Inspection and Testing Flashcards
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Read the first 6 Inspection and Testing flashcards as text
How often must automatic sprinkler system inspections be performed according to NFPA 25?
Answer: Quarterly and annually depending on component
NFPA 25 establishes a tiered inspection schedule where some components are inspected quarterly and others annually.
What test is performed to verify that a fire pump starts automatically?
Answer: No-flow test
A no-flow (churn) test verifies the fire pump starts automatically and runs at shutoff conditions without flowing water.
Under NFPA 25, how often must a full flow fire pump test be conducted?
Answer: Annually
NFPA 25 requires an annual full flow fire pump test to verify the pump meets its rated performance across its flow curve.
What is the purpose of a hydrostatic test on a newly installed sprinkler system?
Answer: To verify the system holds pressure without leaks
A hydrostatic test pressurizes the system to 200 psi (or 50 psi above maximum operating pressure) for 2 hours to verify there are no leaks.
Which of the following requires a 5-year internal inspection under NFPA 25?
Answer: Sprinkler pipe interior for obstruction investigation
NFPA 25 requires a 5-year internal inspection of sprinkler pipe to investigate for potential obstructions like scale, debris, or biological growth.
What condition triggers an obstruction investigation of a sprinkler system per NFPA 25?
Answer: Discolored water during drain test, discharge of foreign material, or known contamination
NFPA 25 triggers an obstruction investigation when discolored water, foreign material discharge, or known contamination sources are identified.