EPA 316(b) Compliance Solutions

Beaudrey's Solutions for EPA 316(b)

Beaudrey traveling band screens as well as our WIP Screen (an alternative to traveling band screens) have been named BTA for 316(b). By installing one of these screens, plants will meet compliance option 5 of the rule.

Beaudrey is dedicated to creating water screening technologies that are environmentally sound. We are committed to creating new solutions that allow our customers to generate energy as efficiently and cleanly as possible with the absolute lowest impact on the sensitive ecosystems involved.

To learn more about these technologies please visit the Products page or the Fish Protection page.

Problem: Fish Mortality by Impingement and Entrainment

When large volumes of water are drawn from rivers, lakes, estuaries, oceans, ponds or reservoirs to be used for cooling purposes, there is the risk of also drawing marine organisms in the intake system. Older systems that have not been designed or outfitted for fish protection will treat this marine life just as any other piece of debris. Although some fish are able to swim away and avoid the intake system, many are drawn into the water intake screen. Some may survive the screening process, but the harsh treatment during the screening process generally leads to a high mortality rate in fish and other aquatic life forms, especially those that are juvenile or are a smaller species.

The EPA estimates that 2.12 billion fish, crabs, and shrimp are killed annually by impingement and entrainment in water intake screen systems. Impingement happens when fish and other organisms are trapped against screens when water is drawn into facility’s cooling system. The injuries from impingement often prove fatal within a few days, because of physical harm that is done to the fish (lacerations, loss of gills, etc). Entrainment happens when organisms are drawn into the facility. Once inside the facility, entrained organisms are exposed to high pressure and temperatures, often times resulting in death.

To combat this ever-increasing environmental concern, the EPA has put in place guidelines for fish protection for power utilities and manufacturing facilities that use circulating water to cool their plants.

Regulation: EPA Clean Water Act, Section 316(b)

On May 19, 2014 the United States Environmental Protection Agency (EPA) released the final rule to their Clean Water Act, Section 316(b). This rule affects existing power plants and manufacturing facilities that withdraw at least 25 percent of their water for cooling purposes from an adjacent water body or that have a design intake flow of 2 million gallons of water or more each day.

The rule will be implemented through NPDES permits. Facilities are required to choose one of seven options to reduce fish impingement. Options include:

  1. Operating a closed-cycle cooling system
  2. Operating a cooling water intake structure that has a miximum through-screen design intake velocity of 0.5 fps
  3. Operating a cooling water intake structure that has a maximum through-screen intake velocity of 0.5 fps
  4. Operati an offshore velocity cap
  5. Operate modified traveling screens that meet the best technology available (BTA) requirements set forth
  6. Operate a combination of technologies that meet BTA requirements for impingement redution
  7. Achieve the specified impingement mortality performace standard

To find out more about the Clean Water Act, Section 316(b) please click here.