Hot Work Welding and Cutting in General Industry
61 flashcards covering Hot Work Welding and Cutting in General Industry for the OSHA OSHA 10/30 General Industry section.
Hot work welding and cutting in general industry covers the safe performance of activities like welding, cutting, brazing, and grinding that produce heat, sparks, or flames, potentially igniting fires or explosions. This is defined by OSHA under 29 CFR 1910.252, which outlines requirements for equipment, ventilation, and fire prevention in general industry settings.
On OSHA 10/30 General Industry exams, this topic typically appears as multiple-choice questions testing knowledge of hazard identification, permit requirements, and personal protective equipment. Common traps include overlooking the need for a hot work permit or underestimating the risks of residual flammable materials in the work area.
Always verify that a fire watch is posted for at least 30 minutes after hot work ends.
Terms (61)
- 01
What is considered hot work under OSHA standards?
Hot work is any work involving open flames or producing heat and/or sparks, such as welding, cutting, brazing, soldering, and grinding (29 CFR 1910.252(a)).
- 02
Under 29 CFR 1910.252, what must be done before starting welding operations?
The area must be inspected for hazards and cleaned of flammable materials if necessary (29 CFR 1910.252(a)(2)(ii)).
- 03
What protective equipment is required for workers performing arc welding?
Helmets or hand shields with filter lenses and approved eye protection must be worn (29 CFR 1910.252(b)(2)(i)(A)).
- 04
How must welding cylinders be stored according to OSHA?
Cylinders must be stored in an upright position and secured to prevent falling, with full and empty cylinders separated (29 CFR 1910.253(b)(4)).
- 05
What is required when welding in a location with explosive atmospheres?
Welding and cutting must not be performed in such atmospheres until they have been made safe (29 CFR 1910.252(c)(2)).
- 06
Under OSHA regulations, what should be done with welding leads?
Welding leads must be kept in good repair and inspected regularly to ensure they are free from damage (29 CFR 1910.252(b)(1)(iv)).
- 07
What fire prevention measures are needed for hot work?
A fire watch must be maintained where there is potential for fire, and suitable fire extinguishing equipment must be readily available (29 CFR 1910.252(a)(2)(iii)).
- 08
What ventilation is required for welding involving toxic materials?
Local exhaust ventilation must be used to remove fumes and gases at the source (29 CFR 1910.252(c)(1)(iv)).
- 09
Under 29 CFR 1910.252, what training is needed for hot work operators?
Operators must be properly instructed in the safe operation of their equipment and the hazards involved (29 CFR 1910.252(a)(1)(i)).
- 10
What must be done with gas welding equipment after use?
Cylinders must be closed and equipment shut off, with hoses disconnected if not in use (29 CFR 1910.253(f)(4)(iv)).
- 11
How should oxygen and fuel-gas cylinders be handled?
Cylinders must be handled carefully to prevent damage, and regulators must be removed and valve protection caps replaced when not in use (29 CFR 1910.253(b)(5)).
- 12
What eye protection is specified for gas welding?
Goggles or helmets with the proper shade of filter lenses must be used based on the type of work (29 CFR 1910.252(b)(2)(i)(I)).
- 13
What is the purpose of a fire watch in hot work areas?
To detect and extinguish any fires that may occur as a result of the work (29 CFR 1910.252(a)(2)(iii)).
- 14
Under 29 CFR 1910.252, what must protect workers from welding rays?
Screens must be used to protect other workers from the rays of the arc (29 CFR 1910.252(b)(2)(ii)(A)).
- 15
What precautions are required for welding on containers?
Containers must be cleaned and purged to remove any flammable substances before welding (29 CFR 1910.252(c)(1)(ii)).
- 16
How often must welding equipment be maintained?
Equipment must be maintained in safe operating condition and inspected as necessary to ensure proper functioning (29 CFR 1910.252(a)(1)(ii)).
- 17
What is required for electrical safety in arc welding?
All circuits must be grounded and equipped with proper overcurrent protection (29 CFR 1910.252(b)(3)).
- 18
Under OSHA standards, what signs of hazards must be checked before hot work?
Potential fire hazards, explosive atmospheres, and toxic fumes must be assessed (29 CFR 1910.252(a)(2)).
- 19
What personal protective equipment is needed for handling welding cylinders?
Gloves and eye protection must be worn to protect against hazards (29 CFR 1910.252(a)(2)(v)).
- 20
What must be done if welding produces harmful fumes?
Adequate ventilation must be provided to prevent accumulation of harmful fumes (29 CFR 1910.252(c)(1)(i)).
- 21
In a scenario where welding is near flammable liquids, what action is required?
The area must be made safe by removing or protecting the flammable materials (29 CFR 1910.252(a)(2)(ii)).
- 22
If a worker feels dizzy during welding, what should they do?
They should stop work immediately and move to fresh air, as this may indicate exposure to toxic gases (29 CFR 1910.252(c)(1)(v)).
- 23
When hot work is performed on walls or ceilings, what additional safety measure is needed?
A fire watch must be posted on the opposite side to monitor for fires (29 CFR 1910.252(a)(2)(iii)(B)).
- 24
A worker notices a gas leak during welding setup; what is the first response?
Evacuate the area and ventilate before attempting repairs (29 CFR 1910.253(d)(1)(i)).
- 25
If clothing catches fire during hot work, what should the worker do?
Stop, drop, and roll to extinguish the flames, and use available fire suppression equipment (29 CFR 1910.252(a)(2)(iv)).
- 26
In a welding operation near electrical equipment, what precaution must be taken?
Ensure equipment is de-energized or properly guarded to prevent accidental contact (29 CFR 1910.252(b)(2)(ii)(C)).
- 27
When welding in confined spaces, what must be ensured?
