How often must a frequent inspection be performed in normal service conditions according to ASME B30.3?

Frequent inspections, as outlined in ASME B30.3, are essential for maintaining the safe operation of tower cranes under normal service conditions. The standard mandates that these inspections be conducted on a weekly to monthly basis. This frequency allows for timely identification of any potential issues or wear that may arise during regular operations, ensuring the crane remains in safe working condition.

Executing frequent inspections within this timeframe supports proactive maintenance and helps prevent accidents or failures that could result from undetected problems. The specified period acknowledges that while tower cranes are robust, they are still subject to various wear and external influences that necessitate regular checks to confirm their integrity and operational safety.