Archive for the “Heat Exchangers” Category

STRESS CORROSION CRACKING AND INTERGRANULAR CORROSION OF A 316Ti STAINLESS STEEL PREHEATER TUBE Summary: A cracked 316Ti stainless steel preheater tube was analyzed to determine the failure mechanism. A second non-cracked tube section from a different elevation was also analyzed to determine the condition of the tube material. The interior of the tube carries process […]

Failure Analysis of Pitted Still Condenser Tubes SUMMARY: Several concentrating still condenser tubes exhibiting pitting were received to determine the cause of pitting. Results indicate the condenser tubes pitted initially from the inner diameter (ID) surface due to microbiological corrosion (MIC). MIC pitting initiated preferentially at the tube seam weld. Additional ID surface pits and […]