PCC pipe class edit window

Purpose

The dialog is used to edit the data and settings of a pipe class. The pipeclass data edit window is opened by selecting in the program menu the item 'PCC' and then item 'Pipe Class Edit'. 

Description

In this dialog, several data and settings of a pipe class can be set. The dialog contains several tabs with data and settings for several types that will be explained.

The first tab is the tab General to enter general data to describe the pipe class.

Figure: pipe class general

The following data fields are available:

• 'Project', the name or number to identify the project. Here, this number is read-only and can not be changed. For further information see PCC project edit window.
• 'Pipe Class', the name or number to identify the pipe class. The number is shown in various reports.
• 'Engineer', the author or owner of the pipe class.
• 'Document nr.', the documentation name or number to identify the pipe class.
• 'Revision', the revision or issue of the pipe class.
• 'Process Services', is an indication of the process services or media for which this pipe class is applicable. It is good practice to list the process most critical substances in relation with the corrosion, toxic, flammable and explosive aspects of the process medium.
• 'Weld Material Group', the welding group according ISO 15608 for all materials. The materials must be similar to be welded.
• 'Flange Rating', the rating or class to classify the strength of the selected flanges.
• 'Corrosion', the default corrosion allowance in millimetres or percentage. The corrosion concerns the under allowance at the inside of each component. This default value can be overwritten for individual components. This default value is also used in the PCC schedule wizard window.  To change the unit of measurement see PCC unit selection window.
• 'Welding Standard', the used standard for welding.
• 'Material Certificate', the document type that certifies the chemical, mechanical and physical properties of a material.
• 'Tolerance', the default value for the tolerance allowance. This default value is also used in the PCC schedule wizard window. To change the unit of measurement see PCC unit selection window.
• 'Internal notes', a list of general notes that are not directly related to other specific notes.
• 'Note list', a list of notes for the pipe class.
• 'Approved by', the name of person(s) that approve the pipe class.
• 'Date', the date of last modification.
• 'Note list', a list of notes for the process services.
• 'Note list', a list of notes for the weld material group.
• 'Note list', a list of notes for the flange rating.
• 'Note list', a list of notes for the welding standard.
• 'Note list', a list of notes for the material certificate.

The second tab is the Calculation tab with calculation options. The options determine the results of the calculations.

Figure: pipe class calculation

The following data fields are available:

• 'Calculation Code', the current code for the pipeclass. For all available calculation codes see PCC Calculation List.
• 'Life Time', the amount of hours of life for the components in the pipeclass.
• 'Creep Monitoring', an option if monitoring of creep is required. The default value for this option is unchecked.
• 'ASME B31.X fitting without specific rating', an option that determines the calculation of B31.1/3/4/8/12. When this option is unchecked, all fittings are calculated as a pipe. When this option is checked, all fittings are calculated with the rules from the code. The default value for this option is checked for ASME B31.X codes, otherwise unchecked.
• 'ASME B31.12 Piping is transport pipe line instead of process plant pipe line', an option to determine the type of pipe line for ASME B31.12. The default value for this option is unchecked.
• 'ASME B31.4 Stress Reduction Factor', a value to reduce the strength of all components. The allowable stress will be reduced by this value for security reasons depending on the location. There are several location classes to classify the security level. 
• 'ASME B31.8 Location Class', a parameter to determine the stress reduction factor. There are several location classes to classify the security level. 
• 'ASME B31.8 Facility', a parameter to determine the stress reduction factor. There are several facilities to classify the application purpose of the pipe class.
• 'ASME B31.8 Test Medium', the medium that is used for testing all components. There are several media for selection.
• 'EN 1594 Pipe Line Situation', a parameter to classify the pipe line. There are several situations. 
• 'EN 1594 fo', a user defined stress design factor. The default and maximum value is 0.72. The user can enter a lower value for a higher security level.
• 'NEN 3650 / RToD 0.5 Rm or 0.44 Rm', an option to calculate the allowable stress according NEN 3650 or RToD. In these Dutch calculation codes, a higher allowable stress may be calculated. The default value is unchecked.

The third tab is the PT rating tab to enter PT rating data. The ratings are chosen from a flange standard or are custom made.

Figure: pipe class PT ratings

The following data fields are available:

• 'Flange Rating Standard', the used standard for the flange ratings. There are several available flange standards.
• 'Flange Rating', the rating (class) to classify the strength of the selected flanges. All ratings are available from the selected flange standard. For the default value see tab General.
• 'Flange Material Group', the material group for the flanges. This is a group of materials that have the same strength.
• 'Test Pressure Mode', the mode for determining the test pressure.
• 'Temperature Limit', the highest occuring design temperature in the pipe class. This temperature limits the PT ratings to that value.
• 'Percent of allowable stress', ?. The percentage ranges from 100 to 0.
• 'Import to temperature limit', an option to import all PT ratings from the selected flange standard, flange rating and flange material group limited by the selected temperature. When unchecked, all PT Ratings will be imported determined by the selected flange standard, flange rating and flange material group. Press the button to execute.
• 'Note list', a list of notes for the PT ratings.
• 'Table', the list of PT ratings with pressures and temperatures based on a flange standard or custom made.

The fourth tab is the Settings tab to enter several settings for defaults for the component types. The data determine the geometry of the components and the calculation results. 

