wpi-water-distribution-operator-class-4 Practice Test

1Single Choice

A water distribution operator is preparing to take a 1.0 MG elevated storage tank out of service for routine interior inspection. Which of the following is the most appropriate sequence for draining the tank prior to entry?

A.Close the altitude valve, open the drain, and allow the tank to flow by gravity into the distribution system until empty
B.Close the inlet/outlet valve to isolate the tank, then pump or drain the remaining water to a designated disposal point before entry
C.Drain the tank directly into a nearby storm sewer without contacting downstream customers
D.Partially drain the tank and enter while water remains in the bottom to maintain structural stability

Reveal the answer to continue