What must be done before and after 48 hours of continuous suppression work?

Before and after 48 hours of continuous suppression work, it is essential to adhere to the principle of minimum off-duty hours to ensure firefighters are not overworked and remain fit for duty. This practice helps prevent fatigue, which can significantly impair performance, decision-making, and safety.

The implications of working extended hours without appropriate rest can lead to increased risk of accidents and injuries, not only to the firefighters themselves but also to the individuals they are trying to protect. By enforcing minimum off-duty hours, it allows personnel time to recuperate physically and mentally, ensuring they are fully alert and capable when called upon for the next response.

The other options might be important in their own contexts. Mandatory training could enhance skills, a day of rest is beneficial for recovery, and monitoring by a supervisor can ensure safety and adherence to protocols, but none replace the critical need for adequate recovery time following such intense work. These measures should complement the fundamental requirement of ensuring firefighters can perform their duties effectively and safely.