Which of the following is required to be posted in the CHT pump room?

The requirement to post "No smoking signs" in the CHT (Collection, Holding, and Transfer) pump room is essential due to safety regulations related to the presence of flammable materials and the potential hazards associated with sewage systems. CHT system areas are typically subject to the presence of volatile gases and odorous materials, which can pose a fire and explosion risk if exposed to an open flame or spark from smoking.

In addition to preventing fire hazards, these signs serve as an immediate reminder to personnel about the importance of maintaining a safe working environment. This is crucial in maritime operations, where space is limited and the potential for dangerous situations can quickly escalate without proper safety protocols in place. Ensuring that all personnel are aware of these protocols through clearly visible signage helps to foster a culture of safety on board the vessel.

Other options, while important in their own right, do not address the immediate need for fire safety in the CHT pump room context. Water quality reports, inspection schedules, and safety procedures manuals have their places in ensuring overall safety and compliance, but the urgency of preventing fire hazards specific to smoking makes "No smoking signs" the correct requirement in this scenario.