Posted By Alan Hoskins Hi Bob, In my view the ELV would more likely apply in unusual circumstances (though how this would be assessed without continual monitoring is unclear) whilst the EAVs most likely apply in normal circumstances - am I making sense? It's also in line with the 'immediate reduction' requirement found in the Vibration Regs. At the end of the day (that's twice I've used that phrase in a posting now...slapped wrist!) perhaps the biggest issue is proper and continuous use of the PPE where it is a requirement. Alan

Posted By Robert K Lewis I also tried to look at this in terms of the body exposure to noise as this seems to be hidden somehow in the distinctions. S. I totally agree with your summation. The 85 is a trigger to act but you can allow a weekly or daily personal exposure above that providing the weighted figure including hearing protection is less than 87. The use of the 87 seems more usefully to be a trigger to determine whether or not a review of the controls are necessary. Ho hum - we await the first prosecution on this then we will all understand - or not! Bob