Waterways - Class 1 Precautions

Artificial Lighting

When loading and unloading Class 1 - Explosive Materials, the only form of artificial lighting permitted is electric lights, with the exception of arc lights.

Radio and Radar

When Class 1 - Explosive Materials are loaded, unloaded, or handled, the responsible person must ensure that all sources of electromagnetic radiation, such as radio and radio transmitters, are de-energized and tagged to warn that the devices must not be energized until loading or unloading has ceased. Radio and radar regulations when loading and unloading Class 1 - Explosive Materials can be found in §176.150.

Fueling

Class 1 - Explosive Materials, except those in compatibility group S, must not be loaded or unloaded while fueling, except with prior authorization of the COTP. Vessels must not be fueled with the hatches open unless authorized by the COTP.

Defective Packages

Broken, leaking, or otherwise defective packages containing Class 1 - Explosive Materials must not be accepted for shipment. Repairs of damaged packages must not be performed on board a vessel. Regulations involving defective or damaged packages containing Class 1 - Explosive Materials can be found in §176.156.

Protection against Weather

You must take adequate measures to prevent packages containing Class 1 - Explosive materials from becoming wet.

Security

Someone must be present at all times when the hatches of spaces containing Class 1 - Explosive Materials are open, and no unauthorized person may be permitted. Magazines must be secured against unauthorized entry when loading has been completed, or when loading or unloading is stopped. Packages containing Class 1 - Explosive Materials must not be opened on board ship.

Fire Precautions and Fire Fighting

Matches, lighters, fire, and other ignition sources are prohibited on and near any vessel on which Class 1 - Explosive Materials are being loaded, unloaded, or handled except in places designated by the master or the COTP.

No repair work can be done in a cargo space containing Class 1 - Explosive Materials other than those in Division 1.4. Fire precautions and firefighting regulations with Class 1 - Explosive materials are found in §176.164.

To learn more about Waterways HAZMAT visit our DOT Waterways HAZMAT Online Training web page.