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During particle accelerator decommissioning, the waste is classified based on its radioactivity level where the very-low-level activity material is the potential clearance candidate. Complying with the Swiss legislation, the waste must fulfil three criteria in order to be cleared. Before performing the radiological measurements, the waste must be processed (disassembled, cut, … ) due to its size and multi-material composition. To properly evaluate the measurement results, a detailed theoretical study must be performed providing information on e.g. expected radionuclides. As a part of quality assurance, the theoretical models are verified using gamma spectrometry measurements on waste samples. The presented methodology is supported by the summary of past and ongoing CERN projects as well as know-how learned by years of experience. •Developed a methodology for radiological clearance of accelerator radioactive material, compliant with Swiss regulations.•Identified viable material reprocessing techniques according to waste type.•Achieved environmental and financial benefits by saving at least 16000 tons of excavated earth through material recycling.•Reduced unnecessary use of long-term radioactive storage. Svihrova, Lucie; Bauer, Kerstin; Bruno, Luca; Dumont, Gerald; Magistris, Matteo; Menaa, Nabil; Silari, Marco; Ulrici, Luisa" /> <meta name="keywords" content="Radiological clearance methodology, Radioactive waste, Particle accelerator, Gamma spectrometry, Ambient dose equivalent rate and contamination measurements" /> <script type="text/javascript" src="https://cds.cern.ch/js/jquery.min.js"></script>  <link rel="stylesheet" href="https://cds.cern.ch/img/webnews.css" type="text/css" />  <script type="text/javascript" src="https://cds.cern.ch/js/webnews.js?v=20131009"></script> <meta property="fb:app_id" content="137353533001720"/> <script type="text/x-mathjax-config"> MathJax.Hub.Config({ tex2jax: {inlineMath: [['$','$']], processEscapes: true}, showProcessingMessages: false, messageStyle: "none" }); </script> <script src="/MathJax/MathJax.js?config=TeX-AMS_CHTML" type="text/javascript"> </script>  <meta content="Elsevier B.V. : Radiological clearance of historical waste from particle accelerators" name="citation_title" /> <meta content="Svihrova, Lucie" name="citation_author" /> <meta content="Magistris, Matteo" name="citation_author" /> <meta content="Ulrici, Luisa" name="citation_author" /> <meta content="Menaa, Nabil" name="citation_author" /> <meta content="Bauer, Kerstin" name="citation_author" /> <meta content="Silari, Marco" name="citation_author" /> <meta content="Bruno, Luca" name="citation_author" /> <meta content="Dumont, Gerald" name="citation_author" /> <meta content="10.1016/j.nima.2024.169476" name="citation_doi" /> <meta content="Nucl. 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During particle accelerator decommissioning, the waste is classified based on its radioactivity level where the very-low-level activity material is the potential clearance candidate. Complying with the Swiss legislation, the waste must fulfil three criteria in order to be cleared. Before performing the radiological measurements, the waste must be processed (disassembled, cut, … ) due to its size and multi-material composition. To properly evaluate the measurement results, a detailed theoretical study must be performed providing information on e.g. expected radionuclides. As a part of quality assurance, the theoretical models are verified using gamma spectrometry measurements on waste samples. The presented methodology is supported by the summary of past and ongoing CERN projects as well as know-how learned by years of experience. •Developed a methodology for radiological clearance of accelerator radioactive material, compliant with Swiss regulations.•Identified viable material reprocessing techniques according to waste type.•Achieved environmental and financial benefits by saving at least 16000 tons of excavated earth through material recycling.