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  1. aliim991

    Repair of cracks in SS 304 tubesheet?

    Thanks all for your responces! Cracks can be found all over the tubesheet and in between tubes. The concern if we continue grinding it may reach TTS welds where it will be beyond repair within SD window. We are evaluating applying thermal spray coating ( nickle based material) which been tried...
  2. aliim991

    Repair of cracks in SS 304 tubesheet?

    Yes we will be doing peneumatic leak test from shell side. Below photo showing crack location and shape. It is all over tubesheet
  3. aliim991

    Repair of cracks in SS 304 tubesheet?

    thanks Dhurjati for your reply, I think due to large number of welding on tubesheet, it get sensitized and that makes it more vulnerable to SCC than tubes. based on surface DPT inspection, these cracks are reaching TTS welds. Regards,
  4. aliim991

    Repair of cracks in SS 304 tubesheet?

    Greetings We have a SS 304 tubesheet found during Turaround suffering from huge number of stress corrosion cracking SCC (craze cracks); due to chloride or sulfur.. we tried to grind some for up to 2mm deep, however crack is still there. Tubesheet thickness is 160mm. Our concern, if we continue...

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