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Rapp, Thomas

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  • Veröffentlichung
    Implementation and evaluation of the water safety plan approach for buildings
    (2019) Rapp, Thomas; Rickert, Bettina; Schmidt, Isabelle; Schmoll, Oliver
    The World Health Organization promotes water safety plans (WSPs) - a risk-based management approach - for premise plumbing systems in buildings to prevent deterioration of drinking-water quality. Experience with the implementation of WSPs in buildings were gathered within a pilot project in Germany. The project included an evaluation of the feasibility and advantages of WSPs by all stakeholders who share responsibility in drinking-water safety. While the feasibility of the concept was demonstrated for all buildings, benefits reported by building operators varied. The more technical standards were complied with before implementing WSP, the less pronounced were the resulting improvements. In most cases, WSPs yielded an increased system knowledge and awareness for drinking-water quality issues. WSPs also led to improved operation of the premise plumbing system and provided benefits for surveillance authorities. A survey among the European Network of Drinking-Water Regulators on the existing legal framework regarding drinking-water safety in buildings exhibited that countries are aware of the need to manage risks in buildings' installations, but experience with WSP is rare. Based on the successful implementation and the positive effects of WSPs on drinking-water quality, we recommend the establishment of legal frameworks that require WSPs for priority buildings whilst accounting for differing conditions in buildings and countries. Quelle: https://iwaponline.com
  • Veröffentlichung
    Wasserwirtschaft in Deutschland
    (2017) Arle, Jens; Bartel, Hartmut; Baumgarten, Corinna; Bertram, Andreas; Blondzik, Katrin; Brandt, Simone; Brauer, Frank; Claussen, Ulrich; Damian, Hans-Peter; Dieter, Daniela; Ginzky, Harald; Grimm, Sabine; Helmecke, Manuela; Hofmeier, Katja; Hofmeier, Maximilian; Hülsmann, Wulff; Kirschbaum, Bernd; Knobloch, Tobias; Koppe, Katharina; Koschorreck, Jan; Krakau, Manuela; Leujak, Wera; Mathan, Cindy; Mohaupt, Volker; Naumann, Stephan; Pickl, Christina; Rapp, Thomas; Rechenberg, Jörg; Deutschland. Umweltbundesamt. Abteilung II.2-Wasser und Boden
    Die Broschüre Wasserwirtschaft in Deutschland bietet einen umfassenden Überblick über die Grundlagen, Belastungen und Maßnahmen der deutschen Wasserwirtschaft und präsentiert wesentliche Fakten und aktuelle Daten rund um den Zustand unserer Gewässer, Gewässerschutz sowie Wasserversorgung und Ń entsorgung. Mit dieser Broschüre bieten wir interessierten Leserinnen und Lesern sowie der Fachöffentlichkeit ein Kompendium an Informationen und stellen Studierenden sowie Medienschaffenden eine zuverlässige Grundlage für wissenschaftliche Arbeiten und die Berichterstattung in diesem Themenbereich bereit. Quelle: https://www.umweltbundesamt.de/
  • Veröffentlichung
    Round robin test for odour testing of migration waters
    (2015) Günther, Herbert; Rapp, Thomas
    For a round robin test for EN 1420-1 (Odour assessment for organic materials in contact with drinking water) with 14 contributing laboratories from 10 European countries segments of a plastic pipe were sent to the laboratories which performed a migration test and an odour analysis of the migration waters (water that had contact with the organic material) according to the procedure described in the standard from 1999. In addition reference substances (Methyl tert-butyl ether, 1-butanol and hexanal) were investigated for their suitability to qualify the panels and the individual panellists. Methyl tert-butyl ether (MtBE) and 1-butanol proved to be suitable for this purpose, whereas hexanal showed a wide distribution of the individual odour threshold concentrations. Both possible testing options (unforced and forced choice) were performed and gave similar results. However, with respect to the qualification of the panellists and the data analysis the unforced choice procedure showed advantages. As human olfactory perception is used for the analysis, the reproducibility and the comparability between laboratories is of particular concern. For the pipe material the TON results of the different laboratories were in a range of ÅŸ1.5 dilutions based on a dilution factor of 2. This might be improved by taking the individual sensitivities of the panellists into account more strongly. Appropriate measures for the improvement of the test method appear to be the use of the proposed reference substances for the training of the panellists as well as the auditing and the selection of the panellists. The results of this round robin test are used in the revision process of the standard.Quelle: http://www.sciencedirect.com
