Oregon boilers Exam 2025-2026 Most Recent
Version Comprehensive 60 Questions and
Verified Answers Accurate Solutions Already
Graded A+ Get it 100% Correct
A globe valve should always be installed with the pressure above the disc? - CORRECT
ANSWER: False
A mixture of oil and oxygen under pressure will most likely. - CORRECT ANSWER: All of
the above- explode, cause a fire, ruin your day
A standard 2" pipe thread that has been properly cut has how many perfect threads? -
CORRECT ANSWER: 7 perfect threads.
A tungsten electrode with a red tip is? - CORRECT ANSWER: 2% thorium oxide
A welder holding an Oregon class 6 classification can weld under the supervision of
whom? - CORRECT ANSWER: Class 4 or class 5
Acetylene used in a metal cutting torch should never exceed? - CORRECT ANSWER:
15 psi
An inert gas such as argon protects the weld pool from oxygen contamination in the
shielded metal arc welding process. - CORRECT ANSWER: False
As an alternative to hydrostatic testing boiler external piping may be pneumatically
tested? - CORRECT ANSWER: True
, ASTM A-120 pipe may be used interchangeably with ASTM A 53-B for steam service -
CORRECT ANSWER: False
AWS symbols are used in fabrication drawings to denote the type of weld to be made? -
CORRECT ANSWER: True!
Cold bending pipe distortion can be prevented by? - CORRECT ANSWER: Adding
sand!
Doubling the pipe size increases the pipe capacity by - CORRECT ANSWER: 4 times
GMAW welds places 15 to 32 amps and 50 to 600 volts? - CORRECT ANSWER: False
High pressure boiler blow down piping may discharge into sanitary sewer if there is an
air gap of 2" between the floor drain and blow down tank. - CORRECT ANSWER: True
High pressure boiler bottom blow-down piping between the boiler and the required valve
is - CORRECT ANSWER: Boiler external piping under ASME B31.1
How many gallons are in 1 cubic foot of water? - CORRECT ANSWER: 7.5 gallons
How many gallons will 4" pipe that is schedule 40 and a foot long hold? - CORRECT
ANSWER: .662
How much does 1gallon of water weigh? - CORRECT ANSWER: 8.33
How should lo-high welding rod be stored - CORRECT ANSWER: According to
manufacturers recommendation.
Version Comprehensive 60 Questions and
Verified Answers Accurate Solutions Already
Graded A+ Get it 100% Correct
A globe valve should always be installed with the pressure above the disc? - CORRECT
ANSWER: False
A mixture of oil and oxygen under pressure will most likely. - CORRECT ANSWER: All of
the above- explode, cause a fire, ruin your day
A standard 2" pipe thread that has been properly cut has how many perfect threads? -
CORRECT ANSWER: 7 perfect threads.
A tungsten electrode with a red tip is? - CORRECT ANSWER: 2% thorium oxide
A welder holding an Oregon class 6 classification can weld under the supervision of
whom? - CORRECT ANSWER: Class 4 or class 5
Acetylene used in a metal cutting torch should never exceed? - CORRECT ANSWER:
15 psi
An inert gas such as argon protects the weld pool from oxygen contamination in the
shielded metal arc welding process. - CORRECT ANSWER: False
As an alternative to hydrostatic testing boiler external piping may be pneumatically
tested? - CORRECT ANSWER: True
, ASTM A-120 pipe may be used interchangeably with ASTM A 53-B for steam service -
CORRECT ANSWER: False
AWS symbols are used in fabrication drawings to denote the type of weld to be made? -
CORRECT ANSWER: True!
Cold bending pipe distortion can be prevented by? - CORRECT ANSWER: Adding
sand!
Doubling the pipe size increases the pipe capacity by - CORRECT ANSWER: 4 times
GMAW welds places 15 to 32 amps and 50 to 600 volts? - CORRECT ANSWER: False
High pressure boiler blow down piping may discharge into sanitary sewer if there is an
air gap of 2" between the floor drain and blow down tank. - CORRECT ANSWER: True
High pressure boiler bottom blow-down piping between the boiler and the required valve
is - CORRECT ANSWER: Boiler external piping under ASME B31.1
How many gallons are in 1 cubic foot of water? - CORRECT ANSWER: 7.5 gallons
How many gallons will 4" pipe that is schedule 40 and a foot long hold? - CORRECT
ANSWER: .662
How much does 1gallon of water weigh? - CORRECT ANSWER: 8.33
How should lo-high welding rod be stored - CORRECT ANSWER: According to
manufacturers recommendation.
