Get the lead out! Keeping toxins from following workers home
Whether in its pure form, as a chemical compound, or when combined with other metals, lead is very versatile and can be found lurking in various industries including construction, manufacturing, transportation, trade, agriculture, and recreation. These days it is mostly used in battery manufacturing, but lead is also found in pipes, ammunition, radiators, select plastics, and numerous building materials.
OSHA requires worker protection from lead exposure under general industry (1910.1025), shipyards (1915.1025), and construction (1926.62) regulations. Requirements within these standards include medical surveillance, exposure monitoring, and hygiene protocols.
Who’s being stalked by lead?
The regulations mandate a permissible exposure limit (PEL) of 50 μg/m3 of lead over an eight-hour time-weighted-average for all exposed employees. However, worker protection begins at the action level of 30 μg/m3. At the action level, employers must institute certain compliance initiatives for exposed workers such as blood testing.
Workers can be exposed to lead through inhalation or ingestion of dust and fumes at work. Lead can also wreak havoc when inadvertently absorbed through the skin when handling objects containing lead or touching contaminated surfaces. Common worker exposures to lead can include:
- The production, use, maintenance, recycling, and disposal of lead material and products;
- The removal, renovation, or demolition of structures painted with lead-based paints;
- The installation, maintenance, or demolition of lead pipes and fittings, tanks and radiators, and leaded glass;
- Soldering activities and other work involving lead metal or lead alloys;
- Work with plumbing fixtures, rechargeable batteries, lead bullets, certain plastics, and brass or bronze materials; and
- Firearm use, fishing with lead weights, and recycling of lead-laced products or materials.
There’s no place like a lead-free home
When considering how best to protect workers from lead exposure, safety professionals can utilize the hierarchy of controls. Using this strategy, the most effective way to prevent lead exposure is through elimination or substitution with less toxic alternatives. If elimination or substitution are not an option, the next step would be engineering controls, such as exhaust ventilation. Should engineering controls not be feasible, employers must implement administrative controls (i.e., exposure time limits) and safe work practices (i.e., cleaning schedules and personal hygiene). When all else fails, personal protective equipment (PPE) must be used to keep workers safe.
Worker exposure quickly becomes a personal life exposure when lead stalks them all the way home, traveling inconspicuously in their hair or on their clothing and shoes. This “take-home” lead can contaminate a worker’s car and home, passing the exposure risk to family, friends, and pets.
The risk is enough to have nudged a NIOSH publication highlighting the hazards of take-home lead and guidance for what employers and workers can do to reduce take-home lead including:
- Performing lead inspections and risk assessments to ensure protective measures are implemented and effective;
- Using high-efficiency particulate air (HEPA) vacuums or wet methods to clean areas that have lead;
- Using proper ventilation and equipment when working with lead or lead-containing materials;
- Wearing PPE;
- Following manufacturer’s instructions for PPE removal;
- Storing work clothes in a closed plastic bag away from other clothes;
- Showering and changing into work clothes that remain at work;
- Storing clean clothes and other personal items in a dedicated area;
- Practicing proper handwashing, especially before eating and drinking;
- Eating and drinking in approved areas away from dust; and
- Avoiding placing or holding leaded materials (i.e., solder rods) in your mouth.
Before and after work, employers and workers can leave lead at the curb by:
- Limiting the number of personal items brought to work;
- Using disposable containers for food/drink;
- Removing work shoes before entering their home;
- Showering soon after arriving home;
- Washing and drying work clothes separate from other items;
- Avoiding handling food or touching the mouth or face while engaged in working with lead materials;
- Practicing proper handwashing, especially before eating and drinking;
- Avoiding placing or holding leaded materials (i.e., fishing sinkers or ammunition) in your mouth;
- Using proper ventilation and equipment when melting or handling lead to cast your own bullets, sinker, decoys, or other metal items.
- Keeping all lead or lead-exposed work and hobby materials away from living areas.
- Cleaning their home and car often;
- Using appropriate cleaning supplies to clean up lead; and
- Having blood lead levels periodically checked by a medical professional.
Key to Remember: While OSHA requires lead exposure protections at work, both employers and workers must also take precautions to minimize take-home lead.