Compatibility with liquid oxygen
Objectives
Avoiding the risk of reaction of materials in contact with liquid oxygen and ensuring the safety of users.
Risks related to liquid oxygen
Liquid oxygen (oxygen cooled below its condensation point, i.e. -183°C) can cause a violent reaction in contact with some materials.
Materials intended for use in liquid oxygen must pass a compatibility test before use.
What is the liquid oxygen compatibility test?
Our technicians perform this test according to EN 1797 or ISO 21010, derived from ASTM D25-12 and ASTM G86.
- The sample to be tested is placed in an aluminium alloy container (5052) or in stainless steel inserts.
- The container is filled with liquid oxygen, the temperature of which is equal to -183 ° C.
- This unit is positioned in a clean and inert reaction chamber.
- An impactor (approx. 10 kg) is dropped vertically at a height of approximately 1 m onto a stainless steel punch, previously cooled with liquid oxygen. It transmits the energy to the sample to be tested.
What is the objective? Checking if there is a reaction (spark, detonation, etc.) at the moment of impact.
This procedure is repeated on 20 samples.
Our failure analysis activities
Oxygen failures, mechanical failures, lifetime of methane steam reformer tubes, etc.
Contact CTE
AIR LIQUIDE Global E&C Solutions France - CTE
Campus Innovation Paris 1
Chemin de la Porte des Loges
78350 LES LOGES EN JOSAS
01 39 07 62 62