Technical Rescue Unit Rescue Ambulance

It all looks very serious but I gather it's just a precaution. There is work being done in the electricity cable tunnel that runs from the former McDonald Road Generating Station to somewhere in the vicinity of Elm Row. I can find very little information on the generating station. It was designed by John Cooper and may have opened in 1899 and, "Originally designed as an electric lighting station, used as a tramway power station and now in use as a switching station." (Historic Scotland).