How should closed vessels that cannot be removed be managed to prevent explosion?

Venting closed vessels that cannot be removed is a critical safety practice to prevent explosions. When gases or vapors are generated within a sealed vessel, pressure can build up quickly. If this pressure exceeds the vessel's design limits, it can lead to a catastrophic failure, resulting in an explosion.

By venting the vessel, you allow for the safe release of gases and vapors, thereby maintaining pressure at a manageable level. This approach is essential in environments where temperature changes or chemical reactions may occur, as these factors can increase pressure inside the vessel. Vents ensure that there is a pathway for these gases to escape, significantly reducing the risk of pressure buildup and subsequent explosion.

The other methods presented do not adequately address the issue of pressure buildup inside the vessel and could even potentially worsen the situation. Sealing the vessel would trap gases, while filling it with water may not be appropriate for all types of vessels or contents, and disconnecting parts could create other hazards. Therefore, venting is universally recognized as the safest practice for managing closed vessels that cannot be removed.