New standard for ESFR and CMSA systems

The BSI has announced that the standard BS EN 12845-2:2024 - Fixed firefighting systems. Automatic sprinkler systems. Design and installation of ESFR and CMSA sprinkler systems has now been published.

The document specifies requirements for the design and installation of early suppression fast response (ESFR) and control mode specific application (CMSA) sprinklers in automatic sprinkler systems.

ESFR (early suppression fast response) sprinklers tends to be used in high hazard storage scenarios to provide effective ceiling-only sprinkler
protection (although ESFR protection schemes utilising in-rack sprinkler heads do also exist). Designs are typically specified in terms of k-factors, numbers of heads operating and required head pressures.

CMSA (Control Mode Specific Application) sprinkler protection tends to be used in a variety of high hazard storage scenarios, where alternative approaches are not considered suitable. 

For further details visit: https://standardsdevelopment.bsigroup.com/projects/2021-03138#/section