EN ISO 20088-3:2019 PDF

Overview

EN ISO 20088-3:2019 - Determination of the resistance to cryogenic spillage of insulation materials, Part 3: Jet release (ISO 20088-3:2018) is a standardized laboratory test method adopted by CEN to assess how cryogenic spill protection (CSP) systems perform when struck by a pressurized cryogenic jet. The method uses liquid nitrogen (nominal test pressure ~8 barg) to simulate the thermal and mechanical loads from accidental releases and is representative of an LNG jet through a 20 mm orifice (or smaller) at release pressures up to 6 barg (simulated at 1 m from the release point). The standard is intended for CSP systems installed on carbon steel that will be exposed to cryogenic fluids.

Key Topics and Requirements

• Scope and intent: Evaluates resistance of insulation materials and CSP systems to localized, high-momentum cryogenic jets (non-immersion scenarios).
• Test apparatus: Defined construction and configuration for nozzle, specimen support, and recirculation chamber to reproduce jet impingement.
• Cryogenic medium: Uses liquid nitrogen for safety and repeatability while being representative of certain LNG release scenarios.
• Instrumentation: Thermocouple placement and measurement uncertainty requirements to capture thermal response.
• Test procedure: Stepwise test environment setup, run conditions, data collection and criteria for material/system failure.
• Quality assurance: Includes repeatability/reproducibility guidance, uncertainty analysis, and requirements for the test report.
• Safety considerations: Warnings about liquid nitrogen hazards (condensed oxygen, asphyxiation, cold burns) and necessary risk assessment/PPE measures.
• Annexes and classification: Normative annexes for thermocouple fixing and a complete setup; informative annex for classification of results.

Applications

• Material qualification: Verify coatings, spray-applied materials and preformed insulation systems for LNG and cryogenic plant service.
• Design validation: Confirm CSP designs for piping, vessels and structural steel against localized jet exposure.
• Risk assessment & safety case: Provide experimental evidence for consequence analysis of pressurized cryogenic releases.
• Procurement & compliance: Specify test-based acceptance criteria in supplier contracts and certification dossiers.
• Laboratory test programs: Standardized method for test labs performing cryogenic jet resistance testing.

Who Should Use This Standard

• LNG and cryogenic plant designers and engineers
• Insulation material manufacturers and coating suppliers
• Test laboratories and certification bodies
• Safety engineers, asset owners and regulators involved in cryogenic spill risk management

Related Standards

• ISO 20088-1: Cryogenic releases leading to pooling conditions
• ISO 20088-2: Vapour-phase exposure from jet or low-pressure releases
• Adopted as EN ISO 20088-3:2019 by CEN (CEN/TC 282)

Keywords: EN ISO 20088-3:2019, cryogenic spillage, cryogenic spill protection, jet release, insulation materials, liquid nitrogen, LNG, CSP system, test method.