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    I.S. EN 12308:1999

    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

    INSTALLATIONS AND EQUIPMENT FOR LNG - SUITABILITY TESTING OF GASKETS DESIGNED FOR FLANGED JOINTS USED ON LNG PIPING

    Available format(s):  Hardcopy, PDF

    Withdrawn date:  13-05-2021

    Language(s):  English

    Published date:  01-01-1999

    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
    1 Scope
    2 Normative References
    3 Definitions
       3.1 liquefied natural gas (LNG)
       3.2 DN (nominal diameter)
       3.3 PN (nominal pressure)
       3.4 NPS
       3.5 Class
       3.6 Class of pressure
       3.7 Ps (allowable pressure)
       3.8 Required bolting load Fa
    4 Design specifications of tested gaskets
    5 Technical documentation by the gasket manufacturer
    6 Check of compatibility between bolting load and
       mechanical strength of joint components
       6.1 Compatibility with flanges
       6.2 Compatibility with bolting
    7 Means and equipment required for testing
       7.1 Test rig
       7.2 Measuring equipment
    8 Testing
       8.1 Application of bolting load
       8.2 Leak testing at ambient temperature
       8.3 Leak testing at cold temperature
    9 Acceptance criterion
    10 Test report
    Annex A (informative) Thermo-mechanical behaviour of a
            flanged joint with gasket
    Annex B (informative) Test rig
    Annex C (normative) Method for verifying the bolting load
    Annex D (normative) DN equivalence for tests
    Annex E (normative) PN equivalence for tests

    Abstract - (Show below) - (Hide below)

    Defines tests carried out in order to assess the suitability of gaskets designed for flanged joints used on LNG pipes.

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

    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Withdrawn

    Standards Referencing This Book - (Show below) - (Hide below)

    EN 1514-1:1997 Flanges and their joints - Dimensions of gaskets for PN-designated flanges - Part 1: Non-metallic flat gaskets with or without inserts
    ISO 6708:1995 Pipework components Definition and selection of DN (nominal size)
    EN ISO 6708:1995 Pipework components - Definition and selection of DN (nominal size) (ISO 6708:1995)
    EN 1514-2:2014 Flanges and their joints - Gaskets for PN-designated flanges - Part 2: Spiral wound gaskets for use with steel flanges
    EN 764 : 1994 PRESSURE EQUIPMENT - TERMINOLOGY AND SYMBOLS - PRESSURE, TEMPERATURE, VOLUME
    EN 1514-4:1997 Flanges and their joints - Dimensions of gaskets for PN-designated flanges - Part 4: Corrugated, flat or grooved metallic and filled metallic gaskets for use with steel flanges
    EN 1333:2006 Flanges and their joints - Pipework components - Definition and selection of PN
    EN 1160 : 1996 INSTALLATIONS AND EQUIPMENT FOR LIQUEFIED NATURAL GAS - GENERAL CHARACTERISTICS OF LIQUEFIED NATURAL GAS
    PREN 1515-2 : DRAFT 94 FLANGES AND THEIR JOINTS - BOLTING - PART 2: COMBINATION OF FLANGE AND BOLTING MATERIALS FOR STEEL FLANGES - PN DESIGNATED
    EN 1514-3:1997 Flanges and their joints - Dimensions of gaskets for PN-designated flanges - Part 3: Non-metallic PTFE envelope gaskets
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