Expect more OSHA inspections for silica enforcement in 2024
Did you know that nearly 2.3 million people in the U.S. are exposed to silica at work?
OSHA has previously announced its intention to step up silica enforcement in the stone fabrication and installation industries.
A federal memorandum published on September 22, 2023 established a new initiative for OSHA inspectors to conduct enhanced enforcement and compliance assistance efforts in the following identified focus industries:
1) Cut Stone and Stone Product Manufacturing; and
2) Brick, Stone, and Related Construction Material Merchant Wholesalers.
Increased inspections are the primary focus
The primary focus of this initiative is to prioritize OSHA inspection activity in workplaces where workers are typically exposed to high levels of silica. The goal is to identify hazards and ensure prompt abatement.
This memorandum applies to Federal OSHA inspections in OSHA Regions 1 through 8, which are the regions with the highest concentration of establishments in the targeted industry sectors. Programmed inspections will be prioritized in the two focus industries listed above.
This initiative requires each Area Office in Regions 1 through 8 to complete a minimum of five programmed inspections of establishments working with engineered stone within 12 months of the September 22, 2023 initiative date.
We are now halfway through this new inspection initiative. Regional offices that haven’t yet increased their emphasis on controlling silica exposure will start to do so soon.
Additionally, each affected Regional Office shall send their findings to the federal Office of Health Enforcement to review their enforcement and outreach activities under this initiative.
This includes an analysis of whether the targeting efforts were successful at identifying the establishments with high silica exposures, and information about the types and quality of controls implemented.
The hazards of respirable crystalline silica
Crystalline silica is a common mineral found in the earth's crust. Materials like sand, stone, concrete, and mortar contain crystalline silica. It is commonly used to make products such as glass, pottery, ceramics, bricks, and artificial stone.
Workers who inhale these very small crystalline silica particles are at increased risk of developing serious silica-related diseases, including:
- Silicosis, an incurable lung disease that can lead to disability and death;
- Lung cancer;
- Chronic obstructive pulmonary disease (COPD); and
- Kidney disease.
Recent studies and occupational exposure reports
In 2015, OSHA published its first Hazard Alert related to worker exposure to silica during counter top manufacturing, finishing, and installation.
Additionally, the Centers for Disease Control and Prevention (CDC) published a study in its Morbidity and Mortality Weekly Report (MMWR) in 2019, where eighteen cases of silicosis, including two fatalities, were reported among engineered stone fabrication workers in four states.
On July 24, 2023, a study published by JAMA Network on Silicosis Among Immigrant Engineered Stone (Quartz) Countertop Fabrication Workers in California described 52 male patients who were diagnosed with silicosis caused by occupational exposure to respirable silica dust from engineered stone. Twenty of the patients had advanced disease (progressive massive fibrosis), 11 were referred for lung transplants, and 10 died.
The JAMA Network study noted that exposure to higher silica dust levels can cause silicosis to occur in acute and accelerated forms over shorter periods of time, as observed among many of the patients in the study with a primary occupation of stone counter top fabricator and who regularly worked with engineered stone.
The Bureau of Labor Statistics (BLS) reports that there are an estimated 8,694 establishments and 96,366 employees in the stone fabrication industry in the United States, as of 2018.
OSHA’s requirements for general industry employers
Employers in the stone fabrication and installation industries fall under OSHA’s general industry requirements.
The standards on Respirable Crystalline Silica require employers to:
- Assess employee exposures to silica if it may be at or above an action level of 25 µg/m3 (micrograms of silica per cubic meter of air), averaged over an 8-hour day;
- Protect workers from respirable crystalline silica exposures above the permissible exposure limit (PEL) of 50 µg/m3, averaged over an 8-hour day;
- Limit workers' access to areas where they could be exposed above the PEL;
- Use dust controls to protect workers from silica exposures above the PEL;
- Provide respirators to workers when dust controls cannot limit exposures to the PEL;
- Use housekeeping methods that do not create airborne dust, if feasible;
- Establish and implement a written exposure control plan that identifies tasks that involve exposure and methods used to protect workers;
- Offer medical exams - including chest X-rays and lung function tests - every three years for workers exposed at or above the action level for 30 or more days per year;
- Train workers on work operations that result in silica exposure and ways to limit exposure; and
- Keep records of exposure measurements, objective data, and medical exams.
Key to remember: OSHA inspectors will continue to conduct enhanced enforcement and compliance assistance for general industry employers in the stone fabrication and installation industries. The purpose of these inspections is to identify hazards and ensure prompt abatement.