FlexiQuiz - WELL CONTRACTORS CERTIFICATION CONSTRUCTION STANDARDS QUIZ1

Vertical seepage can occur readily outside when ______ is left unsealed in the ground near the surface

Borehole

Casing

Creviced rock

Wellhead

The well, if constructed to obtain water from an unconsolidated rock formation, shall be equipped with a screen that will prevent the entrance of formation material into the well

True

False

Why is a circular arrangement more efficient for a well point system

A central pump is needed

More hydraulic lift from centralized pump

Water travels faster in circles

None of the above

Which are the following are not good features of a well screen:

Close spacing of slot openings to provide maximum open area

Adaptibility to different conditions by use of various materials

Ample strength to resist forces during and after installation

Non single metal construction that rusts quickly

What conditions can be found in corrosive water where the pH is lower 7:

Hydrogen sulfide

Carbon dioxide

Chlorides

All of the above

None of the above