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Table 3 Data on sprinkler piping reliability

From: A review of sprinkler system effectiveness studies

Description Source Unit Minimum Mean Maximum
Pipe array (Ronty and Keski-Rahkonen 2004) failures/year 2.4 × 10 -6 3.3 × 10 -6 4.3 × 10 -6
Gasket failure (Budnick 2001) failures/hour 5.00 × 10 -7 4.00 × 10 -6 1.20 × 10 -5