Item 2 (detailed drawing of access gallery) Could you provide steel work marking plans and elevations of the boiler steel structure and deaerator steel structure from the firing floor (where the gas train is to be located nominally EL8.0) to the level of the deaerator (ie. above the Secondary air header at EL15.8). Could you provide the drawings (or sketch) of the galleries that you have installed. This is so we can provide a layout drawing of the piping with important construction notes to enable you to run the piping on site. This will also confirm our understanding of the intended pipe run and the assumptions we have made for pressure losses.