Prioritization of Work – NUCREC Method

Prioritization of work is very important because it affects how we utilize our labor.

Priority is defined as "The fact or condition of being regarded or treated as more important than others" in the Oxford Dictionary and is defined as "coming before in time, order, or importance" in the Franklin Dictionary.

When we prioritize a maintenance work, we must take into account its influence to the whole company, considering its consequence if the work is not done. If work prioritization is done correctly and accurately, we can plan more work and we can schedule and execute the work more efficient.

Priority = Need Urgency X Customer Rank X Equipment Criticality

The product of the ratings gives the total priority. That number will range from 1 (which is 1 x 1 x 1) to 64 (4 x 4 x 4). The lowest number work will be first priority. A ‘‘1’’ priority is a first-class emergency. When several work requests have the same priority, labor and materials availability, locations, and scheduling fit may guide which is to be done first.

Reference : Maintenance Fundamentals (Plant Engineering), by R. Keith Mobley

Need Urgency ratings
  1. Emergency; safety hazard with potential further damage if not corrected immediately; call back for unsatisfactory prior work
  2. Downtime; facility or equipment is not producing revenue
  3. Routine and preventive maintenance
  4. As convenient, cosmetic.
Customer Rank ratings
  1. Top management
  2. Production line with direct revenue implications
  3. Middle management, research and development facilities, frequent customers
  4. All others.
Equipment Criticality ratings
  1. Utilities and safety systems with large area effect
  2. Key equipment or facility with no backup
  3. Most impact on morale and productivity
  4. Low, little use or effect on output.