The Petrobras Research Centre - CENPES - and the Rio de Janeiro Federal University - UFRJ - have developed a completely automized gammagraphy system in order to inspect underwater pipelines in the oil industry. This project aims at achieving the state of the art in detection and measurement of alveoli corrosion and fatigue cracks in underwater pipelines and steel catenary risers (SCRs). This paper presents the development of the gammagraphy system that will be used, which uses Iridium-192 as radiation source, and will be available with phosphor image plates. Underwater conditions require fixed source-film geometry considering the additional thickness of the pipeline coating and conducted fluid. The available parameters are minimum source activity and contrast sensitivity of the computed radiography systems. Contrast sensitivity evaluation is performed by a computeraided procedure with the line profile of the radiographic image.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Gamma ray system operated by robots for underwater pipeline inspection


    Weitere Titelangaben:

    Gamma-Strahlensystem zum Einsatz für Unterwasser-Pipelineprüfung mit Robotern


    Beteiligte:
    Marinho, C. (Autor:in) / Camerini, C. (Autor:in) / Maia, C. (Autor:in) / Tadeu, R. (Autor:in) / Rocha, H. (Autor:in)


    Erscheinungsdatum :

    2006


    Format / Umfang :

    12 Seiten, 23 Bilder



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Datenträger


    Sprache :

    Englisch




    Gamma ray system operated by divers for underwater inspection

    Alves Marinho, Carla / Camerini, claudio / Lopes, Ricardo et al. | Tema Archiv | 2008


    UNDERWATER PIPELINE INSPECTION CRAWLER

    AL NAHWI AMMAR / ABDELLATIF FADL / OUTA ALI et al. | Europäisches Patentamt | 2020

    Freier Zugriff

    Underwater pipeline inspection crawler

    AL NAHWI AMMAR / ABDELLATIF FADL / OUTA ALI et al. | Europäisches Patentamt | 2020

    Freier Zugriff

    UNDERWATER PIPELINE INSPECTION CRAWLER

    AL NAHWI AMMAR / ABDELLATIF FADL / OUTA ALI et al. | Europäisches Patentamt | 2019

    Freier Zugriff

    Underwater pipeline inspection crawler

    AL NAHWI AMMAR / ABDELLATIF FADL / OUTA ALI et al. | Europäisches Patentamt | 2021

    Freier Zugriff