Compressed Gases and Compressed Air Safety
59 flashcards covering Compressed Gases and Compressed Air Safety for the OSHA OSHA 10/30 General Industry section.
Compressed gases and compressed air safety focuses on the hazards of handling, storing, and using pressurized gases like oxygen or acetylene in industrial settings. This topic is defined by OSHA regulations, specifically 29 CFR 1910.101 and related standards, which are core to the OSHA 10/30 Outreach Training for General Industry and Construction.
On practice exams, questions typically appear as multiple-choice scenarios testing identification of risks, such as improper valve handling or incompatible materials, or true/false on storage requirements. A common trap is assuming all gases can be treated the same, leading to errors in selecting the right equipment or ignoring compatibility issues.
Remember to always check for leaks with soapy water before use—a simple step often overlooked in routine tasks.
Terms (59)
- 01
What are the general requirements for handling compressed gas cylinders?
Compressed gas cylinders must be handled carefully to prevent dropping or striking, kept away from electrical welding, and not used as rollers or supports (29 CFR 1910.101).
- 02
Under 29 CFR 1910.101, how should compressed gas cylinders be stored?
Compressed gas cylinders must be stored in a vertical position, secured to prevent tipping, and protected from external heat sources (29 CFR 1910.101(b)).
- 03
What must be done with valve protection caps on compressed gas cylinders?
Valve protection caps must be kept in place and hand-tight except when cylinders are connected for use (29 CFR 1910.101(a)).
- 04
How should empty compressed gas cylinders be marked?
Empty compressed gas cylinders must be marked to identify them as such, for example by marking the valve outlet or using a tag (29 CFR 1910.101(c)).
- 05
What is required when transporting compressed gas cylinders?
Compressed gas cylinders must be transported with valves closed and protected, using a hand truck or similar device to prevent them from being dropped (29 CFR 1910.101(a)).
- 06
Under 29 CFR 1910.101, what precautions are needed for oxygen cylinders?
Oxygen cylinders must be kept away from oil, grease, and other combustible materials to prevent ignition (29 CFR 1910.101 and 1910.104).
- 07
What safety measures apply to acetylene cylinders?
Acetylene cylinders must not be used with pressures exceeding 15 psi gauge pressure, and must be stored and handled to prevent exposure to temperatures above 130°F (29 CFR 1910.102).
- 08
How must regulators on compressed gas cylinders be used?
Regulators must be removed and valve protection caps replaced when not in use, and checked for leaks after attachment (29 CFR 1910.101).
- 09
What is the procedure for a leaking compressed gas cylinder?
A leaking compressed gas cylinder must be removed to a safe place, and if it cannot be repaired, the supplier must be contacted for instructions (29 CFR 1910.101).
- 10
Under 29 CFR 1910.101, what visual inspections are required for compressed gas cylinders?
Compressed gas cylinders must be visually inspected for damage before use, including checking for corrosion, dents, or leaks (29 CFR 1910.101(c)).
- 11
What are the requirements for securing compressed gas cylinders in use?
Compressed gas cylinders in use must be secured in an upright position with a chain or stand to prevent them from falling (29 CFR 1910.101(b)).
- 12
How should compressed air be used in cleaning operations?
Compressed air used for cleaning must be reduced to less than 30 psi when used on exposed parts of the body, and effective chip guarding must be used (29 CFR 1910.242(b)).
- 13
What must be done before connecting a compressed gas cylinder to a system?
Before connecting, ensure the cylinder valve and regulator are compatible, and check for oil or grease contamination (29 CFR 1910.101).
- 14
Under 29 CFR 1910.104, what storage conditions apply to oxygen cylinders?
Oxygen cylinders must be stored separately from fuel-gas cylinders and at least 20 feet away or separated by a half-hour fire wall (29 CFR 1910.104(b)).
- 15
What is required for the storage of full and empty compressed gas cylinders?
Full and empty cylinders must be stored separately to prevent confusion and ensure safety (29 CFR 1910.101(b)).
