[MW:15271] FW: API 653 'major repair'

 

Good day dear experts

 

I have trouble understanding the meaning of “major repair “ as per API 653. 3.23

 

We have done some tank bottom repair work on a fuel tank as per API 653. We had to cut an envelope into the tank shell (300mm x 2000mm) to get the repair plates into the tank. Is it a requirement as per API 653 to carry out a hydrostatic stand test.

The envelope is cut out of the “critical zone” area  and no repairs were done on the tank floor within the ‘critical zone’. Does the envelope constitute a major repair?

 

Your advice would be greatly appreciated.

 

Best regards

 

RIAAN STOLTZ

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