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Module 1: Regulations - International Association of Fire Fighters

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Student Text IAFF Training for Hazardous Materials: Technician©<br />

Hazardous Materials Quantity Limitations<br />

Shipping Names 2 9<br />

Acetone 5L 60L<br />

Nitric Acid, Forbidden Forbidden<br />

Red Fuming<br />

Methylhydrazine Forbidden Forbidden<br />

Sulfuric Acid Forbidden 30L<br />

Column 10 - Stowage Requirements<br />

Column 10 specifies stowage requirements aboard water<br />

bearing vessels. For more information refer to 49 CFR<br />

172.101 [(k)].<br />

Activity<br />

Hazard Classes<br />

The hazard class system is illustrated on the next page and<br />

lists hazard classes from the most dangerous to the least<br />

dangerous. There are nine hazard classes. When a hazard<br />

class is shown on labels, markings, placards, and shipping<br />

papers, it is indicated by numbers 1 through 9. Some<br />

hazard classes have subclasses, which are called divisions.<br />

A division is indicated by a number to the right <strong>of</strong> the<br />

decimal. If a hazard class and division applies to a particular<br />

hazardous material, use the appropriate class number,<br />

followed by a decimal and division number (e.g., 1.6). The<br />

number to the left <strong>of</strong> the decimal is the hazard class number<br />

(in this case, “1” indicates an explosive) and the number to<br />

the right <strong>of</strong> the decimal is the division number. In this case,<br />

“.6” indicates an extremely insensitive explosive.<br />

<strong>Module</strong> 1: <strong>Regulations</strong> 1-25

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