  • Veröffentlichung
    Umwelt- und gesundheitsverträgliche Bauprodukte
    (2015) Bolland, Til; Dürkop, Jutta; Däumling, Christine; Horn, Wolfgang; Dorer, Conrad; Englert, Norbert; Fischer, Jürgen; Ilvonen, Outi; Kirschbaum, Bernd; Noack, Constance; Oehm, Anke; Plehn, Wolfgang; Rapp, Thomas; Scutaru, Ana-Maria; Utermann, Jens; Wolter, Rüdiger; Wurbs, Johanna; Deutschland. Umweltbundesamt
    Im Mittelpunkt dieser überarbeiten Fachbroschüre steht der aktuelle Stand des Wissens zu Emissionen und Schadstoffausträgen aus Bauprodukten. Die Broschüre geht den Fragen nach, wie charakteristische Emissionen aus Bauprodukten aussehen, welche Prüfmethoden zur Verfügung stehen und welche Bewertungsmaßstäbe es gibt. Sie enthält Informationen über Möglichkeiten zur Minderung von schädlichen Emissionen und Gerüchen aus Bauprodukten für beabsichtigte Bau- oder Renovierungsmaßnahmen. Die geltenden gesetzlichen Regelungen sowie weitere Kriterien und Kennzeichnungen, die bei der Produktauswahl behilflich sind, werden vorgestellt. Wir freuen uns, wenn wir damit dem Informationsbedarf bei Beschäftigten in Gesundheits-, Bauaufsichts-, Beschaffungs- und Umweltbehörden, bei Fachleuten in der Bauplanung und -ausführung, bei kleinen und mittelständischen Unternehmen und auch bei allen Interessierten entgegen kommen.
    Quelle: Umweltbundesamt
  • Veröffentlichung
    Rund um das Trinkwasser
    (2016) Bartel, Hartmut; Dieter, Hermann H.; Feuerpfeil, Irmgard; Grummt, Hans-Jürgen; Grummt, Tamara; Hummel, Annette; Konietzka, Rainer; Rapp, Thomas; Rechenberg, Jörg; Schaefer, Benedikt; Vigelahn, Lothar; Deutschland. Umweltbundesamt
  • Veröffentlichung
    Blei im Trinkwasser
    (2013) Meyer, Volker; Rapp, Thomas
  • Veröffentlichung
    Contaminants migrating from crossed-linked polyethylene pipes and their effect on drinking water odour
    (2019) Kalweit, Cynthia; Stottmeister, Ernst; Rapp, Thomas
    The formation potential of contaminants diffusing from cross-linked polyethylene (PE-X) pipes and their impact on the odour of drinking water was determined. Three types of PE-X material, Pe-Xa, PE-Xb and PE-Xc, were extensively assessed by performing migration tests following EN 1420 and EN 12873-1. Migration waters were analysed for their threshold odour number (TON). The same samples were investigated by two gas chromatography-mass spectrometry methods: screening and olfactometry. Most of the PE-X materials failed the German regulation of TON <2 for cold water and TON <4 for warm water. PE-Xb material caused the strongest odour and also released the highest amount of contaminants. Metilox, 7,9-di-tert-butyl-1-oxaspiro(4,5)deca-6,9-diene-2,8-dione, 3,5-di-tert-butyl-4-hydroxybenzaldehyde and 2,6-di-tert-butyl-p-benzoquinone (2,6-DtBQ) were the most often detected substances leaching from the tested plastic materials. However, no odour was perceived for most of these substances. Methyl tert-butyl ether (MtBE) and 2-tert-butylphenol are believed to contribute to the sensory problem in the migration water among other substances such as tert-amyl methyl ether, 2,2,2,5-tetramethyltetrahydrofuran, toluene or xylene. In total ten specific descriptions characterized the odour of the individual contaminants: ethereal, fresh, solvent, sweet, fruity, floral, unsavoury, pungent, aromatic and chemical. Quelle: https://www.sciencedirect.com
  • Veröffentlichung
    Water Resource Management in Germany
    (2017) Arle, Jens; Bartel, Hartmut; Baumgarten, Corinna; Bertram, Andreas; Blondzik, Katrin; Brandt, Simone; Brauer, Frank; Claussen, Ulrich; Damian, Hans-Peter; Dieter, Daniela; Ginzky, Harald; Grimm, Sabine; Helmecke, Manuela; Hofmeier, Katja; Hofmeier, Maximilian; Hülsmann, Wulff; Kirschbaum, Bernd; Knobloch, Tobias; Koppe, Katharina; Koschorreck, Jan; Krakau, Manuela; Leujak, Wera; Mathan, Cindy; Mohaupt, Volker; Naumann, Stephan; Pickl, Christina; Rapp, Thomas; Rechenberg, Jörg; Deutschland. Umweltbundesamt. Abteilung II.2-Wasser und Boden; Deutschland. Bundesministerium für Umwelt, Naturschutz und nukleare Sicherheit