Which statement is TRUE concerning...

Question 1 / 205eccef9ebacbc34ba4d465e7

Question 1 of 205eccef9ebacbc34ba4d465e7

Which statement is TRUE concerning combustible gas indicators?

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Question 1 of 20

5eccef9ebacbc34ba4d465e7

Which statement is TRUE concerning combustible gas indicators?

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🔍 Key Concepts

• Combustible gas indicators (CGIs) measure gas concentration as a percentage of the lower explosive limit (LEL) • CGIs have limits in low-oxygen (oxygen-deficient) atmospheres • Proper tank testing requires multiple samples at different levels and locations

💭 Think About

• Think about what a combustible gas indicator is actually designed to measure: is it explosion probability, gas concentration, or oxygen content? • Consider how the presence or absence of oxygen might affect an instrument that relies on burning (oxidation) a sample to get a reading. • When checking a tank for gas hazards, ask yourself whether one reading from one spot can safely represent the entire tank atmosphere.

✅ Before You Answer

• Verify how a CGI scale is usually labeled (look for % of LEL vs. probability of explosion). • Check whether a standard CGI can or cannot indicate oxygen deficiency on its own. • Recall safe tank-entry procedures and whether they call for single-point or multi-point atmosphere sampling.

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Question 1 of 20

Which statement is TRUE concerning combustible gas indicators?

They are calibrated to read the percentage chance of explosion.

They will detect a lack of oxygen.

One sample of air is adequate to test a tank.

They do not work properly where there is a lack of oxygen.

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Question 1 / 205eccef9ebacbc34ba4d465e7

Question 1 of 205eccef9ebacbc34ba4d465e7

Which statement is TRUE concerning combustible gas indicators?

Back

Question 1 of 20

5eccef9ebacbc34ba4d465e7

Which statement is TRUE concerning combustible gas indicators?

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?

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