In addition to identifying the most appropriate access point, the precise location of the incident within the infrastructure should be found to:
- Identify the likely travel distances and working duration of personnel
- Identify or anticipate any obstructions that may affect access
- Factor in the effects of fatigue due to extended travel distances to and from the scene of operations, especially when carrying equipment
- Consider using suitable lifts, vehicles or on-site machinery to transport personnel or equipment
Using lights, markers or barrier tape should be considered to indicate the extent of the inner cordon within complex structures, or where there are no distinguishing way finders or location indicators. Similarly, these items should be considered for indicating the door or level that leads to the way out along the route to the surface. This may be particularly important if there is a shaft below ground that is part of a larger above ground building