Which factor could lead to ineffective maintenance plans?

Ineffective maintenance plans can arise from inaccurate defect sizing results because such inaccuracies can lead to misdiagnosis of equipment conditions. When defects are not sized correctly, the severity and nature of the problem may not be properly understood, resulting in inappropriate maintenance actions being taken.

For instance, if a technician incorrectly sizes a defect and concludes it is minor when it is actually significant, the necessary repair or replacement may be delayed or overlooked entirely. Conversely, if a defect is overestimated, unnecessary maintenance may be performed, wasting time and resources. Accurate defect sizing is crucial for effective planning and prioritization of repair work, ensuring that maintenance efforts are effectively aligned with the actual condition of the equipment. This highlights the central role that precise data plays in maintaining the reliability and safety of equipment and systems.