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NFPA Standard 25 2014: ITM of Fire Pump Systems

NFPA Standard 25 2014: ITM of Fire Pump Systems. By: Bruce H. Clarke CFPS American International Group Global Property Risk Engineering Training Coordinator Charlotte, NC, USA Bruce.Clarke@AIG.com. NFPA 25 Fire Pump ITM. Design & Installation Acceptance Testing.

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NFPA Standard 25 2014: ITM of Fire Pump Systems

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  1. NFPA Standard 25 2014:ITM of Fire Pump Systems By: Bruce H. Clarke CFPS American International Group Global Property Risk Engineering Training Coordinator Charlotte, NC, USA Bruce.Clarke@AIG.com

  2. NFPA 25 Fire Pump ITM Design & Installation Acceptance Testing Inspection, Testing, and Maintenance after Acceptance Testing

  3. NFPA 25 Fire Pump ITM Some other potential references/resources: • NFPA 13: Sprinkler systems • NFPA 14: Stand pipe systems • NFPA 22: Private service tanks • NFPA 24: Private service water mains • NFPA 70: Electrical systems • NFPA 72: Alarms • NFPA 110: Emergency/standby power systems • NFPA 1963: Hoses

  4. NFPA 25 Fire Pump ITM Primary NFPA 25 references for ITM of fire pump systems: • Ch. 5: Sprinkler systems • Ch. 6: Hoses & standpipes • Ch. 7: Private water mains • Ch. 8: Pumps • Ch. 9: Tanks • Ch. 13: Valves • Ch. 14: Corrosion/obstructions • Ch. 15: Hoses • Ch. 16: Impairments

  5. NFPA 25 Fire Pump ITM

  6. NFPA 25 Fire Pump ITM NFPA 25 inspection requirements include: • Valves open [8.2.2 (1)(a)] • Suction reservoir has required water level On [8.2.2(2)(e)] • Controller in auto [(8.2.2(4)(b)] • Controller battery back-up power is On [8.2.2(3)(c&d)] • Controller pilot light illuminated On [8.2.2(3)(a)] • Fuel tank at least 2/3 full [(8.2.2(4)(a)] • All alarm lights off [(8.2.2(4)(f)] • Battery electrolyte levels acceptable [(8.2.2(4)(k)]

  7. NFPA 25 Fire Pump ITM NFPA 25 test requirements include: Churn testing: • Diesel-driven pumps- weekly churn(no flow) [8.3.1.1] • Or, based on approved risk analysis [8.3.1.1.2] • 30 minute minimum duration [8.3.2.4] • Electric-driven pumps- monthly churn(no flow) [8.3.1.2.1] • Or, weekly for high-rises, LS controllers, vertical turbines • Or, weekly for pumps with ground level tanks (or similar) • Or, back to monthly if there is redundancy • Or, based on approved risk analysis [8.3.1.2.4] • 10 minute minimum duration [8.3.2.3]

  8. NFPA 25 Fire Pump ITM NFPA 25 test requirements include: Full flow testing: • No flow, 100%, 150% points [8.3.3.1] • Test with approved devices [8.3.3.1] • Flow meters acceptable every 2nd & 3rd year only [8.3.3.1.3] • Testing of alarm conditions [8.3.3.5] • “Routine” testing of associated emergency generators [8.3.6.1] • Degradation testing of diesel fuels [8.3.4]

  9. NFPA 25 Fire Pump ITM NFPA 25 test requirements include: Full flow testing pump curve analysis requirements: • Step One [8.3.7.2.1]: • Check speed-adjusted net performance to pump curve/placard • Use 5% performance degradation as investigation trigger • Step Two [8.3.7.7]: • Check unadjusted gross performance to fire system demands • Use graphical results as investigation trigger

  10. NFPA 25 Fire Pump ITM Step One: Pump Net Performance Evaluation Procedure[8.3.7.2.1]: • Adjust recorded gross flow and pressure performance data (discharge pressure-suction pressure) to the pump rated speed at each test point utilizing Affinity Law calculations. • Plot speed-adjusted performance curve overlaid on manufacturers original data sheet or pump placard-generated curve. • Determine if performance is within 5% of recorded “new” performance

  11. NFPA 25 Fire Pump ITM

  12. NFPA 25 Fire Pump ITM Step Two: Pump Gross Performance Evaluation Procedure[8.3.7.7]: • Plot flow and pressure demand points of all fire protection systems supplied by fire pump on hydraulic graph paper. • Plot gross pump data performance curve (not adjusted for speed) overlaid. • Determine if gross discharge exceeds demands for fire protection systems being supplied.

  13. NFPA 25 Fire Pump ITM

  14. NFPA 25 Fire Pump ITM PUMP TEST CRITICAL RULES for GOOD RESULTS: NO. 1: Physical test “acceptably” is based on methods and tools used. NO. 2: Pump performance “acceptability” is based on accuracy of the data collected and quality of analysis.

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