Nace Sp0170 Pdf — 2021

During normal refinery operations (particularly in hydroprocessing, desulfurization, and catalytic cracking units), hydrogen sulfide (

When oxygen and water mix with sulfide scales, they rapidly react to form ( H2SxO6cap H sub 2 cap S sub x cap O sub 6

The standard acknowledges that PTA SCC is an "inspection challenge." The damage often doesn't occur until after the unit has been opened up for maintenance (turnaround). NACE SP0170 works in conjunction with other non-destructive examination (NDE) techniques listed in references like API 571 for detection: nace sp0170 pdf 2021

What do you have available (to check chloride thresholds)? Share public link

View regional standard listings through the Accuris Standards Store or the national adoption catalog at Intertek Inform . Implementation of these standards is the responsibility of

Implementation of these standards is the responsibility of specialized inspection, operations, and maintenance teams during planned turnarounds.

The Chemistry of Polythionic Acid Stress Corrosion Cracking (PTA SCC) and catalytic cracking units)

The official document can be purchased and downloaded in PDF format from the AMPP Store (Association for Materials Protection and Performance).