The purpose of the paper is to provide some experimental results for the limit pressure of a vessel-nozzle intersection under internal pressure with a large pad-reinforced opening (d/D = 0.526). It is expected that the data obtained from the burst test will serve as the basis for the development of more accurate design guidelines for this type of reinforced intersection. A comparison of the limit and burst pressures with and without pad reinforcement is also carried out. The present test results indicate that pad reinforcement yields an effective improvement of the limit and burst pressures of a vessel.

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