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If oxygen entry is unavoidable—such as when technicians must enter a vessel for inspections—the focus shifts to eliminating moisture, which acts as the electrolyte for acid formation. I can provide tailored steps or chemical calculation
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Circulate Na₂CO₃ + NaNO₃ solution before breaching containment. Neutralize potential acid formation on contact.
Utilizing stabilized grades of stainless steel, such as Type 321 (stabilized with titanium) or Type 347 (stabilized with niobium), helps prevent sensitization. These stabilizing elements bind with carbon at high temperatures, preventing chromium depletion at the grain boundaries.
Air introduced into the system must be dehumidified to a very low dew point (typically below -18°C or 0°F).