ASME Section VIII Division 2-Elastic Nozzle Simplified Analysis pre-2007 - CAESAR II - Help

CAESAR II Users Guide

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CAESAR II
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CAESAR II Version
13
  1. Perform a CAESAR II analysis of the piping loads on the vessel/nozzle junction. Use WRC 297 flexibilities to compute loads more accurately, but less conservatively or do two analyses, one with flexibilities and one without.

    From this analysis you should have sustained, operating, and expansion loads on the vessel/nozzle junction.

  2. Find Smh and Smc from the Sect. VIII allowable stress tables.

    SHARED Tip Smh is the vessel material hot allowable, and Smc is the vessel material cold allowable.

  3. Run WRC 107 with the sustained loads on the vessel/nozzle junction from CAESAR II, and verify that the computed stress intensities are < 0.5 Smh.

    SHARED Tip This operation helps in conservatively considering bending stresses from internal pressure and sustained moments and also lets you categorize the stresses and moment as a primary classification. If the operation fails, review the stresses in more detail.

  4. Run WRC 107 with the operating loads on the vessel/nozzle junction from CAESAR II, and verify that the computed stress intensities are < Smh + Smc.

  5. Run WRC 107 with the expansion loads on the vessel/nozzle junction from CAESAR II, and verify that the computed stress intensities are < Smh + Smc.

Should any of the checks described fail, then perform the more comprehensive analysis of the junction described earlier. For more information, see ASME Section VIII Division 2 - Elastic Analysis of Nozzle Comprehensive Analysis.