What is an important step before conducting maintenance on hoses?

Before conducting maintenance on hoses, ensuring that all pressure sources are disconnected is crucial for safety. Hoses in a Diver Life Support System may be pressurized with air or other gases essential for safe underwater operations. If maintenance is performed while the hoses are still under pressure, it increases the risk of injury due to potential explosions or sudden releases of gas that could occur during disconnection or repairs. Taking this precaution helps to create a safer work environment and prevents accidents that could lead to harm for the maintenance personnel or damage to the system itself.

This principle of ensuring safety before maintenance applies broadly across various systems involving pressurized components, highlighting the importance of a thorough and cautious approach in maintenance procedures.