: High flow rates in pipes or agitation in tanks can physically "wash away" the iron sulfate layer, exposing fresh steel to the acid's bite. : The standard defines "ambient" as up to 50°C (120°F)
NACE RP 0391 outlines several technical requirements to ensure the mechanical integrity of acid systems: nace rp 0391 pdf
: Detailed information on the use of carbon steel , including its corrosion resistance and risks like hydrogen grooving or localized turbulence. : High flow rates in pipes or agitation
NACE International updates standards every 5 years to reflect new industry research, failure data, and safety regulations. and safety regulations.