I have been in this industry for 25 years. I believe every company I have ever worked at has done a hydraulic calculation when replacing Hydraulic Placards due to an inspection deficiency. But yesterday we were having a discussion here in the office as to whether or not the calculation was actually required per NFPA 25. There is no information on the plate that indicates whether or not the system even works ... just what is required. Does your company do a flow test and calculation when replacing missing plates? And if so, what happens when you discover that the system no longer works as originally designed?
John Irwin
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