• UNI EN 1775 : 2007

    Current The latest, up-to-date edition.

    GAS SUPPLY - GAS PIPEWORK FOR BUILDINGS - MAXIMUM OPERATING PRESSURE LESS THAN OR EQUAL TO 5 BAR - FUNCTIONAL RECOMMENDATIONS

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    Published date:  17-10-2007

    Publisher:  Ente Nazionale Italiano di Unificazione (UNI)

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

    INDICE
    PREMESSA
    INTRODUZIONE
    1 SCOPO E CAMPO DI APPLICAZIONE
    2 RIFERIMENTI NORMATIVI
    3 TERMINI E DEFINIZIONI
      3.1 Definizioni relative alla pressione
      3.2 Definizioni relative agli impianti a gas
      3.3 Definizioni relative ai dispositivi di
          intercettazione
      3.4 Definizioni relative ai sistemi di giunzione
      3.5 Definizioni relative ai componenti
      3.6 Definizioni relative alle prove
      3.7 Definizioni relative alla messa in servizio,
          funzionamento e manutenzione
      3.8 Definizioni relative ai processi di assemblaggio
          3.8.1 Definizioni per la saldatura
          3.8.2 Definizioni per la saldatura e la brasatura
    4 PROGETTAZIONE
      4.1 Generalità
      4.2 Selezione dei componenti
      4.3 Luogo di installazione
      4.4 Protezione antincendio
      4.5 Dimensionamento
      4.6 Dispositivi di sicurezza
    5 COSTRUZIONE
      5.1 Installazione
      5.2 Metodi di collegamento delle tubazioni
          5.2.1 Giunti filettati
          5.2.2 Giunti saldati, brasati e per fusione
          5.2.3 Giunti meccanici
          5.2.4 Giunti a pressare
          5.2.5 Collegamento di tubazioni semirigide
                corrugate di acciaio inossidabile
      5.3 Attraversamento di muri e pavimenti
      5.4 Corrosione
      5.5 Dispositivi di intercettazione
      5.6 Regolatori di pressione e contatori del gas
      5.7 Tubazioni flessibili per collegamento di
          apparecchi
    6 PROVE
      6.1 Raccomandazioni generali
      6.2 Raccomandazioni relative alla sicurezza di
          persone e cose durante le prove
      6.3 Fluidi di prova
          6.3.1 Fluidi utilizzati
          6.3.2 Utilizzo di gas inerte
          6.3.3 Utilizzo del gas distribuito
      6.4 Condizioni di prova
      6.5 Prova di resistenza meccanica
      6.6 Prova di tenuta
      6.7 Prove supplementari
    7 MESSA IN SERVIZIO
      7.1 Generalità
      7.2 Messa in gas
    8 ESERCIZIO E MANUTENZIONE
      8.1 Generalità
      8.2 Manutenzione
      8.3 Situazioni anomale
      8.4 Ricerca di perdite
      8.5 Lavori durante l'esercizio
      8.6 Messa fuori servizio
    APPENDICE A (informativa) - RESISTENZA ALLE ALTE
                TEMPERATURE
              A.1 Generalità
              A.2 Procedimento A
                  A.2.1 Criteri di prova
                  A.2.2 Metodo di prova
              A.3 Procedimento B
                  A.3.1 Criteri di prova
                  A.3.2 Metodo di prova
    APPENDICE B (informativa) - LINEE GUIDA GENERALI
                PER LA REALIZZAZIONE DI GIUNTI
              B.1 Generalità
              B.2 Operatori
              B.3 Controllo qualità
              B.4 Documentazione
    APPENDICE C (informativa) - LINEE GUIDA PER LA
                REALIZZAZIONE DI GIUNTI SALDATI, BRASATI
                E BRASATI FORTE E DI GIUNTI OTTENUTI
                MEDIANTE SALDATURA PER FUSIONE DEL
                POLIETILENE
              C.1 Saldatura dell'acciaio
                  C.1.1 Materiali
                  C.1.2 Approvazione del procedimento
                        di saldatura
                  C.1.3 Tubazioni con una pressione di
                        esercizio massima (MOP) minore o
                        uguale a 0,1 bar e uno spessore
                        delle pareti minore di 4 mm
                  C.1.4 Tubazioni con una pressione di
                        esercizio massima (MOP) maggiore
                        di 0,1 bar o uno spessore delle
                        pareti di 4 mm o maggiore
              C.2 Brasatura e brasatura forte del rame e
                  sue leghe
                  C.2.1 Materiali
                  C.2.2 Procedimento di brasatura e brasatura
                        forte
                  C.2.3 Tubazioni con una pressione di
                        esercizio massima (MOP) minore
                        o uguale a 0,1 bar
                  C.2.4 Tubazioni con una pressione di
                        esercizio massima (MOP) maggiore
                        di 0,1 bar
              C.3 Giunzione mediante fusione del polietilene
                  C.3.1 Materiali
                  C.3.2 Procedimento di giunzione mediante
                        fusione del polietilene
                  C.3.3 Qualifica del personale
                  C.3.4 Controllo qualità
    APPENDICE D (informativa) - LINEE GUIDA PER LA
                REALIZZAZIONE DI GIUNTI A PRESSARE
              D.1 Procedimento di giunzione con raccordi
                  a pressare sui tubi di rame
                  D.1.1 Generalità
                  D.1.2 Processo di installazione
              D.2 Procedimento di giunzione con raccordi
                  a pressare su tubi multistrato e tubi PEX
                  D.2.1 Generalità
                  D.2.2 Processo di installazione
    APPENDICE E (informativa) - LINEE GUIDA PER LA
                REALIZZAZIONE DI SISTEMI DI TUBAZIONI
                CORRUGATE SEMIRIGIDE DI ACCIAIO INOSSIDABILE
              E.1 Generalità
              E.2 Componenti del sistema
              E.3 Procedimento di collegamento di sistemi
                  di tubazioni corrugate semirigide di
                  acciaio inossidabile
                  E.3.1 Generalità
                  E.3.2 Formazione del personale
                  E.3.3 Controllo qualità
    BIBLIOGRAFIA