•Reduced unnecessary use of long-term radioactive storage." property="og:description" /> <meta content="Elsevier B.V." property="og:description" />  <meta content="summary" name="twitter:card" /> <style></style> </head> <body class="CERN32Document32Server search" lang="no">  <div id="cern-toolbar"> <h1><a href="http://cern.ch" title="CERN">CERN <span>Accelerating science</span></a></h1> <ul> <li class="cern-accountlinks"><a class="cern-account" href="https://cds.cern.ch/youraccount/login?ln=no&referer=https%3A//cds.cern.ch/record/2900900%3Fln%3Dno" title="Sign in to your CERN account">Sign in</a></li> <li><a class="cern-directory" href="http://cern.ch/directory" title="Search CERN resources and browse the directory">Directory</a></li> </ul> </div>   <div role="banner" class="clearfix" id="header"> <div class="header-inner inner"> <hgroup class="clearfix"> <h2 id="site-name"> <a rel="home" title="Home" href="/"><span>CERN Document Server</span></a> </h2> <h3 id="site-slogan">Access articles, reports and multimedia content in HEP</h3> </hgroup> <div role="navigation" id="main-navigation" class="cdsmenu"> <h2 class="element-invisible">Main menu</h2><ul class="links inline clearfix"> <li class="menu-386 first active-trail"><a class="active-trail" href="https://cds.cern.ch/?ln=no">Søk</a></li> <li class="menu-444 "><a class="" title="" href="https://cds.cern.ch/submit?ln=no">Send inn</a></li> <li class="menu-426 "><a class="" href="https://cds.cern.ch/help/?ln=no">Hjelp</a></li> <li class="leaf hassubcdsmenu"> <a hreflang="en" class="header" href="https://cds.cern.ch/youraccount/display?ln=no">Brukerinnstillinger</a> <ul class="subsubcdsmenu"><li><a href="https://cds.cern.ch/youralerts/list?ln=no">Your alerts</a></li><li><a href="https://cds.cern.ch/yourbaskets/display?ln=no">Your baskets</a></li><li><a href="https://cds.cern.ch/yourcomments?ln=no">Your comments</a></li><li><a href="https://cds.cern.ch/youralerts/display?ln=no">Your searches</a></li></ul></li> </ul> </div> </div> </div>  <table class="navtrailbox"> <tr> <td class="navtrailboxbody"> <a href="/?ln=no" class="navtrail">Hovedsiden</a> > Radiological clearance of historical waste from particle accelerators </td> </tr> </table> </div> <div class="pagebody"><div class="pagebodystripemiddle"> <div class="detailedrecordbox"> <div class="detailedrecordtabs"> <div> <ul class="detailedrecordtabs"><li class="on first"><a href="/record/2900900/?ln=no">Informasjon </a></li><li class=""><a href="/record/2900900/files?ln=no">Files </a></li></ul> <div id="tabsSpacer" style="clear:both;height:0px"> </div></div> </div> <div class="detailedrecordboxcontent"> <div class="top-left-folded"></div> <div class="top-right-folded"></div> <div class="inside">  <abbr class="unapi-id" title="2900900"></abbr> <style type="text/css">  </style> <table class="formatRecordTableFullWidth" > <tr> <td class="formatRecordHeader" style="background-image: url('https://cds.cern.ch/img/journals.jpg');" colspan="2">  Article </td> </tr> <script type="text/javascript"> $( document ).ready(function() { $('.showAuthor').on('click', function() { var author = '<p>' + $(this).data('name') + '</p>'; var affiliation = $(this).data('affiliation') + '</br>'; var contribution = $(this).data('contribution') + '</br>'; $.magnificPopup.open({ items: { src: '<div id="ovelary-mathjax" class="overlay-white oc-content overlay-white-500">' + author + affiliation + contribution + '</div>', type: 'inline' }, callbacks: { open: function() { var div = document.getElementById("overlay-mathjax") MathJax.Hub.Queue(["Typeset", MathJax.Hub, div]); }, } }) }) }); </script> <tr><td class="formatRecordLabel"> Title </td><td style="padding-left:5px;"><b>Radiological clearance of historical waste from particle accelerators</b></td></tr> <tr><td class="formatRecordLabel"><span style="white-space:nowrap;"> Author(s) </span> </td><td style="padding-left:5px;"><a href="https://cds.cern.ch/search?f=author&p=Svihrova%2C%20Lucie&ln=no">Svihrova, Lucie</a> (CERN ; Prague, Tech. U.) ; <a href="https://cds.cern.ch/search?f=author&p=Bauer%2C%20Kerstin&ln=no">Bauer, Kerstin</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Bruno%2C%20Luca&ln=no">Bruno, Luca</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Dumont%2C%20Gerald&ln=no">Dumont, Gerald</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Magistris%2C%20Matteo&ln=no">Magistris, Matteo</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Menaa%2C%20Nabil&ln=no">Menaa, Nabil</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Silari%2C%20Marco&ln=no">Silari, Marco</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Ulrici%2C%20Luisa&ln=no">Ulrici, Luisa</a> (CERN)</td></tr> <tr><td