Piping Piping Supports and Hangers 2

Question 1

What is a 'constant support hanger' designed to maintain?

Accepted Answer

A constant supporting force throughout the pipe's range of vertical travel

Answer

Constant support hangers use a spring-counterweight mechanism to maintain a nearly constant supporting force regardless of the pipe's vertical position.

Question 2

A pipe guide support differs from a pipe anchor in that a guide:

Accepted Answer

Allows axial movement but restricts lateral movement

Answer

A guide permits movement along the pipe axis (axial direction) while restraining lateral and sometimes vertical movement to keep the pipe aligned.

Question 3

According to ASME B31.3, when calculating maximum span between supports for liquid-filled process piping, the designer must consider:

Accepted Answer

Both the pipe weight and the weight of fluid, insulation, and allowable sag

Answer

Span calculations must account for the combined dead weight of pipe, fluid contents, insulation, and any other attachments, while keeping deflection within allowable limits.

Question 4

What is a 'snubber' used for in piping systems?

Accepted Answer

To restrain dynamic loads such as seismic or water hammer while allowing slow thermal movement

Answer

Snubbers (hydraulic or mechanical) lock under fast dynamic loads like earthquakes or water hammer, yet release slowly to allow thermal movement.

Question 5

Which MSS SP standard specifically covers the selection and application of pipe hangers?

Accepted Answer

MSS SP-69

Answer

MSS SP-69 covers the selection and application of pipe hangers and supports, while SP-58 covers their design and manufacture.

Piping Practice Test

Piping Practice Test

Piping Piping Supports and Hangers 2