(a) The regulated entity shall develop, maintain, and use a personnel accountability system that provides for a rapid accounting of all personnel at an emergency incident.     
      (b) The accountability system shall:      
        (1) require all fire protection personnel be trained in the use of the accountability system;       
        (2) require that the fire protection personnel accountability system be used at all incidents;       
        (3) require that all fire protection personnel operating at an emergency incident to actively participate in the personnel accountability system; and       
        (4) require that the incident commander be responsible for the overall personnel accountability system for the incident.       
      (c) The fire department shall be responsible for developing the system components required to make the personnel accountability system effective.     
      (d) The personnel accountability system shall meet the minimum standards required by the             NFPA 1561, Standard on Emergency Services Incident Management System and Command Safety            or its successor.     
     Source Note:        The provisions of this §435.13 adopted to be effective March 24, 2002, 27 TexReg 2242; amended to be effective December 8, 2022, 47 TexReg 8048