Dear Riaan Stolz: please see, API 653 Four Edition, April 2009, Section 3, Definitions, Numeral 3.18, c. removing and replacing or adding a shell plate beneath the design liquid level where the lonest dimentio of the replacement plate 12 in.
if you can not like to do a hidrostatic test please see Numeral 12.3.2 When hydrostatic testing is not requiered.
Regards,
jml, Colombia, South America
2012/9/11 Riaan Stoltz <Riaan@ritc.co.za>
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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
RITC INSPECTION
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