HCC WELD 110: Oxy-Acetylene Torch Safety
Directions: Circle the letter associated with the correct answer.
1. A torch should always be lit with a?
A. Cigarette Lighter
B. Striker
C. Matches
D. Propane Torch
2. The lens of oxy-acetylene torch eye protection should be shade numbers?
a. 10 – 12
b. 8 – 10
c. 4 – 6
d. 1 – 3
3. While identifying torch parts red represents?
A. Oxygen
B. Harmful
C. Acetylene
D. Stop
4. While identifying torch parts green represents?
A. Oxygen
B. Safe
C. Acetylene
D. Go
5. What connectors have a V-groove and left handed threads on the torch body and
at the regulator tap screw?
A. Oxygen
B. Acetylene
6. What connectors have plain surfaces and right handed threads on the torch body
and at the regulator tap screw?
A. Oxygen
B. Acetylene
7. What is the max psi. that acetylene can be set at on the T – screw?
A. 20
B. 5
C. 25
D. 15
8. What is the max psi. that oxygen should be set at on the T – screw?
A. 20
B. 30
C. 40
D. 50
9. The Heartland acetylene regulators should never be set above what psi for the
cutting torch unless specified otherwise?
A. 10
B. 5
C. 7
D. 2
10. It is recommended that the oxygen in the Heartland lab be set at what psi for the
cutting torch unless specified otherwise?
A. 20
B. 30
C. 40
D. 50
11. What flame has excess oxygen with no feather and makes a hissing sound?
A. Oxidizing
B. Carburizing
C. Neutral
D. Red
12. What flame has excess acetylene with an acetylene feather two to three times the
length of the inner cone?
A. Oxidizing
B. Carburizing
C. Neutral
D. Red
13. What flame burns equal amounts of oxygen and acetylene and has a clear edged
inner cone?
A. Oxidizing
B. Carburizing
C. Neutral
D. Red
14. Heating prior to a welding or cutting operation is referred to as?
A. Preheating
B. Heating
C. Flashback
D. Backfire
15. A short pop of the torch flame followed by extinguishing of the flame or
continued burning of the gases.
A. Preheating
B. Heating
C. Flashback
D. Backfire
Directions: for a true statement mark T and for a false statement mark F
_____ 16. Frayed clothing is recommended to be worn while operating the oxy-acetylene
cutting torch?
_____ 17. The work area should be kept free of grease, oil, and flammable materials?
_____ 18. The type of shoe that should be worn while using the oxy-acetylene torch are
sandals?
_____ 19. Safety glasses should be worn under the shaded face shield and cutting torch
goggles?
_____ 20. Leather gloves should be used to pick up hot metal?
_____ 21. Pant legs should always be cuffed at the ankle before an operation begins?
_____ 22. One should stand on the opposite side of the regulator when opening the main
tank valve?
_____ 23. The main tank valve on the oxygen side of the unit should be opened all the
way?
_____ 24. The main tank valve on the acetylene side of the unit should be opened all the
way?
_____ 25. The acetylene valve on the torch body should never be opened more than a
quarter turn right before lighting?
_____ 26. While shutting down the unit the oxygen valve should be turned off first
followed by the acetylene valve?
_____ 27. The lines and regulators of the oxy-acetylene unit should be bleed or purged
first before loosening the T-screws?
_____ 28. The T-screws should be loosened after the lines are bleed or purged?
_____ 29. The hoses for the torch should be left on the ground and bench for storing?
_____ 30. All hot metal should be left to air dry on the floor for 24 hrs.
_____ 31. All torch hoses come encased together with one oxygen hose and one
acetylene hose?
_____ 32. An oil based product should be used to keep the T-screws loosened?
Directions: identify the following torch items using the key below.
33.
_________________________
A. = Oxygen Regulator
B = Striker
C = Cutting Torch Unit
D = Torch Tip
E = Acetylene Regulator
34.
_________________________
35.
_________________________
36.
_________________________
37.
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