What is a safety rule when using pneumatic lifting bags?

• A. Never inflate near power lines
• B. Never inflate a device without a load
• C. Always inflate to maximum pressure
• D. Use only electric pumps

Answer: (B)

When using pneumatic lifting bags, the load on top is what allows the lift to be controlled and safe. The bag needs something to push against in order to transfer its force into lifting the object. If you inflate a bag with no load, there’s nothing restraining it, so it can rise, shift, or tilt unpredictably. That can cause the bag to slip off, eject debris, or strike workers, and it’s difficult to manage the pressure safely. Having a stable load on top provides a defined reaction surface, keeps the bag seated, and ensures the lift is controlled and predictable.

The other ideas don’t address this fundamental safety requirement. For example, inflating near power lines introduces electrocution risk, inflating to maximum pressure increases the chance of rupture or sudden, uncontrolled movement, and insisting on a specific pump type doesn’t guarantee a safe lift. The essential rule is to never inflate without a load.