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.

    31/122 page 17
    to bilges or waste pipes, and discharges to systems of lower quality and to fixtures handling sewage wastes should be protected against backflow as specified in Sec. 6.22, p. 26. Wash water may be piped into the hospital or other medical treatment space for use in hydrotherapy and for purposes other than hand washing and medical care. Wash water may be used for garbage disposal provided the delivery line is protected against backflow. (See Sec. 6.22, p. 26) Wash water should not be piped into the galley, pantry, or scullery for dishwashing. All faucets on a separate wash water system should be clearly posted with signs reading “UNFIT FOR DRINKING”. 2.4 SALT WATER BATHS Salt water service to bath tubs and showers should be independent and there should be no cross connection to either the potable water or the wash water system. The supply line should originate at a point in the salt water system where adequate flushing will occur between the time the vessel leaves polluted water and the time water will be drawn for bathing purposes. Adequate flushing can best be assured by having the supply line originate at or near the pump. A shutoff valve should be installed so that this service can be made inoperative while the vessel is in polluted water. This shutoff valveshould be installed just beyond the point of take-off from the vessel’s main salt water system and it should be labeled “KEEP CLOSED WHILE IN HARBOR’’ The principle is the same as shown for swimming pools in Fig. 13.
    digitised image 1
    digitised image 2
    digitised image 3