Full definition
Step-by-step document describing how to perform a maintenance task safely, efficiently and in a standardized manner. Minimum content: objective, scope, required PPE, tools and materials, safety precautions (LOTO, hazards), numbered step sequence, adjustment values and torques, acceptance criteria and record. Referenced in the work order. Reduces variability between technicians, human errors and accidents. Foundation of world-class maintenance. Annual review or after incidents. Reference standard: ISO 9001 (process documentation).