Chapter 9 Preventive Medicine For Ground Forces

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P-5010 Chapter 9

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Preventive MedicineFor Ground Forces

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The primary mission of preventive medicine (PREVMED) personnel including unit Medical
Officers (MO), Senior Medical Department Representatives (SMDR), Environmental Health Officers (EHO), and Preventive Medicine Technicians (PMT

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is to preserve unit combat effectiveness by providing informed technical information to the Commanding Officer or Officer in Charge concerning preventive medicine and environmental health.

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must be aware of specific health problems that may arise due to the unique nature of conditions in which operational forces of the Navy and Marine Corps are involved.

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Medical department

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maintains Preventive Medicine and Vector Control Authorized Medical Allowance List (637/638 AMALs) for use in MEF size operations.

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The Force Service Support Group of the Marine Expeditionary Force (MEF)

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MMART AMALs are maintained by

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NAVENPVNTMEDUS and NAVDISVECTECOLCONCENS

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ensure there are sufficient quantities of safe water for their personnel.

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Unit commanders are ultimately responsible

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responsible for providing sufficient potable water for the population to be served. This includes selecting sources of raw water and construction, operation, and maintenance of all the structures and facilities used for collection, treatment, and distribution of potable water.

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Engineers

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advises the commanding officer on water quality issues

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The medical department

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Water maybe obtained from various sources in the field including

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rivers, streams, ponds, lakes, wells, ice, snow, oceans, etc.

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Ground water sources must be located at least

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100 feet from all existing sources of contamination and situated so that the drainage is away from the well or spring.

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Desalinization is usually accomplished with

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a reverse osmosis water purification unit (ROWPU) and the water is disinfected after desalinization.

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the most common field purification
system in use. This versatile unit will produce
potable water from contaminated sources including
fresh, brackish, or sea water. The finished water must be disinfected to eliminate viruses and protect the water from microbial contamination.

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ROWPU

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is a transportable quick response water purification system capable of aerating, clarifying, filtering and disinfecting contaminated water.

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ERDLATOR

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the most common
method of disinfecting potable water

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Chlorination

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Sufficient chlorine is added to the water to achieve the desired free available chlorine (FAC) residual

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after a 30 minute contact time.

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This process is used to disinfect water containers and distribution systems initially (before they are used) or when they have become contaminated.

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Superchlorination

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Superchlorination is accomplished by chlorinating the water in a container or distribution system to at least

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100 ppm FAC and holding it in the container for 4 hours.

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must be displayed clearly on all sides of the container or at all water outlets during the process.

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“Poison Do Not Drink

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are intended for disinfecting water contained in small containers such as canteens or water jugs. These tablets are usually composed of iodine and are available through the standard stock system in bottles of 50 tablets.

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Water purification tablets

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Field water supplies must be tested bacteriologically at least

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weekly