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Conversion to native Windows application
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Incorporation of HTML help system
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On-line documentation
API-650 Changes:
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The material database has been updated to reflect the changes to Table 3-2. This involved removing both A442 materials.
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Appendix F no longer forces a redesign utilizing Appendix A.
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Appendix I changed the equation for the maximum deflection by raising a term in the denominator to the 3rd power.
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Section 3.4.2 has been incorporated, which insures that the bottom plate diameter is at least D + 2 inches.
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A modification has been made to the implementation of Section 3.5.2, to include the bottom shell course thickness.
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Allowances have been made to enable metric jobs to utilize 6 mm plate as the minimum thickness instead of 0.25 inch plate.
API-653 Changes:
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The equations for determining the allowable stress have been modified as per the recent addendum.
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Incorporated a recent Code Interpretation stating that the Appendix M reduction factor should be applied to both terms in the allowable stress determination.
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Modified the basic thickness equation in accordance with the recent addendum (it no longer subtracts 1 foot from the fluid height).
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Incorporated the new computations for the allowed hydrotest height.
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Modified the allowed settlement measurement points from 30 ft to 32 ft around the circumference, in accordance with the recent addendum.