Federal regulation restricts the tools that may be used when a Class 1 explosive material or another dangerous article is loaded or unloaded. What is the restriction?

Explanation

No tool likely to damage the effectiveness of any package's closure, or likely to adversely affect the package or container, may be used to load or unload a Class 1 explosive material or other dangerous article. The test the rule applies is the damage a tool is likely to do to the packaging, not what the tool is made of or whether it is powered, which is why the rule can reach an ordinary pry bar used carelessly on a drum lid. Closures matter this much because the packaging is what keeps the material contained, so a compromised closure turns a compliant shipment into a leaking one. The wrong options each swap in a different test, a materials-and-power test drawn from spark hazards rather than closure damage, a paperwork test that would let a carrier authorize its way around the rule, or a scope limited to powered equipment.

Source: 49 CFR 177.834(f)