Enriched Air Nitrox (SC-EAN) Practice Test – Prep, Study Guide & Questions

Using silicone lubricants in scuba equipment that is exposed to high concentrations of oxygen can result in fire and explosion. This is primarily due to the fact that silicone can become unstable when exposed to certain conditions, particularly elevated levels of oxygen, which can significantly increase the risk of combustion.

In environments where enriched air nitrox, which has a higher oxygen content than regular air, is used, any lubricant that is not specifically rated for high-oxygen use can ignite. This is particularly dangerous in underwater environments where ignition sources may be limited, yet the consequences of a fire or explosion can be catastrophic, potentially leading to serious injury or death.

The other choices do not accurately reflect the risks associated with using inappropriate lubricants in high-oxygen scenarios. While damage to the equipment or a bad taste might occur from improper materials, the most critical and dangerous outcome is the potential for a fire or explosion. Therefore, it is essential for divers and equipment manufacturers to use lubricants that are specifically designed and rated for high-oxygen applications to ensure safety.