9.4.1 NFPA 30 (2015 Ed.) does not regulate containers for IIIB liquids unless the building is considered protected storage, see the Annex A note. One possible interpretation is that if one wants to bring IIIB liquids into a sprinklered warehouse they would have to use approved containers, like listed nonmetallic IBCs, and ensure the sprinkler system meets NFPA 30 design tables and general purpose warehouse rules, no matter how small the amount. While they are free to use unlisted plastic IBCs in a nonsprinklered building as long as the unprotected storage limits are observed. What about the situation where someone wants to bring a limited amount of IIIB liquids into a warehouse sprinklered to a lower hazard not meeting NFPA 30 protected storage?
Taken literally, its seems that NFPA 30 is more restrictive on containers for protected storage than non-protected, which seems counter-intuitive.
Any help with this issue would be much appreciated.