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Sandblasting Safety Procedures

Principal Author / Publisher:Safetyhow Admin
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Sandblasting is a technique in which steam or air blasts dry sand onto a surface in an effort to prepare or clean it. Workers, performing the technique, are at risk of exposure to the harmful effects of various toxic substances, including zinc or lead, when sandblasting existing coatings from surfaces. They are also exposed to the hazards of silica sand (the sandblasting agent), including silicosis---a disease caused by inhaling large quantities of silica (silicon dioxide). Most of the hazards associated with sandblasting can be eliminated if appropriate safety measures and procedures are enforced.

Protective Gear

The NIOSH (National Institute for Occupational Safety and Health) recommends that workers wear appropriate protective gear when dealing with sandblasting equipment. Eye protection, respiratory protection, protective shoes, clothing and gauntlet gloves are some of the most important sandblasting safety accessories. Air-supplied, sealed helmets are recommended for the process. These protect workers from inhaling microscopic dust particles. Sandblasting equipment tend to make considerable noise. Appropriate ear protection (ear-mitts and/or earplugs) suitably protect delicate eardrums and ensure they do not get damaged in the process.



Isolated Environment

The Centers for Disease Control and Prevention (CDC) recommend conducting sandblasting in isolated cabinets and using enclosed sandblasting machines. These precautionary procedures allow operators to stand at a safe distance from the abrasive dust and manipulate equipment with the arms and hands in gloved armholes. A sandblasting site must be kept clear of all personnel and other unprotected individuals besides those operating the equipment.

Adequate Ventilation

The CDC advizes that all structures and areas where sandblasting is conducted to be appropriately ventilated. OSHA (United States Occupational Safety and Health Administration) recommends general exhaust, local exhaust, replacement air, HVAC (heating, ventilating and air-conditioning systems) and air recirculatory methods to form the primary backbone of sandblasting ventilation systems.

Ample Preparation and Clean Up

All sandblasting equipment and gear must be thoroughly inspected before use. Remote controls on the blasting equipment must be tested and their pop-up valve must be suitably aligned. Workers must ensure air supply and helmet filters are in perfect working condition and the sandblasting site is aptly ventilated. An area must be completely cleaned of all dust and sand particles after the process.

Equipment Safety

Sandblasting must only be conducted with safe and grounded sandblasting machines--also called sandblasters. Workers must consult manufacturer instructions and precautions before operating sandblasting power tools. All equipment and gear must be regularly inspected and maintained.



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