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Ultrasonic testing of a sealing construction made of salt concrete in an underground disposal facility for radioactive waste

  • For the closure of radioactive waste disposal facilities engineered barriers- so called “drift seals” are used. The purpose of these barriers is to constrain the possible infiltration of brine and to prevent the migration of radionuclides into the biosphere. In a rock salt mine a large scale in-situ experiment of a sealing construction made of salt concrete was set up to prove the technical feasibility and operability of such barriers. In order to investigate the integrity of this structure, non-destructive ultrasonic measurements were carried out. Therefore two different methods were applied at the front side of the test-barrier: 1 Reflection measurements from boreholes 2 Ultrasonic imaging by means of scanning ultrasonic echo methods This extended abstract is a short version of an article to be published in a special edition of ASCE Journal that will briefly describe the sealing construction, the application of the non-destructive ultrasonic measurement methods and theirFor the closure of radioactive waste disposal facilities engineered barriers- so called “drift seals” are used. The purpose of these barriers is to constrain the possible infiltration of brine and to prevent the migration of radionuclides into the biosphere. In a rock salt mine a large scale in-situ experiment of a sealing construction made of salt concrete was set up to prove the technical feasibility and operability of such barriers. In order to investigate the integrity of this structure, non-destructive ultrasonic measurements were carried out. Therefore two different methods were applied at the front side of the test-barrier: 1 Reflection measurements from boreholes 2 Ultrasonic imaging by means of scanning ultrasonic echo methods This extended abstract is a short version of an article to be published in a special edition of ASCE Journal that will briefly describe the sealing construction, the application of the non-destructive ultrasonic measurement methods and their adaptation to the onsite conditions -as well as parts of the obtained results. From this a concept for the systematic investigation of possible contribution of ultrasonic methods for quality assurance of sealing structures may be deduced.zeige mehrzeige weniger

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Metadaten
Autor*innen:Martin KrauseORCiD, R. Mauke, Ute EffnerORCiD, Boris Milmann, Christoph VölkerORCiD, Herbert WiggenhauserORCiD
Dokumenttyp:Zeitschriftenartikel
Veröffentlichungsform:Graue Literatur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):The e-journal of nondestructive testing & ultrasonics
Jahr der Erstveröffentlichung:2015
Verlag:NDT.net
Verlagsort:Kirchwald
Jahrgang/Band:20
Ausgabe/Heft:11
Aufsatznummer:18304
Erste Seite:1
Letzte Seite:4
Freie Schlagwörter:Dry contact transducers in boreholes; Interface salt-concrete / rock salt; Ultrasonic imaging of internal reflectors; Ultrasonic reflection measurement
Veranstaltung:NDT-CE 2015 - International symposium non-destructive testing in civil engineering
Veranstaltungsort:Berlin, Germany
Beginndatum der Veranstaltung:2015-09-15
Enddatum der Veranstaltung:2015-09-17
URN:urn:nbn:de:kobv:b43-346203
URL:http://www.ndt.net/?id=18304
ISSN:1435-4934
Verfügbarkeit des Dokuments:Datei für die Öffentlichkeit verfügbar ("Open Access")
Lizenz (Deutsch):License LogoCreative Commons - Namensnennung-Keine Bearbeitung
Datum der Freischaltung:20.02.2016
Referierte Publikation:Nein
Schriftenreihen ohne Nummerierung:Wissenschaftliche Artikel der BAM
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