Basic principles of fire protection According to the characteristics of the fire development process, the following basic technical measures shall be taken: (1) use non combustible solvent instead of combustible solvent. (2) closed and negative pressure operation. (3) ventilation and dust removal. (4) inert gas protection. (5) use fire-resistant building materials. (6) strictly control fire Source. (7) prevent the spread of flame. (8) control the possible development scale of fire. (9) organize the training of fire brigade and equip corresponding fire equipment.