Figure: pipe class settings

The following data fields are available:

• 'Pipe Joint Efficiency', the default value for the weld joint factor of pipes. The value ranges from 1 to 0.
• 'Bend/Elbow Efficiency', the default value for the weld joint factor of bends and elbows. The value ranges from 1 to 0.
• 'Bend Radius Factor', a default multiplication factor to set the bend radius (neutral line) for bended pipe based on the outside diameter. The default value of the factor is based on ASME B16.9 Elbows type 3D with R ~ 3 D.
• 'Bend Wall Thickness Mode', the mode to set the thickness for the intrados and extrados of a elbow or bend when they are undefined. The options are Uniform and Proportional. The mode Uniform is the default. For mode Uniform the intrados and extrados are equal to the thickness of the neutral line. For mode Proportional the intrados becomes larger and the extrados smaller, based on the curved geometry. The mode is only used when the selected dimension standard does not provide all thicknesses like ASME B16.9.
• 'Miter Bend Segments', the default amount of miter pipe segments.
• 'Miter Bend Radius', a default multiplication factor to set the bend radius (neutral line) for mitered pipes based on the outside diameter. The default value is based on ASME B16.9 Elbows type 3D with R ~ 3 D.
• 'Reducer Cone Length', a default multiplication factor to set the cone length based on the total reducer length. The value ranges from 1 to 0. The default value of 0.8 (80%) is an average value.
• 'Reducer Joint Efficiency', the default value for the weld joint factor of reducers. The value ranges from 1 to 0.
• 'Bell Shaped Reducer', an option to make all reducers bell shaped or straight by default. When bell shaped, the reducer has a knuckle radius for the large and small end. When straight, the knuckle radii are zero. The default value is checked. The knuckle radii are provided by a dimension standard or estimated by the program.
• 'Tee Crotch Factor', a default factor to set the wall thickness at the crotch when it is undefined like ASME B16.9. Refer to the formula in the window how the crotch thickness is calculated. The default value is 1.25.
• 'Tee Radius Factor ', a default factor to set the outside radius of the tee in the crotch when it is undefined. The radius is not defined in many dimension standards like ASME B16.9 and is usually defined by the customers who purchase the tees. The default value is 0.67.
• 'Tee Joint Efficiency', the default value for the weld joint factor of tees. The value ranges from 1 to 0.
• 'Cap Joint Efficiency', the default value for the weld joint factor of caps. The value ranges from 1 to 0.
• 'Cap Cold Formed', a option only used in certain calculation codes that increases the strength of a cap. When checked, the cap is made from cold formed material. The default value is checked.
• 'Stubon Weld Area', an option if the weld area must be included in the reinforcement area of a stubon or welded outlet. The default value is checked.
• 'Machine Bolt Length Factor', a default multiplication factor to set the bolt length. This factor does not have any implication in the calculation and is only use to determine the length of the bolts in case of a fitting assembly, for example an orifice plate between gaskets and flanges.
• 'Stud Bolt length Factor', a default multiplication factor to set the stud bolt length. This factor does not have any implication in the calculation and is only use to determine the length of the bolts in case of a fitting assembly, for example an orifice plate between gaskets and flanges.

The fifth tab is the Standards tab to enter default materials and default dimensions standards for the components. Each new component created will get the default material and dimension standard. 

Figure: pipe class standards

The following data fields are available:

• 'Material Class', the class of material used when selecting a material for a component. It acts as a filter to narrow the available amount of selectable materials. This filter is also used for selection of default materials for each component type in this window. For further information see PCC material selection window.
• 'Select Material Group ...', button to select default material standards from organised material groups. For further information see PCC material group selection window.
• 'Select Dimension Group', button to select default dimension standards from organised dimension groups. For further information see PCC dimension group selection window.
• 'Default Material Standard', the material standard used for each newly created component. Use the buttons to add or remove a material standard. This works the same for each component type. For further information see PCC material selection window.
• 'Default Seam Type', the seam type for each new created component when applicable. The selected material standard defines one or more seam types and will preselect the seam type. The seam type determines the maximum joint efficiency in many material standards.
• 'Default Dimension Standard', the dimension standard used for each new created component. Use the buttons to add or remove a dimension standard. This works the same for each component type. For further information see PCC dimension selection window.
• 'Default Subtype', the subtype used for each newly created component when applicable. The selected dimension standard will determine the available subtypes and will preselect the most used subtype.

The sixth tab is the Sizes tab to enter all the nominal pipe sizes used in the pipe class. You can only select components with these selected sizes.

Figure: pipe class sizes

The following data fields are available:

• 'Standard', the pipe standard to provide the available nominal pipe or line sizes. 
• 'Note List', a list of notes for the pipe sizes.
• 'Available Line Sizes', a list of line sizes provided by the selected pipe standard.
• '>>', a button to move one or more selected available line sizes to the selection list.
• '<<', a button to remove one or more selected sizes from the selection list to the available list.
• 'Custom >', a button to create a custom size in the selection list.
• 'Default >', a button to create a list of line sizes that are mostly used for many pipe classes.
• 'Selected Line Sizes', a list of line sizes selected or created to be used in the pipe class.

The last tab is the Description tab to enter default descriptions for each component type. These descriptions are attached to each new component.

Figure: pipe class descriptions

The following data fields are available:

• 'Default component descriptions', a default description per component with extra information. This works the same for each component type.

The buttons at the bottom are:

• 'Help' button, to show this help page
• 'OK' button, to open the project and close this dialog.
• 'Cancel' button, to close the dialog without saving the data.