When would you secure Circle William fittings?

Securing Circle William fittings is crucial during damage control scenarios and in the event of a Chemical, Biological, or Radiological (CBR) attack. These fittings are typically used to maintain watertight integrity and prevent the influx of water or other hazardous materials into the ship's compartments. In situations involving damage or a CBR attack, ensuring these fittings are secured helps contain any potential threats, reduces the risk of contamination or flooding, and protects the safety of personnel on board. This action is part of a larger protocol aimed at preserving the ship's operational capability and safeguarding crew members during emergencies.

In contrast, securing these fittings is not usually necessary during routine maintenance, although it may occasionally be prudent. Drills serve to practice readiness rather than respond to actual threats, so securing the fittings during drills is not mandatory. While addressing fluid spills is important, it doesn’t mandate the same level of urgency as securing them during a significant damage or CBR situation.