OSH Answers Fact Sheets
Easy-to-read, question-and-answer fact sheets covering a wide range of workplace health and safety topics, from hazards to diseases to ergonomics to workplace promotion. MORE ABOUT >
What type of PPE is available when welding?
The chart below summarizes the types of personal protective equipment that can be used when welding.
|Welding - Personal Protective Equipment|
|Eyes and face||Welding helmet, hand shield, or goggles||Protects from: |
|Lungs (breathing)||Respirators||Protects against: |
|Exposed skin (other than feet, hands, and head)||Fire/Flame resistant clothing and aprons||Protects against: |
|Ears - hearing||Ear muffs, ear plugs||Protects against: |
|Feet and hands||Boots, gloves||Protects against: |
Why is eye protection important?
Eye injury can occur from the intense light and radiation that a welding arc can produce. Eye injury can also occur from hot slag that can fly off from the weld during cooling, chipping or grinding.
- Protect your eyes from welding light by wearing a welder's helmet fitted with a filter shade that is suitable for the type of welding you are doing.
- ALWAYS wear safety glasses with side shields or goggles when chipping or grinding a work piece if you are not wearing a welding helmet.
What type of eye and face protection is appropriate for my welding task?
The various types of eye protection are broken down into classes in the Canadian Standards Association (CSA) standard Z94.3.1 "Selection, use, and care of protective eyewear". Each class has a specific use that it has been designed for. Common protectors for welding operations are listed below:
- Class 2C - direct non-ventilated goggles with radiation protection
- Class 3 - welding helmets
- Class 4 - hand shields
- Class 5C - non-rigid helmets with radiation protection
- Class 6B - faceshields with radiation protection
- Class 7B - respirator facepiece with radiation protection
The following operations require full face protection from either a welding helmet or a hand shield:
- arc welding,
- plasma arc cutting, gouging or welding, and
- air carbon arc cutting.
For gas cutting, welding, or brazing, the intensity of the light is much less than from arc welding, cutting or gouging processes. Lighter shade filter lenses can be used with goggles in place of a helmet.
More information can be found in the OSH Answers on Safety glasses and face protectors.
What are the various components of welding hand shields and helmets?
Hand shields or helmets provide eye protection by using an assembly of components:
- Helmet shell - must be opaque to light and resistant to impact, heat and electricity.
- Outer cover plate made of polycarbonate plastic which protects from UV radiation, impact and scratches.
- Filter lens made of glass containing a filler which reduces the amount of light passing through to the eyes. Filters are available in different shade numbers ranging from 2 to 14. The higher the number, the darker the filter and the less light passes through the lens.
- Clear retainer lens made of plastic prevents any broken pieces of the filter lens from reaching the eye.
- Gasket made of heat insulating material between the cover lens and the filter lens protects the lens from sudden heat changes which could cause it to break. In some models the heat insulation is provided by the frame mount instead of a separate gasket.
What else should you know about eye protection?
- Choose a tight fitting helmet to help reduce light reflection into the helmet through the space between the shell and the head.
- Wear the helmet correctly. Do not use it as a hand shield.
- Protect the shade lens from impact and sudden temperature changes that could cause it to crack.
- Use a cover lens to protect the filter shade lens. Replace the cover lens if it gets scratched or hazy.
- Make sure to replace the gasket periodically if your helmet uses one.
- Replace the clear retaining lens to protect your eyes from broken pieces.
- Clean lenses periodically.
- Discard pitted or damaged lenses.
What should you know about filter shade selection?
For Arc welding, the correct filter shade is selected according to the welding process, wire diameter, and operating current. The table below gives the correct shade numbers for different situations.
- ALWAYS use suggested shade numbers instead of minimum shades
- Provide additional task lighting that suits welders' needs.
- Use the same shade as the welder's if you are directly observing the welding arc.
- Do not use gas welding goggles for arc welding.
