STP1319: Design Strategies for Polymer-Lined Flex-Hose Distance/Volume Pieces

    Santay, AJ
    Safety Technologist, Packaged Gas Services Quality Manager, and Senior Principal Project Specialist, Air Products and Chemicals, Inc., Allentown, PA

    Becker, ID
    Safety Technologist, Packaged Gas Services Quality Manager, and Senior Principal Project Specialist, Air Products and Chemicals, Inc., Allentown, PA

    Werley, BL
    Safety Technologist, Packaged Gas Services Quality Manager, and Senior Principal Project Specialist, Air Products and Chemicals, Inc., Allentown, PA

    Pages: 15    Published: Jan 1997


    Abstract

    Several strategies are presented for the design of “distance/volume pieces (DVPs)” used to cope with adiabatic compression hazards in the use of polymer-lined flexible hoses. A well-designed metal DVP located at the dead-end of a system will contain the hot gases produced during compression of the initial hose contents and spare the more easily ignited polymer from ignition. One design strategy contains the entire hot slug of gas within the DVP, the other contains all of the gas that nominally exceeds a given temperature. System modifications that might enhance the effectiveness of DVPs are also described.

    Keywords:

    adiabatic compression, heat of compression, flex hoses, oxygen, oxygen compatibility, fire, flammability, ignition, propagation, combustion


    Paper ID: STP12047S

    Committee/Subcommittee: G04.02

    DOI: 10.1520/STP12047S


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