Last April, The Compliance Resource Center reported that NIOSH, OSHA and NHCA (National Hearing Conservation Assoication), recently signed and agreement  to help prevent work-related hearing loss.
Now researchers at NIOSH’s Pittsburgh Research Laboratory have developed QuickFitWeb, an online tool to allow users to check their hearing protection in a minute or less. The site notes that ear muffs, ear plugs, and other hearing protection devices can reduce the risk of hearing loss, but only if the wearer gets a good fit and wears them properly. The NIOSH sound player tool allows users to perform a quick test of whether they are getting at least a minimal 15 decibel (dB) level of protection.

The test sounds are bands of random noise with a center frequency of 1000 Hz. This is the same type of sound used in standard hearing protector ratings including the “American National Standard Methods for Measuring the Real-Ear Attenuation of Hearing Protectors” (ANSI S12.6). Both tracks are the same, but the second track is 15 decibels (dB) louder than the first. Most hearing protectors will block or “attenuate” sound by more than 15 dB if they are the right size and shape to fit the ears and are worn correctly. A sound that is barely audible at a worker’s threshold of hearing without hearing protection should be inaudible though hearing protection even if it’s boosted by 15 dB.

To use the tool, visit www.cdc.gov/niosh/mining/topics/hearingloss/quickfitweb.htm.

An arc flash can happen without warning and occurs much too fast for you to react.

The heat released during an arc flash can reach as high as 35,000 degrees Fahrenheit — hotter than the surface of the sun. Large arc flashes can cause an explosion noise loud enough to cause hearing loss and injuries from being thrown back from the electrical explosion.

To better address this issue, the Electrical Safety Foundation International (ESFI) has teamed with NIOSH and the Centers for Disease Control to distribute Arc Flash Awareness, a DVD training course, available in both English and Spanish. The DVD includes basic information about arc flash awareness and contains the first hand accounts of three electrical workers who were severely injured in arc flash accidents.

Surprisingly, it has just been in recent years that the term “arc flash” has garnered much attention. Many companies have started to raise awareness about the problem. Some companies, however, do not think that arc flash is a serious concern because they have not yet had an arc flash incident.

An arc flash can result from the spontaneous failure of equipment during normal operation or from accidentally bridging two live electrical contacts with a conducting object, like a metal screwdriver or wrench. Other causes may include the improper use of electrical multimeters, poor housekeeping that allows the buildup of conductive dust, or severe corrosion that allows connections to break.

How large is the problem?
– According to CapSchell, Inc., a Chicago-based research and consulting firm that specializes in workplace injury prevention, there are five to 10 arc flash explosions every day in the United States.
– The final cost to employers and their insurers for a single, serious injury can approach $10 million. (CapSchell)
– 2,000 workers are admitted annually to burn centers for extended injury treatments caused by arc flash, according to the U.S. Department of Labor.
– A recent study from the National Institute for Occupational Safety and Health (NIOSH) determined 17,101 injuries were caused by electric arc flash burns between 1992 though 2001.

With statistics like this, companies cannot afford to ignore electrical safety issues surrounding accidental electrocution from arc flash explosions.

For more information on Arc Flash or to order a copy of the Arc Flash Awareness DVD visit the ESFI Library on the ESFI’s website, http://www.electrical-safety.org/ or call ESFI at 703-841-3229.