What does 49 CFR 177.839 (Class 8 (corrosive) materials) require?

Short answer

49 CFR 177.839 requires specific handling and loading procedures for Class 8 (corrosive) materials, including nitric acid and storage batteries.

1. Nitric acid of 50 percent or greater concentration cannot be loaded above other materials.

2. Storage batteries must be protected against other lading and have adequate means to prevent short circuits.

The rule says

"No packaging of nitric acid of 50 percent or greater concentration may be loaded above any packaging containing any other kind of material." (49 CFR 177.839(a))

"All storage batteries containing any electrolyte must be so loaded, if loaded with other lading, that all such batteries will be protected against other lading falling onto or against them, and adequate means must be provided in all cases for the protection and insulation of battery terminals against short circuits." (49 CFR 177.839(b))

In plain English

For nitric acid, this means not loading it on top of other materials, as it can cause damage or leakage. For storage batteries, they must be secured and protected from other cargo to prevent short circuits or damage. These precautions are essential to prevent hazardous situations during transportation.

What to do

• Ensure nitric acid is loaded below other materials in the vehicle.
• Secure storage batteries to prevent damage or short circuits.
• Provide adequate protection and insulation for battery terminals.
• Train personnel on the proper handling and loading of Class 8 corrosive materials.