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    UNI 9571 : 1990

    INITIAL PRESSURE REDUCTION PLANTS FOR NATURAL GAS - OPERATION AND MAINTENANCE

    Ente Nazionale Italiano di Unificazione (UNI)

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    UNI 10390 : 1994

    FINAL NATURAL GAS PRESSURE-REGULATING INSTALLATIONS FOR INLET PRESSURE BETWEEN 5 AND 12 BAR - DESIGN, CONSTRUCTION AND TESTING

    Ente Nazionale Italiano di Unificazione (UNI)

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    UNI 10619 : 1997

    NATURAL GAS PRESSURE REDUCTION AND METERING PLANT WITH UPSTREAM MAXIMUM OPERATING PRESSURE OF 12 BAR FOR INDUSTRIAL USES AND SIMILAR AND FOR SERVICE LINES WITH DOWNSTREAM PRESSURE BETWEEN 0,04 AND 0,5 BAR - DESIGN, CONSTRUCTION, INSTALLATION AND TESTING

    Ente Nazionale Italiano di Unificazione (UNI)

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    UNI EN 1160 : 1998

    INSTALLATIONS AND EQUIPMENT FOR LIQUEFIED NATURAL GAS - GENERAL CHARACTERISTICS OF LIQUEFIED NATURAL GAS

    Ente Nazionale Italiano di Unificazione (UNI)

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    UNI 9245 : 1988

    CUT-OFF DEVICES FOR GAS DISTRIBUTION AND/OR TRANSPORT NETWORKS - BUTTERFLY VALVES

    Ente Nazionale Italiano di Unificazione (UNI)

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    UNI EN ISO 6326-5 : 1999

    NATURAL GAS - DETERMINATION OF SULFUR COMPOUNDS - LINGENER COMBUSTION METHOD

    Ente Nazionale Italiano di Unificazione (UNI)

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    UNI EN ISO 10101-2 : 1999

    NATURAL GAS - DETERMINATION OF WATER BY THE KARL FISCHER METHOD - TITRATION PROCEDURE

    Ente Nazionale Italiano di Unificazione (UNI)

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    UNI EN ISO 10101-3 : 1999

    NATURAL GAS - DETERMINATION OF WATER BY THE KARL FISCHER METHOD - COULOMETRIC PROCEDURE

    Ente Nazionale Italiano di Unificazione (UNI)

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    UNI EN ISO 6326-3 : 1999

    NATURAL GAS - DETERMINATION OF SULFUR COMPOUNDS - DETERMINATION OF HYDROGEN SULFIDE, MERCAPTAN SULFER AND CARBONYL SULFIDE SULFUR BY POTENTIOMETRY

    Ente Nazionale Italiano di Unificazione (UNI)

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    UNI EN ISO 14111 : 1999

    NATURAL GAS - GUIDELINES TO TRACEABILITY IN ANALYSIS

    Ente Nazionale Italiano di Unificazione (UNI)

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