Government Safety Regulations

RSS

TLVs® and BEIs® are often recognized as “safe levels” for worker exposures to chemical substances and physical agents. Proper application of TLVs® and BEIs® are essential to today’s practice of industrial hygiene.

Crystalline silica is one of the most common elements on the planet, just behind oxygen. About 2.3 million workers are exposed to it in their workplace. It’s about 100 times smaller than sand and can be found on construction sites in building materials such as concrete, block, stone, sand, and mortar.

Crystalline silica is an abundant natural material found in soil, stone and sand. It is also present in many construction materials such as brick, mortar and concrete. It becomes respirable when any of the afore-mentioned materials are cut or broken down into fine particles.

Crystalline silica is one of the most common minerals found worldwide in the earth’s crust. It is frequently used in many industrial processes such as mining, quarrying and stone-cutting. Breathing air contaminated with crystalline silica particles can cause serious respiratory and lung diseases.

OSHA estimates some two million construction employees are exposed to respirable crystalline silica in more than 600,000 workplaces across the country. To comply, companies need to follow multiple steps that aren’t always as easy as they might seem.

The 2018 print edition of NFPA 70E Standard for Electrical Safety in the Workplace® is 104 pages. Updated every three years by the 70E technical committee, this comprehensive standard covers the latest information about the effects of shock, arc flash, arc blast, dc hazards, and developments in electrical design, PPE.