Enlisted Surface Warfare Specialist (ESWS) Engineering Practice Test 2025 - Free ESWS Engineering Practice Questions and Study Guide

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Which color signifies HP oxygen charging?

Red

Green

The color that signifies high-pressure (HP) oxygen charging is green. In the context of military and industrial applications, color codes are used to indicate the contents of gas cylinders, ensuring safety and proper handling. Green is universally recognized for oxygen in many safety guidelines and standards.

Using green for HP oxygen charging helps personnel easily identify the gas involved and reduces the risk of mix-ups with other gases. This is particularly critical when dealing with high-pressure systems, as oxygen can support combustion and affect other operations if improperly handled. Therefore, the consistency of using green as a color code for high-pressure oxygen enhances safety and operational efficiency in environments where this gas is used frequently.

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Blue

Yellow

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