GRAVHD can be used to identify the rating for components rated to sustain a nominal fluid head. This value can be used in the PJS and in the data tables.
OTHER can be used to identify a non standard rating value.
NONE can be used to identify the rating for components whose ends would normally require the attribute rating as part of the table name, but for which a rating does not apply.
This value can be used in the PJS and in the data tables.
10. gcp_sch_thk, character(8)
This attribute identifies the schedule thickness value for the green connect point. This parameter exist as alphanumeric data. (Refer to Wall Thickness and Branch Reinforcement Equations (on page 152) for more information on this attribute.) In order of preference, schedule, and thickness are expressed in terms of:
A generic schedule such as S-STD, S-XS, and S-XXS. If a schedule name exceeds the provided field length (for example, S-SDR13.5), it is defined in terms of its wall thickness.
A specific schedule such as S-40, S-40S, and S-80.
NREQD is used in cases where all of the following conditions apply:
The thickness value is not required in purchasing the component.
Empty weights are not significantly affected by actual thickness values.
Either stress analysis is not applicable, or, if applicable, the component is to be considered infinitely rigid in stress analysis calculations.
A value with all numeric characters is interpreted as a wall thickness value in the same physical units as nominal piping diameter. To insure compatibility between the PJS, data tables, and wall thickness calculations, thickness is expressed in the form:
.xxxx if the thickness is less than 1 inch x if the thickness is an even inch x.xxx if the thickness is 1 inch or larger
Trailing zeroes are not included. Decimal points are not included for numbers without decimals.
An asterisk (*) followed by a name (of the form Cyyy) defines the specific calculation or table lookup to be used for wall thickness. Refer to Wall Thickness and Branch Reinforcement Equations (on page 152) for a more detailed description of the naming conventions for these calculations.
MATCH indicates the need to match the thickness of a component to that of the pipe of the same diameter and of option 1.
11. gcp_table_suffix, short, SN 576
This code-listed attribute is used to further reference the source of the generic dimensional data, such as flange data or piping outside diameter data. This attribute is also referred to as the table suffix.
For AMS standards, it represents the table suffix for the green connect point.
For DIN standards, it represents the piping outside diameter selection flag (reihe number) for pipes and fittings.
12. rcp_from_nom_diam, short 13. rcp_to_nom_diam, short
These coded attributes identify the range of nominal piping diameters (lower bound to higher bound) for the red connect point (second size). The to value must equal or exceed the from value. These values are not necessarily the same as the range in Tables 211 and 212.
52 Plant Design System (PDS) Reference Data Manager (PD_Data)
For a full size component, you should set these parameters to - (hyphen). In cases such as a concentric reducer or weldolet, this value must be less than the corresponding green value.This attribute is used to further reference the dimensional data for a specific component.
For AMS standards, it represents the table suffix for the red connect point.
For DIN standards, it represents the built-in length selection flag (or reihe number) for valves and wall thickness selection flag for pipes and fittings.
A parametric definition is used when connection graphics are required in the model and orthographic drawings.
18. commodity_code, character(16)
The commodity code is a user-assigned code that together with the NPD and
schedule/thickness uniquely defines the component. It defines the customer's commodity code (or part number). This attribute is the index into the Material Data Tables and the Material Description Library. The commodity code can be defined in one of three ways:
Commodity codes with neither an * or a + prefix, indicate a commodity item that has no associated implied components.
Commodity codes prefixed by an *, indicate a commodity item (primary component) which has one associated implied component (such as a lap joint flange and stub end). For more information on defining * implied items, refer to the PD_Report User's Guide.
It is not recommended that specification implied (*) items be generated by size change components (that is, reducers, reducing flanges, and so forth) as the NPD assigned by the system for the implied component can be either the larger or smaller (green or red) NPD of the implying item based on how the system traces the line.
Commodity codes prefixed by a +, indicate a commodity item (primary component) which has one or more associated implied components as defined in Table 212.
The default length for a commodity code is 16 characters, but you can modify this length if needed. This value is specified in two files: design.ddl and reference.ddl. To customize the character length, modify the design.ddl file as follows:
In table 34 (Piping Component Data), modify the value in column 8.
In table 50 (Piping/Tubing Data), modify the value in column 12.
Modify the reference.ddl file as follows:
In table 202 (Piping Commodity Specification Data), modify the value in column 18.
In table 211 (Piping Commodity Size-Dependent Material Data), modify the values in column 2 and column 7.
In table 212 (Piping Commodity Implies Material Data), modify the values in column 2 and column 7.
When you modify these values, set the character limit to be one more than the number of characters you actually want in the commodity code. This is necessary for
Plant Design System (PDS) Reference Data Manager (PD_Data) 53
you to add a * or + prefix if needed. For example, to create a 20-character commodity code, set the specified values to 21.You must make these modifications before the project is created.
