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Assessment of Thickness Loss on Annular Plate of Double Wall API-620 Tank

Thread starter shehzad305
Start date Jul 27, 2017

Status: Not open for further replies.

Jul 27, 2017

shehzad305

Materials

Good Day Members,

We have double wall Ethylene Refrigeration tank designed per API-620. Thickness loss is detected on annular ring projected outside the outer tank. Assessment procedures in API-653 are only applicable to tank constructed as per API-650 and API-12C. Similarly API 579-1 don't address assessment of annular/bottom plates.
Can anyone guide me with the procedure to assess the condition for future operation.

Thanks & Regards.