CNN Fails to Provide Context on Heat Waves, Droughts and Power Plants

Earlier today, CNN aired a report by reporter Sandra Endo concerning how high temperatures are impacting the operations of American nuclear energy facilities. In initially reporting the story, CNN failed to contact any party that owns or operates any of the nations 104 nuclear reactors.

After we contacted CNN, NEI's Steve Kerekes was interviewed for an updated version of the story, one that we've been led to believe will air sometime between 5:00 p.m. and 6:00 p.m. U.S. EDT today.

The following response to the initial CNN report was written by NEI's Thaddeus Swanek:

CNN has aired a report in which it failed to provide context on the water needs of power plants that draw cooling water from lakes, rivers and the ocean. Though all thermal power plants—coal, natural gas and nuclear—use water for cooling purposes, CNN focused solely on nuclear energy facilities.

It also did not mention the electric sector's positive track record for maintaining power production during severe heat waves. Specially, nuclear power plants in many regions suffering extreme heat safely produce electricity 24/7 to keep consumers cool and businesses operating.

Thermoelectric power generation is among the smallest consumptive uses of freshwater by any economic sector, at 3 percent of total consumption—about one-half of residential consumption. According to the U.S. Geological Survey, thermoelectric power generation accounts for 3.3 percent of freshwater consumption nationwide, about the same percentage as the industrial sector (3.4 percent) and raising livestock (3.2 percent). These power plants withdraw more water than any other economic sector, but they return 98 percent of the water they withdraw back to the natural source. Among electricity sources, certain renewable energy systems exceed thermoelectric power plants in water consumption.

Here is a detailed look at the CNN report.

Myth: Only Nuclear Power Plants Need a 'Significant Supply' of Water

The CNN report left the impression that only "...nuclear power plants depend on a significant supply of reliable water to cool reactors." The report failed to mention that all fossil fuel (coal, oil, natural gas) plants need large amounts of water to operate.

The Facts

Nuclear power plants, like all thermal power plants, require significant amounts of water to generate electricity. Companies that operate nuclear power and fossil fuel plants have temperature limits, set by state environmental regulators, for water they discharge from their facilities back into local water bodies. As these water bodies get warmer during heat waves, these facilities may have to cut back on power production in order to meet those limits.

However, this is very rare for nuclear power plants. In fact, nuclear power plants have a track record of keeping electricity flowing even during record-setting heat waves.

Consider these facts:

The United States experienced 170 high temperature records in June. During that month, America's nuclear power plants—which follow stringent temperature limits on heat discharge—operated at an average of 90 percent capacity factor. Capacity factor is the ratio of the actual energy produced to the maximum possible during a given time period.

Severe, prolonged heat had a negligible effect on power production from nuclear power plants.

Nuclear power plant water use is comparable to coal plants. Natural gas plants use less water. (For water usage rates of different electricity generating sources, see the NEI study on water use below).

Power plants observe the temperature limit of their discharge water as set by the state regulatory authority, which determines the temperature that is safe for fish and plant life. Generally, nuclear energy and fossil-fuel plants return to full power when temperatures conditions in the water bodies allow it.

For more information, see the NEI article "How to Cool a Power Plant" and the NEI study "Water Use, Electric Power, and Nuclear Energy."

Also see NEI's blog for articles on water use during heat waves and droughts here and here.

We'll report back, if warranted, once CNN re-airs the report.

Activists' Claims Distort Facts about Advanced Reactor Design

Below is from our rapid response team . Yesterday, regional anti-nuclear organizations asked federal nuclear energy regulators to launch an investigation into what it claims are “newly identified flaws” in Westinghouse’s advanced reactor design, the AP1000. During a teleconference releasing a report on the subject, participants urged the Nuclear Regulatory Commission to suspend license reviews of proposed AP1000 reactors. In its news release, even the groups making these allegations provide conflicting information on its findings. In one instance, the groups cite “dozens of corrosion holes” at reactor vessels and in another says that eight holes have been documented. In all cases, there is another containment mechanism that would provide a barrier to radiation release. Below, we examine why these claims are unwarranted and why the AP1000 design certification process should continue as designated by the NRC. Myth: In the AP1000 reactor design, the gap between the shield bu...

How many nuclear plants does it take to meet the world's energy needs?

Several weeks ago Joshua Pearce at Clarion University in Pennsylvania released a study titled “ Thermodynamic limitations to nuclear energy deployment as a greenhouse gas mitigation technology .” In the study he stated... nuclear energy production would have to increase by 10.5% per year from 2010 to 2050 to both replace fossil-fuel-energy use and meet the future energy demands. This line, of course, made the headlines and has been picked up by several outlets and blogs . When looking into his calculations for this statement, he made one assumption error that overstated the above sentence by nearly a factor of three. Page 121, Section 4.1 of the study states: Richard Smalley pointed out that in 2004, the global economy consumed the equivalent of 220 million barrels of oil per day, which converted into electricity terms is the equivalent of 14.5 TeraWatts (TW), or 14,500,000 MegaWatts (MW) (2005). … With a nuclear plant having about 1000 MW (1 GW) of capacity, we would need 14,500...

What Happens During a Refueling Outage?

You may have noticed over the past few weeks that a number of nuclear plants are shut down for refueling outages or are resuming operations after just returning from one. This type of routine outage usually occurs in the spring or fall when electricity demand is low so that nuclear reactors can replace about one-third of the spent fuel rods with new fuel and conduct other routine maintenance and repairs at the plant. To get a better sense of how refueling works at a nuclear energy facility, I spoke with Marcus Nichol, NEI’s senior project manager for used fuel storage and transportation, and asked him to explain the basics. Why does a nuclear plant need to replace one-third of its fuel? Nichol: The main purpose of a refueling outage is to replace older fuel that is depleted—meaning it can no longer efficiently produce energy from nuclear fission reactions—with new fuel. This “used fuel” has typically been used in the reactor for four-and-a-half to six years before it is pe...

NEI Nuclear Notes

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