class="formatRecordLabel"> Publication </td><td style="padding-left:5px;">2024</td></tr> <tr><td class="formatRecordLabel"> Number of pages </td><td style="padding-left:5px;">10</td></tr> <tr><td class="formatRecordLabel"> In: </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.1016/j.nima.2024.169476"><i>Nucl. Instrum. Methods Phys. Res., A</i> 1065 (2024) 169476</a> </a></td></tr> <tr><td class="formatRecordLabel"> DOI </td><td style="padding-left:5px;"><a href="http://dx.doi.org/10.1016/j.nima.2024.169476" title="DOI" target="_blank">10.1016/j.nima.2024.169476</a> (publication) <tr><td class="formatRecordLabel"> Subject category </td><td style="padding-left:5px;">Accelerators and Storage Rings</td></tr> <tr><td class="formatRecordLabel"> Abstract </td><td style="padding-left:5px;">This paper presents a detailed methodology for reclassifying radioactive material from particle accelerators as non-radioactive, drawing on experiences at CERN. During particle accelerator decommissioning, the waste is classified based on its radioactivity level where the very-low-level activity material is the potential clearance candidate. Complying with the Swiss legislation, the waste must fulfil three criteria in order to be cleared. Before performing the radiological measurements, the waste must be processed (disassembled, cut, … ) due to its size and multi-material composition. To properly evaluate the measurement results, a detailed theoretical study must be performed providing information on e.g. expected radionuclides. As a part of quality assurance, the theoretical models are verified using gamma spectrometry measurements on waste samples. The presented methodology is supported by the summary of past and ongoing CERN projects as well as know-how learned by years of experience. •Developed a methodology for radiological clearance of accelerator radioactive material, compliant with Swiss regulations.•Identified viable material reprocessing techniques according to waste type.•Achieved environmental and financial benefits by saving at least 16000 tons of excavated earth through material recycling.•Reduced unnecessary use of long-term radioactive storage.</td></tr> <tr><td class="formatRecordLabel"> Copyright/License </td><td style="padding-left:5px;">publication: © 2024-2025 The Author(s) (License: <a href="http://creativecommons.org/licenses/by/4.0/">CC BY 4.0</a>)</td></tr> </table> <br/>Corresponding record in: <a href="http://inspirehep.net/record/2796264">Inspire</a> <small> </small> <br/> <br/><br/><div align="right"><div style="padding-bottom:2px;padding-top:30px;"><span class="moreinfo" style="margin-right:10px;"> <a href="" class="moreinfo">Back to search</a> </span></div></div> <div class="bottom-left-folded"><div class="recordlastmodifiedbox" style="position:relative;margin-left:1px"> Element opprettet 2024-06-15, sist endret 2024-09-09</div></div> <div class="bottom-right-folded" style="text-align:right;padding-bottom:2px;"> <span class="moreinfo" style="margin-right:10px;"><a href="/search?ln=no&p=recid%3A2900900&rm=wrd" class="moreinfo">Lignende elementer</a></span></div> </div> </div> </div> <br/> <br /> <div class="detailedrecordminipanel"> <div class="top-left"></div><div class="top-right"></div> <div class="inside"> <div id="detailedrecordminipanelfile" style="width:33%;float:left;text-align:center;margin-top:0"> <div><small class="detailedRecordActions">Fulltekst:</small> <br /><a href="/record/2900900/files/Publication.pdf"><img style="border:none" src="/img/file-icon-text-34x48.gif" alt="Last ned fulltekst" /><br />PDF</a><br /></div> </div> <div id="detailedrecordminipanelreview" style="width:30%;float:left;text-align:center"> </div> <div id="detailedrecordminipanelactions" style="width:36%;float:right;text-align:right;"> <ul class="detailedrecordactions"> <li><a href="/yourbaskets/add?ln=no&recid=2900900">Legg i egen kurv</a></li> <li>Eksporter som <a