ANS Nuclear Cafe

The Fort St. Vrain Nuclear Generating Station completed and in operational service. Press photo in Will Davis collection.

The initial startup of the Fort St. Vrain station finally happened on January 31, 1974, which was roughly one month after the station had received an operating license from the Atomic Energy Commission (AEC).  As was the habit in those days with plants that were more experimental in nature than the light water plants, Public Service of Colorado had applied for and been granted by the AEC an operating license under Section 104(b) of the Atomic Energy Act.  This provision, ostensibly for medical or for research and developmental reactors, allowed a great deal more operational flexibility to the operators and additionally required far less discussion with and approval by the AEC itself on various matters concerning plant design, operation, administration and developmental testing.

This week's video is a five-minute-plus "tour de force" on the actual steps of fabrication required to manufacture the integral reactors used in the latest Russian nuclear powered icebreakers.  The impressive shop operations required to fabricate such a system are usually not seen widely, but in this case, Atomenergomash shows the entire process in both computer graphics and in actual film shot during fabrication.  Atomenergomash is the design division of Russian nuclear state enterprise Rosatom; one of the subsidiaries of Atomenergomash is the storied "Joint Stock Company Afrikantov," which is the section responsible for design and fabrication of sea-going nuclear power plants.

By Aristidis (Aries) Loumis

According to the Roman historian Quintus Rufus, Midas's Gordian Knot was actually several knots so tightly entangled it was impossible to see how they were fastened.  The Gordian Knot of Grid Resilience is similarly constructed.  There's the Fuel Security Knot (how is "fuel security" defined?)  There are a series of knots related to the definition of and engineering approach to achieving generation system resilience, transmission system resilience, distribution system resilience, and integrated Grid system resilience. There's the Regulatory Knot - a real killer due to electricity market deregulation, entangled federal/state/local regulatory jurisdictions, and the demise of the vertically-integrated electricity provider. There's the Ownership Knot (most Critical Infrastructure in the U.S. is actually owned by the private sector).  There's a Tragedy Of The Commons Knot (when everyone is a stakeholder, but no one takes ownership of a problem).  I could go on.

Offsetting the shock of this week's announcement that FirstEnergy intends to shut down its entire fleet of nuclear plants (Davis-Besse, Perry and Beaver Valley) early - the first whole fleet early shutdown declaration in this increasingly dreary nuclear season - we have some good news of the progress underway at Plant Vogtle in Georgia.

FirstEnergy's recent announcement of its intent to shutter four commercial power reactors at its Perry, Davis-Besse, and Beaver Valley sites is just the latest development in an escalating dialogue about electric Grid resilience and nuclear power's role in enabling and maintaining modern resilient societies and the resilient electricity supply systems upon which they depend. (Within this post, my definition of "Grid" is "the integrated system of U.S. generation, transmission, and distribution assets required to produce and deliver electricity to the end consumer".)

Women's History Month is a time to reflect back on the contributions of women, and to look forward to their potential. In nuclear science, there is a rich history of female physicists and engineers contributing to our field along with their male counterparts. From the radium to radioimmunoassay to reactors, women have defied the odds to become leaders in all areas of nuclear science and engineering.

In the last half of 1968, Public Service of Colorado obtained the necessary approvals from the US Atomic Energy Commission and from the Colorado Public Service Commission to begin the actual construction of its Fort St. Vrain Nuclear Generating Station.

Dr. Ida Noddack (1896-1978) was a German Chemist most well-known for her co-discovery of rhenium and challenging Enrico Fermi's theory on element 93.

Any ANS national member, who is a U.S. citizen, with an M.S. or equivalent experience in nuclear engineering, nuclear science, or a related field, can apply for the Glenn T. Seaborg Congressional Science and Engineering Fellowship. The Seaborg Fellow serves as a staff member in the Congressional office of his or her choice, providing scientific advice to the member of Congress and his or her staff. The 12 months of service starts on January 1 and ends on December 31.

We continue this look at original materials covering America's second commercial High Temperature Gas-cooled Reactor (HTGR) with the examination of components of the NSSS, or Nuclear Steam Supply System.

Dr. Rosalyn Sussman Yalow

Rosalyn Sussman Yalow was a medical physicist and won the 1977 Nobel Prize in Physiology or Medicine along with her partner Solomon Berson for the development of radioimmunoassay (RIA).

For most working in the field of nuclear energy, the American Nuclear Society conferences are frequently attended to learn about the latest innovations, present their newest research, and spark new hypotheses. But the best ideas aren't always found in the lecture halls. In the case of the latest collaboration between Idaho National Laboratory (INL) and Oregon State University, lunchtime was the breeding ground for innovation.

In February of 1950, a devoted follower of Albert Einstein wrote him a letter prompted by the death of his son. He questioned Einstein's belief that physical death cannot be transcended. His grief could only be overcome if Einstein were to endorse a theory wherein his love for his son would render the latter immortal [1]. Einstein wrote back to the grief-stricken father, grimly but pragmatically choosing to focus on nursing his mental health back to a more peaceful state, than on any theories about his son's death.

By Don Eggett and Mimi Holland Limbach - PBNC 2018 meeting co-chairs

By Will Davis

Happy Women's History Month! Each week during the month of March, one woman from the history of nuclear science and technology will be featured on the ANS Nuclear Cafe.

There's been a ton of news since RadioNuclear.org's newest episode! ANS Social Media Team member and program host Doug Hardtmayer picked out three that had a lot to unpack, so  enjoy his extended news segment! The first item he discusses is the new MOU signed between the Ukraine and Holtec to build multiple SMR-160's in the Ukraine by 2026. Doug also discusses Mark Z. Jacobson's decision to drop the lawsuit against PNAS and Christopher Clack, and speculate some of the reasons he may have dropped the case. Lastly, Doug tackles a new Greenpeace study from Fukushima that will surely make its rounds in the anti-nuclear community, and discuss some questionable findings from this study. Doug's is joined this week by two senior-level board members from First Energy, owner of the Davis-Bessie and Perry Nuclear Power Plants, Ohio's nuclear future!

One of the important design goals for the Fort St. Vrain reactor - really, the second-generation high temperature gas cooled reactor - was to create a core design that would be more compact than that actually used at Peach Bottom.  An innovative design was developed using stacked reactor-grade graphite modular blocks which incorporated fuel rods that contained coated fuel particles.

College graduates, as with most industries, are the future of nuclear engineering. How university programs are structured, the professors' involvement in the field, and the opportunities available at the undergraduate and graduate-level are fundamental to the continued growth of nuclear engineering.