Case story

SUPERDUPLEX AND DUPLEX EXPANSION JOINTS

Floating liquefied nitrogen gas (FLNG) facility

Australia

EJMA

Belman has delivered two special Expansion Joints for a floating liquefied nitrogen gas (FLNG) facility – in Australia. The Expansion Joints were installed in the Mono Ethylene Glycol (MEG) modules.

 

Special material required
Due to the media, and as a special project requirement, both the Bellows and the flanges of the Expansion Joints were completely manufactured from Duplex and Superduplex. Belman has significant experience gained from multiple projects in the manufacture of Expansion Joint solutions from these materials. An additional project requirement demanded that the complete Expansion Joint, including the Bellows should be coated. Considering the materials chosen this was quite unusual. A Hempel paint system was selected due to its excellent suitability for use with duplex materials. A special primer and a topcoat were applied due to the offshore marine and salt laden environment.

 

Type approved supplier
Belman holds several type approvals from 3rd party authorities such as BV, DNV, KRS, ABS and Lloyd’s Register. This helps to simply project management for our clients. However for this special project, our Lloyd’s Register type approval did not provide cover due to the material and the medium involved. Therefore a special approval of the drawings and pressure test inspection were made.

 

LNG/LPG references
Belman has an impressive list of references for Expansion Joints for LNG/LPG carriers. Also we work closely with both end users and also the EPC/engineering companies involved such as for example: Technip, Hyundai Heavy Industries and Samsung etc. Belman also performs special material tests under 3rd party surveillance /No Bo according to IGC Code 3 LNG/LPG.

DESIGN FEATURES

The Duplex and Superduplex Expansion Joints for the FLNG have the following design parameters:

Dimension: DN 200, DN 100 • Installation length: 276, 294 mm • Medium: MEG • Design pressure: -1/7 BarG • Design temperature: -30/150°C • AX: +/-12 mm • Bellow: 1.4462 (Duplex) and 1.4501 (Superduplex) • Flanges: 1.4462 (Duplex) and 1.4410 (SAF 2507) • Design code: EJMA

CLIENT BENEFIT

  • Suitable solution for the application
  • Reliability of the Expansion Joint designed to work despite the critical media involved
  • Excellent resistance towards corrosion
  • Optimal material for the saline conditions surrounding the application
  • Guaranteed to deliver safe, reliable and smooth operation.
  • Benefit from the considerable know-how of an experienced manufacturer
RELATED INFORMATION

TECHNICAL information

  • Technical information on Expansion Joint materials is available in the Expansion Joint Catalogue
    page 54-55
  • Resistance tables, to help you find the proper material for the application and media you are working with, is available in the Expansion Joint Catalogue
    page 440-459

REFERENCES 

Dubai Drydocks • BW LPG • YAMAL LNG • Solvang • Wärtsilä Gas Solutions A/S • Dorian LPG • Neptun Werft • Pertramina  • Shell •
Aker Process Systems • Huyndai Heavy Inbdustries Co. Ltd. •
Hanjin Heavy Industries & Construction • BW LNG • Keppel Offshore & Marine • Öresund Drydocks AB • Hamworthy • Moss Maritime • Setubal Shipyard •  Cosco Shipyard • Linde Engineering (Cryo AB) • Höegh LNG • Transpetrol • Huyndai MIPO Dockyard • Exmar • KSS Line •

TRUSTED CRAFTMANSHIP

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