Nuclear News Roundup May 25, 2019 Finland’s Olkiluoto 3 nuclear reactor has begun work to repair a previously reported problem that causes vibrations in its cooling unit, and which must be fixed before regulators sign off on its safety, operator TVO said on Thursday. Reuters.com Power sector engineering firm Sargent & Lundy will work with NuScale to build what the companies are calling America’s first small modular nuclear reactor. Power-eng.com A memorandum of understanding (MoU) has been signed between Russian state nuclear corporation Rosatom and Vietnam's Ministry of Science and Technology on the implementation of a centre for nuclear science and technology in Vietnam. World-nuclear-news.org Work has begun to demolish the last two buildings that once supported the gaseous diffusion uranium enrichment process at Oak Ridge in Tennessee. Buildings K-131 and K-631 are the most contaminated structures remaining on the 2,200-acre (890 hectare) site. World-nuclear-news.org