PIPEFITTER STAR EXAM QUESTIONS & ANSWERS 2026-2027 … EXAM
P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
Pipefitter STAR Exam
Questions & Answers 2026-
2027 | Latest Verified Exam
Prep
Verified Answers Exam Ready 798 QUESTIONS
DOCUMENT OVERVIEW
This document provides 798 verified pipefitting exam questions with their correct answers,
covering essential safety and technical knowledge. It is directly suitable for certification
exam preparation, offering a comprehensive resource for study and review of fundamental
pipefitting concepts.
TOPICS
• Safety and Hazard Recognition • Piping Fundamentals
• Materials and Properties • Valves and Controls
• Cylinders and Gas Handling • Pipe Bending and Offsets
• Rigging and Lifting • Welding and Brazing
• Mathematics and Calculations • Electrical Principles
• Fluid Mechanics and Thermodynamics • Combustion and Heat Transfer
• Pumps and Compressors • Drawing Interpretation
• Refrigeration and HVAC • Tools and Equipment
• Boilers and Steam Systems
Page 1
, E XA M Q U EST I O N S
Q1 QUESTION 1 OF 798
What causes 90% of all construction injuries and deaths and are used to help OSHA
inspectors improve their effectiveness?
CORRECT ANSWER
Focus Hazards
Q2 QUESTION 2 OF 798
What is the minimum safe working distance for overhead power lines?
CORRECT ANSWER
10 feet
Q3 QUESTION 3 OF 798
Which of the following is not true about Material Safety Data Sheets?
CORRECT ANSWER
They can be written in any language
Q4 QUESTION 4 OF 798
Never expose any part of a compressed gas cylinder to temperatures above:
CORRECT ANSWER
125°F
Page 2
, Q5 QUESTION 5 OF 798
Add: 5 1/8 + 1 1/4 + 4 ½ =
CORRECT ANSWER
10 7/8
Q6 QUESTION 6 OF 798
Inhalation, ingestion, absorption and injection are four routes of entry.
CORRECT ANSWER
t
Q7 QUESTION 7 OF 798
The welder is at most serious and immediate risk of
CORRECT ANSWER
electrocution
Q8 QUESTION 8 OF 798
The first two digits on welding rod indicate?
CORRECT ANSWER
tensile strength
Q9 QUESTION 9 OF 798
A metal which has a high iron content is known as a _______ metal.
Page 3
, CORRECT ANSWER
Ferrous
Q10 QUESTION 10 OF 798
UNIFORM LENGTHS OF STEEL PIPE ARE WHAT LENGTH (±1")
CORRECT ANSWER
21'
Q11 QUESTION 11 OF 798
WHAT IS THE PRESSURE 1/4 THE WAY UP FROM THE BOTTOM OF A PIPE 100' TALL FILLED
WITH WATER
CORRECT ANSWER
32.47
Q12 QUESTION 12 OF 798
A machine has a primary pulley of 6 in. and a secondary pulley of 24 in. What is the gear ratio?
CORRECT ANSWER
4 to 1
Q13 QUESTION 13 OF 798
What should an outside attendant do to rescue a worker who shows physiological effects of
exposure in a confined space?
CORRECT ANSWER
Notify response team and allow them to rescue.
Page 4
P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
Pipefitter STAR Exam
Questions & Answers 2026-
2027 | Latest Verified Exam
Prep
Verified Answers Exam Ready 798 QUESTIONS
DOCUMENT OVERVIEW
This document provides 798 verified pipefitting exam questions with their correct answers,
covering essential safety and technical knowledge. It is directly suitable for certification
exam preparation, offering a comprehensive resource for study and review of fundamental
pipefitting concepts.
TOPICS
• Safety and Hazard Recognition • Piping Fundamentals
• Materials and Properties • Valves and Controls
• Cylinders and Gas Handling • Pipe Bending and Offsets
• Rigging and Lifting • Welding and Brazing
• Mathematics and Calculations • Electrical Principles
• Fluid Mechanics and Thermodynamics • Combustion and Heat Transfer
• Pumps and Compressors • Drawing Interpretation
• Refrigeration and HVAC • Tools and Equipment
• Boilers and Steam Systems
Page 1
, E XA M Q U EST I O N S
Q1 QUESTION 1 OF 798
What causes 90% of all construction injuries and deaths and are used to help OSHA
inspectors improve their effectiveness?
CORRECT ANSWER
Focus Hazards
Q2 QUESTION 2 OF 798
What is the minimum safe working distance for overhead power lines?
CORRECT ANSWER
10 feet
Q3 QUESTION 3 OF 798
Which of the following is not true about Material Safety Data Sheets?
CORRECT ANSWER
They can be written in any language
Q4 QUESTION 4 OF 798
Never expose any part of a compressed gas cylinder to temperatures above:
CORRECT ANSWER
125°F
Page 2
, Q5 QUESTION 5 OF 798
Add: 5 1/8 + 1 1/4 + 4 ½ =
CORRECT ANSWER
10 7/8
Q6 QUESTION 6 OF 798
Inhalation, ingestion, absorption and injection are four routes of entry.
CORRECT ANSWER
t
Q7 QUESTION 7 OF 798
The welder is at most serious and immediate risk of
CORRECT ANSWER
electrocution
Q8 QUESTION 8 OF 798
The first two digits on welding rod indicate?
CORRECT ANSWER
tensile strength
Q9 QUESTION 9 OF 798
A metal which has a high iron content is known as a _______ metal.
Page 3
, CORRECT ANSWER
Ferrous
Q10 QUESTION 10 OF 798
UNIFORM LENGTHS OF STEEL PIPE ARE WHAT LENGTH (±1")
CORRECT ANSWER
21'
Q11 QUESTION 11 OF 798
WHAT IS THE PRESSURE 1/4 THE WAY UP FROM THE BOTTOM OF A PIPE 100' TALL FILLED
WITH WATER
CORRECT ANSWER
32.47
Q12 QUESTION 12 OF 798
A machine has a primary pulley of 6 in. and a secondary pulley of 24 in. What is the gear ratio?
CORRECT ANSWER
4 to 1
Q13 QUESTION 13 OF 798
What should an outside attendant do to rescue a worker who shows physiological effects of
exposure in a confined space?
CORRECT ANSWER
Notify response team and allow them to rescue.
Page 4
