ASTM WK68370

    Revision of C1639 - 19 Standard Specification for Fabrication Of Cellular Glass Pipe And Tubing Insulation

    (What is a Work Item?)

    Active Standard: C1639 - 19

    Developed by Subcommittee: C16.40 | Committee C16 | Contact Staff Manager



    WK68370


    Keywords

    bond joints; cellular glass; fabrication; fabrication joints; pipe insulation; tubing insulation;;

    Rationale

    A comment on the last ballot item for this standard pointed out that Permeance, rather than Permeability would be more appropriate to describe the water vapor transmission properties of the insulation joint adhesive. The task group discussed this and agreed to ballot the change from Permeability to Permeance. An adhesive permeance limit of 0.1 perm (5.7 ng/Pasm2) was agreed upon by the task group.

    Citing ASTM Standards
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    Work Item Status

    Date Initiated:
    05-20-2019

    Technical Contact:
    Allen Dickey

    Status:
    Draft Under Development