Curious what other plants might be doing. At our bottling facility we use slat-style conveyor belts to move around closed, sealed, products. So in general other than cleaning the contact side of the slats regularly to prevent buildup, we don't have a super defined sanitation program for these like we would a DPC surface.
Does anyone else use these, and do you have a "deep cleaning" procedure or interval where you remove the belt and clean the excess grease/dust from the rollers and underside of the slats? I'm looking at this as a preventative maintenance opportunity/environmental control but at the same time the impact is pretty huge to remove and replace 200 yards of conveyor, and I imagine the nooks and cranny's underneath would need a toothbrush or hot pressure washer to get properly cleaned.
Let me know how you handle difficult conveyors or NPC conveying systems!