Storage of eggs
Eggs should not be stored at a packing station for more than 3 days. When the temperature fluctuates eggs are going to sweat. A packing station must be well isolated so that the temperature does not fluctuate too much. Different lots should be kept separate, so there will not be cross contamination between eggs from different farms.
In European countries refrigeration of eggs is not common, except in Sweden. In other countries (e.g. USA) eggs should be cold stored up till retail level.
The European Food Safety Authority (EFSA) has published a report on the refrigerated storage of eggs. The abstract of this report is presented here.