Possibly in EN 54 Series. Part 3: Fire alarm devices — Sounders See BS 5839 Series. BS 5839-1 or -8. code 21.1b recommends 5dB. 10dB in noise environments (see 22.1.10).
Chuck McDowell Compliance Specialist Meyer Sound Laboratories Inc. Direct: 510-540-4670 From: Doug Powell [mailto:[email protected]] Sent: Monday, February 06, 2017 3:58 PM To: [email protected] Subject: [PSES] Acoustic Warning - sound pressure level All, I recall some time ago reading information on minimum sound pressure level for acoustic warning in noisy environments. It was possibly in an IEC standard or a handbook making recommendations. As I recall the recommendation was something like warning bells, horns and klaxons should be 3 to 6 dB SPL above the ambient noise level in the immediate work area. If this is not possible or operators may be wearing hearing protection, then visual warnings should also be included. Can someone point me in the right direction? Thanks, Doug -- Douglas E Powell [email protected]<mailto:[email protected]> http://www.linkedin.com/in/dougp01 - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]<mailto:[email protected]>> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe)<http://www.ieee-pses.org/list.html> List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]<mailto:[email protected]>> Mike Cantwell <[email protected]<mailto:[email protected]>> For policy questions, send mail to: Jim Bacher <[email protected]<mailto:[email protected]>> David Heald <[email protected]<mailto:[email protected]>> NOTICE: This email may contain confidential information. Please see http://www.meyersound.com/confidential/ for our complete policy. - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) 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]>
