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BS 5839-8:2023

BS 5839-8:2023

$215.11

Fire detection and fire alarm systems for buildings – Design, installation, commissioning and maintenance of voice alarm systems. Code of practice

Published By Publication Date Number of Pages
BSI 2023 94
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PDF Catalog

PDF Pages PDF Title
5 Foreword
9 Section 1: General
Introduction
1 Scope
2 Normative references
11 3 Terms and definitions
14 4 Types of voice alarm system
18 5 Exchange of information and responsibilities
19 6 Variations from the recommendations of this document
21 Section 2: Design considerations
7 Interface between the fire detection and fire alarm system and the VAS
22 8 VASs in explosive gas or dust atmospheres
9 VAS components
23 10 Monitoring, integrity and reliability of circuits external to the VACIE
24 10.1 Fault monitoring
10.2 System integrity
25 11 Loudspeaker zones
26 12 Assistive listening systems
27 13 Loudspeakers
29 14 Voice sounders
30 15 Power amplifier reliability
31 16 Ambient noise sensing and compensation
17 Emergency microphones
32 Figure 1 — Example of pictogram for a standard microphone to mouth distance
Figure 2 — Example of pictogram for a close-talking microphone to mouth distance
33 18 Emergency messages
36 19 Audibility of attention-drawing signals and non-speech alarm broadcasts
37 20 Intelligibility of speech messages
38 20.1 Audibility
39 20.2 Measurement of intelligibility
Table 1 — Minimum number of assessment points
40 20.3 Objective intelligibility assessment
20.4 Subjective intelligibility assessment
41 21 Priorities
22 Voice alarm control and indicating equipment
42 22.1 Siting of the VACIE
22.2 Facilities provided by the VACIE
22.3 Facilities provided for visual indications
43 22.4 Facilities provided for control of the VAS
44 23 Distributed systems
45 24 Cybersecurity
25 Power supplies
46 25.1 Mains power supplies
48 25.2 VAS power supply units
25.3 Standby supplies
49 26 Cables, wiring and other interconnections
52 27 Radio-linked VASs
53 28 Climatic and environmental conditions
54 29 Radio and electromagnetic interference
55 30 Electrical safety
56 Section 3: Installation
31 Responsibility of installer
58 32 Installation practices and workmanship
59 33 Inspection and testing of wiring
60 Section 4: Commissioning and handover
34 Commissioning
61 35 Documentation
62 36 Certification
63 37 Acceptance
64 38 Verification
65 Section 5: Maintenance
39 Routine testing
66 40 Inspection and servicing
69 41 Non-routine attention
72 Section 6: User responsibilities
42 Premises management
73 43 Logbook
74 Annex A (informative)  Typical ambient noise levels and their effect on VAS design
75 Table A.1 — Example of design targets for emergency operation
Table A.2 — Typical occupational noise levels
78 Annex B (informative)  Voice alarm control and indicating equipment
80 Annex C (normative)  Standby battery calculations for valve-regulated lead acid batteries
83 Annex D (informative)  Model certificates
84 Figure D.1 — Model design certificate
85 Figure D.2 — Model installation certificate
86 Figure D.3 — Model commissioning certificate
87 Figure D.4 — Model acceptance certificate
88 Figure D.5 — Model verification certificate
89 Figure D.6 — Model inspection and servicing certificate
90 Figure D.7 — Model modification certificate
91 Bibliography

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BS 5839-8:2023
$215.11