EN 13766:2018/prA1

Overview

EN 13766:2018/prA1 is a European Standard specifying requirements for thermoplastic multi-layer (non-vulcanized) hoses and hose assemblies designed for the transfer of liquid petroleum gas (LPG) and liquefied natural gas (LNG). Developed by the CEN Technical Committee CEN/TC 218, this standard addresses the unique demands of hoses used in both onshore and offshore environments, ensuring safety, reliability, and performance.

This standard applies to hose sizes ranging from 25 mm to 250 mm, working pressures between 10.5 bar and 25 bar, and operating temperatures from -196 °C to +45 °C. It covers two main hose types, each divided into classes suitable for onshore and offshore duties. The standard also references complementary offshore LNG hose assembly specifications found in EN 1474-2.

Key Topics

• Thermoplastic Multi-layer Construction
  The hoses and assemblies use a non-vulcanized, multi-layer thermoplastic design, offering flexibility, durability, and resistance to extreme temperatures and pressures characteristic of LPG and LNG transfer.

• Operating Conditions

  • Hose sizes: 25 mm to 250 mm diameter
  • Working pressures: 10.5 bar to 25 bar
  • Temperature range: from cryogenic -196 °C (for LNG) up to +45 °C

• Classes for Onshore and Offshore Use
  The standard differentiates assemblies based on environmental exposure and operational challenges typical to either onshore facilities or offshore platforms.

• Physical Properties and Testing
  The amendment EN 13766:2018/prA1 updates testing references, including specifying EN ISO 10619-2 for measuring low temperature flexibility through bending tests under sub-ambient conditions, which is critical for LNG applications.

• Normative References
  Integration with other standards and test methods ensures harmonized safety and quality assurance across industries handling LPG and LNG.

Applications

EN 13766:2018/prA1 standardized hoses and hose assemblies are essential components in the energy sector, specifically for:

• Liquefied Petroleum Gas (LPG) Transfer
  Used in refueling stations, distribution terminals, and industrial processes where LPG handling requires flexible and robust transfer lines.

• Liquefied Natural Gas (LNG) Transfer
  Critical in LNG import/export terminals, maritime bunkering operations, and offshore facilities where cryogenic fluid transfer safety and performance are paramount.

• Onshore and Offshore Installations
  The classification system helps specify hoses suited to the rigors of offshore environments-including exposure to seawater, mechanical stress, and varying temperature extremes-as well as the comparatively stable conditions found onshore.

• Cryogenic Fluid Handling
  Hoses complying with this standard support safe liquid natural gas operations at extremely low temperatures, enabling reliable fuel transfer and minimizing thermal degradation.

Related Standards

To complement EN 13766:2018/prA1, industry professionals often reference:

• EN 1474-2
  Specification for offshore LNG hose assemblies, detailing additional requirements relevant to marine and offshore LNG operations.

• EN ISO 10619-2
  Defines methods for measuring hose flexibility and stiffness at low temperatures, critical for assessing performance under cryogenic conditions.

• Other CEN/TC 218 Standards
  Covering rubber and plastic hoses and assemblies for a wide range of applications, supporting consistent testing and quality criteria.

Summary

EN 13766:2018/prA1 sets a vital framework for manufacturers, installers, and operators of thermoplastic multi-layer hoses and assemblies used in liquid petroleum gas and liquefied natural gas transfer. Adhering to this standard ensures enhanced safety, performance, and compliance in demanding onshore and offshore environments. Its focus on physical properties, environmental suitability, and rigorous testing procedures supports the critical infrastructure of today’s energy transport systems.

Keywords: thermoplastic multi-layer hoses, LPG transfer hoses, LNG hoses, cryogenic hoses, hose assemblies, liquid petroleum gas, liquefied natural gas, EN 13766, CEN standards, offshore hose assemblies, onshore hose specifications, low temperature flexibility testing.