The maximum pneumatic test pressure should be expressed in which unit in the given context?

The maximum pneumatic test pressure should be expressed in which unit in the given context?

• A. 2 psi
• B. 5 psi
• C. 10 psi
• D. 20 psi

Answer: (B)

When performing a pneumatic test, use a pressure unit that aligns with common field practice for air tests, and keep the pressure low for safety. The maximum pneumatic test pressure is five pounds per square inch (psi), expressed as gauge pressure (psig). This level is high enough to reveal leaks but low enough to minimize the risk of bursting pipes, seals, or creating hazardous conditions from compressed air. Pressures at ten or twenty psi would raise risk substantially, while two psi might not reliably detect leaks in many joints. So the pressure is expressed in psi, with five psi as the safe, standard maximum in this context.

When performing a pneumatic test, use a pressure unit that aligns with common field practice for air tests, and keep the pressure low for safety. The maximum pneumatic test pressure is five pounds per square inch (psi), expressed as gauge pressure (psig). This level is high enough to reveal leaks but low enough to minimize the risk of bursting pipes, seals, or creating hazardous conditions from compressed air. Pressures at ten or twenty psi would raise risk substantially, while two psi might not reliably detect leaks in many joints. So the pressure is expressed in psi, with five psi as the safe, standard maximum in this context.