Span gas is used aboard liquefied natural...

Span gas is used aboard liquefied natural...

Question 1 of 27070

Q

Span gas is used aboard liquefied natural gas carriers to __________.

A

inert the barrier spaces

B

odorize the cargo

C

calibrate the gas leak detectors

D

detect leaks in cargo piping

Question 1 / 2707066636ee728f7522a1c518a04

Question 1 of 2707066636ee728f7522a1c518a04

Span gas is used aboard liquefied natural gas carriers to __________.

Question 1 of 27070

Study area:

Study area:

Q

Span gas is used aboard liquefied natural gas carriers to __________.

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🔍 Key Concepts

• Span gas purpose in gas detection systems • Difference between inerting, odorizing, and calibrating • How gas leak detectors on LNG carriers are checked for accuracy

💭 Think About

• Ask yourself: Is span gas something you add to the cargo/space, or is it something you feed into an instrument? • Which option sounds like a maintenance/testing function rather than a cargo-handling function? • On an LNG carrier, how do you make sure a gas detector’s readings are trustworthy before relying on them in a hazardous area?

✅ Before You Answer

• Verify whether span gas is a known reference gas mixture used with instruments. • Check which choice describes a process done regularly during instrument calibration or testing, not routine cargo operations. • Eliminate options that involve permanently changing the condition of spaces or cargo, and focus on those describing instrument accuracy.