NFPA 25, 8.1 requires weekly visual inspection of Pump System components and the pump house vents to be in good working order.
Pumps are to be operated in the No Flow condition each week and run in Flow condition annually.
NFPA 25, 5.3.4 requires annual testing of the solution strength.
Although sprinkler systems or section exposed to freezing condition normally would be designed as Dry Pipe Systems, NFPA 13 does allow for small exposed sections to be filled with specified Antifreeze Solution.
NFPA 25, 22.214.171.124 requires inspections to show the system components to be in good working conditions. Observation for corrosion in or on any system component must be included in any and all Inspection.
Although rusty components may be of obvious concern two other corrosion mechanisms need to be highlighted:
1) Corrosive environments such as Marine applications, Water Treatment Plants, Onion Processing Plant, and other Manufacturing/Processing Facilities that generate caustic or acidic gases or vapors require special materials to be used as well as increased Inspection & Maintenance.
2) Microbiologically Influenced Corrosion (MIC) has been found in recent years to be devastating to wet pipe systems. NFPA 25, 126.96.36.199 requires testing for MIC if tuberules/slime are found (during annual inspections). Monitoring programs and specialized equipment are available to ensure your system and safety are not impaired my "MIC". Call our office for more information.
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