WATER DISTRIBUTION PRACTICE 240 FINAL
PAPER COMPLETE QUESTIONS AND ANSWERS
VERIFIED PREPARATION
◉ The bubbles formed in a positive multiple tube fermentation test
are.
Answer: Carbon Dioxide
◉ The maximum rate of withdrawal of gas from a 150lb chlorine
cylinder in 24-hours is.
Answer: 40 lbs
◉ If you encounter a liquid chlorine leak in a one tone container,
what action should you take first, to reduce the severity of the leak?.
Answer: Rotate the container to place the leak at the top
◉ The most commonly used water disinfectant in the United States
is.
Answer: Chlorine
◉ When collecting a distribution system sample, the water should
be allowed to run for a period of time prior to sample collection.
How long.
, Answer: As long as necessary to permit cleaning of service line
◉ Sample bottles wich are furnished by a certified laboratory for
collection of bacteriological samples.
Answer: Are ready to use
◉ The difference between water pressure upstream and
downstream of a pump when it is not in operations is know as the.
Answer: Total static head
◉ A device that automatically shuts off flow in an elevated storage
tank when the water level in the tank reache a preset level is termed
a.
Answer: Altitude valve
◉ In an occupied trench requiring personal egress what is the
maximum allowable distance between a worker and an exit letter.
Answer: 25 feet
◉ A water bearing formation in the soil is referred to as.
Answer: An aquifer
PAPER COMPLETE QUESTIONS AND ANSWERS
VERIFIED PREPARATION
◉ The bubbles formed in a positive multiple tube fermentation test
are.
Answer: Carbon Dioxide
◉ The maximum rate of withdrawal of gas from a 150lb chlorine
cylinder in 24-hours is.
Answer: 40 lbs
◉ If you encounter a liquid chlorine leak in a one tone container,
what action should you take first, to reduce the severity of the leak?.
Answer: Rotate the container to place the leak at the top
◉ The most commonly used water disinfectant in the United States
is.
Answer: Chlorine
◉ When collecting a distribution system sample, the water should
be allowed to run for a period of time prior to sample collection.
How long.
, Answer: As long as necessary to permit cleaning of service line
◉ Sample bottles wich are furnished by a certified laboratory for
collection of bacteriological samples.
Answer: Are ready to use
◉ The difference between water pressure upstream and
downstream of a pump when it is not in operations is know as the.
Answer: Total static head
◉ A device that automatically shuts off flow in an elevated storage
tank when the water level in the tank reache a preset level is termed
a.
Answer: Altitude valve
◉ In an occupied trench requiring personal egress what is the
maximum allowable distance between a worker and an exit letter.
Answer: 25 feet
◉ A water bearing formation in the soil is referred to as.
Answer: An aquifer
