All activities involving, and all storage of, flammable and explosive materials shall be provided at any point with adequate safety devices against the hazard of fire and explosion and adequate fire fighting and fire suppression equipment and devices standard in the industry. Such equipment and devices shall be subject to the approval of the City Fire Chief. Burning of waste materials in open fires is prohibited at any point. (Ord. 1212 § 1, 1969; prior code § 33.703(E)).