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IEC 60849 Sound system for emergency purposes

IEC 60849 Sound system for emergency purposes. “ .....sound reinforcement and distribution systems to be used for rapid and orderly mobilization of occupants in case of an emergency situation”. Introduction. Sound system for emergency purposes.

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IEC 60849 Sound system for emergency purposes

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  1. IEC 60849 Sound system for emergency purposes

  2. “ .....sound reinforcement and distribution systems to be used for rapid and orderly mobilization of occupants in case of an emergency situation” Introduction Sound system for emergency purposes

  3. “ ....should be part of a complete facility for the control of emergencies, including equipment, operation instructions and training......” Introduction Sound system for emergency purposes

  4. Emergency Sound System standards in various countries: EN 60849 IEC 60849 VDE 0828 BS 5839-8 CNS 10522 NEN 2575 CP 25 AS 60849 International standards

  5. System overview Public Address system Routing and switching

  6. Fire detection Routing and switching Emergency!! System overview Emergency Sound System Supervise and report

  7. Contents from the standard Level of attention signals 6 - 25 dB above noise level 65-75 dBA Back ground noise Speech

  8. Attention Messages Message 1 Message 2 Repeated Contents from the standard Structure of attention signals and messages t

  9. Attention Messages Message 1 Message 2 Live speech Repeated Manual. Contents from the standard Structure of attention signals and messages • “live speech should be able to take over” t

  10. Contents from the standard • System requirements • Available at all time • Reaction time after alarm < 3 sec. • Broadcast to more than one areas simultaneously • Indications of status of relevant parts • Clear short messages, stored in a non-volatile form • Messages and settings shall be protected

  11. Contents from the standard • System requirements • Speech intelligibility, CIS equal or better than 0.7 • Secondary power supply • Fault indication within < 100 sec. • Storage of at least 99 failures

  12. Contents from the standard • System requirements • Automatic status indication • System status • Power supply status • Fault condition

  13. Contents from the standard • System requirements • Fault monitoring • Primary and secondary power supply • Microphones • Total audio path • Amplifier and back-up amplifier • Pre-recorded messages and signal generator • Loudspeaker circuits • µ Processor

  14. Contents from the standard • Requirements at Fireman’s locations • Control of: • Emergency microphone • Zone selection • Selection of pre-recorded messages • Alarm reset • Sounder activated by any fault

  15. Contents from the standard • Requirements at Fireman’s locations • Indications on: • System availability • Power supply availability • Any fault condition • Status of individual zones

  16. Contents from the standard Loudspeaker circuits • Two independent circuits per zone • Fire rated wiring/connection • Loudspeakers • fire dome • ceramic termination block • thermal fuse

  17. Contents from the standard Secondary power supply • At least 24 hrs stand-by followed by min. 30 minutes evac. • recharging to 80% within 24 hrs

  18. Contents from the standard Documentation • Instruction manuals • Maintenance instructions • Emergency procedures • Records to be kept • Installation details • Test en Maintenance log book with date and time

  19. Availability of the standard ....always check the national standards...

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