What is the frequency for testing the meter that measures flow during bypass tests on a fire pump setup?

What is the frequency for testing the meter that measures flow during bypass tests on a fire pump setup?

• A. annually
• B. every 2 years
• C. every 3 years
• D. every 5 years

Answer: (C)

When checking a fire pump’s performance with a bypass test, you rely on the flow meter in the bypass line to verify the pump can deliver the required flow. That meter must stay accurate, because drift in readings could hide or exaggerate pump performance issues. Calibrating or verifying the flow meter every three years is a common, practical interval that keeps readings trustworthy for test purposes without incurring the cost of annual checks. A shorter interval (like annually) isn’t usually necessary unless the manufacturer requires it or the meter is in particularly variable conditions, while a longer interval (such as five years) risks the meter drifting enough to compromise test results.

When checking a fire pump’s performance with a bypass test, you rely on the flow meter in the bypass line to verify the pump can deliver the required flow. That meter must stay accurate, because drift in readings could hide or exaggerate pump performance issues. Calibrating or verifying the flow meter every three years is a common, practical interval that keeps readings trustworthy for test purposes without incurring the cost of annual checks. A shorter interval (like annually) isn’t usually necessary unless the manufacturer requires it or the meter is in particularly variable conditions, while a longer interval (such as five years) risks the meter drifting enough to compromise test results.