PD 6531:1997

Foreword
1 Scope
2 Interpretation of BS 5839: Part 1:1988
  2.1 Manual and automatic systems
  2.2 Short circuit monitoring
  2.3 Monitoring of alarm sounder circuits
  2.4 The use of isolators between zones
  2.5 Addressable detector/sounder circuits
  2.9 Disk memories
  2.10 "Search distance" in addressable systems
  2.11 Zoning of multi-storey buildings
  2.12 Starting or restarting fire alarm sounders
  2.13 Loudness of alarms in residential care homes
  2.14 Loudness measurement for voice alarm signals
  2.15 Travel distance to manual call points
  2.16 Positioning of detectors in a roof apex
  2.17 Detectors in ventilated ceiling voids
  2.18 Optical beam detectors in congested roof spaces
  2.19 Siting of detectors near ceiling obstructions
  2.20 Detectors in lift shafts
  2.21 Detectors in ventilation ducts
  2.22 Use of L2 and L3 systems
  2.23 Smoke detector standards for type L Systems
  2.24 Smoke detectors used to operate door-holding
       devices
  2.25 Door smoke seals
  2.26 Sprinkler protection
  2.27 Time delays
  2.28 Reduced sensitivity
  2.29 Remote isolation facilities
  2.30 Diagrammatic representation of the building
  2.31 Connection to mains supplies
  2.32 Fire protection of mains wiring to fire alarm
       systems
  2.33 Use of standby generators
  2.34 Conditions to be satisfied for absence of
       mechanical protection to cables
  2.35 Rodent attack on cables
  2.36 'Low smoke' cables
  2.37 Fire resistant armoured cables
  2.38 Cabling of ring-connected data-transmission
       systems
  2.39 Radio-linked sounders
  2.40 Ancillary services
  2.41 Testing of manual call points
  2.42 Zone testing
  2.43 Testing voltages
  2.44 Insulation testing at the 5-year test
  2.45 Cable fixings
3 Interpretations of BS 5839:Pt4:1988
  3.1 Silencing of facilities
  3.2 Short circuit warnings
  3.3 Fire alarm response to manual call point
  3.4 Earth faults
  3.5 Fault location displays
  3.6 Memory check sums
  3.7 Disk memories: see 2.9 of this Published Document
  3.8 Memory check routines
  3.9 Total loss of power
  3.10 Battery monitoring current
Subject index
List of references

Deals with interpretations on both standards in the form of questions and answers.