Engineering:Beta-M
Black: Framework
Blue: Outer radiation protection
Yellow: Heat isolation
Orange: Inner radiation protection (Tungsten)
Red: Radionuclide heat source (Strontium-90)
Pink: Thermoelectric unit
Mounted above the assembly are fins for cooling, outlined in black.
The Beta-M is a radioisotope thermoelectric generator (RTG) that was used in Soviet-era lighthouses and beacons.
Design
The Beta-M[2] contains a core made up of strontium-90, which has a half-life of 28.79 years. The service life of these generators is initially 10 years, and can be extended for another 5 to 10 years.[1] The core is also known as radioisotope heat source 90 (RHS-90). In its initial state after manufacture, the generator is capable of generating 10 watts of electricity.[3] The generator contains the strontium-90 radioisotope, with a heating power of 250W and 1,480 TBq of radioactivity – equivalent to some 280 grams (9.9 oz) of Sr-90.[4] Mass-scale production of RTGs in the Soviet Union was the responsibility of a plant called Baltiyets, in Narva, Estonia.[5]
Safety incidents
Some Beta-M generators have been subject to incidents of vandalism when scavengers disassembled the units while searching for non-ferrous metals.[2][4][6] In December 2001 a radiological accident occurred when three residents of Lia, Georgia found parts of an abandoned Beta-M in the forest while collecting firewood.[4] The three suffered burns and symptoms of acute radiation syndrome as a result of their exposure to the strontium-90 contained in the Beta-M.[4] The disposal team that removed the radiation sources consisted of 25 men who were restricted to 40 seconds' worth of exposure each while transferring the canisters to lead-lined drums..[7]
References
- ↑ 1.0 1.1 Porter, S. (9 July 2015). "Antarctica Radiological Source Removals - Complex US-Russian Cooperative Effort". https://www.osti.gov/servlets/purl/1241969.
- ↑ 2.0 2.1 Kudrik, Igor (17 November 2003). "Two strontium powered lighthouses vandalised on the Kola Peninsula". http://bellona.org/news/nuclear-issues/radioactive-waste-and-spent-nuclear-fuel/2003-11-two-strontium-powered-lighthouses-vandalised-on-the-kola-peninsula.
- ↑ Mahaffey, James (6 June 2017). Atomic Adventures: Secret Islands, Forgotten N-Rays, and Isotopic Murder: A Journey into the Wild World of Nuclear Science. Simon & Schuster. p. 260. ISBN 978-1-68177-480-0. https://books.google.com/books?id=wxokDwAAQBAJ&pg=PT260.
- ↑ 4.0 4.1 4.2 4.3 https://www-pub.iaea.org/MTCD/Publications/PDF/Pub1660web-81061875.pdf [bare URL PDF]
- ↑ Aturin, M.K.; Yarosh, V.I.; Medvedev, V.I.. "Operation of radioisotope thermoelectric generators (RTG) at sea transport objects of the Russian Federationa and their decommissioning". International Atomic Energy Agency. https://inis.iaea.org/collection/NCLCollectionStore/_Public/51/017/51017877.pdf.
- ↑ Eugene Levner; Igor Linkov; Jean-Marie Proth (6 May 2006). Strategic Management of Marine Ecosystems: Proceedings of the NATO Advanced Study Institute on Strategic Management of Marine Ecosystems, Nice, France, 1-11 October, 2003. Springer Science & Business Media. p. 21. ISBN 978-1-4020-3198-4. https://books.google.com/books?id=ojDLSRNmwdkC&pg=PA21.
- ↑ "NOVA | Transcript | Dirty Bomb". 25 February 2003. https://www.pbs.org/wgbh/nova/transcripts/3007_dirtybom.html.
External links
- Norwegian environmental concerns over Beta-M generators still in use
- RTG Master Plan Development Results and Priority Action Plan Elaboration for its Implementation
 |  |
