1. Compressed Cylinder Safety
NCMAQB

2. Subject to damage
from other activities in
the vicinity
Electrical cord in
Contact with the
cylinder
Cylinder laying
in a horizontal
position.

3. Cylinders are not protected from falling. Note
Chain
Cylinders are not protected from falling. Note
that the Chain is not secured across.

4. 2. Cylinder should be stored 3. Subject to damage.
Electrical
Cord
Cylinder not secured
2. Cylinder should be stored
3. Subject to damage.
4. Electrical cord draped over.

5. 1. Small cylinder not tied off
2. Combustibles stored with cylinders
3. Bad housekeeping
4. Acetylene and Oxygen stored
too close together and no chain.

6. 1. Cylinder with no valve or cap installed
2. Laying horizontal on the ground
3. Subject to damage

7. Cylinder is damaged. Should be taken out of service immediately!
Electrical arc
damage
Cylinder is damaged. Should be taken out of service immediately!

8. Cylinder should be in storage protected from damage and not
laying on the ground regardless if it is full or empty

9. Forklift
1. Cylinders laying on the ground and improperly stored
2. Subject to damage from forklift operation in vicinity

10. 1. Feed line exposed to damage/leak that could cause a fire/explosion
2. Tripping Hazard

11. 1. Inadequate housekeeping
2. Valve caps should be installed.

12. Unsecured acetylene cylinder 2. Exposed to damage

13. Unsecured cylinders

14. Regulator left pressurized after use

15. Improper Storage

16. Tie Off?

17. Cylinders not
Secured properly

18. Free standing
cylinders
Exposed to damage
From construction
Activities in area

19. What a pressurized
Container can do
When the right amount
of heat is applied.

20. How not to blow yourself up
Or, the importance of using flashback
arrestors on oxy-acetylene carts and
keeping spark producing activities
Away From You (min 35 ft.).

21. An Ironworker crew was modifying a temporary structural steel bridge
using an Oxygen/Acetylene torch setup on a cart, a portable welder,
and a grinder. Apparently the Acetylene hose developed a leak and
ignited during the grinding operation (Monday June 18, 2001)

22. The torch setup was not equipped with a “flashback” arrestor
check valve and the fire traveled through the hose into the
compressed cylinder.
All Oxygen/Acetylene setups must
have a “Flashback” arrestor check
valve at the regulators, NOT the
torch head, to prevent this type
of occurrence. This little device would
have prevented this fire.

23. 30 CFR § 56.4600 Extinguishing equipment.
WELDING/CUTTING/COMPRESSED GASES (a) When welding, cutting, soldering, thawing, or bending
(1) With an electric arc or with an open flame where an electrically conductive extinguishing agent could create an electrical hazard, a multipurpose dry-chemical fire extinguisher or other extinguisher with at least a 2-A:10-B:C rating shall be at the worksite.
(2) With an open flame in an area where no electrical hazard exists, a multipurpose dry-chemical fire extinguisher or equivalent fire extinguishing equipment for the class of fire hazard present shall be at the worksite.

24. 30 CFR § 56.4601 Oxygen cylinder storage.
Oxygen cylinders shall not be stored in rooms or areas used or designated for storage of flammable or combustible liquids, including grease.

25. 30 CFR § 56.4602 Gauges and regulators.
Gauges and regulators used with oxygen or acetylene cylinders shall be kept clean and free of oil and grease.

26. 30 CFR §
Closure of valves.
To prevent accidental release of gases from hoses and torches attached to oxygen and acetylene cylinders or to manifold systems, cylinder or manifold system valves shall be closed when (a) The cylinders are moved; (b) The torch and hoses are left unattended; or (c) The task or series of tasks is completed.

27. 30 CFR §
Protective equipment or clothing for welding, cutting, or working with molten metal.
Protective clothing or equipment and face shields, or goggles shall be worn when welding, cutting, or working with molten metal.

28. 30 CFR § 56.16005 Securing gas cylinders.
Compressed and liquid gas cylinders shall be secured in a safe manner.

29. 30 CFR § 56.16006 Protection of gas cylinder valves.
Valves on compressed gas cylinders shall be protected by covers when being transported or stored, and by a safe location when the cylinders are in use.