- 16
How often must compressed gas systems be checked for leaks?
Compressed gas systems must be checked for leaks after installation and periodically thereafter, but specific intervals are not defined; follow manufacturer's instructions (29 CFR 1910.101).
- 17
What actions are needed if a compressed gas cylinder valve is damaged?
If a valve is damaged, the cylinder must not be used and must be removed from service until repaired by the supplier (29 CFR 1910.101).
- 18
Under 29 CFR 1910.101, what labeling is required on compressed gas cylinders?
Compressed gas cylinders must be clearly marked to identify the gas content and include the primary hazards associated with the gas (29 CFR 1910.101(a)).
- 19
What precautions apply when using compressed gases near welding operations?
Compressed gas cylinders must be kept at a safe distance from welding or cutting operations to avoid sparks or heat (29 CFR 1910.101 and 1910.252).
- 20
How should workers handle compressed gas cylinders in confined spaces?
Workers must ensure proper ventilation and follow permit-required confined space procedures when handling compressed gases (29 CFR 1910.101 and 1910.146).
- 21
What is the first step when detecting a gas leak from a cylinder?
The first step is to evacuate the area and notify the supervisor, then follow emergency procedures (29 CFR 1910.101).
- 22
Under 29 CFR 1910.242, what safety devices are needed for compressed air tools?
Compressed air tools must have safety devices to prevent accidental operation and reduce air pressure for cleaning (29 CFR 1910.242).
- 23
What must be done with compressed gas cylinders after use?
After use, close the cylinder valve, release pressure from the regulator, and replace the valve protection cap (29 CFR 1910.101).
- 24
How are compressed gas cylinders protected from falling objects?
Compressed gas cylinders must be stored in areas where they are protected from falling objects or vehicular traffic (29 CFR 1910.101(b)).
- 25
What requirements apply to the use of compressed air for cleaning clothing?
Compressed air must not be used for cleaning clothing worn by the employee due to the risk of injury (29 CFR 1910.242(b)).
- 26
A worker notices a compressed gas cylinder is bulging. What should they do?
The worker should immediately stop using the cylinder, isolate it, and report it to the supervisor for removal from service (29 CFR 1910.101).
- 27
Under 29 CFR 1910.101, what training is needed for handling compressed gases?
Employees must be trained on the safe handling and use of compressed gases as part of hazard communication (29 CFR 1910.101 and 1910.1200).
- 28
What is required for the installation of compressed gas piping systems?
Compressed gas piping systems must be installed to withstand the maximum pressure and be protected from corrosion (29 CFR 1910.101).
- 29
How should regulators be maintained on compressed gas cylinders?
Regulators must be maintained in good condition, free from oil and damage, and inspected regularly (29 CFR 1910.101).
- 30
What storage separation is needed for flammable compressed gases?
Flammable compressed gases must be stored at least 20 feet from other gases or separated by a barrier (29 CFR 1910.101 and 1910.106).
- 31
A compressed gas cylinder falls over. What is the appropriate response?
The worker should secure the cylinder, check for damage, and if damaged, remove it from service immediately (29 CFR 1910.101).
- 32
Under 29 CFR 1910.102, what pressure limits apply to acetylene systems?
Acetylene systems must not exceed 15 psi gauge pressure to prevent decomposition (29 CFR 1910.102).
- 33
What must be done before moving a compressed gas cylinder?
Before moving, close the cylinder valve and remove any regulators or connections (29 CFR 1910.101).
- 34
How are compressed gas cylinders identified if the label is missing?
Cylinders must not be used if the label is missing; they must be returned to the supplier for identification (29 CFR 1910.101).
- 35
What personal protective equipment is recommended for handling compressed gases?
Workers should use appropriate PPE such as gloves and eye protection when handling compressed gases (29 CFR 1910.101 and 1910.132).
- 36
Under 29 CFR 1910.101, what emergency equipment is needed near compressed gas storage?
