Piping Commodity Data

The following shows the delivered commodity item data as defined in 1c0031.pcd.

The active segment parameters define the data that will be used to place the component.

Continuing with our example, we will use the information for a 6 inch gate valve.

4. Component Placement How PDS Works

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Item Name and Model Code

When you select the Gate option from the Place Component form, the system sets the Item Name to 6Q1C01. This is the item name for a gate valve in the delivered reference data. The

corresponding Model Code for this Item Name is GAT.

The item name is also called the AABBCC code because it is composed of a number of parameters.

For example, the code 6Q1C01 breaks down as follows

AA 6Q Piping In-Line Component

BB 1C Valves

CC 01 Gate Valve

Option Code

The option code is a code-listed value that tells the system to retrieve the primary commodity item, a secondary commodity item, or another special option from the Piping Commodity Data.

This parameter allows you to select from predefined options at placement. If no option is specified, the system defaults to option 1 (primary commodity item). Option 2 is reserved as the secondary commodity item. The other options are determined by values for Code List Set 400.

Green and Red Connect Point Data

Since a standard gate valve has the same properties at both ends (connect points) only green connect point data is required.

! AABBCC Green CP

-! Code Opt From To Prp Rating Sc/Th TS 6Q1C01 1 3 12 21 CL150 NREQD 5

The From To values define the range of NPD values supported by this definition in this example 3" to 12".

The End Preparation (Prp) is a code-listed attribute that identifies the end preparation for the connect point. The system determines the termination type based on the range of values

2 - 199 bolted terminations 300 - 399 male terminations 400 - 599 female terminations

Using the values defined in Code List Set 330, the setting 21 indicates RFFE (Raised-Face Flanged End).

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The Rating identifies the pressure rating for the connect point. The setting CL150 refers to ANSI pressure rating CL150. The system interprets the first set of sequential numeric characters as the pressure rating value (150 in this example).

The Schedule Thickness (Sc/Th) exists as alphanumeric data. The value 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.

The Table Suffix (TS) is a code-listed attribute (CL576) used to further reference the source of the generic dimensional data, such as flange data or piping outside diameter data.

For AMS standards, it represents the table suffix for the green connect point. The value 5 is the default for US practice. It represents the basis on which most US-practice generic piping tables for dimensional parameters is defined.

End Termination Type Basis for Table Values

Raised-face flanged...ANSI-B16.1, B16.5, API-605 or MSS-SP-42, in this order of precedence

Commodity Code

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 Description Library.

Using the delivered reference data, the commodity code VAABAHCCAA represents V - Valve

A - Gate Valve A - CL150

B - Raised Face Flanged Ends A - Carbon Steel

H - Trim 8 CC - Crane 47 AA - Blank

For valves, the commodity code also defines the name of the dry weight table (required for stress analysis). Refer to Appendix E in the PDS Piping Component Data Reference Guide for a listing of the delivered commodity codes.

4. Component Placement How PDS Works

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Geometric Industry Standard

This code-listed attribute (CL575) 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.

The value 40 indicates

40 = ANSI-B16.10 [Dimensions of Ferrous Valves ||]

Modifier

This attribute has various uses depending on the type of commodity item. For a valve, it represents the code list number from CL550 (operator/actuator type) which defines the symbol description and the source of the physical data. If this value is a negative number (such as -3) the operator is not displayed when placing the component.

Reviewing CL550, the value 3 indicates a handwheel operator.

Materials Grade

This code-listed attribute (CL145) identifies the material code, specification, grade-temper, and joint efficiency for the component. This data is used in wall thickness calculations. It can also be used to access physical data in the Graphic Commodity Library.

Reviewing CL145, the value 252 indicates A216-WCB.

Weight code

This code-listed attribute (CL578) 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.

Reviewing CL578, the value 52 indicates

52 = 490 pcf [Carbon steel, low Cr alloy steel, stainless steel]

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Fabrication Category

This code-listed attribute (CL180) identifies the shop/field fabrication and purchase status of a component. It defines how the component was supplied and how the component was fabricated.

The value 7 indicates Contractor supplied, field fabricated (CSFF).