Pipe Materials in Calgary Presentation Slide #23

After manufacture and deployment began in Calgary in 1975, Canron and Shaw also sold a lot of YDI to other Canadian municipalities. However, Jim Bouck actually counselled many smaller towns to not bother with the extra expense of YDI - not if they couldn't install it properly, or couldn't run a consistent cathodic protection maintenance program afterwards.
The YDI shown here is ready to go into the trench. You'll note it's resting on tires to prevent any coating scratches. Before it goes in, we jeep it again in the field - use a high voltage to check it for any breaks in the coating. We use sand, pea gravel, granulite or other clean fills for bedding and the first half-metre of the pipe zone. Then we check the current flow at the anode test points forever, reinstalling the anodes every 20 years. It's a lot of trouble.