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.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Gamma ray system operated by robots for underwater pipeline inspection


    Additional title:

    Gamma-Strahlensystem zum Einsatz für Unterwasser-Pipelineprüfung mit Robotern


    Contributors:
    Marinho, C. (author) / Camerini, C. (author) / Maia, C. (author) / Tadeu, R. (author) / Rocha, H. (author)


    Publication date :

    2006


    Size :

    12 Seiten, 23 Bilder



    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English




    Gamma ray system operated by divers for underwater inspection

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


    UNDERWATER PIPELINE INSPECTION CRAWLER

    AL NAHWI AMMAR / ABDELLATIF FADL / OUTA ALI et al. | European Patent Office | 2020

    Free access

    Underwater pipeline inspection crawler

    AL NAHWI AMMAR / ABDELLATIF FADL / OUTA ALI et al. | European Patent Office | 2020

    Free access

    UNDERWATER PIPELINE INSPECTION CRAWLER

    AL NAHWI AMMAR / ABDELLATIF FADL / OUTA ALI et al. | European Patent Office | 2019

    Free access

    Underwater pipeline inspection crawler

    AL NAHWI AMMAR / ABDELLATIF FADL / OUTA ALI et al. | European Patent Office | 2021

    Free access