Safety catches or dogs of cages shall be inspected and drop tested with load equivalent to its full capacity at least once every __________.

• A. Three months
• B. Six months
• C. One year
• D. One month

Answer: (A)

Regular, repeated verification of safety catches or dogs on cages is essential because these devices must reliably hold a fully loaded cage and prevent an uncontrolled descent. The test isn’t just a quick check; it actively shows that the catch will engage properly under real load conditions if the hoisting system momentarily fails. By performing a drop test with a load equal to the cage’s full capacity at least every three months, you continuously verify the mechanism’s reliability and catch potential wear, misalignment, or corrosion before it becomes critical. Testing at longer intervals, like six months or a year, increases the risk that a developing fault goes unnoticed, while testing too often (such as monthly) is unnecessarily frequent for this equipment. Regular quarterly testing strikes the right balance for safety and practicality.