- Do not substitute modified glasses, sunglasses, smoked plastic or other materials for proper welding lenses.
The correct shade numbers for oxyfuel cutting are shown in the table below.
Can you wear contact lenses when welding?
The CSA Standard W117.2 states that contact lenses should not be worn by welders and welding personnel. Contact lenses do not provide protection from ultraviolet radiation and flying objects. All workers in proximity to welding procedures must wear appropriate eye protection according to the circumstances. The OSH Answers document Contact Lenses at Work discusses how dust particles or chemicals can irritate the eyes.
Note that in Canada, Prince Edward Island's Occupational Health and Safety Act Regulations (E.C. 180/87) Section 45.11 specifically bans wearing contact lenses while welding.
What measures can you use for skin protection from welding radiation?
- Wear tightly woven work-weight fabrics to keep UV radiation from reaching your skin.
- Button up your shirt to protect the skin on the throat and neck.
- Wear long sleeves and pant legs.
- Cover your head with a fabric cap to protect the scalp from UV radiation.
- Protect the back of your head by using a hood.
- Protect your face from UV radiation by wearing a tight-fitting, opaque welder's helmet.
- Make sure that all fabric garments are resistant to spark, heat and flame. Keep the fabrics clean and free of combustible materials that could be ignited by a spark.
What should you know about using respirators when welding?
Respiratory protection is needed when ventilation is not sufficient to remove welding fumes or when there is risk of oxygen deficiency. Select and use respirators in compliance with your workplace regulation. Seek expert advice and initiate a proper respiratory protection program.
For more information on selecting the appropriate respirators, see the OSH Answers on Respirator Selection.
The process of selecting appropriate respiratory protection is outlined in Canadian Standards Association (CSA) standard Z94.4 and American National Standards Institute (ANSI) Z88.2 standard "Respiratory Protection".
What are some tips to know when using protective clothing?
- Wear clothing made from heavyweight, tightly woven, 100% wool or cotton to protect from UV radiation, hot metal, sparks and open flames. Flame retardant treatments become less effective with repeated laundering.
- Keep clothing clean and free of oils, greases and combustible contaminants.
- Wear long-sleeved shirts with buttoned cuffs and a collar to protect the neck. Dark colours prevent light reflection.
- Tape shirt pockets closed to avoid collecting sparks or hot metal or keep them covered with flaps.
- Pant legs must not have cuffs and must cover the tops of the boots. Cuffs can collect sparks.
- Repair all frayed edges, tears or holes in clothing.
- Wear high top boots fully laced to prevent sparks from entering into the boots.
- Use fire-resistant boot protectors or spats strapped around the pant legs and boot tops, to prevent sparks from bouncing in the top of the boots.
- Remove all ignition sources such as matches and butane lighters from pockets. Hot welding sparks may light the matches or ignite leaking lighter fuel.
- Wear gauntlet-type cuff leather gloves or protective sleeves of similar material, to protect wrists and forearms. Leather is a good electrical insulator if kept dry.
- Direct any spark spray away from your clothing.
- Wear leather aprons to protect your chest and lap from sparks when standing or sitting.
- Wear layers of clothing. To prevent sweating, avoid overdressing in cold weather. Sweaty clothes cause rapid heat loss. Leather welding jackets are not very breathable and can make you sweat if you are overdressed.
- Wear a fire-resistant skull cap or balaclava hood under your helmet to protect your head from burns and UV radiation.
- Wear a welder's face shield to protect your face from UV radiation and flying particles.
- Do not wear rings or other jewellery.
- Do not wear clothing made from synthetic or synthetic blends. The synthetic fabric can burn vigorously, melt and produce bad skin burns.
Although every effort is made to ensure the accuracy, currency and completeness of the information, CCOHS does not guarantee, warrant, represent or undertake that the information provided is correct, accurate or current. CCOHS is not liable for any loss, claim, or demand arising directly or indirectly from any use or reliance upon the information.