Emergency equipment like fire extinguishers must be readily available near compressed gas storage areas (29 CFR 1910.101).
- 37
What is the procedure for filling compressed gas cylinders?
Filling must be done by trained personnel using equipment designed for the specific gas, following the supplier's instructions (29 CFR 1910.101).
- 38
How should compressed air lines be protected from contamination?
Compressed air lines must be equipped with filters or traps to prevent oil or water contamination (29 CFR 1910.242).
- 39
A worker is exposed to a compressed gas leak. What should they do?
The worker should move to fresh air, seek medical attention if needed, and report the incident (29 CFR 1910.101 and 1910.1200).
- 40
What regulations cover the use of compressed gases in general industry?
The use of compressed gases is covered under 29 CFR 1910.101 through 1910.111 for various gases (29 CFR 1910 Subpart H).
- 41
Under 29 CFR 1910.104, how must hydrogen cylinders be stored?
Hydrogen cylinders must be stored in well-ventilated areas away from ignition sources and other flammable materials (29 CFR 1910.104).
- 42
What must be checked on a compressed gas cylinder before use?
Check for proper labeling, valve integrity, and absence of damage before use (29 CFR 1910.101).
- 43
How are compressed gas cylinders disposed of?
Empty cylinders must be returned to the supplier for proper disposal or refilling (29 CFR 1910.101).
- 44
What is required for the use of compressed air in pneumatic tools?
Pneumatic tools must have safety devices to control air pressure and prevent accidental startup (29 CFR 1910.242).
- 45
Under 29 CFR 1910.101, what signs are needed for compressed gas areas?
Areas with compressed gases must have appropriate hazard warning signs (29 CFR 1910.101 and 1910.1200).
- 46
What training elements are needed for compressed gas safety?
Training must include hazards of the gas, safe handling procedures, and emergency response (29 CFR 1910.1200).
- 47
How should leaks in compressed gas systems be detected?
Leaks can be detected using soap solution or other approved methods on connections (29 CFR 1910.101).
- 48
A compressed gas cylinder is in a fire. What is the response?
Evacuate the area and let trained personnel handle; cool the cylinder if safe (29 CFR 1910.101).
- 49
What are the rules for using adapters on compressed gas cylinders?
Adapters must not be used unless designed for the specific gas to prevent mixing (29 CFR 1910.101).
- 50
Under 29 CFR 1910.242, what pressure reduction is needed for blow cleaning?
Air pressure must be reduced to less than 30 psi for cleaning with compressed air (29 CFR 1910.242(b)).
- 51
What must be done if a compressed gas regulator malfunctions?
Remove the regulator, tag it out of service, and have it repaired or replaced (29 CFR 1910.101).
- 52
How are compressed gas cylinders protected in storage racks?
Cylinders in racks must be secured to prevent movement and protected from environmental damage (29 CFR 1910.101(b)).
- 53
What is the requirement for venting compressed gas systems?
Venting must be to a safe location away from personnel and ignition sources (29 CFR 1910.101).
- 54
Under 29 CFR 1910.101, who can repair compressed gas cylinders?
Repairs must be performed by the cylinder owner or an authorized representative (29 CFR 1910.101).
- 55
What safety checks are needed for compressed air receivers?
Compressed air receivers must be inspected and tested per the ASME code (29 CFR 1910.169).
- 56
A worker must connect a regulator to a cylinder. What steps follow?
Ensure the connection is secure, open the valve slowly, and check for leaks (29 CFR 1910.101).
- 57
How must compressed gases be handled in high-temperature areas?
Cylinders must be kept away from areas where temperatures exceed 125°F to prevent pressure buildup (29 CFR 1910.101).
- 58
What is required for the labeling of compressed air systems?
Systems must be labeled to indicate the contents and hazards (29 CFR 1910.1200).
- 59
Under 29 CFR 1910.101, what records are needed for compressed gas incidents?
Incidents must be recorded as per OSHA injury and illness reporting requirements (29 CFR 1910.101 and 1904).