The reading of a combustible gas indicator...

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Question 1 of 205eccef9ebacbc34ba4d465ad

The reading of a combustible gas indicator indicates the percentage of the __________.

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5eccef9ebacbc34ba4d465ad

The reading of a combustible gas indicator indicates the percentage of the __________.

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🔍 Key Concepts

• Lower Explosive Limit (LEL) vs Upper Explosive Limit (UEL) • What a combustible gas indicator (CGI) is actually calibrated to measure • Difference between actual gas concentration in air and limits of flammability

💭 Think About

• Is the instrument telling you how much gas is present, or how close that atmosphere is to becoming flammable/explosive? • Think about what value a safety watchstander really needs to know before allowing hot work or entry into a space. • How are readings usually expressed on a CGI scale: as % of what reference point?

✅ Before You Answer

• Check which choices talk about a limit (a boundary where gas becomes dangerous) vs the actual gas concentration. • Recall that CGI readings are often shown as % of LEL, not as % gas-by-volume directly. • Eliminate any options that refer to upper explosive limit or to gases that are specifically nonflammable.

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Study

Question 1 of 205eccef9ebacbc34ba4d465ad

The reading of a combustible gas indicator indicates the percentage of the __________.

Back

Question 1 of 20

5eccef9ebacbc34ba4d465ad

The reading of a combustible gas indicator indicates the percentage of the __________.

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

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed