Since quick lime is inorganic, I don't believe any fine dust released into the air would be explosive; so only the bags could catch fire. I would not use an automatic sprinkler system for obvious reasons. Also prohibit smoking and ensure that there is no spark generated from forktruck, and use explosion proof electrical switches, lighting, etc..; altho I am not sure if any NFPA material require such item, so double check your NFPA literature. For clean up tools such as shovels, I would look for non-sparking, if you can find them. With the situation described above, all safety measures that you can think of would be a great asset. And don't forget safety training with the personel.