Table of Contents
- 1 How far away should highly combustible materials?
- 2 What is considered a safe distance between welding and flammable materials?
- 3 What is the minimum safe distance from heat source?
- 4 What are the four distinct hazards that must be guarded against when oxy acetylene welding?
- 5 What materials are considered non combustible?
- 6 What is classed as combustible material?
- 7 When is cutting and welding allowed in construction?
- 8 What should you do if you dont have a welding permit?
How far away should highly combustible materials?
The U.S. Occupational Safety and Health Administration (OSHA) and the National Fire Protection Association (NFPA) recommend at least 35 ft (10.7 m) of distance between hot work and flammable vapors.
How far should flammable material be removed from the cutting area?
– Move all combustibles at least 10 metres away from the work site. Otherwise, protect with flame-proofed covers. – Have a fire extinguisher or water and sand available. – After welding/cutting is completed, carefully inspect for sparks and smouldering material before leaving the area.
What is considered a safe distance between welding and flammable materials?
Keep flammable liquids and combustibles at least 11 meters (35 feet) from the hot work area. Use thermal barriers to protect flammable liquids and combustibles that can’t be removed.
How far should combustible material be away from hot work?
For that reason, NFPA 51B establishes a minimum safe distance of 35 feet in all directions from the location of the hot work. In other words, combustible materials must be moved at least 35 feet away from the work to prevent contact with the hot work residue, such as sparks or slag.
What is the minimum safe distance from heat source?
Combustible material must never be stored any closer than 36″ from a heating appliance or electrical light. Items no longer in use should be properly disposed to avoid stacking and accumulation on counters, top of cabinets, floors and desks. When these items are allowed to accumulate, the risk of fire is increased.
What is a Type C fire?
Class C. Class C fires involve energized electrical equipment. Extinguishers with a C rating are designed for use with fires involving energized electrical equipment.
What are the four distinct hazards that must be guarded against when oxy acetylene welding?
Welders need to be protected against heat, sparks, ultraviolet rays, hot slag, fumes and toxic gases.
Does welding melt metal?
As opposed to brazing and soldering, which do not melt the base metal, welding is a high heat process which melts the base material. Typically with the addition of a filler material. Pressure can also be used to produce a weld, either alongside the heat or by itself.
What materials are considered non combustible?
Examples of non-combustible materials include steel, masonry, ceramics and certain insulating materials (such as fiberglass or mineral wool insulation). Gypsum wallboard is considered by the codes to be non-combustible although it does have a thick paper backing that is combustible.
What is the single best thing you can do to protect yourself from welding fumes?
Fumes produced by basic welding of iron or steel can often be blocked by wearing a simple N95 mask such as the 3M 8212 N95 Welding Particulate Respirator or as a step up, an N99 mask such as the Moldex Premium Disposable Welding Respirator. Both of these have exhalation valves to keep the mask cool.
What is classed as combustible material?
A combustible material is a solid or liquid than can be easily ignited and burned. OSHA, DOT, and other federal regulations, apply specific technical definitions to this term. Combustible solids are those capable of igniting and burning. Wood and paper are examples of such materials.
What is the minimum distance to keep electric heater away from flammable materials?
Position the heater at least 3 feet away from flammable materials such as papers, clothing and rugs. Keep heaters out of high-traffic areas, such as doorways, where they can be a tripping hazard. Don’t use extension cords or power strips, as these can overheat and start a fire.
When is cutting and welding allowed in construction?
Cutting or welding shall be permitted only in areas that are or have been made fire safe. When work cannot be moved practically, as in most construction work, the area shall be made safe by removing combustibles or protecting combustibles from ignition sources.
What should you do if your welding is on fire?
Fire Precautions When cutting or welding outside a designated area, remove the work to a safe location free of combustible materials if possible. If the work cannot be moved, clear flammable materials and rubbish from the area for about a 35′ radius.
What should you do if you dont have a welding permit?
(Failure to obtain a permit is not considered an emergency). When cutting or welding outside a designated area, remove the work to a safe location free of combustible materials if possible. If the work cannot be moved, clear flammable materials and rubbish from the area for about a 35′ radius.
How are cylinders kept away from cutting and welding?
Cylinders must be kept far enough away from the cutting and welding operation to be exposed to the sparks and hot slag from the work.