The city of Broken Arrow, Okla.’s only existing water treatment plant, erected in 1966, could no longer satisfy the needs of the 35,000 homes and businesses, requiring the city to purchase water from other facilities and nearby Tulsa. In cooperation with the Oklahoma Department of Environmental Quality and the Oklahoma Water Resources Board, a new municipal water treatment plant on the shore of the Verdigris River will provide up to 20 million gal per day (mgd) (plant rating at 20°C) of water daily to Broken Arrow, Okla.
The project began in early 2012 with the bid for the standby power system awarded to Cummins Southern Plains LLC, Tulsa, for the parent company based in Arlington, Texas. The project will utilize three 2 MW generators powered by Tier II emission certified Cummins 16 cylinder QSK 60 series diesel engines.
Due to the environmental and acoustic specifications of the water treatment facility, special enclosures and fuel tanks for the generator sets were required. Cummins Southern Plains LLC sales representative Mike Teague asked Hennig Enclosure Systems (Machesney Park, Ill.) to provide a possible solution. As Teague explained, “Al Grabowski from Hennig had been in contact with Cummins Southern Plains. We gave him the opportunity to quote the project and were quite pleased with the results.”
Cummins Southern Plains LLC provided the performance characteristics of the generator sets to Hennig Enclosures Systems, who then provided submittal drawings of the enclosure packages in Solid Works CAD format for the customer to review. Each enclosure measured 40 ft long by 10 ft wide and nearly 14 ft high to allow ample airflow and provide a 25 dba sound reduction. After the customer and contractor approved the drawings, Hennig Enclosure Systems began cutting and bending steel. “Hennig is a one-stop shop. We manufacture the entire enclosure and fuel tank in addition to mounting the genset and landing all the electrical connections for the customer,” Grabowski added.
The Hennig solution involved a topcoat finish of TGIC polyester powder coat paint for weather resistance and UV protection. Grabowski notes, “Hennig utilizes a durable powder coat finish along with stainless steel hardware on every enclosure we build to meet the broad range of environmental conditions across the United States. We want our enclosures to look as good in 20 years as they do the day they were installed.”
A few weeks after the generator sets arrived at Hennig, the enclosure and fuel tank packages were ready to ship. There were some logistics challenges on this project, as the facility site was in the midst of construction. Delivery was made down a temporary dirt road and the three 2 MW Cummins emergency power generators were set in place without a hitch at the new Broken Arrow Water Treatment facility site.
The Broken Arrow municipal water treatment facility is primarily funded by loans totaling $64.8 million, administered by the Oklahoma Department of Environmental Quality and the Oklahoma Water Resources Board. The facility is being constructed by Crossland Heavy Contractors of Columbus, Kan. The first phase of the project is scheduled to be operational in July 2013.