welding and cutting for construction. welding safety program guidelines person responsible...
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Welding and Cutting for construction
Welding safety program guidelines
• Person responsible
• Accountability and enforcement
• Job hazard assessment
• Special procedures
1a
Welding safety program guidelines
• Engineering controls
• Administrative controls
• Personal protective equipment
1b
Welding safety program guidelines
• Equipment inspection/maintenance
• "Near miss" investigation
1c
Compressed gas cylinders hazards
• Valve protection caps
• Hoisting cylinders
• Moving cylinders
2a
Compressed gas cylinders hazards
• Transporting by powered vehicles
• Cylinders in use
• Closed cylinder valve
2b
Storing compressed gas cylinders
• Upright position
• Oxygen cylinders separated
• 20 foot rule
• CGA Pamphlet P-1-1965
3a
Placing compressed gas cylinders
• Fire prevention
• Electrical protection
• Valve end up
• Confined space restriction
4a
Treatment of compressed gas cylinders
• Do not: – Mix gases in a cylinder – Refill a cylinder – Use for purposes not intended – Use damaged or defective
cylinders
5a
Training employees using fuel gas
• Reduce the pressure via a regulator
• Cracking the valve
• Open slowly
• Close valve/release gas
6a
Cylinder leaks
• Immediately discontinue use
• Properly tag
• Remove from the work area
7a
Fuel gas and oxygen manifolds
• Manifolds correctly marked
• Safe, well ventilated locations
• Hose connections keep free of grease and oil
8a
Fuel gas and oxygen hose
• Easily distinguishable from each other
• Not interchangeable
• Parallel sections taped together
• Inspect before using
9a
Fuel gas and oxygen hose
• Remove defective hose from service
• Test to twice the normal pressure
• Keep out of passageways
9b
Torches
• Clean clogged torch tip openings
• Inspect before using
• Don’t use defective torches
• Use friction lighters
10a
Housekeeping
• Keep free from oil or greasy substances
• Avoid directing oxygen flow
11a
Manual electrode holders
• Specifically designed
• Fully insulated
12a
Welding and cutting cables
• Completely insulated, flexible type
• Handle maximum current requirements
13a
Welding and cutting cables
• Do not use damage cable
• Worn cable to be protected
• Connecting or splice cable
13b
Training for arc welding and cutting
• Remove electrodes if left unattended
• Avoid electric shock
• Open power supply switch
14a
Training for arc welding and cutting
• Report defective equipment
• Provide supply circuit disconnect
• Provide switch or circuit breaker
14b
Five common arc-welding processes
• Shielded metal (SMAW)
• Gas metal (GMAW)
• Gas tungsten (GTAW)
• Flux cored (FCAW)
• Submerged (SAW)
15a
Welding and fire prevention
• Move object to safe location
• Move fire hazards to safe place
• Confine the heat, sparks, and slag
16a
Welding and fire prevention
• Avoid flammable compounds
• Fire extinguishing equipment
16b
Fire watchers
• Assign additional personnel
• Instruct in the specific hazards
• Firefighting equipment is used
16c
Drums and containers
• Keep closed if full
• Move empty containers to safe area
• Clean containers if necessary
• Open vent during the application of heat
16d
Mechanical ventilation
• General mechanical ventilation systems
• Local exhaust systems
• Oxygen restrictions
17a
Confined spaces
• Use of air line respirators
• Communication
• Emergency rescue
• Pre-planed rescue procedure
18a
General welding, cutting, and heating
• Absence of hazards conditions
• Absence of toxic materials
• No special requirements
• Eye protective equipment needed
19a
Preservative coatings
• Testing by a competent person
• Determine flammability
• Remove from welding area
20a
Physical hazards of welding and cutting
• Ultraviolet radiation (UV)
• Infrared radiation (IR)
• Intense visible light
21a