FREE Association of Boards of Certification Technical Proficiency and Best Practices Questions and Answers

Question 1

After a new water main is installed and pressure tested it should be...

Accepted Answer

Filled with a solution of 25 ppm to 50 ppm free chlorine for at least 24 hours prior to flushing

Answer

Flushed with clean water for 24 hours and put into service

Answer

Filled with clean water and allowed to sit for 5 days at full pressure before turning the water into the system

Answer

Photographed so that mapping can be avoided until the system is complete

Question 2

Calculate the volume, in gallons, of a tank that is 75 feet long, 20 feet wide, and 10 feet deep.

Accepted Answer

112,200 gallons

Answer

15,000 gallons

Answer

150,000 gallons

Answer

224,400 gallons

Question 3

An empty atmospheric storage tank is 8 feet in diameter and 32 feet high. How long will it take to fill 90% of the tank volume if a pump is discharging a constant 24 gallons per minute into the tank?

Accepted Answer

7 hours 31 minutes

Answer

8 hours 21 minutes

Answer

8 hours 23 minutes

Answer

9 hours 17 minutes

Question 4

What are the two most important safety concerns when entering a confined space?

Accepted Answer

Oxygen deficiency and hazardous gases

Answer

Corrosive chemicals and falls

Answer

Bad odors and claustrophobia

Answer

Extreme air temperatures and slippery surfaces

Question 5

Under the requirements of the Safe Drinking Water Act, it is the duty of the water purveyor to deliver potable water of proper quantity only as far as the...

Accepted Answer

Consumer's tap inside the home

Answer

Entry point of the distribution system

Answer

Customer's curb box and service connection

Answer

Furthest water main blow-off or sampling point