Input variables
Generic variables
These variables can be found in virtually all reports as input variables
- Design Pressure – Pc
- Pressure assumed to be present in the component according to the design terms
- Design Temperature – T
- Temperature assumed to be present in the component according to the design terms
- Material
- Name of selected material used for the construction of the component
Specific variables
These variables are component specific
- Outside Diameter – Do
- Outside diameter of the attached part. The diameter runs from the outside of the wall to the opposite outside of the wall, through the center of the circle.
- Nominal Thickness – en
- Thickness ‘as is’, meaning it is the design thickness taking into account corrosion and tolerance.
- Corrosion – c0
- Amount of thickness that accounts for the possible effects of corrosions.
- Tolerance – c1
- Tolerance in thickness for production
- Joint coefficient – z
- Effectiveness of the strength, depending on whether joints are seamless, welded, or expected to perform worse than the base material properties
Hemispherical Cap
Calculated Values
- Allowable Stress at Temperature – f
- Stress in the component at which it is still allowed (without failure) to use the component
- Allowable stress at 20 °C – ft
- Stress in the component at which it is still allowed (without failure) to use the component at testing condition
- Inside Diameter – Di
- Outside Diameter − 2 × Thickness
- Nominal Required Thickness – esrn
- Based on the input, this is the calculated thickness that is required to sustain the loads. The nominal value should be smaller than the nominal design thickness.
- Maximum Allowable Working Pressure – MAWP
- The maximum pressure at which the component can be used in operation. This value should be larger than the design pressure.
- Design margin – Pc/MAWP
- Ratio of the design pressure to MAWP
- Maximum Allowable Test Pressure – MATP
- The maximum pressure at which the component should be tested and survive.
Errors
- Can’t find material ‘MaterialName’ in database
- Material could not be found in database. Select an existing material name, or select another material via the material selection window.
- Insufficient dish thickness.
- Wall thickness is insufficient to bear the applied loads. Increase the wall thickness.