John Woodgate wrote: > This is about acoustic shock, high-level transients in telecomms terminals. > It is a totally different subject from the subject of high programmes signal levels > from portable players and exposure in clubs and the workplace. > Unfortunately, people unfamiliar with this subject have indeed often confused them. > It is NOT, as far as I know, controversial, although the 'traditional' (i.e. dating > from the days of the General Post Office) UK limit was 126 dB SPL (not, IIRC, > A-weighted, which is inappropriate at such levels anyway; the ear's response is > nearly flat, so C-weighting would be more relevant).
Ignoring the noise level from personal (e.g. MP3 player) headsets, where in the UK regulations is this differentiation made between general external noise at work and noise from headphones (used at work)? UK regulation SI 2005/1643 states the absolute maximum exposure for workers is 87dB(A) daily average or 140 dB(C) peak. (Lower action limits being 80 dB(A) and 135 dB(C)). The regulations don't mention headsets, so by implication they are included - yes/no? (the UK regulations don't apply to non-work situations, so you can have your music blaring as much as you like in your headphones!) Not contradicting you John, just interested, as we supply equipment which feeds sounds into army headsets for training "squaddies", and I've always assumed the UK noise at work limits apply whether you are wearing headphones or not. (or even ear-defenders!) Alan BAE Systems ******************************************************************** This email and any attachments are confidential to the intended recipient and may also be privileged. If you are not the intended recipient please delete it from your system and notify the sender. You should not copy it or use it for any purpose nor disclose or distribute its contents to any other person. ******************************************************************** - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________
