Underground piping fire water system

Every industrial plant is protected by a fire water system that provides water to each piece of equipment through hydrants, monitors, or deluge spray systems. Each process unit has its own underground piping loop system, which is adequately valved to protect the system from a failure in any part of the line or isolation because of maintenance. Although each piece. of equipment must be protected by one hydrant or monitor, client specifications often override this rule and require two sources of fire water for each piece of equipment. Basic fire protection equipment consists of fire hydrants, hydrants with monitors, grade-level and elevated monitors, hose reels, and deluge and spray systems. 

Sufficient sectional block valves should be provided so that sections of the underground system can be taken out of service for repairs without undue interruption of the fire water protection. For example, the sectional block valves should be located so that a combination of no more than five resources, such as hydrants, monitors, water spray systems, etc. would be out-of-service at any given time. Sectional block valves should be provided at no more than 800 ft (243 m) intervals for long runs of pipe. 

Sprinkler systems consist of integrated underground and overhead piping systems designed in accordance with fire protection engineering standards. The following are part of the water supply that would feed water through a system to a fire ... 

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