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.ambox-protection{border-left:10px solid #a2a9b1}.mw-parser-output .ambox .mbox-text{border:none;padding:0.25em 0.5em;width:100%}.mw-parser-output .ambox .mbox-image{border:none;padding:2px 0 2px 0.5em;text-align:center}.mw-parser-output .ambox .mbox-imageright{border:none;padding:2px 0.5em 2px 0;text-align:center}.mw-parser-output .ambox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ambox .mbox-image-div{width:52px}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}@media print{body.ns-0 .mw-parser-output .ambox{display:none!important}}</style><table class="box-More_citations_needed plainlinks metadata ambox ambox-content ambox-Refimprove" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><a href="/wiki/File:Question_book-new.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png" decoding="async" width="50" height="39" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/75px-Question_book-new.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x" data-file-width="512" data-file-height="399" /></a></span></div></td><td class="mbox-text"><div class="mbox-text-span">This article <b>needs additional citations for <a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability">verification</a></b>.<span class="hide-when-compact"> Please help <a href="/wiki/Special:EditPage/KS_150" title="Special:EditPage/KS 150">improve this article</a> by <a href="/wiki/Help:Referencing_for_beginners" title="Help:Referencing for beginners">adding citations to reliable sources</a>. Unsourced material may be challenged and removed.<br /><small><span class="plainlinks"><i>Find sources:</i> <a rel="nofollow" class="external text" href="https://www.google.com/search?as_eq=wikipedia&q=%22KS+150%22">"KS 150"</a> – <a rel="nofollow" class="external text" href="https://www.google.com/search?tbm=nws&q=%22KS+150%22+-wikipedia&tbs=ar:1">news</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?&q=%22KS+150%22&tbs=bkt:s&tbm=bks">newspapers</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.google.com/search?tbs=bks:1&q=%22KS+150%22+-wikipedia">books</a> <b>·</b> <a rel="nofollow" class="external text" href="https://scholar.google.com/scholar?q=%22KS+150%22">scholar</a> <b>·</b> <a rel="nofollow" class="external text" href="https://www.jstor.org/action/doBasicSearch?Query=%22KS+150%22&acc=on&wc=on">JSTOR</a></span></small></span> <span class="date-container"><i>(<span class="date">November 2010</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <p><b>KS 150</b> is a <a href="/wiki/Gas_Cooled_Reactor" class="mw-redirect" title="Gas Cooled Reactor">Gas Cooled Reactor</a> using <a href="/wiki/Heavy_Water" class="mw-redirect" title="Heavy Water">Heavy Water</a> as a moderator (GCHWR) <a href="/wiki/Nuclear_reactor" title="Nuclear reactor">nuclear reactor</a> design. A single example, <b>A-1</b>, was constructed at the <a href="/wiki/Bohunice_Nuclear_Power_Plant" title="Bohunice Nuclear Power Plant">Bohunice Nuclear Power Plant</a> in <a href="/wiki/Jaslovsk%C3%A9_Bohunice" title="Jaslovské Bohunice">Jaslovské Bohunice</a>, <a href="/wiki/Czechoslovakia" title="Czechoslovakia">Czechoslovakia</a>. The power plant suffered a series of accidents, the worst being an accident on February 22, 1977, rated <a href="/wiki/International_Nuclear_Event_Scale" class="mw-redirect" title="International Nuclear Event Scale">INES</a>-4. Since 1979 the plant has been undergoing decommissioning. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=KS_150&action=edit&section=1" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The decision to build a nuclear power plant in Czechoslovakia was made in 1956. Construction of A-1 in <a href="/wiki/Jaslovsk%C3%A9_Bohunice" title="Jaslovské Bohunice">Jaslovské Bohunice</a> (western <a href="/wiki/Slovakia" title="Slovakia">Slovakia</a>) started in 1958 and took an unexpected 16 years. A-1 was commissioned on October 24, 1972.<sup id="cite_ref-VH_1-0" class="reference"><a href="#cite_note-VH-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>The KS 150 reactor was built entirely in Czechoslovakia, designed together with <a href="/wiki/Soviet_Union" title="Soviet Union">USSR</a>, built by <a href="/wiki/%C5%A0koda_Works" title="Škoda Works">Škoda Works</a>.