SPED Pipe Support Design

Question 1

What is the primary purpose of a pipe anchor in a piping system?

Accepted Answer

To restrain all pipe movement in all directions at a fixed point

Answer

An anchor restrains all translational and rotational degrees of freedom, fixing the pipe completely at that location.

Question 2

Which type of pipe support allows axial movement but restricts lateral movement?

Accepted Answer

Guide

Answer

A guide restrains lateral (transverse) movement while permitting axial displacement along the pipe centerline.

Question 3

Which MSS standard governs the materials, design, and manufacture of pipe hangers and supports?

Accepted Answer

MSS SP-58

Answer

MSS SP-58 specifically covers pipe hangers and supports — materials, design, and manufacture, including component types and load ratings.

Question 4

What is the primary advantage of a variable spring hanger over a rigid rod hanger?

Accepted Answer

It accommodates vertical thermal movement while continuously supporting pipe weight

Answer

Variable spring hangers compress or extend as the pipe moves thermally, maintaining a changing but continuous support load throughout the travel range.

Question 5

Which pipe support device allows slow thermal movements but locks up rigidly under dynamic loads such as vibration or seismic events?

Accepted Answer

Snubber

Answer

Snubbers (hydraulic or mechanical) permit gradual thermal displacement but engage and provide rigid restraint when subjected to rapid dynamic loading.

(SPED) Society of Piping Engineers and Designers Certification Practice Test

(SPED) Society of Piping Engineers and Designers Certification Practice Test

SPED Pipe Support Design