Question 169 of 180

Why do some hazardous materials require inner packaging in addition to an outer container, rather than a single layer of packaging?

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Multiple layers provide additional protection against leakage or breakage during handling and transport
Multiple layers of packaging are purely a matter of shipper preference with no regulatory basis at all
Inner packaging requirements apply only to Class 7 radioactive materials
Inner packaging is used only to reduce the overall shipping weight

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Correct answer to question 169 (Hazardous Materials): Multiple layers provide additional protection against leakage or breakage during handling and transport

Why

For certain materials, a combination of inner and outer packaging provides extra protection against leakage or breakage, adding a layer of containment beyond what a single package alone would offer.

Updated: November 2026

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Why do some hazardous materials require inner packaging in addition to an outer container, rather than a single layer of packaging?

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