All inputs that appear in this input section are required unless otherwise specified.

Assessment Level

Select the assessment Level.

Assessment Parameter

Select whether to use thickness (tmin) or pressure/fill height (MAWP/MFH) as the basis for the assessment. This selection determines the acceptance criteria to be used in the assessment per API 579 Part 4 Tables 4.4 – 4.7. Additional inputs will be required to calculate the MAWP/MFH and tmin for Level 2 assessments or if the MAWP/MFH option is selected for Level 1 assessments (See MAWP/MFH Calculator). If Thickness Basis is selected for a Level 1 assessment the user is responsible for determining the minimum required thickness.

Future Corrosion Allowance Local to Metal Loss, FCAml

Enter the allowable future corrosion in the component in the area of localized thinning.

Component Geometry

Select geometry based on the type and shape of the component.

Component Minimum Required Thickness, tmin

Enter the minimum required thickness for the component per the requirements of the original code of construction.

Nominal Thickness, tnom

Enter the original component thickness in requested units.

Allowable Remaining Strength Factor, RSFa

Enter the allowable remaining strength factor for the component. The recommended value for RSFa per API-579 Part 2 paragraph 2.4.2.2.d is 0.9. Refer to API-579 Annex 2F for guidance on establishing alternative values for RSFa.

Next

Click to proceed to the Data Input Screen