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> One advantage of the design was its ability to use unenriched <a href="/wiki/Uranium" title="Uranium">uranium</a> <a href="/wiki/Uranium_mining" title="Uranium mining">mined</a> in Czechoslovakia, similar to a <a href="/wiki/CANDU_reactor" title="CANDU reactor">CANDU reactor</a>. </p><p>Because of its experimental design the power plant suffered from accidents resulting in over 30 unplanned shutdowns. On January 5, 1976, two workers were killed due to a leak of <a href="/wiki/Carbon_dioxide" title="Carbon dioxide">carbon dioxide</a>, which was used as a coolant. A 'technical' (mechanical?) failure occurred during refuelling and a fresh fuel assembly was shot off the reactor into the reactor's hall.<sup id="cite_ref-VH_1-1" class="reference"><a href="#cite_note-VH-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> The most serious accident from 1977 (see below) was rated <a href="/wiki/International_Nuclear_Event_Scale" class="mw-redirect" title="International Nuclear Event Scale">INES</a>-4. The damage could have been repaired with a large investment but on May 17, 1979, the government, dissatisfied with high costs, low performance and accidents, decided to decommission the plant. Plans to build the second reactor block A-2 were canceled. </p><p>The accidents were kept secret, although wild stories circulated among the public. </p><p>A1 Nuclear Power Plant was in operation for 19,261 hours altogether, it generated 1,464 GWh and supplied 916 GWh to the network. Maximum output achieved was 127 MW.<sup id="cite_ref-VH_1-2" class="reference"><a href="#cite_note-VH-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>Decommissioning, decontamination and dismantling of the plant still continues and is expected to be completed in 2033.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Technical_details">Technical details</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=KS_150&action=edit&section=2" title="Edit section: Technical details"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>KS 150 is a heavy water moderated, gas cooled reactor (HWGCR) able to refuel during operation. </p><p>Seventy metal <a href="/wiki/Uranium" title="Uranium">uranium</a> wires, each clad in a compound of <a href="/wiki/Magnesium" title="Magnesium">magnesium</a> and <a href="/wiki/Beryllium" title="Beryllium">beryllium</a>, are bundled together to form a <a href="/wiki/Fuel_rod" class="mw-redirect" title="Fuel rod">fuel rod</a>. </p><p>The reactor's pressure vessel is of 15 cm carbon steel in a cylindrical shape with diameter 5.1 m and height 20 m. Within the pressure vessel (in the active zone) is a cylindrical vessel of aluminium- magnesium-silicon alloy for the heavy water moderator.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p><p>Fuel channels are vertical, each containing a single fuel rod cooled with circulating <a href="/wiki/Carbon_dioxide" title="Carbon dioxide">carbon dioxide</a>. The core is in a pressurized vessel to allow refuelling during operation. The heavy water moderator is cooled in a separate circuit. </p><p>Carbon Dioxide gas used as a primary coolant is streamed around the fuel rods. After being heated by the rods it is piped to six <a href="/wiki/Steam_generator_(nuclear_power)" title="Steam generator (nuclear power)">steam generators</a>. The resulting steam powers three <a href="/wiki/Turbogenerator" class="mw-redirect" title="Turbogenerator">turbogenerators</a>. </p> <ul><li>Fuel: unenriched metal uranium, 23.1 tonnes in the reactor.</li> <li>Core: diameter 3.56 m, height 4 m.</li> <li>Coolant gas on exit from reactor: pressure 5.4 <a href="/wiki/MPa" class="mw-redirect" title="MPa">MPa</a> (~54 atm), temperature 426 °C.</li> <li>Conversion efficiency: 18.5%.</li> <li>Moderating heavy water: temperature 65 °C (Max/exit 90 °C)</li> <li>Capacity: 143 MWe.</li></ul> <div class="mw-heading mw-heading2"><h2 id="1977_accident">1977 accident</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=KS_150&action=edit&section=3" title="Edit section: 1977 accident"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>On February 22, 1977, during a fuel change, a combination of human mistakes and design problems caused the worst nuclear accident in Czechoslovak history. Some fuel rods were being replaced while the reactor was active in a standard procedure. In this instance however humidity absorbers covering the rods were not removed, causing local overheating of the fuel (since transmission of heat to the coolant gas was reduced). The active zone was damaged, heavy water came into contact with the coolant and both primary and secondary circuits were contaminated. </p><p>The accident was rated as level 4 on <a