GB 50974-2014 第4.3.5条
| **** | **Make-up water and freeze protection for the fire water tank.** The hotel's fire water tank should be provided with reliable make-up water facilities (e.g., a municipal make-up water pipe), and the make-up time should not exceed 48 hours. In cold regions, freeze protection measures (e.g., insulation, electric heat tracing, or indoor installation) should be taken for the tank and piping to prevent freezing in winter. |