Cyanide and Acid on the Same LTL Dock
At an LTL terminal near Dayton, you are assigned a 53-foot dry van with three pallets for separate consignees. Pallet A is 10 fiberboard boxes of UN1689, Sodium cyanide, 6.1, PG I, total 400 lb. Pallet B is four 55-gallon steel drums of UN1789, Hydrochloric acid, 8, PG II, total 2,100 lb. Pallet C is 12 cartons of UN3480, Lithium ion batteries, 9, total 300 lb. The dock lead wants all three pallets loaded together because the trailer is going to Cincinnati and the stops are close. The trailer has no bulkheads or segregated compartments. You have load bars and straps. The cyanide boxes are on a wooden pallet; one acid drum has a small dent near the bung but is not leaking. You must decide whether to load as directed and how to secure the load.
1. Do you load all three pallets in the same trailer? Explain your reasoning.
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No. The cyanide and the acid should not be loaded in the same vehicle. Sodium cyanide is a Class 6.1 toxic solid, and hydrochloric acid is a Class 8 corrosive. If acid leaks or spills and contacts cyanide, the reaction can release hydrogen cyanide gas, which is acutely toxic and can kill in an enclosed space. The segregation rules specifically treat cyanides and acids as incompatible, and the practical risk is exactly the kind of cross-contamination that a dry van cannot prevent once the drums shift or a bung seeps. The absence of a leak at the dock does not make the combination safe; the whole point is to prevent contact if a package fails in transit. I would refuse to load A and B together, ask the dock to split the shipment or hold one pallet for a separate trailer, and document the refusal. The lithium batteries do not create the same reaction hazard, but they still must be loaded and secured properly.
2. The dispatcher insists that the load must go out together. What options and documentation do you have?
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I would not let dispatch pressure override the incompatibility. My options are: ask for a second trailer or a later run for one of the incompatible pallets; ask the dock to hold the acid or the cyanide until it can be segregated; or escalate to the terminal manager or safety department. I would not sign a shipping paper that presents the load as ready if I know it is not. I would document the time, the names of the people involved, the specific pallets and UN numbers, and the reason for refusal. If the carrier still tries to force the move, that is a safety and regulatory issue, not a customer-service issue. The driver has the final say on whether the vehicle is safe to operate. I would also avoid loading the materials at opposite ends and calling that 'segregated'; a dry van without a bulkhead does not provide reliable separation if a drum leaks.
3. Assume the acid is removed and you load the cyanide and lithium batteries. How do you handle the dented acid drum question and secure the remaining load?
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If the acid is removed, the dented drum goes with it; I would not accept a damaged corrosive drum for any trailer. A dent near the bung can distort the closure and start a leak under vibration. For the remaining load, I would inspect the cyanide boxes for crushing or wetness and verify the UN marks and labels. I would place the pallets so weight is distributed over the axles, keep the cyanide upright and away from the doors if possible, and use load bars or straps to prevent fore-and-aft and side-to-side movement. Cartons should not be crushed by heavy freight. I would check the load after the first few miles and at each stop. The lithium batteries need their own securement and should not be stacked in a way that damages the cartons. Securement is not just 'make it tight'; it is keeping incompatible or damaged freight out of the load and preventing packages from shifting into each other.