Steamfitter Pipe Systems and Materials 3

Question 1

Which ASME piping code governs power piping systems, including steam, feedwater, and drains in power plants and industrial facilities?

Accepted Answer

ASME B31.1 (Power Piping)

Answer

ASME B31.3 (Process Piping)

Answer

ASME B31.5 (Refrigeration Piping)

Answer

ASME B31.9 (Building Services Piping)

Question 2

When performing a hydrostatic pressure test on a completed piping system, the test pressure is typically set at what value relative to the design pressure?

Accepted Answer

1.5 times the design pressure

Answer

Equal to the design pressure

Answer

2.0 times the design pressure

Answer

0.5 times the design pressure

Question 3

What calculation method is typically used under ASME codes to determine the required wall thickness of a pipe for pressure service?

Accepted Answer

The Barlow formula or equivalent code stress calculations

Answer

Measuring the pipe's outer diameter only

Answer

Selecting the heaviest available schedule from a standard table

Answer

Calculating based on pipe length and material weight alone

Question 4

What is the term for the maximum stress that a pipe material is permitted to experience at a given operating temperature, as defined by ASME codes?

Accepted Answer

Allowable stress

Answer

Ultimate tensile strength

Answer

Yield strength

Answer

Hoop stress

Question 5

What is the purpose of a pipe anchor in a steam distribution system?

Accepted Answer

To fix the pipe's position and absorb the forces generated by thermal expansion

Answer

To allow the pipe to move freely in all directions due to thermal expansion

Answer

To support the pipe's weight while allowing axial movement

Answer

To prevent corrosion at pipe support points

Question 6

Which ASME piping code applies to process piping in chemical, petroleum refining, and pharmaceutical facilities?

Accepted Answer

ASME B31.3

Answer

ASME B31.1

Answer

ASME B31.5

Answer

ASME B31.9

Question 7

What is the term for the stress in a pipe wall caused by internal pressure acting on the cylindrical cross-section of the pipe?

Accepted Answer

Hoop (circumferential) stress

Answer

Longitudinal stress

Answer

Bending stress

Answer

Shear stress