ANDRITZ Hydro in the USA, Charlotte
ANDRITZ Hydro in the USA is part of the ANDRITZ group. The company is one of the leading global suppliers of electro-mechanical equipment for hydropower plants.
Since the 1990s ANDRITZ Hydro has an office in Charlotte (North Carolina) in order to successfully address the USA market.
In 2010, ANDRITZ Hydro acquired the majority shares of Precision Machine and Supply Inc. in Spokane (Washington), adding one more manufacturing facility to its portfolio.
ANDRITZ Hydro is one of the globally leading suppliers of electromechanical equipment and services for hydropower plants. With over 175 years of experience and an installed fleet of more than 430 GW output, the business area provides complete solutions for hydropower plants of all sizes as well as services for plant diagnosis, refurbishment, modernization and upgrade of existing hydropower assets. Pumps for irrigation, water supply and flood control as well as turbo generators are also part of this business area’s portfolio.
References on the US market
The reference list of projects includes major rehabilitation projects located on the key waterways of the US such as the Mississippi, Arkansas, Tennessee, Colorado, Susquehanna, and Columbia rivers. ANDRITZ Hydro is the OEM to over 35% of the installed base of hydro units in the US and has refurbished 70 units in the US, with a combined output of more than 43,000 MW, representing about 54% of fleet share of the countries total installed capacity.
ANDRITZ has received a new contract to modernize the first four units, B1–B4, at Rock Island Powerhouse 1.
ANDRITZ's proposed turbine design increases capacity, at lower heads, and boosts unit efficiency, providing incremental value to Chelan PUD. Another benefit of the new runners is the fish-friendly design, reducing the number of blades from six to four and reducing the risk of blade strike by a factor of 33%.
Lower Monumental Dam
At the Lower Monumental Dam hydropower plant turbine unit #1 experienced a runner hub linkage failure. The rehabilitation work replaced internal hub linkage components requiring disassembly of the main unit and turbine runner. For unit#1 were also supplied new stator winding and a stator core.
Repairs also included cavitation repair to unit #1 blades, hub and discharge ring as well as repair of cavitation damage to the unit #2 runner. Following the repair, both runners will work as completely functional double-regulated Kaplan runners.
The project included a new powerhouse, two new Compact units, replacing of the four existing penstocks with a single buried penstock, and construction of a new power transmission line. Operating under a net head of 102 m, the new horizontal Francis turbine units will have a nominal output of 8 MW and 3.2 MW. All works will be executed whilst preserving the existing historic powerhouse.
City of Atlanta
Atlanta has intensified its efforts to provide safe and stable supplies of potable water for its citizens. Bellwood quarry – northwest of Atlanta’s downtown district – is going to become one of the biggest water storage facilities in the country, storing some 2.4 billion US gallons of water (9.1 billion liters) as part of this program.
Converting a 300 ft (91.4 m) deep quarry into a water storage facility and recreation area includes blasting two circular pump station shafts near the quarry, one 35 ft (10.7 m) diameter and 200 ft (61 m) deep and the second with a 20 ft (10.6 m) diameter and 300 ft (91.4 m) deep. Five further 6.3 ft (1.9 m) diameter pump shafts are to be constructed, along with a new power substation and various improvements to existing infrastructure.