Dry Pipe Fire Sprinkler Systems Inspection Testing Maintenance

Specific requirements relating to the inspection testing and maintenance of wet and dry pipe fire sp rinkler systems can be found in chapters 5 13 14 and 15 of nfpa 25.

Dry pipe fire sprinkler systems inspection testing maintenance.

Specific requirements relating to the inspection testing and maintenance of fire pumps can be found in chapter 8 of nfpa 25. An inspection is a visual inspection performed from the ground. Dry sprinkler systems protect people and property from fires in areas prone to freezing but this important benefit comes with some strings attached. Inspection testing and maintenance of dry pipe valves and dry pipe systems are critical to maintaining effective fire protection.

Dry pipe valves are used in areas subject to freezing temperatures. Since dry sprinklers are more complicated than wet sprinkler systems and regularly exposed to harsh environments extra care is required to maintain reliable fire protection. Systems other than those which have been properly installed are beyond the scope of nfpa 25. Maintenance intervals other than preventive maintenance are not provided as they depend on the results of the visual inspections and operational tests.

For foam water sprinkler systems in aircraft hangars refer to the inspection test and maintenance requirements of nfpa 409 table 11 1 1. Instead the water delivery time is compared to results from the original acceptance test which was performed right after the system was installed. An nfpa 25 inspection applies to a properly installed fire sprinkler system only and is the standard for inspecting not for installing. During a complete fire sprinkler system test the technician should perform physical checks on all parts of your fire sprinkler system.

These checks include water flow tests fire pump tests antifreeze concentration tests in applicable systems alarm tests and trip tests of dry pipe deluge and pre action valves.