CDC 3E1X1 Volume 1 Practice Test 2026 – Complete Exam Preparation

Question: 1 / 400

What is the first step in disassembling an oxyacetylene outfit?

Ensure the gas supply is off

The first step in disassembling an oxyacetylene outfit is to ensure the gas supply is off. This is a crucial safety measure because working with flammable gases such as oxygen and acetylene poses a risk of fire or explosion. By turning off the gas supply before beginning any disassembly, you eliminate the possibility of gas leaking during the process, which could lead to dangerous situations.

Turning off the gas supply protects both the technician and the surrounding environment. Once this precaution is taken, the subsequent steps in disassembling the outfit can proceed safely, such as loosening the union nuts, removing the torch from its holder, or checking for leaks, all of which carry less risk when the gas supply is secured.

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Loosen the union nuts

Remove the torch from its holder

Check for leaks

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