Skip to main content

On Nuclear Energy, Cooling and the Steam Cycle

It's June, so it's time to trot out the old charge that Summer heat waves are going to shut down nuclear power plants around the world. This time, the story appeared in the Globe and Mail, so I guess I ought to link to Lisa Stiles-Shell's original rebuttal.

Then again, I wonder why we haven't seen more attention paid to the performance of wind power during California's heat wave last Summer.

Comments

Joffan said…
I assume this article: Will France be caught with its plants down? is the one you're referring to.

I'd think the other thermal plants are affected also but they are hardly in a position to publicize it. Given the rest of their compliance culture, they probably just run their outlet water over the heat limit and pay the fine.
Anonymous said…
In Lisa Stiles rebuttal she includes the option:
"--Invent a thermodynamic cycle better than the ones the world's best minds have come up with in the past two centuries or so"

This:
http://vortexengine.ca/index.shtml
*might* turn out to be just that.
The very short explanation is that it's a way to use the upper atmosphere as the cold end for a bottoming cycle. Ie: it's NOT a perpetual motion machine of either kind, but a way to improve the efficiency of any thermal engine, by lowering the temperature of the cold heat sink.

Popular posts from this blog

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...

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...

Nuclear Utility Moves Up in Credit Ratings, Bank is "Comfortable with Nuclear Strategy"

Some positive signs that nuclear utilities can continue to receive positive ratings even while they finance new nuclear plants for the first time in decades: Wells Fargo upgrades SCANA to Outperform from Market Perform Wells analyst says, "YTD, SCG shares have underperformed the Regulated Electrics (total return +2% vs. +9%). Shares trade at 11.3X our 10E EPS, a modest discount to the peer group median of 11.8X. We view the valuation as attractive given a comparatively constructive regulatory environment and potential for above-average long-term EPS growth prospects ... Comfortable with Nuclear Strategy. SCG plans to participate in the development of two regulated nuclear units at a cost of $6.3B, raising legitimate concerns regarding financing and construction. We have carefully considered the risks and are comfortable with SCG’s strategy based on a highly constructive political & regulatory environment, manageable financing needs stretched out over 10 years, strong partners...