2009-08-01 12:00 - Messages

Real world use and performance of hearing protection

This report considers the effectiveness of hearing protectors in everyday work situations. The study reported here was undertaken in two parts. The first consisted of interviews with employers to discuss management of noise and hearing protector use, and on site observation of hearing protector use.

The second part was objective laboratory measurements of hearing protector insertion loss. The purpose of these measurements was to quantify the reduction in protection due to poor fitting or maintenance for a range of hearing protectors. Earmuffs were tested using the MIRE (microphone in real ear) method while earplug insertion loss was measured using a head and torso simulator with a simulated pinna and ear canal.

http://www.hse.gov.uk/research/rrhtm/rr720.htm

New Temperature Rating Standard Is Developed by ASTM Personal Protective Clothing Committee

In the field of personal protective clothing, a temperature rating indicates the lowest acceptable air temperature at which an average person would be comfortable when wearing a certain set of clothing. While manufacturers believe that providing temperature ratings is helpful to consumers when they are comparing garments, there have been different methods of testing for a temperature rating. The need to find common ground in this area has led to a new ASTM International standard, F2732, Practice for Determining the Temperature Ratings for Cold Weather Protective Clothing.
 
http://69.7.224.88/default.aspx?pageid=1841

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