What Are Permissible Mercury Vapor Exposure Limits?

We all know that mercury vapor can be detrimental to the health and safety of not only ourselves, but also to the environment. But how much is too much? The Federal Occupational Health and Safety Administration (OSHA) set a mercury permissible exposure limit (PEL) of 0.1 mg/m3 (8-hr time-weighted average [TWA]). Some state OSHA programs regulate a stricter mercury vapor limit of 0.05 mg/m3 (8-hr TWA). Additionally, the American Conference of Governmental Industrial Hygienists (ACGIH) recommends an a guideline of 0.025 mg/m3; this is the same value regulated by California OSHA.

One broken 48-inch fluorescent lamp in a small room or vehicle can release enough mercury vapor to exceed the Federal OSHA PEL. Mercury vapor concentrations could exceed occupational exposure levels when working with or near broken bulbs, especially when multiple bulbs are stored or shipped in bulk to recycling facilities. Based on measurements of mercury vapor from single broken fluorescent bulbs, there is a need for additional research to quantify emissions from various types of packaging. The results indicate that emissions from packages not designed to contain mercury vapor represent a real health and safety concern to those involved in its storage, transport and disposal, as well as a legal hazard for any businesses that do not adhere to these stipulations. Recent research has shown that only one current package design which includes a vapor resistant and zip seal bag has proven effective in containing mercury vapor.

Brad Buscher
Chairman and CEO
VaporLok Products LLC

Where Do Mercury Wastes End Up?

A significant volume of mercury-containing waste in the U.S. is finding its way into Canadian landfills because some treatment standards, recovery requirements and enforcement of those standards are less stringent than in the U.S. U.S. federal regulations require that hazardous wastes including mercury be treated using “Best Demonstrated Available Technology” which requires high temperature retorting. According to one report, if exports to Canada continue, U.S.-based mercury recycling facilities will be undermined. Likewise, investments in the best available technology will be punished instead of rewarded.

Uniform national policies in both the U.S. and Canada that prohibits land disposal would help eliminate confusion from the disparate policies. Infrastructure and recycling capacity already exist, but as long as exemptions and low enforcement remain, and recycling remains optional, increasing the rate will continue to be a struggle. Suffice it to say, U.S. and Canadian mercury recycling laws are in need of a major overhaul to protect the environment in the years to come.

Brad Buscher
Chairman and CEO
VaporLok Products LLC

How Many Fluorescent Lamps are Recycled?

According to the EPA, recycling rates of fluorescent lamps are estimated at only 20 to 25 percent, leaving the majority to be placed in dumpsters and eventually end up in landfills—where they may emit hazardous mercury vapor into the environment. The consumer recycling rate has been estimated to be even lower—possibly at less than 2 percent.

Mercury-containing waste that isn’t properly recycled poses a serious environmental and health concern. However, taking waste to a recycling center may not always be the most efficient solution. Consumers can use a recycling box to ship bulbs instead. If consumers choose this option, it is important to select a packaging configuration that effectively contains mercury vapor. A recent study conducted by the University of Minnesota tested the effectiveness of various packages in containing mercury vapor emitted from broken fluorescent lamps. The study found that many packages do not sufficiently contain mercury vapor, such as single-layer cardboard boxes (representing the original manufacturer’s box or container) as well as single layer boxes with a sealed plastic bag. Just one configuration—consisting of a zip-closure plastic-foil laminate bag layered between two cardboard boxes—minimized exposure levels below acceptable occupational limits, as defined by state and federal regulations and guidelines. Find out more about this proven packaging method at: http://vaporlok.blogspot.com/2010/05/layers-of-protection-packaging-used.html. If a bulb breaks, consumers can learn more about clean-up procedures here: http://www.epa.gov/cfl/cflcleanup-detailed.html

Brad Buscher
Chairman and CEO
VaporLok Products LLC

Would Your Office Benefit from Fluorescent Bulbs?

Many businesses strive to keep management expenses low, ensure energy efficiency and provide a safe work environment for employees. When it comes to selecting lighting, all of these aspects must be factored in. Fluorescent lamps have long been the best lighting option for small to large businesses, due to their significant energy savings—providing four to six times higher efficiency than incandescent lights—and long working life. However, these lamps contain hazardous mercury and, from installation to disposal, they must be carefully handled, stored and transported.

While the amount of mercury used in an individual fluorescent bulb has decreased over the past years, one broken four-foot fluorescent lamp in a small room or vehicle can release enough mercury vapor to exceed the OSHA mercury exposure eight-hour limit—posing a significant occupational health risk. Plus, mercury vapor can be emitted for weeks after a single bulb is broken. In their lifetime, fragile fluorescent lamps are handled by manufacturers, transporters, distributors, retailers, consumers and installers, as well as recycling or waste handlers. Although the lamps could break anywhere down this line and expose workers and the environment to hazardous mercury vapors, there are no universally enforced packaging standards designed to protect these people. Recent legislation has begun to address the issue of safe packaging for fluorescent lamps and other mercury-containing products, and businesses must work to not only comply with these regulations, but also ensure the safety of all personnel in addition to protecting the environment.

Brad Buscher
Chairman and CEO
VaporLok Products LLC