href="/wiki/International_Nuclear_Event_Scale" class="mw-redirect" title="International Nuclear Event Scale">International Nuclear Event Scale</a> (in comparison, the <a href="/wiki/Three_Mile_Island_accident" title="Three Mile Island accident">Three Mile Island accident</a> was rated level 5). </p><p>25% of the fuel elements in a <a href="/wiki/Heavy_water" title="Heavy water">heavy water</a> moderated <a href="/wiki/Carbon_dioxide" title="Carbon dioxide">carbon dioxide</a> cooled 100 MW(e) power reactor were damaged due to operator error. The operators failed to remove <a href="/wiki/Silica_gel" title="Silica gel">silica gel</a> pellets that had fallen into a new fuel element from a damaged pack (there was no procedure available to check the interior of fuel element, therefore only pellets from the top were removed). The silica gel packs were used to keep the unused fuel dry during storage and transport. The silica gel pellets blocked the flow of the coolant resulting in overheating of the fuel and the pressure channel holding it. As a result of overheating the heavy water leaked into the part of the reactor (the gas circuit) where the fuel elements are accommodated, the fuel cladding was subject to corrosion and a considerable amount of radioactivity leaked into the primary cooling circuit (CO<sub>2</sub> gas). Through leaks in the steam boilers (similar basic design to a <a href="/wiki/MAGNOX" class="mw-redirect" title="MAGNOX">MAGNOX</a> or <a href="/wiki/Advanced_gas-cooled_reactor" title="Advanced gas-cooled reactor">AGR</a> plant) some parts of the secondary circuit became contaminated.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=KS_150&action=edit&section=4" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-VH-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-VH_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-VH_1-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-VH_1-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20111003002052/http://www.javys.sk/en/index.php?page=vyradovanie-jadrovoenergetickych-zariadeni%2Fvyradovanie-jadrovej-elektrarne-a1%2Fhistoria">"History"</a>. Archived from <a rel="nofollow" class="external text" href="http://www.javys.sk/en/index.php?page=vyradovanie-jadrovoenergetickych-zariadeni/vyradovanie-jadrovej-elektrarne-a1/historia">the original</a> on 2011-10-03.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=History&rft_id=http%3A%2F%2Fwww.javys.sk%2Fen%2Findex.php%3Fpage%3Dvyradovanie-jadrovoenergetickych-zariadeni%2Fvyradovanie-jadrovej-elektrarne-a1%2Fhistoria&rfr_id=info%3Asid%2Fen.wikipedia.org%3AKS+150" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://elib.biblioatom.ru/text/atomnaya-energiya_t36-2_1974/go,24/">"Атомная энергия. Том 36, вып. 2. – 1974 – Электронная библиотека «История Росатома»"</a>. <i>elib.biblioatom.ru</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=elib.biblioatom.ru&rft.atitle=%D0%90%D1%82%D0%BE%D0%BC%D0%BD%D0%B0%D1%8F+%D1%8D%D0%BD%D0%B5%D1%80%D0%B3%D0%B8%D1%8F.+%D0%A2%D0%BE%D0%BC+36%2C+%D0%B2%D1%8B%D0%BF.+2.+%E2%80%93+1974+%E2%80%93+%D0%AD%D0%BB%D0%B5%D0%BA%D1%82%D1%80%D0%BE%D0%BD%D0%BD%D0%B0%D1%8F+%D0%B1%D0%B8%D0%B1%D0%BB%D0%B8%D0%BE%D1%82%D0%B5%D0%BA%D0%B0+%C2%AB%D0%98%D1%81%D1%82%D0%BE%D1%80%D0%B8%D1%8F+%D0%A0%D0%BE%D1%81%D0%B0%D1%82%D0%BE%D0%BC%D0%B0%C2%BB&rft_id=http%3A%2F%2Felib.biblioatom.ru%2Ftext%2Fatomnaya-energiya_t36-2_1974%2Fgo%2C24%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AKS+150" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20111003002104/http://www.javys.sk/en/index.php?page=vyradovanie-jadrovoenergetickych-zariadeni%2Fvyradovanie-jadrovej-elektrarne-a1%2Fprojekt-vyradovania">"Decommissioning Project"</a>. Archived from <a rel="nofollow" class="external text" href="http://www.javys.sk/en/index.php?page=vyradovanie-jadrovoenergetickych-zariadeni/vyradovanie-jadrovej-elektrarne-a1/projekt-vyradovania">the original</a> on 2011-10-03<span class="reference-accessdate">. Retrieved <span class="nowrap">2020-02-11</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Decommissioning+Project&rft_id=http%3A%2F%2Fwww.javys.sk%2Fen%2Findex.php%3Fpage%3Dvyradovanie-jadrovoenergetickych-zariadeni%2Fvyradovanie-jadrovej-elektrarne-a1%2Fprojekt-vyradovania&rfr_id=info%3Asid%2Fen.wikipedia.org%3AKS+150" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20111003001843/http://www.javys.sk/en/index.php?page=vyradovanie-jadrovoenergetickych-zariadeni%2Fvyradovanie-jadrovej-elektrarne-a1%2Ftechnologia">"Technology"</a>. Archived from <a