SPED Stress Analysis & Mechanical Integrity 2

Question 1

In ASME B31.3 piping stress analysis, what does the sustained stress range include?

Accepted Answer

Pressure, weight, and other sustained mechanical loads

Answer

Sustained stresses in ASME B31.3 encompass pressure, weight, and other continuously applied mechanical loads.

Question 2

Which flexibility analysis method is considered the most rigorous for complex piping systems?

Accepted Answer

Finite element analysis (FEA)

Answer

Finite element analysis provides the most accurate and rigorous stress results for complex piping geometries.

Question 3

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

Accepted Answer

Provide flexibility to absorb thermal growth

Answer

Expansion loops add piping flexibility that allows the system to absorb thermal expansion without overstressing equipment nozzles or supports.

Question 4

A piping system experiences a thermal anchor force of 50,000 lb. This force is most critical for which component evaluation?

Accepted Answer

Equipment nozzle load evaluation

Answer

Anchor forces from thermal expansion are transmitted directly into connected equipment nozzles, which must be evaluated against manufacturer allowable loads.

Question 5

Under ASME B31.3, the allowable displacement stress range (SA) increases when which condition applies?

Accepted Answer

Unused sustained stress allowance is available

Answer

ASME B31.3 allows the unused portion of the sustained stress allowance (Sh) to be added to SA, increasing the permissible displacement stress range.

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

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

SPED Stress Analysis & Mechanical Integrity 2