What is required to prevent leakage of DG during transport?

• A. Each inner container must be leak-proof and properly cushioned, and the outer packaging must be strong enough to prevent leakage under normal conditions
• B. Only outer packaging matters
• C. Leakage protection is not required for certain DG
• D. Only the outer packaging needs to be leak-proof

Answer: (A)

Preventing leakage during transport relies on a two-layer containment approach: the inner container must be leak-proof and cushioned, and the outer packaging must be strong enough to prevent leakage under normal transport conditions. The inner container is the primary containment, so it must not leak if tipped, shaken, or subjected to standard handling. Cushioning inside protects the contents from movement and impact that could cause a breach. The outer packaging provides a secondary barrier, maintaining overall integrity even if the inner container experiences some stress, and it must be robust enough to resist the rigors of transport. If you rely only on outer packaging, or ignore the need for a leak-proof inner container and cushioning, leakage can occur. The correct approach thus combines leak-proof inner units with proper cushioning and a sturdy outer container to keep contents contained under normal conditions.