Piping Basics of Piping 3

Question 1

What is the purpose of a pipe expansion loop?

Accepted Answer

To accommodate thermal expansion and contraction

Answer

Expansion loops provide flexibility in a piping system to absorb the dimensional changes caused by temperature fluctuations without stressing the pipe or fittings.

Question 2

Which ASME standard covers pressure piping for process plants?

Accepted Answer

ASME B31.3

Answer

ASME B31.3 is the Process Piping code that governs design, materials, fabrication, inspection, and testing of piping in chemical and petroleum plants.

Question 3

What is the difference between a concentric and an eccentric reducer?

Accepted Answer

Concentric reducers have aligned centerlines; eccentric reducers have one flat side

Answer

In a concentric reducer the centerlines of both ends are aligned, while an eccentric reducer has one flat side, keeping the bottom of the pipe level to prevent air pockets or liquid accumulation.

Question 4

What is 'water hammer' in a piping system?

Accepted Answer

A pressure surge from sudden change in flow velocity

Answer

Water hammer is a pressure shock wave that occurs when fluid in motion is suddenly stopped or redirected, causing a banging noise and potentially damaging pipes and fittings.

Question 5

Which fitting is used to connect three pipes at a branch point?

Accepted Answer

Tee

Answer

A tee fitting has three openings — one inlet and two outlets (or one run and one branch) — used to split or combine flow at a junction.

Piping Practice Test

Piping Practice Test

Piping Basics of Piping 3