Your chemical tanker was built to the IBC Code and has foam as the main firefighting medium. During one of your safety meetings you review the properties of foam as an extinguishing agent. Which of the following is a correct statement that would be appropriate to share during the meeting?
• Foam as an extinguishing agent on chemical tankers (smothering vs cooling effect) • Difference between fire classes (A, B, C) and where foam is normally recommended • Common advantages and limitations of foam in protecting firefighters
• Think about what foam physically does once it is applied on a burning liquid surface—does it mainly cool, smother, or both, and to what degree? • For which classes of fire is foam typically recommended as the primary agent, and for which classes is another agent (like dry chemical or CO₂) usually preferred? • Would standard firefighting foam normally be described as producing toxic vapors to the point it is highlighted as a key hazard in basic safety briefings?
• Verify for which fire classes (A, B, C) foam is generally considered suitable, and which ones it is not. • Consider whether foam’s main strength is oxygen exclusion (smothering) or cooling, especially in terms of protecting firefighters from heat. • Check typical safety data / training materials to see if standard firefighting foam is described as significantly toxic in normal use conditions.
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