rel="nofollow" class="external text" href="http://www.javys.sk/en/index.php?page=vyradovanie-jadrovoenergetickych-zariadeni/vyradovanie-jadrovej-elektrarne-a1/technologia">the original</a> on 2011-10-03<span class="reference-accessdate">. Retrieved <span class="nowrap">2020-02-11</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Technology&rft_id=http%3A%2F%2Fwww.javys.sk%2Fen%2Findex.php%3Fpage%3Dvyradovanie-jadrovoenergetickych-zariadeni%2Fvyradovanie-jadrovej-elektrarne-a1%2Ftechnologia&rfr_id=info%3Asid%2Fen.wikipedia.org%3AKS+150" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><i>Radioactivity, Ionizing Radiation and Nuclear Energy</i>, Jiŕí Hála and James D. Navratil, Published by Konvoj (Brno) 2003, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/807302053X" title="Special:BookSources/807302053X">807302053X</a>, p. 300</span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=KS_150&action=edit&section=5" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://www.javys.sk/sk/jadrove-zariadenia/jadrova-elektraren-a1/historia">History of the A1 nuclear power plant</a> in Slovak</li> <li><a rel="nofollow" class="external text" href="https://www.javys.sk/sk/popup/informacny-servis/multimedia/interaktivne-schemy/jadrova-elektraren-a1">Detailed schematics of the A-1 nuclear power plant</a> (Flash-based; to run, it is necessary to allow unsafe scripts)</li> <li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20111003001735/http://www.javys.sk/en/index.php?page=vyradovanie-jadrovoenergetickych-zariadeni%2Fvyradovanie-jadrovej-elektrarne-a1%2Ftechnologia%2Freaktor-ks-150">Detailed schematics of the KS-150 reactor</a> (Flash-based)</li> <li><a rel="nofollow" class="external text" href="https://www.javys.sk/sk/popup/informacny-servis/multimedia/interaktivne-schemy/reaktor-ks-150">Detailed schematics of the KS-150 reactor</a> in Slovak (Flash-based; to run, it is necessary to allow unsafe scripts)</li> <li><a rel="nofollow" class="external text" href="https://inis.iaea.org/collection/NCLCollectionStore/_Public/29/059/29059905.pdf">Decommissioning of the reactor</a> (detailed report, PDF)</li></ul>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=KS_150&oldid=1273920702">https://en.wikipedia.org/w/index.php?title=KS_150&oldid=1273920702</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:Nuclear_reactors" title="Category:Nuclear reactors">Nuclear reactors</a></li><li><a href="/wiki/Category:Civilian_nuclear_power_accidents" title="Category:Civilian nuclear power accidents">Civilian nuclear power accidents</a></li><li><a href="/wiki/Category:Radioactively_contaminated_areas" title="Category:Radioactively contaminated areas">Radioactively contaminated areas</a></li><li><a href="/wiki/Category:1977_in_Czechoslovakia" title="Category:1977 in Czechoslovakia">1977 in Czechoslovakia</a></li><li><a href="/wiki/Category:Czechoslovakia%E2%80%93Soviet_Union_relations" title="Category:Czechoslovakia–Soviet Union relations">Czechoslovakia–Soviet Union relations</a></li><li><a href="/wiki/Category:Science_and_technology_in_Czechoslovakia" title="Category:Science and technology in Czechoslovakia">Science and technology in Czechoslovakia</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Hidden categories: <ul><li><a href="/wiki/Category:Articles_with_short_description" title="Category:Articles with short description">Articles with short description</a></li><li><a href="/wiki/Category:Short_description_matches_Wikidata" title="Category:Short description matches Wikidata">Short description matches Wikidata</a></li><li><a href="/wiki/Category:Articles_needing_additional_references_from_November_2010" title="Category:Articles needing additional references from November 2010">Articles needing additional references from November 2010</a></li><li><a href="/wiki/Category:All_articles_needing_additional_references" title="Category:All articles needing additional references">All articles needing additional references</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> This page was last edited on 4 February 2025, at 15:45<span class="anonymous-show"> (UTC)</span>.</li> <li id="footer-info-copyright">Text is available under the <a href="/wiki/Wikipedia:Text_of_the_Creative_Commons_Attribution-ShareAlike_4.0_International_License" title="Wikipedia:Text of the Creative Commons Attribution-ShareAlike 4.0 International License">Creative Commons Attribution-ShareAlike 4.0 License</a>; additional terms may apply. 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