welding and cutting safety - oshacademy
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Welding and Cutting Safety
Welding and Cutting
Objectives
Describe welding safety requirements for:
Eye protection
Protective clothing
Fire Prevention Requirements
Ventilation Safety Requirements
Electrical Hazard Prevention Requirements
Hazard Statistics
An estimated 562,000 employees are at risk for
exposure to chemical and physical hazards of
welding, cutting and brazing.
For the construction industry, welders flash (burn
to the eyes) accounts for 5.6% of all
construction eye injuries (2).
Hazard Statistics
Fifty-eight deaths from welding and cutting
incidents, including explosions, electrocutions,
asphyxiation, falls and crushing injuries were
reported by the Bureau of Labor Statistics every
year.
Health Hazards
There are numerous health hazards associated with exposure to fumes, gases and ionizing radiation formed or released during welding, cutting and brazing, including:
Heavy metal poisoning,
Lung cancer,
Metal fume fever,
Flash burns, and others.
Health Hazards
FUMES MAY PRODUCE
METAL FUME FEVER
SYMPTOMS:
Respiratory disturbances
Infection - Influenza
Fever - Acute Bronchitis
Pneumonia - Chills, Shivering,
Trembling, Nausea, Vomiting
Welding and Cutting General Requirements
Welders, cutters, and their supervisors shall be trained in the safe operation of the equipment, safe welding/cutting practices, and welding/cutting respiratory and fire protection.
10.A.01
Shielding
Arc welding and cutting operations shall be shielded by noncombustible or flameproof screens that will protect employees and other persons working in the vicinity from the direct rays of the arc, sparks, molten metal, spatter, and chipped slag.
10.A.04
Shielding
Is this an acceptable welding screen to protect workers, watchers and the public?
Use Protective Clothing and Equipment
Welders should consider using appropriate protective clothing which should include:
Shield or helmet with a filtered lens;
Fire resistant gloves; a leather apron;
Boots;
Leather spats;
Felt skull-cap or beret and preferably overalls.
Volatile combination of heat and gas
Before heat is applied to a drum, container, or
hollow structure, a vent or opening shall be
provided for the release of any built-up
pressure generated during the application of
heat.
10.A.08
Eye Safety Shield
Flameproof Skullcap
Helmet with Filter Lens
No Pockets
Full Sleeves Fire Protection Gauntlet Gloves
No Cuffs
Safety Shoes
Clean Fire Resistant Clothing
Collar Buttoned
Leather Apron or Shirt Outside Trousers
Welding and Cutting PPE
Protective Eye Equipment
Worn during all welding operations
Safety glasses and a head shield
Helmet equipped with a suitable filter glass to protect against the intense ultraviolet and infrared rays.
Arc-Welding
• Non-combustible welding screen to protect others in the vicinity of the welding
Welding and Cutting PPE
Welder wearing eye shield without a hard hat.
Non-compliant
Welding and Cutting PPE
Protective Clothing Woolen instead of cotton
Free from oil
Sleeve and collars buttoned
No cuffs on trousers
Capes or shoulder covers made of leather or other suitable materials
Flame-proof gloves
Welding in Confined Spaces
In confined spaces, local mechanical ventilation and personal respiratory protection sufficient to maintain exposures to within acceptable limits shall be used.
10.B.05.a
Fire Protection
Before welding or cutting operations, survey area for: Combustible
Materials
Potential Explosive Atmospheres
Oxygen Enriched Atmospheres
10.C.02
General ventilation to maintain welding smoke and fumes within safe limits
When welding in confined spaces mechanical ventilation or local exhaust
If ventilation blocks access/egress to confined space, air line and attendant required
Ventilation & Protection
When welding near
walls, partitions,
ceilings or roofs of
combustible
construction, fire
resistant guards
shall be provided to
prevent ignition.
Fire Protection
10.C.08
Before welding or cutting drums, tanks, or other
containers and equipment that have contained
hazardous materials, the containers shall be
thoroughly cleaned in accordance with NFPA 326
and ANSI/AWS F4.1.
Completely fill with water before
proceeding, or
Thoroughly clean, ventilate, and TEST!
Fire Protection
10.C.11
Hoses
Welding Hose
Not more than four of every twelve inches covered with tape for fuel and oxygen hoses taped together
Fuel hose inspected prior to each shift
Defective hose removed from service
Torches
Clogged tips cleaned
with suitable devices
Torches inspected prior
to each shift
Torches lit by strikers or
other approved methods
No matches!
Not off of hot work!
10.D.04
Arc Welding
Manual electrode holders must be designed for
that purpose and capable of carrying the
maximum rated electrode current
Only fully insulated holders to contact hands
10.E.02
Arc welding cables completely insulated and flexible type
Free of splice minimum ten feet from electrode cable end
Cables in need of repair not allowed
Arc Welding
10.E.03
Ground return cables must have sufficient
current carrying capacity for maximum voltage
No grounding on pipelines containing gasses or
flammable liquid
Arc Welding
Always shield operations with flameproof
screens to protect employees eyes
Arc Welding
10.E.12
Welding and Cutting
In summary Wear eye protection
Wear protective clothing
Fire Protection Controls
Provide ventilation in confined or enclosed spaces
Protect workers, watchers, and public from the electrical hazards of arc-welding