Which of the following would not necessitate a repair of a plank?

A split plank with no sign of impact does not necessarily require repair because it may not compromise the structural integrity of the plank or the overall functionality of the container. Such splits could occur due to natural aging or environmental factors, which do not always indicate that the plank is at risk of failure or that it will lead to further damage. In many cases, if the split does not pose a risk for leakage, structural compromise, or safety hazards, it can be tolerated or left unaddressed.

In contrast, options like a plank leaking light, loose planks, and those showing significant wear typically indicate issues that could lead to more serious problems. A plank that is leaking light may suggest that it is not sealing properly, potentially allowing for the ingress of moisture or contaminants. A loose plank can lead to structural instability and could affect the overall strength of the container. Similarly, significant wear may affect the performance and durability of the plank, necessitating repairs to maintain safety and functionality.