LPG containers shall not be used in a cellar, basement, pit or other area below grade where heavier-than-air gas might collect. LPG containers shall not be used in an above-grade underfloor space or basement unless such location is provided with an approved means of ventilation.
Portable LPG containers shall not be allowed in Group E and I occupancies, except as set forth in this section and the rules. In Group E and I occupancies, portable LPG containers are allowed to be used for research purposes. Such containers shall not be used in classrooms. Such containers shall not exceed 16.4 ounces (0.465 kg) of LPG. Where more than one such container is present in the same room, each container shall be separated from other containers by a distance of not less than 20 feet (6096 mm).
Portable LPG containers may be brought into a building on a temporary basis for use in conducting a demonstration, or in connection with a trade show or other public exhibition. Such use, and incidental storage and handling, shall be in accordance with the rules, and the containers shall be promptly removed from the premises upon completion of the demonstration or exhibition. Where more than one LPG container is in use in the same room, and are fueling different devices or equipment, the containers shall be separated from each other by a distance of not less than 20 feet (6096 mm).
Use of LPG for commercial cooking is allowed only when authorized by this code or the rules.