Argus performed Unit K7 upgrades to HP and HRH systems. On the HRSG, we added an expansion loop to the HP steam side and the HRH side of the unit along with upgrading all the drains and drain pots on the unit. All piping received between 3″ thick to 7-1/2″ thick calcium silicate pipe covering with .020 stucco embossed aluminum jacketing. All the large bore piping received 3/4″ SS banding both on the calcium silicate and aluminum jacketing finish. The small bore receive 1/2″ SS banding on both the pipe insulation and aluminum jacketing.