Piping Engineering 3

Question 1

What is the function of an expansion loop in a piping system?

Accepted Answer

To absorb thermal expansion and contraction without over-stressing the pipe

Answer

Expansion loops are U-shaped pipe sections that flex to accommodate dimensional changes caused by temperature variations, relieving thermal stress.

Question 2

Which flange facing type is most commonly used for standard pressure piping applications?

Accepted Answer

Raised Face (RF)

Answer

Raised Face flanges are the most widely used flange facing type in industrial piping, compatible with most gasket types and pressure classes.

Question 3

What does NPS stand for in piping specifications?

Accepted Answer

Nominal Pipe Size

Answer

NPS (Nominal Pipe Size) is a North American standard designating pipe sizes, where the number does not necessarily equal the actual outside diameter.

Question 4

What is water hammer in a piping system?

Accepted Answer

A pressure surge caused by sudden change in fluid velocity

Answer

Water hammer is a pressure transient that occurs when fluid flow is suddenly stopped or redirected, creating a shockwave through the piping system.

Question 5

In isometric drawings for piping, what does a spool represent?

Accepted Answer

A prefabricated pipe assembly section

Answer

A spool is a prefabricated piping assembly, typically consisting of pipe, fittings, and sometimes valves, fabricated in a shop and installed as a unit in the field.

Piping Practice Test

Piping Practice Test

Piping Engineering 3