More on Last Week's Florida Power Outage

For those who have not heard what the cause was:

A Florida Power & Light engineer not following proper procedure was the sole cause of Tuesday's massive power outage that left millions without electricity throughout the state for a few hours, FPL officials said Friday.

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FPL President Armando Olivera said a preliminary investigation found that not one customer would have lost power had proper procedure been followed. The engineer, who Olivera refused to name, disabled two levels of relay protection, while diagnosing a piece of malfunctioning equipment. When the equipment short-circuited, there were no protective measures in place.

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The engineer was working on a piece of equipment that controls voltage at the Flagami substation in West Miami. While he was diagnosing the problem, an arc -- originally thought to be a small fire -- occurred and melted some of the equipment. Since the protective relays had been disabled, there was nothing in place to contain the problem.

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Olivera said changes in how protection relays were governed are already in place. He also said that once a full investigation is complete, the North American Electric Reliability Corporation (NERC) would conduct a review of the findings.

According to Annex B of the World Energy Outlook 2006, 25 percent of the world's population had no access to electricity in 2005. While the brief Florida outage was an inconvenience, everyone should recognize that 1.6 billion people live in this world every day without access to the benefits of electricity.

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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