ASTM WK57831

    New Specification for Aramid-Fabric-Reinforced Thermoplastic Lining System for Water

    (What is a Work Item?)

    Developed by Subcommittee: F17.67 | Committee F17 | Contact Staff Manager



    WK57831

    1. Scope

    1.1 This specification covers requirements and test methods for materials, dimensions, workmanship, and markings for factory manufactured high-pressure thermoplastic liners containing a reinforcing aramid fabric for the nonstructural trenchless rehabilitation of water lines. This specification includes end connections and installation procedures. It covers design pressures up to 82 bar [1189 psi] in nominal diameters from 150 with an outer diameter 134 mm [5.28 in.] up to 500 with an outer diameter 454 mm [17.87 in.] for installation into host pipe with nominal diameter from 152 to 508 mm [6 to 20 in.]. 1.2 The same thermoplastic liner system may be used as a standalone pipeline provided that the pipeline is not buried. The piping is designed for containment and transport of pressurized liquids. The piping has sufficient flexibility to allow coiling and for use in rehabilitation of existing pipelines. The piping system is not designed to withstand external soil loads. Underground applications are limited to lining of structural host piping. 1.3 The aramid-fabric-reinforced thermoplastic liners covered by this specification are multi-layered liner products in which the inner and outer thermoplastic layers are melt bonded to an aramid fabric reinforcement manufactured in long continuous lengths and reeled for storage, transport, and installation. The multilayer thermoplastic and aramid fabric lining system1 governed by this specification is intended for continuous use up to 50C [122F] for the transport of sewage, non-potable water, or potable water. 1.4 Units--The values stated in SI units are to be regarded as standard. The values given in brackets are mathematical conversions to inch-pound units that are provided for information only and are not considered standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

    The product and applications are valuable and unique in two ways: for long-term rehabilitation of pressurized fluid lines that require a very flexible yet strong liner and shorter-term above-ground fluid pipelines, such as for emergency water delivery, temporary bypass pipelines, and other applications.


    Keywords

    reline pipeline repair

    The title and scope are in draft form and are under development within this ASTM Committee.

    Citing ASTM Standards
    Back to Top
    Work Item Status

    Date Initiated:
    02-13-2017

    Technical Contact:
    David Woods

    Item:
    027

    Ballot:
    F17 (17-03)

    Status:
    Negative Votes Need Resolution