What is the Navy's standard for hydrogen sulfide (H2S) exposure?

The Navy's standard for hydrogen sulfide (H2S) exposure is set at 10 parts per million (ppm). This standard is established to ensure the safety and health of personnel who may be exposed to this hazardous substance. Exposure to hydrogen sulfide can lead to serious health effects, including irritations of the eyes, nose, and throat, and higher levels can be particularly dangerous and even fatal. By setting the exposure limit at 10 ppm, the Navy aims to minimize the risk of harmful effects while allowing operational flexibility in environments where H2S might be present. This standard is rooted in research and guidelines from health and safety organizations, ensuring that it reflects a balance between safety and practicality in various operational contexts.