Which type of outage is allowed to be postponed to the following Monday morning at 0800?

The type of outage that can be postponed to the following Monday morning at 0800 is a maintenance outage. Maintenance outages are typically scheduled and planned in advance, allowing for flexibility in the timing of the work. This means that, if necessary, they can be rescheduled without significant operational disruption.

Maintenance outages are focused on performing routine or preventive maintenance tasks aimed at keeping generating units in good working condition. Since these are not immediate safety or reliability concerns, as can be the case with emergency or forced outages, they have a little more leeway in timing. In contrast, emergency outages arise from unplanned issues that must be addressed immediately, while forced outages result from unexpected failures. Planned outages, while similar to maintenance outages, usually have a more rigid schedule due to operational dependencies that can't easily accommodate delays.

Thus, the ability to postpone a maintenance outage to a specific time highlights the planned nature of this type of work, allowing for coordination with other operational activities and ensuring minimal impact on overall system reliability.