EN 1474-2:2008

Foreword
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
4 Description of typical LNG transfer hose designs and accessories
  4.1 A LNG transfer hose system shall consist of the following
       4.1.1 A flexible hose assembly, comprising
       4.1.2 Connection system to LNGC
       4.1.3 Emergency release system
       4.1.4 Handling
       4.1.5 Power systems
       4.1.6 Leak detection, monitoring and alarm systems
  4.2 Typical construction of LNG transfer hoses
       4.2.1 Main hose categories
       4.2.2 Corrugated metal hoses
       4.2.3 Composite hoses
5 Design features of the LNG transfer hoses and transfer hoses
  assemblies
  5.1 General
  5.2 Application data required
  5.3 Selection of hose length
  5.4 Service life
  5.5 Selection of hose size
  5.6 Selection of buoyancy
  5.7 Selection of insulation
  5.8 Basic design parameters
  5.9 Component details - End fitting
       5.9.1 General
       5.9.2 Termination
       5.9.3 Connector
       5.9.4 Bending stiffener/restrictor (optional)
  5.10 Hose handling/lifting device
  5.11 Safety systems
  5.12 Connection to the ship
  5.13 Hydraulic and electric control systems
6 Inspection and tests
  6.1 Foreword
  6.2 Laboratory testing
  6.3 Prototype hose testing
  6.4 Factory acceptance tests
       6.4.1 General
       6.4.2 All hoses
       6.4.3 FAT tests on one hose per order
  6.5 System testing
7 Quality assurance and control
  7.1 General
  7.2 Material selection
  7.3 Marking
  7.4 Manufacturing
  7.5 Documentation related to an approved certification process
8 Documentation
  8.1 For information a purchasing guidelines table is given
       in Annex A
  8.2 As-built documentation
  8.3 Operation manual
Annex A (informative) Purchasing guidelines table
Annex B (normative) Prototype and factory acceptance tests for
        LNG hose assemblies
Annex C (informative) Surge pressure considerations for LNG hoses
Bibliography

This European Standard gives general guidelines for the design, material selection, qualification, certification, and testing details for Liquefied Natural Gas (LNG) transfer hoses for offshore transfer or on coastal weather-exposed facilities for aerial, floating and submerged configurations or a combination of these. Whilst this European Standard is applicable to all LNG hoses, it is acknowledged that there may be further specific requirements for floating and submerged hoses.The transfer hoses will be designed to be part of transfer systems (it means that they will be fitted with ERS, QCDC, handling systems, hydraulic and electric components etc.) To avoid unnecessary repetition, cross-references to EN 1474-1 and EN 1474-3, are made for all compatible items, and for references, definitions and abbreviations. Where additional references, definitions and abbreviations are required specifically for LNG hoses, they are listed in this European Standard.Transfer hoses need to be durable when operating in the marine environment and to be flexible with a minimum bending radius compatible with handling and the operating requirements of the transfer system.