Over 15 miles of piping at former uranium enrichment facility to be monitored by robots

Pipe-crawling robot will help decommission DOE nuclear facility, Radiation-measuring robots go where humans cannot Science Daily

Date:

March 20, 2018

Source:

Carnegie Mellon University

Summary:

A pair of autonomous robots will soon be driving through miles of pipes at the US Department of Energy’s former uranium enrichment plant in Piketon, Ohio, to identify uranium deposits on pipe walls.

A pair of autonomous robots developed by Carnegie Mellon University’s Robotics Institute will soon be driving through miles of pipes at the U.S. Department of Energy’s former uranium enrichment plant in Piketon, Ohio, to identify uranium deposits on pipe walls.

The CMU robot has demonstrated it can measure radiation levels more accurately from inside the pipe than is possible with external techniques. In addition to savings in labor costs, its use significantly reduces hazards to workers who otherwise must perform external measurements by hand, garbed in protective gear and using lifts or scaffolding to reach elevated pipes.

DOE officials estimate the robots could save tens of millions of dollars in completing the characterization of uranium deposits at the Portsmouth Gaseous Diffusion Plant in Piketon, and save perhaps $50 million at a similar uranium enrichment plant in Paducah, Kentucky.

…….. Shuttered since 2000, the plant began operations in 1954 and produced enriched uranium, including weapons-grade uranium. With 10.6 million square feet of floor space, it is DOE’s largest facility under roof, with three large buildings containing enrichment process equipment that span the size of 158 football fields. The process buildings contain more than 75 miles of process pipe.Finding the uranium deposits, necessary before DOE decontaminates, decommissions and demolishes the facility, is a herculean task. In the first process building, human crews over the past three years have performed more than 1.4 million measurements of process piping and components manually and are close to declaring the building “cold and dark.”

“With more than 15 miles of piping to be characterized in the next process building, there is a need to seek a smarter method,” said Rodrigo V. Rimando, Jr., director of technology development for DOE’s Office of Environmental Management……….https://www.sciencedaily.com/releases/2018/03/180320084315.htm

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Paul Beckwith, Climate System Scientist

The climate change threat to nuclear power

By Natalie Kopytko “…………The final problem is droughts, which climate models predict will become longer and larger. Legal battles have already been fought in the US over scarce water resources in regions with nuclear power plants, including the Catawba river basin in the Carolinas and the Apalachicola/Chattahoochee/Flint river basin in Georgia, Florida and Alabama. These battles show us that adapting our systems – including nuclear power – to a reduced supply of water will not be easy.

The International Atomic Energy Agency advises the nuclear industry to build power plants to last for 100 years. Given that climate models don’t agree on what to expect within this time period, it is not at all clear how this can be achieved.

New reactors could use dry or hybrid systems with lower water requirements, but the costs of running these systems are likely to be prohibitive. Considering nuclear power plants already have problems with construction cost overruns, any additional costs are likely to meet resistance.

What is to be done? Most forms of energy generation are vulnerable in some way to the effects of climate change, and the fact that nuclear power is among them is yet another argument against a wholesale shift towards this source of energy.

The bottom line is that if nuclear power is to be used to mitigate the effects of climate change, it must also be capable of adapting to them. There are serious doubts that it can. more https://www.newscientist.com/article/mg21028138-200-the-climate-change-threat-to-nuclear-power/

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