    Abstract - (Show below) - (Hide below)

    Describes general recommendations for the design, construction, testing, commissioning, operation and maintenance of installation pipework; pipework between the delivery point of the gas and the inlet connection to the gas appliance.

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

    Committee CT 105
    Document Type Standard
    Publisher Ente Nazionale Italiano di Unificazione (UNI)
    Status Current

    Standards Referenced By This Book - (Show below) - (Hide below)

    UNI/TR 11481 : 2013 Usi del polietilene nelle linee dirette e nella distribuzione del gas combustibile - Tecnologie riconosciute e applicabili - Linee guida di orientamento per gli operatori
    UNI 11522 : 2014 COMBUSTIBLE GAS AND CARBON MONOXIDE DETECTORS FOR DOMESTIC AND SIMILAR PREMISES - INSTALLATION AND MAINTENANCE
    UNI/TS 11343 : 2009 GAS PLANTS FOR DOMESTIC USE - GAS PLANTS FOR DOMESTIC USES SUPPLIED BY DISTRIBUTION NETWORKS, BY LPG CYLINDERS AND LPG STORAGE TANKS, PERFORMED WITH MULTILAYER PIPES - DESIGN, INSTALLATION AND MAINTENANCE
    UNI 11353 : 2010 STAINLESS STEEL CORRUGATED FLEXIBLE SAFETY HOSE ASSEMBLIES FOR THE CONNECTION OF GAS APPLIANCES FOR DOMESTIC AND SIMILAR USES - SAFETY REQUIREMENTS
    UNI 11528 : 2014 GAS PLANTS OVER 35 KW - DESIGN, INSTALLATION AND COMMISSIONING
    UNI 10619-2 : 2014 GAS PRESSURE CONTROL SYSTEMS AND/OR GAS MEASUREMENT INSTALLATIONS FOR INLET MAX PRESSURE UP TO 12 BAR FOR INDUSTRIAL AND DOMESTIC USE - PART 2: DESIGN, CONSTRUCTION AND TESTING - EQUIPMENT FOR GAS CONTROL
    UNI 11137 : 2012 GAS PLANTS FOR DOMESTIC AND SIMILAR USES - GUIDELINES FOR TEST AND FOR THE RESTORATION OF THE TIGHTNESS OF INNER PLANTS - GENERAL PRESCRIPTIONS AND REQUIREMENTS FOR THE SECOND AND THIRD FAMILY GASES
    UNI 7131 : 2014 LPG PLANTS FOR DOMESTIC USE NOT FED BY A DISTRIBUTION NETWORK - DESIGN, INSTALLATION AND COMMISSIONING
    UNI 11179 : 2006 FITTINGS WITH PRESS-ENDS FOR METALLIC PIPING
    UNI 11554 : 2014 NON-REGULATED PROFESSIONS - GAS OPERATORS WORKING ON GAS PLANTS SUPPLIED BY DISTRIBUTION NETWORK - KNOWLEDGE, SKILL AND COMPETENCE REQUIREMENTS
    UNI 10619-1 : 2014 GAS PRESSURE CONTROL SYSTEMS AND/OR GAS MEASUREMENT INSTALLATIONS FOR INLET MAX PRESSURE UP TO 12 BAR FOR INDUSTRIAL AND DOMESTIC USE - PART 1: DESIGN, CONSTRUCTION AND TESTING - GENERAL
    UNI 11137-1 : 2004 GAS PLANTS FOR DOMESTIC AND SIMILAR USES - GUIDELINES FOR TEST AND FOR THE RESTORATION OF THE TIGHTNESS OF INNER PLANTS IN SERVICE - PART 1: GENERAL PROVISIONS AND REQUIREMENTS FOR GASES OF THE 1 AND 2 FAMILY

