Principles of sanitation applicable to the construction of new vessels.

Date:
[1949]
Catalogue details

Licence: Public Domain Mark

Credit: Principles of sanitation applicable to the construction of new vessels. Source: Wellcome Collection.

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    air-cooling, or air-conditioning circulating water system should not be supplied directly from the potable water system unless it is a closed system with no non-potable water connections, and the water is not used for heat exchange purposes in a unit containing toxic materials. Cold potable water should not be used for cooling boiler water for testing purposes unless it is supplied to the cooler through an air gap or is discharged from the cooler through an air gap. 1.55 Services. Potable water outlets should be provided in or near passenger, officer and crew quarters, and in the engine and boiler rooms. Drinking water fountains (See Sec. 6.23, p. 27) should be installed if practicable. Drinking fountains in engine and boiler rooms should be of the self-cooling type or installed on or within 24 of an adequately in- sulated, cooled water, circulating line so as to prevent wastage of po- table water. Coolers which permit direct contact of ice with the water and coolers which consist of a cooling chamber into which a water-filled bottle is inserted in an inverted position should not be used for dispensing drink- ing water. Hot and cold potable water should be piped to the galley, pantry, and scullery. Hot and cold potable water should be piped to the hospital and other medical care spaces for hand washing and medical care purposes (but not necessarily for hydrotherapy, toilet and bedpan flushing, or body bath- ing). Only potable water should be piped to the freezer for making ice for drinking and cooking purposes. 1.56 Identification andMarking. The piping of the potable water sys- tem, including the filling line, should be suitably stenciled, painted light blue, or striped with 6-inch light blue bands at fittings, on each side of partitions, decks, and bulkheads, and at intervals not to exceed 15' in all spaces except quarters, dining rooms, salons, and like public places where the interior finish would be marred by such marking. The bodies of valves installed in that part of the potable water sys- tem which is marked should be painted light blue or the valve wheel ap- propriately labeled. In some cases, potable and non-potable water faucets may be located so that one may not be distinguishable from the other. To avoid confusion it is advisable to label the potable water outlet ‘‘POTABLE WATER”. All non-potable water faucet outlets should be labeled “UNFIT FOR DRINKING’. 1.6 DISINFECTION OF WATER TANKS AND DISTRIBUTION SYSTEM 1,61 General. The potable water storage tank and distribution system should be cleaned, disinfected, and flushed prior to being put into ser- vice. Where a water distiller is connected to the potable water tank or