Hi to everyone,

The contractor have the fabrication nearly ready of the diesel tanks in accordance API 650, with a fixed roof at the top of the tank shell, completing the fillet weld to reinforcement plates to the nozzles and the manholes (shell and the roof)

I need your opinion with regard to the paragraph 7.3.5 (API 650 Code), with pneumatic pressure test to the reinforcement plates, it's only to the tank shell or to the reinforcement plate on each opening (roof and shell).

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7.3.5 Inspection of Reinforcing-Plate Welds
After fabrication is completed but before the tank is filled with test water, the reinforcing plates shall be tested by the Manufacturer by applying up to 100 kPa (15 lbf/in.2) gauge pneumatic pressure between the tank shell and the reinforcement plate on each opening using the telltale hole specified in 5.7.5.1. While each space is subjected to such pressure, a soap film, linseed oil, or another material suitable for the detection of leaks shall be applied to all attachment welding around the reinforcement, both inside and outside the tank.
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Thanks for your support

Regards

Hughes