Staying cool in the desert: New options for Palo Verde

July 15, 2022, 3:14PMNuclear NewsBy Brad Berles
A view of Palo Verde-3 and a spray pond, as seen from Unit 2. (Photo: APS)

In the western part of Michigan, where I grew up and spent the early part of my career, water availability was rarely a concern or a topic that might appear in the news. Lake Michigan was a plentiful source of water, and Mother Nature always provided plenty of precipitation to keep things green. If anything, sometimes folks wished it would stop raining! So it was quite a big change in environment when in 2008 my career took me to the desert of Arizona and the Palo Verde Generating Station, with annual regional rainfall totals of three inches in a good year.

2021 ANS Virtual Annual Meeting: CEO roundtable

June 18, 2021, 9:37AMNuclear News

The 2021 ANS Annual Meeting brought together three leading chief executive officers from the nuclear industry on June 16 for a discussion centered on the future role of nuclear energy deployment and the challenges of portfolio management during a time of net-zero carbon goals.

Robotics at Palo Verde

October 30, 2020, 2:09PMNuclear NewsRick Michal

The Zephyr system uses probes for steam generator inspections. Photos: APS

The Palo Verde Nuclear Generating Station, a three-unit pressurized water reactor plant operated by Arizona Public Service Company, has started using an inspection technology relatively new to the nuclear industry. The technology, called smart pigs (an acronym for “piping inline gauges”), has previously been employed by oil and gas companies for inspecting and cleaning underground pipes. After testing and analyzing smart pig products from several companies, Palo Verde’s underground piping consultant, Dan Wittas, selected a smart pig suitable for navigating the tight-radius bends in the plant’s spray pond piping. The spray pond system consists of piping, a pump, and a reservoir where hot water (from the Palo Verde plant) is cooled before reuse by pumping it through spray nozzles into the cooler air. Smart pigs work by using the water’s flow through the piping to move an inspection tool within the pipe itself. The technology replaces the previous method of pipe inspection, in which various relatively small sections of piping were unearthed and directly inspected, and were considered to be representative examples of the overall piping condition. In contrast, the smart pigs obtain corrosion levels for the length of piping traveled through and allow a corrosion baseline to be established.

EIA: Nine of top 10 electricity generators in 2019 were nuclear plants

October 6, 2020, 12:01PMNuclear News

Graph: EIA

Of the 10 U.S. power plants that generated the most electricity in 2019, nine were nuclear plants, a recent report from the U.S. Energy Information Administration states.

These 10 facilities produced a combined 230 million megawatt hours of electricity last year, accounting for 5.6 percent of all electricity generation in the United States, according to the report. The report also notes a shift in the makeup of the top plants over the past 10 years, from a mix of nuclear and coal-fired generators in 2010 to nearly all nuclear in 2019.

Coal’s share of U.S. electricity generation dropped from 45 percent in 2010 to 23 percent in 2019, the reports says. Stricter air emission standards and decreased cost competitiveness relative to other generators are given as the key reasons for coal’s decade of decline.

UWC Virtual Summit takes place today - Register now!

August 10, 2020, 3:02PMUpdated August 6, 2020, 12:03PMANS News

The 2020 Utility Working Conference Virtual Summit promises to be a valuable experience for all attendees—and may exceed previous in-person UWC meetings in some ways.

“This program overall is the most aggressive and complex that we have ever put together,” said Vince Gilbert, this year’s technical program chair, who has been actively involved with the UWC since 1998.

The normally three-day event is being shortened to a one-day online meeting—August 11—due to the ongoing coronavirus pandemic. Don't miss out on this unique event. Register now for the virtual summit.

Can't participate live? No problem, you can access all of the sessions afterward on demand at your convenience.