NEIEP 800 FINAL REVIEW QUESTIONS
WITH CORRECT SOLUTIONS
What is the minimum height of barricade in place around an open wellway? - ANSWER-
42 inches
What is the maximum angle of inclination for moving walks? - ANSWER-12 degrees
What is the major advantage of a hydraulic elevator? - ANSWER-Requires less building
structural support
If all other elements in a hydro elevator remain the same, what would be the effect of
increasing the size of the oil line? - ANSWER-Rate of flow is reduced
What tool is used to check a jack hole for plumb? - ANSWER-Spider bob
What is the operating pressure of a hydro elevator with a gross weight of 2500lbs and a
plunger area of 20 square in? - ANSWER-125psi (2500/20)
An oil reservoir is 22in long and 24in wide, how many gallons of oil will it take to fill it to
a depth of 18in? - ANSWER-42gal
(22x24x18 = 9504) (9504/231= 41.14)
Why is it important to follow a welding procedure using a sequence of short welds on
opposite sides of the cylinder? - ANSWER-To prevent warping of cylinder
If all other elements of a hydro elevator remain the same, what would be the effect of
increasing the diameter of the plunger? - ANSWER-System pressure would be reduced
How can you lower a hydro elevator without electrical power? - ANSWER-With manual
lowering valve
What is the assembly called that supports the platform of a hydro elevator? - ANSWER-
Bolster channels
Why is it necessary to run a ground wire to the car sling of a hydro elevator? -
ANSWER-To prevent electrical shock
Under what conditions would a GFCI remove power to a circuit? - ANSWER-When a
worker comes in contact with the supply lead and return wires
If the jack unit is installed in the well hole long before the elevator will be completed,
how do you prevent rusting of the plunger? - ANSWER-Fill with oil
WITH CORRECT SOLUTIONS
What is the minimum height of barricade in place around an open wellway? - ANSWER-
42 inches
What is the maximum angle of inclination for moving walks? - ANSWER-12 degrees
What is the major advantage of a hydraulic elevator? - ANSWER-Requires less building
structural support
If all other elements in a hydro elevator remain the same, what would be the effect of
increasing the size of the oil line? - ANSWER-Rate of flow is reduced
What tool is used to check a jack hole for plumb? - ANSWER-Spider bob
What is the operating pressure of a hydro elevator with a gross weight of 2500lbs and a
plunger area of 20 square in? - ANSWER-125psi (2500/20)
An oil reservoir is 22in long and 24in wide, how many gallons of oil will it take to fill it to
a depth of 18in? - ANSWER-42gal
(22x24x18 = 9504) (9504/231= 41.14)
Why is it important to follow a welding procedure using a sequence of short welds on
opposite sides of the cylinder? - ANSWER-To prevent warping of cylinder
If all other elements of a hydro elevator remain the same, what would be the effect of
increasing the diameter of the plunger? - ANSWER-System pressure would be reduced
How can you lower a hydro elevator without electrical power? - ANSWER-With manual
lowering valve
What is the assembly called that supports the platform of a hydro elevator? - ANSWER-
Bolster channels
Why is it necessary to run a ground wire to the car sling of a hydro elevator? -
ANSWER-To prevent electrical shock
Under what conditions would a GFCI remove power to a circuit? - ANSWER-When a
worker comes in contact with the supply lead and return wires
If the jack unit is installed in the well hole long before the elevator will be completed,
how do you prevent rusting of the plunger? - ANSWER-Fill with oil
