sec.224Gas alarm levels

### sec.224 Gas alarm levels An underground mine’s principal hazard management plan for gas management must state the values and ratios for gas, mentioned in section 222 (2) (b) , that are gas alarm levels. The mine must have a standard operating procedure for changing the gas alarm levels, including recording the following details— the nature of, and reason for, the change; the date the change was made; the name of the person who made the change. s 224 amd 2024 SL No. 167 s 30 (sec.224-ssec.1) An underground mine’s principal hazard management plan for gas management must state the values and ratios for gas, mentioned in section 222 (2) (b) , that are gas alarm levels. (sec.224-ssec.2) The mine must have a standard operating procedure for changing the gas alarm levels, including recording the following details— the nature of, and reason for, the change; the date the change was made; the name of the person who made the change. - (a) the nature of, and reason for, the change; - (b) the date the change was made; - (c) the name of the person who made the change.