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Recent content by chok7

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    Repair of caustic stress corrosion cracking on non-PWHT tank

    Thanks Trestala, I've done some rough research into this but have now come to the conclusion that there is no real advantage between weld processes once CSCC has initiated. I will check out IGS's products, thanks.
  2. C

    Valve selection for phosphoric acid

    G'day, Trying to find further details around valving for an 85% phosphoric acid system at max 50 deg C temperature. Would standard 4" bayonet valves be suitable for this service? Being cast from ASTM A 216 Grade WCB. Or should phosphoric acid be limited to stainless steel valving. Thanks
  3. C

    Repair of caustic stress corrosion cracking on non-PWHT tank

    Hi all, General questions around repairs of caustic stress corrosion cracking in carbon steel storage tanks that have not been PWHT and see high-med strength cleaning caustic at approx 90 deg C. For context, fairly substantial CSCC is already present along most HAZ zones (transverse cracking)...

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