OREGON BOILERS LATEST
EXAM
What is the nominal wall thickness of 6" schedule 80 ASTM-A-53 -
ANSWERS-.432
What does the 150 on a valve body mean? - ANSWERS-150 PSI
maximum working pressure
What is the maximum pressure and temperature allowed for cast iron
fitting by ASME B31.1? - ANSWERS-# 250 @ 450 degree
An inert gas such as argon protects the weld pool from oxygen
contamination in the shielded metal arc welding process. - ANSWERS-
False
A welder holding an Oregon class 6 classification can weld under the
supervision of whom? - ANSWERS-Class 4 or class 5
A standard 2" pipe thread that has been properly cut has how many
perfect threads? - ANSWERS-7 perfect threads.
END OF
PAGE 1
, OREGON BOILERS LATEST
EXAM
The following is true about an electrode "E-7018" and the first two
numbers mean? - ANSWERS-E- electric welding,70= tensile strength;1
welding position; 8= special manufactures
Potassium added to welding electrode flux helps maintain the arc when
using AC current. - ANSWERS-False
Where in a weld joint is the heat affect zone? - ANSWERS-Adjacent to
the weld.
When GTAW welding filler metal is - ANSWERS-Both hand and power
feed.
When welding mild steel with GTAW the best results are achieved by
using - ANSWERS-DC current, reverse polarity.
A tungsten electrode with a red tip is? - ANSWERS-2% thorium oxide
A globe valve should always be installed with the pressure above the
disc? - ANSWERS-False
END OF
PAGE 2
EXAM
What is the nominal wall thickness of 6" schedule 80 ASTM-A-53 -
ANSWERS-.432
What does the 150 on a valve body mean? - ANSWERS-150 PSI
maximum working pressure
What is the maximum pressure and temperature allowed for cast iron
fitting by ASME B31.1? - ANSWERS-# 250 @ 450 degree
An inert gas such as argon protects the weld pool from oxygen
contamination in the shielded metal arc welding process. - ANSWERS-
False
A welder holding an Oregon class 6 classification can weld under the
supervision of whom? - ANSWERS-Class 4 or class 5
A standard 2" pipe thread that has been properly cut has how many
perfect threads? - ANSWERS-7 perfect threads.
END OF
PAGE 1
, OREGON BOILERS LATEST
EXAM
The following is true about an electrode "E-7018" and the first two
numbers mean? - ANSWERS-E- electric welding,70= tensile strength;1
welding position; 8= special manufactures
Potassium added to welding electrode flux helps maintain the arc when
using AC current. - ANSWERS-False
Where in a weld joint is the heat affect zone? - ANSWERS-Adjacent to
the weld.
When GTAW welding filler metal is - ANSWERS-Both hand and power
feed.
When welding mild steel with GTAW the best results are achieved by
using - ANSWERS-DC current, reverse polarity.
A tungsten electrode with a red tip is? - ANSWERS-2% thorium oxide
A globe valve should always be installed with the pressure above the
disc? - ANSWERS-False
END OF
PAGE 2