style="text-decoration:underline;font-weight:normal" href="/record/2900900/export/hx?ln=no">BibTeX</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2900900/export/hm?ln=no">MARC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2900900/export/xm?ln=no">MARCXML</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2900900/export/xd?ln=no">DC</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2900900/export/xe?ln=no">EndNote</a>,  <a style="text-decoration:underline;font-weight:normal" href="/record/2900900/export/xn?ln=no">NLM</a>, <a style="text-decoration:underline;font-weight:normal" href="/record/2900900/export/xw?ln=no">RefWorks</a> </li> </ul> <div style='padding-left: 13px;'>  <div id="bookmark"></div> <div id="bookmark_sciencewise"></div> <style type="text/css"> #bookmark_sciencewise, #bookmark {float: left;} #bookmark_sciencewise li {padding: 2px; width: 25px;} #bookmark_sciencewise ul, #bookmark ul {list-style-image: none;} </style> <script type="text/javascript" src="/js/jquery.bookmark.min.js"></script> <style type="text/css">@import "/css/jquery.bookmark.css";</style> <script type="text/javascript">// <![CDATA[ $.bookmark.addSite('sciencewise', 'ScienceWise.info', 'https://cds.cern.ch/img/sciencewise.png', 'en', 'bookmark', 'http://sciencewise.info/bookmarks/cds:2900900/add'); $('#bookmark_sciencewise').bookmark({sites: ['sciencewise']}); $('#bookmark').bookmark({ sites: ['facebook', 'twitter', 'linkedin', 'google_plusone'], icons: '/img/bookmarks.png', url: 'https://cds.cern.ch/record/2900900', addEmail: true, title: "Radiological clearance of historical waste from particle accelerators", description: "This paper presents a detailed methodology for reclassifying radioactive material from particle accelerators as non-radioactive, drawing on experiences at CERN. During particle accelerator decommissioning, the waste is classified based on its radioactivity level where the very-low-level activity material is the potential clearance candidate. Complying with the Swiss legislation, the waste must fulfil three criteria in order to be cleared. Before performing the radiological measurements, the waste must be processed (disassembled, cut, \u2026 ) due to its size and multi-material composition. To properly evaluate the measurement results, a detailed theoretical study must be performed providing information on e.g. expected radionuclides. As a part of quality assurance, the theoretical models are verified using gamma spectrometry measurements on waste samples. The presented methodology is supported by the summary of past and ongoing CERN projects as well as know-how learned by years of experience. \u2022Developed a methodology for radiological clearance of accelerator radioactive material, compliant with Swiss regulations.\u2022Identified viable material reprocessing techniques according to waste type.\u2022Achieved environmental and financial benefits by saving at least 16000 tons of excavated earth through material recycling.\u2022Reduced unnecessary use of long-term radioactive storage." }); // ]]> </script>  </div> </div> <div style="clear:both;margin-bottom: 0;"></div> </div> <div class="bottom-left"></div><div class="bottom-right"></div> </div> </div></div> <footer id="footer" class="pagefooter clearfix">  <div class="pagefooterstripeleft"> CERN Document Server :: <a class="footer" href="https://cds.cern.ch/?ln=no">Søk</a> :: <a class="footer" href="https://cds.cern.ch/submit?ln=no">Send inn</a> :: <a class="footer" href="https://cds.cern.ch/youraccount/display?ln=no">Brukerinnstillinger</a> :: <a class="footer" href="https://cds.cern.ch/help/?ln=no">Hjelp</a> :: <a class="footer" href="https://cern.service-now.com/service-portal?id=privacy_policy&se=CDS-Service" target="_blank">Privacy Notice</a> :: <a class="footer" href="https://repository.cern/content-policy" target="_blank">Content Policy</a> :: <a class="footer" href="https://repository.cern/terms" target="_blank">Terms and Conditions</a> <br /> Powered by <a class="footer" href="http://invenio-software.org/">Invenio</a> <br /> Vedlikeholdt av <a class="footer" href="https://cern.service-now.com/service-portal?id=service_element&name=CDS-Service">CDS Service</a> - Need help? 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