Which statement about the ventilation of...

Question 1 / 2707066636ee728f7522a1c518afd

Question 1 of 2707066636ee728f7522a1c518afd

Which statement about the ventilation of bulk coal is TRUE?

Question 1 of 27070

Which statement about the ventilation of bulk coal is TRUE?

🔍 Key Concepts

• Coal as a bulk cargo and its tendency for self-heating / spontaneous combustion • Difference between surface ventilation and through-ventilation in cargo holds • How ventilation can affect both methane accumulation and oxygen supply in coal cargoes

💭 Think About

• Ask yourself: If you add fresh air through a coal cargo, what happens to both the methane content and the oxygen available for combustion? • Consider whether coal heating usually starts at the surface or deep inside the stow, and which kind of ventilation would most affect that area. • Think about what the main danger is when carrying coal: Is it lack of oxygen, buildup of gas, self‑heating, or all of these? How would ventilation change each risk?

✅ Before You Answer

• Check which options describe continuous through‑ventilation versus limited/surface ventilation. • Verify which option ignores the fact that oxygen can increase the risk of self‑heating in coal cargoes. • Eliminate any option that suggests a practice that would directly feed air to the interior of a self‑heating cargo.

Question 1 of 27070

Which statement about the ventilation of bulk coal is TRUE?

Coal should be surface ventilated only.

Coal should not be ventilated; all oxygen should be excluded from the cargo.

Coal should be through-ventilated to remove methane and reduce the heat of spontaneous combustion.

Coal should be ventilated only if temperatures in the center of the cargo exceed 125°F.

Question 1 / 2707066636ee728f7522a1c518afd

Question 1 of 2707066636ee728f7522a1c518afd

Which statement about the ventilation of bulk coal is TRUE?

Back

Question 1 of 27070

Which statement about the ventilation of bulk coal is TRUE?