What is the generally accepted method of...

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Question 1 of 205eccef9ebacbc34ba4d465bf

What is the generally accepted method of determining whether the atmosphere within a cargo tank is explosive, too rich, or too lean to support combustion?

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5eccef9ebacbc34ba4d465bf

What is the generally accepted method of determining whether the atmosphere within a cargo tank is explosive, too rich, or too lean to support combustion?

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🔍 Key Concepts

• Fire triangle (fuel, oxygen, ignition source) and what "too rich" or "too lean" mean for combustion • The purpose and normal shipboard use of explosimeters / combustible gas indicators versus oxygen analyzers • Why open flames and unnecessary entry into suspect spaces are prohibited in tank atmospheres

💭 Think About

• Think about which option represents a standard, routine shipboard test that can be done frequently and safely before tank entry or hot work. • Ask yourself which device is designed to show whether the mixture is in the flammable (explosive) range, below it (too lean), or above it (too rich). • Consider which options would be unsafe or impractical as a first-line test of tank atmosphere on a ship.

✅ Before You Answer

• Identify which choice refers to equipment that directly measures percentage of the lower explosive limit (LEL) or flammable range of gases. • Eliminate any method that involves introducing an ignition source into a potentially flammable atmosphere. • Eliminate any method that requires personnel entry into an untested tank, which violates enclosed space entry and gas-freeing safety practices.

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Question 1 of 205eccef9ebacbc34ba4d465bf

What is the generally accepted method of determining whether the atmosphere within a cargo tank is explosive, too rich, or too lean to support combustion?

Back

Question 1 of 20

5eccef9ebacbc34ba4d465bf

What is the generally accepted method of determining whether the atmosphere within a cargo tank is explosive, too rich, or too lean to support combustion?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

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