Binnie (Omni Engineering) was engaged to perform upgrades to the existing onsite coal dust suppression system. The design focused on improving the serviceability and reliability of the system and reducing the labour required for wetting the stockpiles. The system can wet the stockyard piles by an active and a passive wetting procedure utilizing yard spray cannons (agricultural water sprinklers) and tower sprays (misting towers), respectively.
The dust suppression upgrade included the construction of three containerized valve distribution mechanical rooms, a containerized pump house and MCC electrical room, thirty-two-yard spray cannons around the perimeter of the stockyard and along the central S/R berms, and four new Spray Towers. Two of the spray towers stand 100 feet tall with a 130-foot-wide boom and two were stand 75 foot tall with a 100-foot-wide boom, complete with misting sprays. An existing spray tower, installed as a test pole in 2016, was also integrated into the new system. All the towers were outfitted with a yard spray cannons for consistent pile coverage.
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