Hi,
-- as you mentioned during shutdown if the tank is urgent to close then we can proceed with patch repair (patch size to be decide based on inspection advise) to avoid long duration consuming such replacement and hydrotest with end user approval. However after some of duration the entire bottom plate along with tank pad to be replaced.
All in based on end user approval.
Best Regards,
Ponraj Sivathanu,
On Sat, May 26, 2018 at 12:31 AM, Shanmugam <nss2410@gmail.com> wrote:
--Dear Experts,During sutdown after blasting tank bottom plates we observed lot of pitting corrosion. Some pitting are went through the entire thickness and some pittings are in the half way of the thickness.By following API 653 is it possible to repair with patch plate on the holes formed and went through the entire bottom plate thickness by pitting corrosion. Your kind suggestion is requested.Tank Construction code: API -650Bottom plate thickness - 8mm
With Regards,
N.S
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