What is the difference between routine maintenance and urgent repair in iROC practice?

• A. Routine maintenance is unplanned; urgent repair is planned.
• B. Routine maintenance is scheduled preventive work; urgent repair addresses a detected safety-critical fault requiring immediate attention before operation.
• C. They are the same.
• D. Urgent repair is optional.

Answer: (B)

The key idea is the timing and purpose of the work. Routine maintenance is planned preventive work scheduled to keep equipment operating reliably and to prevent failures. It happens on a set schedule and during planned downtime, focusing on things like inspections, lubrication, part replacements, and adjustments before problems arise.

Urgent repair, on the other hand, is triggered by a detected fault that could be safety-critical or prevent operation. It requires immediate attention before the system can be used again, aiming to fix a fault that could cause harm or a major disruption if left unaddressed.

So the correct choice captures this distinction: routine maintenance = planned preventive work, while urgent repair = immediate action for a safety-critical fault before operation. The other options mix up planning and urgency, suggest they’re the same, or imply urgent repairs are optional, which isn’t how these practices work.