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    I.S. EN ISO 4126-3:2020

    Current The latest, up-to-date edition.

    Safety devices for protection against excessive pressure - Part 3: Safety valves and bursting disc safety devices in combination (ISO 4126-3:2020)

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  19-10-2020

    Publisher:  National Standards Authority of Ireland

    For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
    Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

    Dates of withdrawal of national standards are available from NSAI.

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    Table of Contents - (Show below) - (Hide below)

    Foreword
    Introduction
    1 Scope
    2 Normative references
    3 Terms and definitions
    4 Symbols
    5 Design of combination
    6 Installation of combination
    7 Combination performance
    8 Determination of combination discharge capacity factor, Fd, by testing
    9 Derivation of combination discharge capacity factor, Fd
    10 Alternative to testing for Fd
    11 Certification of combination discharge capacity factor, Fd
    12 Application and use of the certified combination discharge capacity factor, Fd
    13 Marking and identification of combination devices
    14 Documentation
    15 Preparation for storage and transport

    Abstract - (Show below) - (Hide below)

    This document specifies only the requirements for a product assembled from the in-series combination of safety valves or CSPRS (controlled safety pressure relief systems) according to ISO 4126-1, ISO 4126-4 and ISO 4126-5, and bursting disc safety devices, according to ISO 4126-2, installed upstream of the valve within five pipe diameters of the valve inlet.

    General Product Information - (Show below) - (Hide below)

    Committee TC 185
    Document Type Standard
    Product Note The date of any NSAI previous adoption may not match the date of its original CEN/CENELEC document.
    Publisher National Standards Authority of Ireland
    Status Current
    Supersedes
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