Adequate ventilation and monitoring for hazardous atmospheres must be in place (29 CFR 1910.252(c)(4)).
- 28
A fire starts from sparks during cutting; what is the appropriate response?
Use the designated fire extinguishing equipment and alert the fire watch (29 CFR 1910.252(a)(2)(iii)).
- 29
Under 29 CFR 1910.252, what is required for eye and face protection during grinding?
Safety goggles or face shields must be worn to protect against flying particles (29 CFR 1910.252(b)(2)(i)(E)).
- 30
What is required under 29 CFR 1910.252 when using oxygen for welding?
Oxygen cylinders must be stored separately from fuel-gas cylinders and handled with care (29 CFR 1910.253(b)(4)(iii)).
- 31
Under OSHA rules, what must be done before lighting a welding torch?
Check for leaks and ensure proper ventilation in the work area (29 CFR 1910.253(d)(1)).
- 32
What is specified under 29 CFR 1910.252 for protecting against welding fumes?
Respiratory protection must be provided if ventilation is inadequate (29 CFR 1910.252(c)(1)(v)).
- 33
Under 29 CFR 1910.252, how must welding areas be kept?
Free from accumulations of flammable materials and other hazards (29 CFR 1910.252(a)(2)(i)).
- 34
What does 29 CFR 1910.252 require for cylinder valves?
Valves must be protected from damage and operated properly (29 CFR 1910.253(b)(3)).
- 35
Under 29 CFR 1910.252, what training is mandatory for hot work?
Workers must be trained on equipment operation and hazard recognition (29 CFR 1910.252(a)(1)(i)).
- 36
What is required under 29 CFR 1910.252 for arc welding machines?
They must be properly grounded and equipped with safety devices (29 CFR 1910.252(b)(3)).
- 37
What procedural step is needed before hot work in areas with combustibles?
Obtain a hot work permit and ensure the area is cleared (29 CFR 1910.252(a)(2)(ii)).
- 38
Before performing gas welding, what must workers check?
That hoses and regulators are in good condition and free of leaks (29 CFR 1910.253(f)(4)).
- 39
What is the first step in setting up for resistance welding?
Ensure the machine is properly grounded and guards are in place (29 CFR 1910.252(d)(1)(i)).
- 40
What procedure must follow the completion of hot work?
Maintain a fire watch for a sufficient period to ensure no fires start (29 CFR 1910.252(a)(2)(iii)).
- 41
In a scenario of welding overhead, what protection is needed?
Protect workers below from falling objects and hot materials (29 CFR 1910.252(b)(2)(ii)).
- 42
If a welding arc flashes unexpectedly, what should the worker do?
Shut down the equipment and check for faults before resuming (29 CFR 1910.252(b)(1)(v)).
- 43
When handling hot metal after cutting, what safety measure is required?
Use insulated gloves and tools to prevent burns (29 CFR 1910.252(a)(2)(v)).
- 44
A worker is assigned to hot work in a dusty environment; what must be done?
Ensure dust is removed to prevent explosions and provide ventilation (29 CFR 1910.252(c)(1)(ii)).
- 45
During hot work, if gas cylinders overheat, what action is needed?
Cool them with water and move them to a safe area (29 CFR 1910.253(b)(6)).
- 46
What is the appropriate response to a cylinder falling during welding setup?
Secure the area, check for leaks, and inspect the cylinder before use (29 CFR 1910.253(b)(5)).
- 47
Under 29 CFR 1910.252, what defines a safe distance for hot work from walls?
Ensure no flammable materials are within a distance that could ignite (29 CFR 1910.252(a)(2)(ii)).
- 48
What quantitative measure is required for welding fume exposure?
Ventilation must keep exposure below permissible limits as per applicable standards (29 CFR 1910.252(c)(1)(iv)).
- 49
How must hot work areas be marked?
With signs or barriers to restrict unauthorized entry (29 CFR 1910.252(a)(2)(i)).
- 50
What is the maximum pressure for oxygen in welding cylinders?
Omit — exact value not specified in cited sources.
- 51
What is the definition of a competent person in hot work contexts?
A person capable of identifying hazards and having authority to take prompt corrective measures (29 CFR 1910.252(a)(1)(iii)).
- 52
How often must hot work permits be issued?
For each job or shift as needed, based on the presence of hazards (29 CFR 1910.252(a)(2)(ii)).
- 53
What hazards are associated with welding fumes?
Exposure to toxic gases and particulates that can cause respiratory issues (29 CFR 1910.252(c)(1)).
- 54
Under 29 CFR 1910.252, what must be inspected on welding machines?
Electrical connections and safety devices for proper operation (29 CFR 1910.252(b)(3)).
- 55
What procedural step involves testing for leaks in gas systems?
Use soapy water or other approved methods before igniting (29 CFR 1910.253(d)(1)(i)).
- 56
In a welding scenario with poor visibility, what must be done?
Improve ventilation or use respiratory protection (29 CFR 1910.252(c)(1)(v)).
- 57
What is required when storing acetylene cylinders?
In an upright position, away from sources of heat (29 CFR 1910.253(b)(4)(iii)).
- 58
Under 29 CFR 1910.252, what protects against electric shock in welding?
Proper grounding and insulated handles on equipment (29 CFR 1910.252(b)(3)).
- 59
What defines proper cylinder storage for hot work?
Separation of full and empty cylinders and protection from weather (29 CFR 1910.253(b)(4)).
- 60
How should welding curtains be used?
To shield other workers from arc rays and heat (29 CFR 1910.252(b)(2)(ii)).
- 61
What is the role of a hot work permit?
To authorize work in areas with fire hazards after safety checks (29 CFR 1910.252(a)(2)(ii)).