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

    EN 1254-3:1998 Copper and copper alloys - Plumbing fittings - Part 3: Fittings with compression ends for use with plastics pipes
    EN 444:1994 Non-destructive testing - General principles for radiographic examination of metallic materials by X- and gamma-rays
    EN ISO 5817:2014 Welding - Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) - Quality levels for imperfections (ISO 5817:2014)
    EN 751-3:1996/AC:1997 Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 3: Unsintered PTFE tapes
    EN 1555-3:2010+A1:2012 Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 3: Fittings
    EN 1045:1997 Brazing - Fluxes for brazing - Classification and technical delivery conditions
    EN 1515-1:1999 Flanges and their joints - Bolting - Part 1: Selection of bolting
    EN 12007-3:2015 Gas infrastructure - Pipelines for maximum operating pressure up to and including 16 bar - Part 3: Specific functional requirements for steel
    EN 1254-4:1998/AC:1999 COPPER AND COPPER ALLOYS - PLUMBING FITTINGS - PART 4: FITTINGS COMBINING OTHER END CONNECTIONS WITH CAPILLARY OR COMPRESSION ENDS
    EN 440 : 1994 WELDING CONSUMABLES - WIRE ELECTRODES AND DEPOSITS FOR GAS SHIELDED METAL ARC WELDING OF NON ALLOY AND FINE GRAIN STEELS - CLASSIFICATION
    EN 10226-2:2005 Pipe threads where pressure tight joints are made on the threads - Part 2: Taper external threads and taper internal threads - Dimensions, tolerances and designation
    EN ISO 15613:2004 Specification and qualification of welding procedures for metallic materials - Qualification based on pre-production welding test (ISO 15613:2004)
    EN 1254-5:1998 Copper and copper alloys - Plumbing fittings - Part 5: Fittings with short ends for capillary brazing to copper tubes
    EN 1057:2006+A1:2010 Copper and copper alloys - Seamless, round copper tubes for water and gas in sanitary and heating applications
    EN ISO 15612:2004 Specification and qualification of welding procedures for metallic materials - Qualification by adoption of a standard welding procedure (ISO 15612:2004)
    ISO 15610:2003 Specification and qualification of welding procedures for metallic materials — Qualification based on tested welding consumables
    ISO 9454-2:1998 Soft soldering fluxes Classification and requirements Part 2: Performance requirements
    EN 1254-1:1998 Copper and copper alloys - Plumbing fittings - Part 1: Fittings with ends for capillary soldering or capillary brazing to copper tubes
    EN 12007-1:2012 Gas infrastructure - Pipelines for maximum operating pressure up to and including 16 bar - Part 1: General functional requirements
    EN 1254-2:1998 Copper and copper alloys - Plumbing fittings - Part 2: Fittings with compression ends for use with copper tubes
    EN 751-2:1996 Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 2: Non-hardening jointing compounds
    ISO 12176-1:2017 Plastics pipes and fittings — Equipment for fusion jointing polyethylene systems — Part 1: Butt fusion
    EN ISO 9454-2:2000 Soft soldering fluxes - Classification and requirements - Part 2: Performance requirements (ISO 9454-2:1998)
    EN 473:2008 Non-destructive testing - Qualification and certification of NDT personnel - General principles
    EN 15266:2007 Stainless steel pliable corrugated tubing kits in buildings for gas with an operating pressure up to 0,5 bar
    PREN 15001-1 : DRAFT 2017 GAS INFRASTRUCTURE - GAS INSTALLATION PIPEWORK WITH AN OPERATING PRESSURE GREATER THAN 0,5 BAR FOR INDUSTRIAL INSTALLATIONS AND GREATER THAN 5 BAR FOR INDUSTRIAL AND NON-INDUSTRIAL INSTALLATIONS - PART 1: DETAILED FUNCTIONAL REQUIREMENTS FOR DESIGN, MATERIALS, CONSTRUCTION, INSPECTION AND TESTING
    ISO 12176-2:2008 Plastics pipes and fittings — Equipment for fusion jointing polyethylene systems — Part 2: Electrofusion
    EN 1011-2:2001/A1:2003 WELDING - RECOMMENDATIONS FOR WELDING OF METALLIC MATERIALS - PART 2: ARC WELDING OF FERRITIC STEELS
    EN 1044 : 1999 BRAZING - FILLER METALS
    ISO 15612:2004 Specification and qualification of welding procedures for metallic materials Qualification by adoption of a standard welding procedure
    ISO 5817:2014 Welding — Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) — Quality levels for imperfections
    EN ISO 15611:2003 Specification and qualification of welding procedures for metallic materials - Qualification based on previous welding experience (ISO 15611:2003)
    EN ISO 228-1:2003 Pipe threads where pressure-tight joints are not made on the threads - Part 1: Dimensions, tolerances and designation (ISO 228-1:2000)
