Millwright Level 1 Practice Exam

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Prepare for the Millwright Level 1 Exam with our comprehensive quiz. Engage with multiple choice questions designed to test your knowledge and skills relevant to the millwright trade. Achieve your certification with confidence!

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What is the maximum safe working pressure for acetylene?

10 PSI
15 PSI
20 PSI
25 PSI

The correct answer is: 15 PSI

The maximum safe working pressure for acetylene is 15 PSI. This limit is established due to acetylene's unique properties and the risks associated with its use. Acetylene is a highly flammable gas, and when stored in high-pressure conditions, it can become unstable and dangerous. Exceeding this pressure can lead to the possibility of a hazardous situation, including the risk of an explosive decomposition. For safety purposes, acetylene is stored in cylinders under pressure, but the pressure must not exceed 15 PSI to ensure safe handling and usage, especially in applications like welding and cutting. Therefore, understanding and adhering to this maximum pressure is essential for operating safely with acetylene.