Maybe you can start from revision of your hazard analysis. Are there steps that are already implemented that can prevent braking of packaging, how many employees are handling with the product and have visual look at the same.
If there is a lot of visual check during the production process, you did not had a complaints in previous year, maybe Rendon check on every 2 hours would be enough.
Think about it and let us know what you find is best solution.
I hope I helped :)
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