Innovative intake screening equipment protects fish at New Hampshire power plant

Feb. 28, 2006
When Con Edison Development began working with its affiliate, Newington Energy LLC, to design a new 525-megawatt gas- and oil-fired combined cycle power plant in Newington, NH, the company wanted to make sure the cooling intake structure for the new plant met Best Available Technology (BAT) requirements. As such, it turned to USFilter's Envirex modified Ristroph fish screen to safely remove fish from the intake structures...

WARRENDALE, PA, Feb. 28, 2006 -- When Con Edison Development began working with its affiliate, Newington Energy LLC, in October 2000 to design a new 525-megawatt gas- and oil-fired combined cycle power plant in Newington, NH, the company wanted to make sure the cooling intake structure for the new plant met Best Available Technology (BAT) requirements. Meeting these requirements would ensure compliance with future U.S. Environmental Protection Agency (EPA) regulations.

Solution
The Envirex® Modified Ristroph fish screen safely removes fish from intake systems. Designed specifically for environmentally sensitive conditions, the screen has been approved as BTA in several states. The Smooth-tex® flat wire screen surfaces minimize fish injury, and slots sized to the nearest 0.04-inch exclude even very small fish.

Results
In May 2001, USFilter's Envirex Products provided the Newington plant with Modified Ristroph fish screens, grab-style trash rakes, stop logs, wash water pumps and bar racks.

Marine Resources Inc. conducted fish impingement studies at the Newington site from October 2002 to January 2004, and reported the findings to the EPA. Thirteen species with an extrapolated annual total of 324 fish were represented in the samples collected. An analysis of the high and low-pressure return system showed that the low-pressure screening system recovered 85% of all fish impinged.

-- Learn about Envirex modified Ristroph fish screens
-- Case Study: "Meeting EPA 'fish friendly' requirements with USFilter circulating water screens"

With headquarters in Warrendale, PA, and offices and installations around the world, USFilter (www.usfilter.com) is a $1.2 billion water company with 5,800 experienced professionals dedicated to delivering cost-effective, reliable water and wastewater treatment systems and services. It is part of Siemens Water Technologies.

Siemens Water Technologies (www.siemens.com/water) delivers cost-effective, reliable water and wastewater treatment systems and services to municipal, industrial, commercial and institutional customers worldwide. The Water Technologies division is part of Siemens' Industrial Solutions and Services Group (I&S), which provides innovative solutions and services designed to improve competitiveness in processing and manufacturing industries and in infrastructure. In fiscal 2005, I&S employed a total of 31,700 people worldwide and achieved total sales of EUR 5.390 billion [US$6.424 billion].

[US$1 = EUR 0.839]

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