Dear AllIn one of my client facilities, we have observed cracks and leaks in 2 new hydrogenation reactors (MOC SS 316L) after very few batches (< 20 number) within a month of commissioning. Inspection agencies pointed to Chloride Induced Stress Corrosion although none of the raw materials used during operations contain any chloride (confirmed by testing). Could the chloride in the water used during hydro-test (during and after fabrication) of the reactor be enough source of chloride to damage the reactors? Operating T & P of 200 deg C and 35 bar in non-aqueous systemThanks
May I suggest you to take reference of these valuable information available in websites pertaining to hydrogen corrosion / hydrogen embrittlement to steel.
Andrews SPS. (1977) Modern processes for the production of ammonia, nitric acid and ammonium nitrite. In: Thompson R, editor. The modern inorganic chemicals industry. The proceedings of a symposium organized by the Inorganic chemicals group of the industrial division of the Chemical Society, London, March, 31- April, 1, 1977. Soc. Chem. Ind., London, U.K.