EN 1474-1:2008

Foreword
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
4 Design of the arms
   4.1 Definition of the length and the configuration of the
        arms, arms description
        4.1.1 General
        4.1.2 Balancing
        4.1.3 Arms dimensions and clearances
   4.2 Design basis
        4.2.1 Product line diameter and product data
        4.2.2 Material and grades
   4.3 Swivel joints
        4.3.1 General
        4.3.2 Product sealing arrangement
        4.3.3 Bearing system
        4.3.4 External sealing arrangement
        4.3.5 Design
   4.4 Structural bearings
        4.4.1 Cyclic movements
        4.4.2 Installation of structural bearings
        4.4.3 Protection of structural bearings
        4.4.4 Grease sampling point
   4.5 Accessories
        4.5.1 Adjustable support (jack)
        4.5.2 Nitrogen injection line
        4.5.3 Storage locking device
        4.5.4 Ladders and platforms
        4.5.5 Liquid nitrogen line
        4.5.6 Thermal insulation
   4.6 Pipework and fitting
   4.7 Welding
        4.7.1 Qualification
        4.7.2 Filler metals
   4.8 Corrosion protection, fire proofing and embrittlement
        protection
        4.8.1 Corrosion protection
        4.8.2 Embrittlement protection
   4.9 Maintenance
5 Safety systems
   5.1 General
   5.2 Two stage alarm and shut down system
        5.2.1 First stage
        5.2.2 Second stage
   5.3 Monitoring and alarm systems
        5.3.1 Arm positioning alarms system
        5.3.2 Arm constant position monitoring system (CPMS)
        5.3.3 Pressure and hydraulic level alarm
   5.4 Definition of alarm envelopes
   5.5 Safety devices
        5.5.1 General
        5.5.2 Safety devices on emergency release system (ERS)
        5.5.3 Fire safety requirements
        5.5.4 Electrical safety requirements
        5.5.5 Failure of electrical power supply
        5.5.6 Stray current protectors
        5.5.7 Bonding
6 Connection with the ship
   6.1 General
   6.2 QCDC body
   6.3 QCDC system
7 Hydraulic and electric control systems
   7.1 General
   7.2 Arms operations
   7.3 Hydraulic components
   7.4 Electric components
   7.5 Testing of control systems
   7.6 Remote control
   7.7 Jetty external equipment
8 Inspection and tests
   8.1 General
   8.2 Prototype testing
        8.2.1 Swivels
        8.2.2 ERS
        8.2.3 QCDC
   8.3 Manufacturing
        8.3.1 Materials
        8.3.2 Non destructive testing
        8.3.3 Insulation flange (stray current protector)
   8.4 Factory acceptance tests
        8.4.1 Swivel
        8.4.2 Structural bearing
        8.4.3 ERS
        8.4.4 QCDC
        8.4.5 Insulation flange (stray current protector)
        8.4.6 Hydraulic circuit test
        8.4.7 Transfer arm assembly test
        8.4.8 Site acceptance tests
9 Quality assurance and control
   9.1 Quality system
   9.2 Quality plan
10 Required documentation
   10.1 Tender documentation
   10.2 Contract documentation
Annex A (informative) Materials
Annex B (informative) Constant Position Monitoring System (CPMS)
Annex C (informative) Suggestions for arms alarms setting and
        ESD/ERS activation
Annex D (normative) Tables D.1 to D.17 and Figures D.1 to D.4
Annex E (informative) Figures E.1 to E.3
Bibliography

This European Standard specifies the design, minimum safety requirements and inspection and testing procedures for liquefied natural gas (LNG) transfer arms intended for use on conventional onshore (LNG) terminals ). It also covers the minimum requirements for safe LNG transfer between ship and shore.Although the requirements for remote control power systems are covered, the standard does not include all the details for the design and fabrication of standard parts and fittings associated with transfer arms.The content of this European Standard is supplementary to local or national standards and regulations and is additional to the requirements of EN 1532 and EN 1473.