PMT 108, TEST 4 QUESTIONS
WITH CORRECT DETAILED
ANSWERS
Alkalinity - Answer- Amount of alkaline compounds present in pool water for purpose as
functioning as buffer
Alum - Answer- Fine white powdered aluminum sulfate compound
Produces a flocculate of settleable particles removed by filtration
Anthracite - Answer- Hard finely ground coal used as a swimming pool filter medium
Appurtenances - Answer- Equipment components of plumbing circulation system of a
swimming pool
Backwash - Answer- Procedure for cleaning swimming pool filters by reversing the flow
of water through the filter
Buffer - Answer- Resists change in acidit/alkalinity of pool water by neutralizing acids
and bases
Cross connections - Answer- Actual or potential connection between public water
supply and source of contamination or pollution
Cyanuric acid - Answer- Compound added to pool water to reduce decomposition of
chlorine residual
Diatomaceous earth - Answer- White powder composed of fossilized skeletons of one
celled diatoms used as filter medium in swimming pools
Hair strainer - Answer- Device placed ahead of pump to prevent hair lint and paper
debris from clogging pump
Muriatic acid - Answer- Used to reduce alkalinity in pool water
Precipitate - Answer- Insoluble compound formed by chemical action between two or
more normally soluble compounds in solution
Skimmer - Answer- Continually removes floating debris and is designed to handle 80%
of recirculated pool water
, Slurry feeder - Answer- Designed to introduce or feed a slurry of chemicals into the pool
without clogging
Soda ash (sodium bicarbonate) - Answer- Used to increase pH and total alkalinity
Neutralizes hydrochloric acid
Sodium bisulfate - Answer- Chemical which produces mild acidic solution
Used to lower pH
Surge tank - Answer- Used to collect overflow water from the pool
Can add make up water to pool
Turbidity - Answer- Degree to which suspended particles of pool water obscure visibility
Governing authorities - Answer- NAVFACENGCOM
CHIEF, bureau of medicine and surgery
Commanding officer
Installation Medical Authority
Public Works Officer
Types of swimming pools
Fill and draw pools - Answer- Emptying and refilling
No sat method of treatment
Only authorized with approval from NAVFACENGCOM
Types of swimming pools
Flow-through pools - Answer- Allows source water to flow through the pool basin
No satisfactory method of treatment
Not normally authorized
Types of swimming pools
Recirculated pools - Answer- Water is continuously withdrawn filtered disinfected and
returned
Acceptable methods of disinfection
Types of swimming pools
Wading pools - Answer- Max depth of 24 inches
Infection is higher due to children
Overflow should be of open type
Water supply and recirculation must be part of main pools circulation
It is generally recommended that wading pools be converted to... - Answer- Splash pads
Splash pads - Answer- Serves same purpose as wading pools but eliminates many of
the hazards
WITH CORRECT DETAILED
ANSWERS
Alkalinity - Answer- Amount of alkaline compounds present in pool water for purpose as
functioning as buffer
Alum - Answer- Fine white powdered aluminum sulfate compound
Produces a flocculate of settleable particles removed by filtration
Anthracite - Answer- Hard finely ground coal used as a swimming pool filter medium
Appurtenances - Answer- Equipment components of plumbing circulation system of a
swimming pool
Backwash - Answer- Procedure for cleaning swimming pool filters by reversing the flow
of water through the filter
Buffer - Answer- Resists change in acidit/alkalinity of pool water by neutralizing acids
and bases
Cross connections - Answer- Actual or potential connection between public water
supply and source of contamination or pollution
Cyanuric acid - Answer- Compound added to pool water to reduce decomposition of
chlorine residual
Diatomaceous earth - Answer- White powder composed of fossilized skeletons of one
celled diatoms used as filter medium in swimming pools
Hair strainer - Answer- Device placed ahead of pump to prevent hair lint and paper
debris from clogging pump
Muriatic acid - Answer- Used to reduce alkalinity in pool water
Precipitate - Answer- Insoluble compound formed by chemical action between two or
more normally soluble compounds in solution
Skimmer - Answer- Continually removes floating debris and is designed to handle 80%
of recirculated pool water
, Slurry feeder - Answer- Designed to introduce or feed a slurry of chemicals into the pool
without clogging
Soda ash (sodium bicarbonate) - Answer- Used to increase pH and total alkalinity
Neutralizes hydrochloric acid
Sodium bisulfate - Answer- Chemical which produces mild acidic solution
Used to lower pH
Surge tank - Answer- Used to collect overflow water from the pool
Can add make up water to pool
Turbidity - Answer- Degree to which suspended particles of pool water obscure visibility
Governing authorities - Answer- NAVFACENGCOM
CHIEF, bureau of medicine and surgery
Commanding officer
Installation Medical Authority
Public Works Officer
Types of swimming pools
Fill and draw pools - Answer- Emptying and refilling
No sat method of treatment
Only authorized with approval from NAVFACENGCOM
Types of swimming pools
Flow-through pools - Answer- Allows source water to flow through the pool basin
No satisfactory method of treatment
Not normally authorized
Types of swimming pools
Recirculated pools - Answer- Water is continuously withdrawn filtered disinfected and
returned
Acceptable methods of disinfection
Types of swimming pools
Wading pools - Answer- Max depth of 24 inches
Infection is higher due to children
Overflow should be of open type
Water supply and recirculation must be part of main pools circulation
It is generally recommended that wading pools be converted to... - Answer- Splash pads
Splash pads - Answer- Serves same purpose as wading pools but eliminates many of
the hazards
