Pipefitter Star Exam Questions and Answers | Fall 2025/2026
Update | 100% Correct
Question 1
What causes 90% of all construction injuries and deaths and are used to help OSHA inspectors improve their effectiveness?
Correct Answer
Focus Hazards
Question 2
What is the minimum safe working distance for overhead power lines?
Correct Answer
10 feet
Question 3
What is the standard procedure used to safely de-energize equipment on circuits before they are worked on?
Correct Answer
Lockout/Tagout
Page 1 of 206
,Question 4
Which of the following is not true about Material Safety Data Sheets?
Correct Answer
They can be written in any language
Question 5
What are the four focus inspections OSHA compliance officers look for?
Correct Answer
Fall Hazards, Electrical Hazards, Caught in, Struck by
Question 6
The sizes of pipe are identified by the measurement called the:
Correct Answer
Nominal pipe size NPS
Question 7
Steel pipe is supplied with the following end finish (es):
Correct Answer
PESC, T & C TBE
(All of the above)
Page 2 of 206
,Question 8
What is a typical type of welded pipe joints?
Correct Answer
Butt-welded, Socket-welded, Slip-on Flanged (All of the above)
Question 9
List the four principle functions of valves.
Correct Answer
Start/Stop, Regulate/Throttle, Relief, Reduce
Question 10
Regulating or throttling flow is done with a:
Correct Answer
Both B and C, (globe and gate valve)
Question 11
Name the two basic types of check valves.
Correct Answer
Lift and Swing
Page 3 of 206
, Question 12
The most common hanger used in piping systems is the:
Correct Answer
Clevis
Question 13
Never expose any part of a compressed gas cylinder to temperatures above:
Correct Answer
125°F
Question 14
The four types of copper tube joints are soldered, brazed, flared and _____?
Correct Answer
compression
Question 15
What is the maximum recommended service temperature when a brazed joint is used?
Correct Answer
350 degrees F
Page 4 of 206
Update | 100% Correct
Question 1
What causes 90% of all construction injuries and deaths and are used to help OSHA inspectors improve their effectiveness?
Correct Answer
Focus Hazards
Question 2
What is the minimum safe working distance for overhead power lines?
Correct Answer
10 feet
Question 3
What is the standard procedure used to safely de-energize equipment on circuits before they are worked on?
Correct Answer
Lockout/Tagout
Page 1 of 206
,Question 4
Which of the following is not true about Material Safety Data Sheets?
Correct Answer
They can be written in any language
Question 5
What are the four focus inspections OSHA compliance officers look for?
Correct Answer
Fall Hazards, Electrical Hazards, Caught in, Struck by
Question 6
The sizes of pipe are identified by the measurement called the:
Correct Answer
Nominal pipe size NPS
Question 7
Steel pipe is supplied with the following end finish (es):
Correct Answer
PESC, T & C TBE
(All of the above)
Page 2 of 206
,Question 8
What is a typical type of welded pipe joints?
Correct Answer
Butt-welded, Socket-welded, Slip-on Flanged (All of the above)
Question 9
List the four principle functions of valves.
Correct Answer
Start/Stop, Regulate/Throttle, Relief, Reduce
Question 10
Regulating or throttling flow is done with a:
Correct Answer
Both B and C, (globe and gate valve)
Question 11
Name the two basic types of check valves.
Correct Answer
Lift and Swing
Page 3 of 206
, Question 12
The most common hanger used in piping systems is the:
Correct Answer
Clevis
Question 13
Never expose any part of a compressed gas cylinder to temperatures above:
Correct Answer
125°F
Question 14
The four types of copper tube joints are soldered, brazed, flared and _____?
Correct Answer
compression
Question 15
What is the maximum recommended service temperature when a brazed joint is used?
Correct Answer
350 degrees F
Page 4 of 206
