Which is the flammable range of Bunker C...

Question 1 / 2707066636eec28f7522a1c51c76d

Question 1 of 2707066636eec28f7522a1c51c76d

Which is the flammable range of Bunker C mixed with air?

Question 1 of 27070

Which is the flammable range of Bunker C mixed with air?

🔍 Key Concepts

• Typical flammable (explosive) limits for heavy fuel oils / bunker fuels in air • Difference between very lean mixtures (too little fuel) and very rich mixtures (too much fuel) • How the Lower Explosive Limit (LEL) and Upper Explosive Limit (UEL) are usually expressed for hydrocarbon vapors

💭 Think About

• Think about where most hydrocarbon fuels (like gasoline, diesel, fuel oils) have their LEL and UEL when expressed as a percentage by volume in air. • Which answer choices represent mixtures that are too lean to burn, within a normal combustible range, or so rich that they would not support combustion? • Compare these percentages to what you know about the flammable ranges of common cargo vapors and tank atmospheres from tankerman or fire-fighting study materials.

✅ Before You Answer

• Make sure you remember that LEL is usually a small percentage, not a fraction of a percent for most hydrocarbon vapors. • Check which range best matches a narrow band around just a few percent by volume, which is typical for many fuel vapors. • Eliminate any ranges that start so low they would be practically non-combustible or so high they would be too rich to burn in normal air.

Question 1 of 27070

Which is the flammable range of Bunker C mixed with air?

0% to 1% by volume

1% to 5% by volume

5% to 10% by volume

10% to 20% by volume

Question 1 / 2707066636eec28f7522a1c51c76d

Question 1 of 2707066636eec28f7522a1c51c76d

Which is the flammable range of Bunker C mixed with air?

Back

Question 1 of 27070

Which is the flammable range of Bunker C mixed with air?