Level indicators shall be tested every ______ for accuracy and freedom of movement.

Level indicators shall be tested every ______ for accuracy and freedom of movement.

• A. 3 years
• B. Monthly
• C. 5 years
• D. Quarterly

Answer: (C)

Level indicators show the water level and must both reflect the true level and move freely when inspected. The test ensures two things at once: the reading is accurate and the mechanism isn’t sticking or seized. Five years is used because these devices are relatively simple and durable, so they don’t typically drift or seize quickly. A five-year check catches wear or fouling before it could affect operation, while avoiding the unnecessary cost and effort of more frequent testing. When you test, you verify the indicator against the actual level and confirm the moving parts operate through the full range without binding, plus check seals and connections. Monthly or quarterly testing would be excessive for this item, and other shorter or longer intervals aren’t the standard practice for level indicators.

Level indicators show the water level and must both reflect the true level and move freely when inspected. The test ensures two things at once: the reading is accurate and the mechanism isn’t sticking or seized.

Five years is used because these devices are relatively simple and durable, so they don’t typically drift or seize quickly. A five-year check catches wear or fouling before it could affect operation, while avoiding the unnecessary cost and effort of more frequent testing. When you test, you verify the indicator against the actual level and confirm the moving parts operate through the full range without binding, plus check seals and connections.

Monthly or quarterly testing would be excessive for this item, and other shorter or longer intervals aren’t the standard practice for level indicators.