Certified Pipefitter Blueprint Reading and Symbols Questions and Answers

Question 1

On a piping isometric drawing, what does the abbreviation 'EL' typically precede?

Accepted Answer

The elevation of a pipe's centerline

Answer

A list of required elbow fittings

Answer

An electrical grounding location

Answer

The designated equipment layout number

Question 2

A pipefitter is reviewing a P&ID and sees a valve symbol represented by two triangles pointing towards each other with a solid black circle in the middle. What type of valve does this symbol represent?

Accepted Answer

Globe Valve

Answer

Gate Valve

Answer

Ball Valve

Answer

Check Valve

Question 3

While examining a welding symbol on a blueprint, a pipefitter notes a small flag at the junction of the reference line and the arrow. What does this flag signify?

Accepted Answer

The weld must be performed on-site (field weld).

Answer

The weld requires special inspection.

Answer

The weld should be completed in the fabrication shop.

Answer

The weld is on the 'other side' of the joint.

Question 4

A blueprint shows a pipeline with the label '6"-CS150-A-1021'. Which part of this label most likely indicates the nominal pipe size?

Accepted Answer

6"

Answer

A-1021

Answer

CS150

Answer

There is not enough information

Question 5

Which of the following drawing types is NOT drawn to scale but provides a three-dimensional representation of a single pipeline, showing all fittings, dimensions, and elevations?

Accepted Answer

Piping Isometric Drawing

Answer

Piping and Instrumentation Diagram (P&ID)

Answer

Orthographic Drawing

Answer

Plot Plan

Question 6

On a blueprint, a symbol for a pipe fitting shows a circle with a dot in the center, connecting two perpendicular lines. This represents which type of fitting view?

Accepted Answer

A tee fitting with the branch flowing towards the viewer

Answer

A 90-degree elbow shown from the side

Answer

A concentric reducer

Answer

A flanged joint