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Cryogenic Spillage Protection (CSP) on FLNG: Improving Safety Through Standardization

Picture for Cryogenic Spillage Protection (CSP) on FLNG: Improving Safety Through Standardization
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Planned operation of natural gas liquefaction units offshore has raised new safety concerns. Technip has run a physical test program to investigate performances of insulation materials as well as developing a test method.

 

Product Number: 51317--8968-SG
ISBN: 8968 2017 CP
Author: Sebastien Viale
Publication Date: 2017
Industries: Maritime , Oil and Gas Production
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The steel decks and structures of an FLNG must be protected against brittle fracture that can follow accidental LNG spillage. The resultant structural failures put at risk lives and assets yet LNG spill mechanisms are barely understood and the epoxy materials used so far for CSP are expensive and can be improved.For the first FLNG projects CSP materials were derived from passive fire protection (PFP) with increased thicknesses to extend the domain of application. A need for improvement was identified both in CSP material performance testing and product design.In this paper we will present the outcome of a Technip led Joint Industry Project as well as ISO activity on CSP.During the test campaign many products were evaluated for their ability to improve structural design and decrease the need for IMR (Inspection Maintenance and Repair). Initial screening was followed by physical tests to assess performance.In parallel we participated to the creation of an ISO committee dedicated to the publication of standards on materialtestingfor CSP.The paper will present our tests results and the test method to assess material resistance during accidental cryogenic release now included in a new standard ISO 20088-1.

Keywords: Cryogenic Spillage Protection, ISO 20088.

The steel decks and structures of an FLNG must be protected against brittle fracture that can follow accidental LNG spillage. The resultant structural failures put at risk lives and assets yet LNG spill mechanisms are barely understood and the epoxy materials used so far for CSP are expensive and can be improved.For the first FLNG projects CSP materials were derived from passive fire protection (PFP) with increased thicknesses to extend the domain of application. A need for improvement was identified both in CSP material performance testing and product design.In this paper we will present the outcome of a Technip led Joint Industry Project as well as ISO activity on CSP.During the test campaign many products were evaluated for their ability to improve structural design and decrease the need for IMR (Inspection Maintenance and Repair). Initial screening was followed by physical tests to assess performance.In parallel we participated to the creation of an ISO committee dedicated to the publication of standards on materialtestingfor CSP.The paper will present our tests results and the test method to assess material resistance during accidental cryogenic release now included in a new standard ISO 20088-1.

Keywords: Cryogenic Spillage Protection, ISO 20088.

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