The Toronto Ashbridges Bay Treatment Plant Outfall (ABTPO) project is anticipated to be the largest wastewater treatment plant effluent outfall in Canada. This paper describes the design criteria and design approach for a major component of the ABTPO: the riser pipes and ports. A 10-step construction sequence was established for efficient and safe riser pipe and port installation. Alternative materials were evaluated based on materials strength properties, flow resistance, constructability, and corrosion resistance. Biological fouling mitigation alternatives for the riser pipes and ports were evaluated for both microfouling (biofilm) and macrofouling (zebra mussels) potential. Other important design considerations include field investigations, geotechnical conditions, external and internal design pressure scenarios, pipe wall thickness selection, riser-to-tunnel connection details, and riser pipe and port joint connection methods. Performance requirements for marine construction methods such as marine navigation, drilling operations, surveying, riser pipe annulus grouting methods, and leakage testing were also established.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Riser Pipe and Port Design for the Toronto Ashbridges Bay Treatment Plant Outfall


    Contributors:

    Conference:

    Pipelines 2018 ; 2018 ; Toronto, Ontario, Canada


    Published in:

    Publication date :

    2018-07-12




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Model studies of outfall riser hydraulics

    Wilkinson, D. L. / Nittim, R. | British Library Online Contents | 1992


    Port of Toronto

    Cousins, E.C. | Engineering Index Backfile | 1941


    Port of Toronto

    Engineering Index Backfile | 1942


    Port of Toronto

    Cousins, E.L. | Engineering Index Backfile | 1948


    RISER PIPE CLEAN SYSTEM OF RISER HOLD

    KIM YONG HUN / BAE KYOUNG SOO / JEON YONG TAE et al. | European Patent Office | 2016

    Free access