Questions regarding the hydrostatic test pressure in GB/T16508-2013?
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Clause 6.7.2 of GB/T16508.1-2013 states that the hydrostatic test pressure must now be calculated, and then compared with the values in the table, with the higher value being selected. When performing the calculations, how are the 2 temperatures (the test temperature of the component material and the design temperature of the material) determined? ? I have chosen 20°C as the testing temperature for the material, and the design temperature for the material is the wall temperature used in the strength calculations for the component. I’m not sure if this is correct I’ve seen that in some cases, the design temperature for the materials is set at the rated temperature of the boiler (for example, for a DZL boiler with a pressure of 1.25 Mpa, the temperature of 193.3°C is used)
This part was determined by those working on containers; personally, I feel that this is in conflict with the regulations, as GB/T16507 does not mention anything of this kind.