The installation of the panels was pre ceded by the preparation of a detailed safety plan that identified the risks (such as workers or equipment falling over the edges of the roof, workers or equipment slipping down the sloped roof, or the glass roof skylights breaking with the risk of pieces of glass falling into the ware house), which allowed us to identify all of the preventive and protective meas ures to be taken to ensure that every ac tivity carried out put safety first, according to standard practice at the Refinery.