BS 7273-3:2000

Committees responsible
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 System design
5 Fire detection
6 System interface
7 Power supplies
8 Wiring
9 Servicing
Annex A (informative) Example of an arrangement for separate
                      fire alarm and pre-action control
                      and indicating equipment
Annex B (informative) Example of an arrangement for fire
                      detectors and pre-action valve-set
                      connected to and monitored by a single
                      control panel
Annex C (informative) Example of an arrangement for any
                      coincidence logic provided at fire
                      alarm control and indicating equipment
Annex D (informative) Example of an arrangement for any
                      coincidence logic provided at pre-
                      action control and indicating equipment
Figure 1 - Typical logic gate depiction of pre-action systems
Figure A.1 - Example of an arrangement for separate fire
             alarm and pre-action control and indicating
             equipment
Figure B.1 - Example of an arrangement for fire detectors and
             pre-action valve-set connected to and monitored
             by a single control panel
Figure C.1 - Example of an arrangement for any coincidence
             logic provided at fire alarm control and
             indicating equipment
Figure D.1 - Example of an arrangement for any coincidence
             logic provided at pre-action control and
             indicating equipment
Table 1 - Maximum areas of coverage per point-type smoke
          detector to operate pre-action sprinkler
          installations in still air conditions for
          coincidence and non-coincidence connection fire
          detection systems

Makes recommendations for installation, design, servicing and operation of electrical equipment used for the actuation of pre-action sprinkler systems.