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Table 8 New Zealand survey data on 1,293 sprinkler systems from 1999 to 2007 ( Gravestock 2008 )

From: A review of sprinkler system effectiveness studies

Fault/Issue Office Apartment All building types
Inadequate supply 1.97% 2.38% 1.70%
Signalling fault 1.32% 2.38% 1.08%
Fire service inlet 0.66% 0.00% 1.01%
Flow switch 0.00% 0.00% 0.23%
Floor isolation 0.00% 0.00% 0.08%
Street valve 3.95% 0.00% 0.62%
Pump performance 2.63% 0.00% 1.47%
Pump start 3.29% 4.76% 1.24%
Hydraulic gong 0.00% 0.00% 0.15%
Anti-Interference gear 2.63% 0.00% 0.85%
Isolated 0.66% 0.00% 0.23%
Pressure switch 0.00% 4.76% 0.15%
Unprotected areas 1.97% 9.52% 2.48%