Husky's pipelines are designed, constructed, operated and maintained in accordance with the Canadian Standards Association (CSA) standards for oil and gas pipeline systems.
The pipeline system is divided into sections that can be isolated by remotely controlled block valves, which are tested annually.
Pipelines are monitored and controlled from a 24-hour per day control centre located in Lloydminster. The computer control system monitors the operating characteristics of the pipeline, including pressures, temperatures and flow rates and will automatically alert the control centre operator should a leak be suspected.
Husky has a comprehensive pipeline integrity program that includes cathodic protection of the entire pipeline system, annual testing, internal inspection surveys on a three-to-seven year cycle, corrosion chemical injection, pipeline cleaning, and aerial surveillance of all pipeline right-of-ways every two weeks.
Husky's heavy crude oil pipeline systems accommodate heavy oil production from the Lloydminster area and the production of bitumen from its oil sands projects.
The system carries production from the Tucker heavy oil thermal project and shipments from third parties. Husky's Hardisty terminal currently handles product ranging from light and synthetic to blended heavy crude oil, and accounts for approximately 25 percent of the total volume of crude oil exports from Western Canada.
Husky's Alberta heavy oil pipeline system has two main lines: Cold Lake and Mainline.
The Cold Lake System ships heavy crude blend into the Lloydminster Terminal. From the terminal, the heavy crude product is delivered to Husky's Upgrader and asphalt refinery or transferred to the Hardisty Terminal for external markets. Diluent products are received from the Upgrader, refinery and Hardisty and are used to blend the heavy crude received from the Cold Lake System and Saskatchewan Gathering System.
The Mainline Pipeline System moves products between the Lloydminster and Hardisty terminals. This system moves two segregated heavy crude blends as well as synthetic crude from the Upgrader to Hardisty. It also transports diluent from Hardisty to Lloydminster.
Three smaller gathering systems - Battle River, Wainwright and Kinsella - with a total of 14 oil batteries, tie into the Mainline system to deliver lighter-density heavy crude blends.
Husky's Saskatchewan heavy oil pipeline system, known as the Saskatchewan Gathering System, delivers heavy crude oil blend to the Lloydminster Terminal. Diluent from the Lloydminster Terminal is received at the pumping stations and is used to blend the heavy crude oil prior to it being pumped to the terminal.
The Husky Border Pipeline handles products that include crude oil, diluent, distillates and synthetic crude oil from Husky's heavy oil upgrader.
The pipeline system is marked along its length with warning signs identifying the pipeline owner and emergency numbers.
Husky actively participates in organizations engaged in encouraging and promoting safety around buried pipelines.
Major additions or expansions that have public impact undergo a public consultation process prior to permit application and construction.