For valves, the commodity code also defines the name of the dry weight table (required for stress analysis). For large diameter valves (25"+), it is used to build the name of the operator dimension table.
19. model_code, character(6)
This attribute identifies the specific item name for generic bends, spec flanges, or spec valves.
Each model code is classified by:
The model code includes the definition of the graphic representation of the component in the piping model. Depending upon the circumstances:
One or more model codes can be assigned to a single Item Name (for example, GAT, GATR, and GATF are all used for 6Q1C01).
The same model code can be assigned to different Item Names.
For gaskets, this attribute can be used to prioritize gasket entries in the Piping Materials Class. The priority is set with a numeric value (integer or decimal) greater than zero.
Non-numeric values are ignored by MTO and not considered to be a priority selection. The smaller the value the higher the priority. A value of 999999 is interpreted as an undefined priority.
20. PDS_sort_code, character(6)
This field can be used to specify the length (in subunits) for Purchased length pipe, or to specify the gasket diameter for gaskets. The gasket diameter table is used if the pds_sort_code for the gasket spec entry is set to _GKT. The system uses the NPD to determine the gasket inside and outside diameters.
If the pds_sort_code for the gasket spec entry is set to "_GKT", the gasket outside and inside diameters are generated using the table gasket_commodity_code_GKT.TBL.
If the pds_sort_code for the gasket spec entry is not "_GKT", the gasket outside diameter is equivalent to the NPD of the rated component and the gasket inside diameter is undefined.
21. modifier, double
This attribute is used for pipe bends, elbows, miters, and valves. It has various uses depending on the type of commodity item as defined below.
For pipe bends, it defines the bend radius of the pipe in terms of the numeric factor by which the nominal diameter of the pipe is to be multiplied to obtain the bend radius.
You can provide additional bend data for pipe bends in the Commodity Options section of the Place Component command. If you specify a commodity option code with a value between 4001 and 4010 in the Reference Database, you can specify the bend radius and lengths of the straight pipes in the dialog box that displays. You can also specify the bend radius as a length in sub-units or a function of the nominal piping diameter.
The Piping Eden module that supports this option uses the length of the straight section located at connect point 1 as Dimension_1 and the length of the straight section located
54 Plant Design System (PDS) Reference Data Manager (PD_Data)
at connect point 2 as Dimension_2. You can also specify that these two lengths are the same.The default data displayed in the dialog box contains the following values:
The pipe bend radius is computed from the default modifier value in the Piping Commodity Data for the selected pipe bend, active nominal piping diameter, model system of units, and NPD system of units.
The length of the straight section at end 1 is zero by default.
The length of the straight section at end 2 is zero by default.
When this option is used for placement of a pipe bend, the lengths of the straight section are loaded into the Piping Design Database as dimension_a for end 1 and dimension_b for end 2. This data is saved for reconstruction.
For pipe, it defines the joint quality factor (E) times 100 to be used during branch reinforcement calculations in those cases where the wall thickness is not calculated.
For orifice flanges and drip ring tees, it defines the number of taps to be provided. A value of 1 defines a single tap. A value of 2 defines 2 taps, 180 degrees apart. A value of negative 2 (-2) defines 2 taps, 90 degrees apart.
For nippolets and nipples, it defines the length of the component.
For reinforcing pads and welds, it defines whether data about the component is to be derived from tables in the system (0) or from the user by prompting (1).
For gaskets, it defines the gasket thickness to be used in procuring the gasket. This is the actual gasket thickness for MTO reports - not the compressed gasket thickness (gasket separation), which is derived from the Piping Materials Class data.
For bolts, it defines whether the bolt is a stud bolt (0 or positive), or machine bolt
(negative). The absolute value of this modifier, which ranges from 0 to 5, determines the applicable bolt extension.
For valves, it represents the code list number from CL550 (operator/actuator type) which defines the symbol description and the source of the physical data for the valve operator.
If this value is a negative number (such as -3), the operator is not displayed when placing the component.
22. geometric_standard, short, SN 575
This code-listed attribute identifies the source of the data (which is usually an industry standard, such as ANSI, ISO, or DIN, or a company standard) from which the specific geometry of the commodity item can be deduced. This parameter represents the vendor or industry standard, and the material if either affects the dimensions of the commodity item.
Code list numbers 2-6999 are reserved for geometry standards that apply to US piping practices. Numbers 7000-27999 are reserved for geometry standards that apply to European piping practices. Numbers 28000-31999 are reserved for specific company practices.
23. weight_code, short, SN 578
This code-listed attribute defines the weight code for the component. It determines the table to be used in finding the dry weight of the component. It is required for those cases where material causes the dry weight data but not the dimensional data to differ for a specific geometric industry standard.
24. fabrication_cat, short, SN 180
This code-listed attribute identifies the shop/field fabrication and purchase status of a component. It defines how the component was supplied and how the component was fabricated (for example, Shop Supplied, Field Fabricated).
25. materials_grade, short, SN 145