Weekly Intake: A Water Intake Systems Blog

4 Things to Consider When Selecting Traveling Water Screens for a Nuclear Power Plant

By Michael Stock

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Water. It's crucial to the operation of nuclear power plants, since water is used to:

  • Move heat from the reactor core to the steam turbines.
  • Remove extra heat from the steam circuit.

Traveling water screens help ensure that the water taken in for these purposes is clean and free of debris. It is important to select a screen that does this as quickly and efficiently as possible. There are a few things to keep in mind when selecting the right traveling water screen for use in a nuclear power plant:


1. Is the Screen Durable & Reliable?

It is important that the screens can stand up to any water intake challenge that is thrown at them. Some features to look for include:
  1. Non-metallic basket frame (non-metallic baskets are lighter and cause less wear and tear)
  2. A steel main frame (it's more durable than other materials)
  3. Non-lube main carrier chain
  4. Roll-around boot tracking


2. Does the screen comply with Section 316(b) of the Clean Water Act?

According to the EPA, facilities that have National Pollutant Discharge Elimination System (NPDES) permits and withdraw at least 2 million gallons per day from nearby water sources (25% of which is used only for cooling purposes) must take some steps to reduce the impact they have on aquatic wildlife. One way of reducing impact is by installing traveling water screens.


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3. How easy is it to obtain replacement parts?

With the all of the strict regulations that are imposed on nuclear power plants, it is important to get a traveling water screen from a company that makes it easy to purchase OEM parts. If you have the ability to always purchase the same parts, it saves the time and hassle of always having to spec and get approval for parts.



4. Can you service the Traveling Water Screen?

Do you have a trained staff at your facility who will be able to maintain your traveling water screens? If not, it is important to contract out to a 3rd party that specializes in making repairs within nuclear power plants and offers regular maintenance contracts. Evoqua's dive team is safety rated for nuclear power plants, and all power plants, and they only work on intake systems. They specialize in intake and are the experts you want on a nuclear site.

 

If you have questions about anything you've read in this post, our product experts would love to answer them.

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