P-5010 Chapter 6 Water Supply Afloat Flashcards
What command is responsible for the design, construction and maintenance of shipboard potable water systems?
Naval Sea Systems Command (NAVSEASYSCOM)
What command is responsible for promulgating instructions for ship-to-shore potable water connections and for providing potable water form approved sources when a ship is berthed at a naval facility?
Navy Facilities Engineering Command (NAVFACENGCOM)
Who is responsible for the chloride and hydrogen ion (pH) testing of the ship’s potable water?
Engineering Officer
What type of water tends to be mineral free and can be highly corrosive to metal piping and storage pipes?
Distilled water
If unusual conditions require drastic restriction in the use of potable water, the allowances should not be less than how many gallons per man per day?
2 gallons
How many gallons of potable water are specified per day per man by NAVSEA for design considerations?
50 gallons
Shipboard potable risers shall be at least how many inches above deck?
18” and turned down
What is the maximum temperature setting for hot water heaters serving showers and lavatories?
120 degrees
Sealants and lubricants used for potable water piping must be certified to what standard?
NSF/ANSI Standard 61
What color is used for potable water sounding tube caps?
Dark blue
Potable water hoses must be labeled “POTABLE WATER ONLY” in 1-inch letters approximately every ______ feet
10
What are the two Halogens approved to disinfect shipboard water?
Chlorine and Bromine
What is the abbreviation for calcium hypochlorite?
HTH
How many feet away must locker that store HTH be from any heat source that could exceed 140 degrees?
5 feet
What is the maximum number of 6-oz bottles of HTH that can be stored in a locker or bin?
48
What is the shelf life of Bromine cartridges?
2 years
What should the FAC of water received from an unapproved source of doubtful quality be?
2.0ppm after 30 minute contact time
How often must all emergency potable water containers be drained, flushed and refilled?
quarterly
What level of FAC should be reached in potable water tanks for ships who cannot identify the source of a bad water taste or odor?
5.0ppm
What term describes any connection between two separate piping systems, one containing potable water and the other contains water of unknown or questionable quality?
Cross-Connection
What is the most common type of backflow or back-siphonage prevention device?
Vacuum Breaker
What percentage of ice machines require weekly bacteriological testing?
25 percent
When pH levels begin to rise to what level, will the disinfectant properties of chlorine and bromine be affected?
8.5 and above
What department is responsible for salinity testing of ship produced water?
Engineering
How often is halogen residuals of potable water tested by the MDR?
Daily
How often must bacteriological testing of potable water be conducted by the MDR?
Weekly
