Flange Insulation Exclusion Data (232) - PDS - Reference Data

Plant Design System (PDS) Reference Data Manager (PD_Data)

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Reference Data

The Flange Insulation Exclusion Data provides for partial exclusion of flange insulation thickness from the generation of interference envelopes. This is an optional data table; if no data is defined for this table, the Piping Envelope builder will continue to function as it has in previous releases of PDS.

The Piping Envelope Builder searches for matching data in this table for each bolted end of each piping component or instrument component on an insulated line that are determined to be insulated. The system only searches for components that passed the component insulation exclusion test, as described in Component Insulation Exclusion Data (231).

The Piping Envelope Builder searches for matching data on the basis of the following data to determine whether or not insulation should be excluded from the flange outside diameter of that bolted end of the component.

  • nominal piping diameter of the bolted end (range search)

  • heat tracing requirements (range search)

  • insulation purpose (range search)

  • normal operating temperature (range search)

If matching criteria is found in the exclusion table for these conditions, the applicable insulation thickness will not be added to the flange outside diameter of the bolted end of that component's interference envelope. Otherwise, the insulation thickness will be included in the component's interference envelope.

The piping segment data (heat tracing requirements, insulation purpose, and normal operating temperature) are determined on the basis of the piping segment associated with the first connect point of the applicable component.

The Piping Eden modules for the interference envelopes that are to consider the partial exclusion of insulation from the flange outside diameter of a bolted end must be revised to accommodate this option. If you do not change any or all of the Piping Eden modules for the interference envelopes, this table will have no impact and the interference envelopes will include complete insulation, when applicable.

For example, the required modification to the interference parametric for the weldneck flange (FWN) is as follows:

!FLANGE - Interference Module
Interference_Parametric_Shape_Definition 'F1A'

Call Define_Connect_Point_Geometry ( LINEAR )

Thickness_1 = Thickness_1 + CP_Offset_1
Thickness_2 = Thickness_2 + CP_Offset_2
!Original Line
! Facing_OD_1 = Facing_OD_1 + Insulation * 2
!Modified Line
Facing_OD_1 = Facing_OD_1 + Insulation_1 * 2
Facing_OD_2 = Facing_OD_2 + Insulation * 2

Call Draw_Cylinder ( Thickness_1, Facing_OD_1 )
Call Draw_Cylinder ( Thickness_2, Facing_OD_2 )

RETURN
END

The Flange Insulation Exclusion Data table has 9 attributes.

  1. system_unique_no, integer

  2. bolted_npd_from, short

  3. bolted_npd_to, short

    These coded attributes identify the range of nominal piping diameters (lower bound to higher bound) for the bolted end of the component or instrument in NPD units.

  4. heat_tracing_from, short, SN 200

  5. heat_tracing_to, short, SN 200

    These code-listed attributes identify the range of heat tracing values (lower bound to higher bound) using values from code list set 200, Heat Tracing Requirements.

    A dash (-) can be used for the from value to indicate that heat tracing requirements are not to be considered as part of the discrimination process.

  6. insul_purpose_from, short, SN 220

  7. insul_purpose_to, short, SN 220

    These code-listed attributes identify the range of insulation purpose values (lower bound to higher bound) using values from Standard Note type 220, Insulation Purpose.

    A dash (-) can be used for the from value to indicate that insulation purpose is not to be considered as part of the discrimination process.

  8. nor_oper_temp_from, double

  9. nor_oper_temp_to, double

    These attributes identify the range of temperature values (lower bound to higher bound) for the bolted end of the component or instrument.

    A dash (-) can be used for the from value to indicate that temperature is not to be considered as part of the discrimination process.

    The system of units for the temperature range is the same as the system of units for the maximum temperature in the Piping Commodity Specification Data Table. Note that normal design temperature, alternate operating temperature, and alternate design temperature are not considered.

Neutral File Format

! DEFINE FLANGE INSULATION EXCLUSION DATA

Single_Spacing
Sequence= 2 3 4 5 6 7 8 9

4 12 3 3 5 5 150 200
4 12 3 3 5 5 150 200
4 12 3 3 5 5 150 200