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  1. TexasChris11

    RT-1 and 100% and UW-11(a)

    Is UT a better NDE procedure for nozzles less than 10 inches, if the vessel is called out to be 100% RT, instead of RT-1.
  2. TexasChris11

    RT-1 and 100% and UW-11(a)

    I have looked ad UW-11(a), and it is my understanding that an vessel requiring Full Radiography (RT-1) has all the but welds radiographed; except for categories B, C in nozzles less than NPS 10. My question is.. Why does RT-1 Code exempt these nozzles?

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