33. According to regulations, how many hand portable fire extinguishers are required in the cargo tank area of an unmanned, cargo pump-equipped tank barge (90 GT) while engaged in transferring grade B flammable liquids?

Regulations require two B-II or post-2017 two 40-B:C hand portable fire extinguishers in the cargo tank area of an unmanned, cargo pump-equipped tank barge transferring grade B flammable liquids; verify the specific CFR section in current regulations.