    ISO 15614-1:2017 Specification and qualification of welding procedures for metallic materials — Welding procedure test — Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys
    EN 12279:2000/A1:2005 GAS SUPPLY SYSTEMS - GAS PRESSURE REGULATING INSTALLATIONS ON SERVICE LINES - FUNCTIONAL REQUIREMENTS
    ISO 15609-1:2004 Specification and qualification of welding procedures for metallic materials Welding procedure specification Part 1: Arc welding
    ISO 15611:2003 Specification and qualification of welding procedures for metallic materials — Qualification based on previous welding experience
    EN 437:2003+A1:2009 Test gases - Test pressures - Appliance categories
    ISO/IEC 17020:2012 Conformity assessment — Requirements for the operation of various types of bodies performing inspection
    EN 1555-4:2011 Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 4: Valves
    EN 10241:2000 Steel threaded pipe fittings
    EN 751-1:1996 Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 1: Anaerobic jointing compounds
    EN ISO 15609-1:2004 Specification and qualification of welding procedures for metallic materials - Welding procedure specification - Part 1: Arc welding (ISO 15609-1:2004)
    EN 1555-5:2010 Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 5: Fitness for purpose of the system
    EN 12007-2:2012 Gas infrastructure - Pipelines for maximum operating pressure up to and including 16 bar - Part 2: Specific functional requirements for polyethylene (MOP up to and including 10 bar)
    EN 499 : 1994 WELDING CONSUMABLES - COVERED ELECTRODES FOR MANUAL METAL ARC OF NON ALLOY AND FINE GRAIN STEELS - CLASSIFICATION
    ISO 9453:2014 Soft solder alloys Chemical compositions and forms
    EN 1555-2:2010 Plastics piping systems for the supply of gaseous fuels - Polyethylene (PE) - Part 2: Pipes
    EN 13067:2012 Plastics welding personnel - Qualification testing of welders - Thermoplastics welded assemblies
    ISO 15613:2004 Specification and qualification of welding procedures for metallic materials Qualification based on pre-production welding test
    ISO 834-1:1999 Fire-resistance tests Elements of building construction Part 1: General requirements
    EN 14291:2004 Foam producing solutions for leak detection on gas installations
    EN ISO 15610:2003 Specification and qualification of welding procedures for metallic materials - Qualification based on tested welding consumables (ISO 15610:2003)
    ISO 15607:2003 Specification and qualification of welding procedures for metallic materials General rules
    EN 1762:2017 Rubber hoses and hose assemblies for liquefied petroleum gas, LPG (liquid or gaseous phase), and natural gas up to 25 bar (2,5 MPa) - Specification
    EN 331:2015 Manually operated ball valves and closed bottom taper plug valves for gas installations for buildings
    EN 14717:2005 Welding and allied processes - Environmental check list
    EN 10208-1:2009 Steel pipes for pipelines for combustible fluids - Technical delivery condi-tions - Part 1: Pipes of requirement class A
    EN 29453 : 1993 SOFT SOLDER ALLOYS - CHEMICAL COMPOSITIONS AND FORMS
    CR 13737:2001 Implementation Guide for functional standards prepared by CEN/TC 234 "Gas supply"
    EN 10242:1994/A2:2003 THREADED PIPE FITTING IN MALLEABLE CAST IRON
    EN 970:1997 Non-destructive examination of fusion welds - Visual examination
    EN 10226-1:2004 Pipe threads where pressure tight joints are made on the threads - Part 1: Taper external threads and parallel internal threads - Dimensions, tolerances and designation
    EN 12799:2000/A1:2003 BRAZING - NON-DESTRUCTIVE EXAMINATION OF BRAZED JOINTS
    ISO 228-1:2000 Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and designation
    EN 14800:2007 Corrugated safety metal hose assemblies for the connection of domestic appliances using gaseous fuels
    EN ISO 15607:2003 Specification and qualification of welding procedures for metallic materials - General rules (ISO 15607:2003)
    EN ISO/IEC 17020:2012 Conformity assessment - Requirements for the operation of various types of bodies performing inspection (ISO/IEC 17020:2012)
    EN 10255:2004+A1:2007 Non-Alloy steel tubes suitable for welding and threading - Technical delivery conditions
    EN 1776:2015 Gas infrastructure - Gas measuring systems - Functional requirements
    EN 287-1:2011 Qualification test of welders - Fusion welding - Part 1: Steels
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