A Leaking Drum and an 18-Mile Decision
At a rest area on I-35 near Pauls Valley, a driver hauling a placarded load stops for a break. The load includes twelve 55-gallon drums of UN 3264, Corrosive liquid, acidic, inorganic, n.o.s., Class 8. The driver smells a sharp odor and finds liquid dripping from under the trailer onto the asphalt. A puddle about 3 feet across has formed 2 feet from a storm drain. The shipping paper lists 660 gallons and a gross weight of 8,200 lb. The temperature is 88°F, the wind is from the south at 10 mph, and the consignee is 18 miles north. The driver has a cell phone, a fire extinguisher, and PPE in the cab. No one else is nearby. The driver considers moving the truck 100 feet to get away from the drain, then continuing to the consignee because the leak looks small.
1. Should the driver move the truck 100 feet and continue to the consignee? Give a decision with conditions.
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No, he should not continue the 18 miles. A leaking corrosive load is an emergency, not a delivery problem. Moving the truck can spread the liquid, leave a trail, and pull the puddle toward or away from the drain unpredictably. Continuing at highway speed would spread product, expose the public, and make the scene harder to contain.
A short move may be justified only if it can be done without running through the puddle, without spreading product, and without creating a traffic hazard, and preferably only at the direction of emergency responders. The priority is to stop the source if it can be done safely, protect the storm drain with dirt or absorbent, and keep people away. The driver should not re-enter the puddle or attempt repairs without proper PPE and training.
2. List the immediate actions and notifications, in order.
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First, stop and secure the scene: park safely, set the parking brake, turn off the engine, and keep unnecessary people away. Move upwind and uphill if possible, and put on appropriate PPE. Call 911 and report a hazardous materials leak, giving the location, UN number, material name, class, quantity, and the fact that a storm drain is 2 feet away. Notify the carrier and the shipper. Call CHEMTREC or the emergency number on the shipping paper for technical guidance.
Do not smoke, use flares, or operate equipment that could ignite vapors. If it can be done safely, block the drain with dirt, sand, or absorbent rather than washing the product into it. Keep the shipping paper available for responders. Do not attempt to neutralize the acid or wash it away with water.
3. How should the driver use the shipping paper and ERG, and what mistake might he make with water?
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Use the shipping paper to identify the UN number, proper shipping name, class, packing group, quantity, and emergency contact. Then use the ERG: find the guide number by the UN number or material name, and follow its isolation distance, protective clothing, and fire/ spill guidance. The ERG is a guide, not a repair manual; the driver should give the information to responders rather than improvise.
A common mistake is to hose the acid into the drain or to try to neutralize it. Water can spread a corrosive, generate heat, or react dangerously with some materials. It can also carry the product into the storm drain. The driver should contain, not dilute. If the ERG calls for water spray for a vapor cloud, that is a firefighter decision, not something the driver should attempt without training.