–6 potable 152, 242, 258 7–8
velocity 173 pressure 175, 379, 393–5 work programme 207, 221–2
ventilated branch discharge system properties of 159–61 working at height 7–8, 60–71,
554–5, 557–8 rainwater cycle 236–8 533–4
venturi boost mixing valves 319 scaling 321 working drawings 206–7
verbal communication 213–14 sedimentation 249 wrenches 81
visual impairment 212 softeners 322–3 written communication 208–9, 212
vitreous china 153 sources of 240–1 zinc 151
voltage 183, 185–6 specific heat capacity 171–2 zinc chloride 23
colour coding 45 steam 160 zoning central heating systems 445,
volume, gases 164 sterilisation 252 496–8
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