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Recent content by aasd25

  1. aasd25

    Carbon Steel Corrosion/damage

    Hi mrfailure, Yes we are going to do that soon. I just would like to have some insights if anyone here have seen a similar damage before.
  2. aasd25

    Carbon Steel Corrosion/damage

    Hi Corroneer, In fact the highest temperature observed before the failure was 373°C. This is the fluid temperature, not the CS surface temperature, I guess it could be close to 373°C but still within the design temperature. If it is high temperature damage, does it mean that the material is...
  3. aasd25

    Carbon Steel Corrosion/damage

    Thanks Lee! I will check on it.
  4. aasd25

    Carbon Steel Corrosion/damage

    Hi SJones, I don't think it is CUI because it is not on the surface in contact with the insulation material. It is the inner side. It is strange to see carbon steel material turned into layers like this, never seen that before.
  5. aasd25

    Carbon Steel Corrosion/damage

    Hi cap1a79, i) Temperature - ~300 C ii) Service unit / Detail location: hydrocracker unit iii) Type of the facility: heat exchanger iv) Any corrosive component: shouldn't be but Cl and S was detected on the CS piece
  6. aasd25

    Carbon Steel Corrosion/damage

    Hello experts, I'd like to get your opinion on the type of failure of this carbon steel (SA516 gr70N). See attached pictures. The pieces that came out from the main part seem to have multi layers. I'm not sure if this is a type of corrosion or a material problem. This carbon steel part is in...
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