Approved Document B (Volume 1, 2019 edition incorporating 2020 amendments, page i) specifically provides for the use of non-standard systems, explaining that:
‘although approved documents cover common building situations, compliance with the guidance set out in the approved documents does not provide a guarantee of compliance with the requirements of the regulations because the approved documents cannot cater for all circumstances, variations and innovations.…Where the guidance in the approved document has not been followed… the person carrying out building works should demonstrate that the requirements of the regulations have been complied with by some other acceptable means or method.’
Several alternative guidance documents support the use of Automatic water fire suppression systems (AWFSS) to meet building regulations:
BS 9991:2015 Fire safety in the design, management and use of residential buildings. Code of practice
BS 7974:2019 Application of fire safety engineering principles to the design of buildings. Code of practice
Fire engineering research shows Automist is superior to a conventional glass bulb ceiling mounted system:
"the measured activation times of a concealed sprinkler head is 2.0 to 13.7 times slower than those using an electronic nozzle system"
The fire industry has been asking for change for many years - Why must we innovate in active fire suppression?