4
7.2 Connections for other services .................................................................................................................... 44
7.3 Housing of equipment for water supplies .................................................................................................. 45
7.4 Test facility devices ........................................................................................................................................ 45
7.5 Pressure/flow tests on water supplies ......................................................................................................... 45
7.6 Water supply pressure test ........................................................................................................................... 45
7.7 Water contamination protection ................................................................................................................. 46
8 Choice of water supply ................................................................................................................................ 46
8.1 General .......................................................................................................................................................... 46
8.2 Town mains ................................................................................................................................................... 47
8.3 Water storage tanks ..................................................................................................................................... 47
8.4 Inexhaustible sources .................................................................................................................................... 52
8.5 Pressure tanks................................................................................................................................................ 54
8.6 Type of water supply .................................................................................................................................... 56
8.7 Isolation of water supplies ........................................................................................................................... 57
9 Pumps ............................................................................................................................................................ 58
9.1 General .......................................................................................................................................................... 58
9.2 Multiple pump arrangements ...................................................................................................................... 58
9.3 Compartments for pumpsets ....................................................................................................................... 58
9.4
Maximum
temperature
of
water
supply
...................................................................................................... 59
9.5 Valves and accessories .................................................................................................................................. 59
9.6 Suction conditions ........................................................................................................................................ 59
9.7
Performance
characteristics
.......................................................................................................................... 63
9.8 Electrically driven pumpsets ......................................................................................................................... 65
9.9 Diesel engine driven pumps ......................................................................................................................... 67
10 Installation type and size .............................................................................................................................. 72
10.1 Wet pipe installations ................................................................................................................................... 72
10.2 Dry pipe installations .................................................................................................................................... 72