catering service business units that use liquefied petroleum gas shall abide by the following provisions:

(1) they shall use liquefied petroleum gas supplied by units that have obtained gas business licenses, sign a safe gas supply contract, and keep gas purchase vouchers after each gas purchase. It is strictly forbidden to purchase liquefied petroleum gas from units or individuals without gas business qualifications.

(2) It is forbidden to store and use liquefied petroleum gas in high-rise buildings, basements, semi-basements and places with poor ventilation, and it is forbidden to store and use liquefied petroleum gas cylinders in dining areas or use gas to directly heat food.

(3) The gas-phase bottle and gas-liquid two-phase bottle are specially used. The cylinders in use, spare cylinders and empty bottles should be placed separately or separated by firewalls.

(4) LPG cylinders and gas burning appliances shall not be arranged in the same room, and inflammable and explosive articles, corrosive articles and open flames shall not be piled up in the room where steel cylinders are placed and gas is used.

(5) Replace the pressure reducer and sealing ring of LPG cylinders regularly and keep records. The normal service life of the pressure reducer of LPG cylinders shall not exceed 5 years, and the normal service life of sealing ring shall not exceed 3 years.

(6) When the total weight of bottles exceeds 111 kg (equivalent to 2 bottles of 51 kg or more than 7 bottles of 15 kg gas cylinders), a special gas cylinder room shall be set up; When the total weight of stored bottles is more than 421kg, the gas cylinder room shall be set in an independent building, and the distance from other civil buildings shall not be less than 11 meters; The height between gas cylinders shall be no less than 2.2m, and there shall be no heating ditch, floor drain and other underground structures.