AVEVA E3D 2.1 Equipment Modelling Using Primitive -Chapter 3

CHAPTER 3 3

Equipment Modelling Using Primitives

This chapter explores a number of issues that designers should consider prior to commencing any equipment modelling and describes how equipment elements can be created with basic modelling methods using primitives.

3.1

Naming Equipment Elements

Conventionally, equipment items are named using the tag number, e.g. /E1101, /E1101, /P1001-A, /P1001-A, /D2016, /D2016, etc. However, any name or naming convention may be used. It is not usual to name primitives, except nozzles, unless they need to be identified for some purpose. Nozzles are named and generally prefixed by the equipment name to make them unique, e.g. / E1101N1, N1, /P1001-A/N1, /P1001-A/N1, /D2016/1. /D2016/1. Naming the nozzles also helps in identification when connecting pipework to them. Nozzle names will also be referenced on Piping Isometrics. Whatever names are given, the naming convention is usually defined by the project specification. It is possible that the project may have Autonaming rules set up for items such as nozzles so that the project conventions are followed in every detail.

3.2

Equipment Origin Position

The position of the equipment origin is a key consideration prior to commencing modelling. The point selected for an equipment origin is often dictated by other project information, such as known coordinates or adjoining structures and pipe elements. Understanding the position of the origin of equipment, sub-equipment and primitive elements will help designers model more effectively. Equipment elements, Sub-equipment elements and Primitive elements each have an origin. The origin position is held within each elements Position attribute. attribute. The EQUI element’s element’s Position Position attribute holds the equipment origin position. By default, the position is expressed in world co-ordinates, however the user can change this to other design elements if required. If SUBE elements SUBE elements are used, the Position attribute Position attribute defines the SUBE origin position with respect to the equipment origin (default). A solid solid primitive’ primitive’s Position Position attribute defines the position of the primitive ’s origin with respect to to its owner, i.e. the EQUI origin EQUI origin or the SUBE origin. SUBE origin. For all negative negative primitives, the Position Position attributes define the position of the negative primitive ’s origin with respect to its to its owning solid primitive ’s origin.

3.3

Primitives

The following primitives are available for equipment modelling in AVEVA E3D.

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AVEVA Everything3D™ Everything3D ™ (2.1) Equipment Modelling TM-1811

Box (BOX)

Cylinder (CYLI)

Cone (CONE)

Snout (SNOU)

Pyramid (PYRA)

Circular Torus (CTOR)

Rectangular Torus (RTOR)

Dish (DISH)

Sloped Cylinder (SLCY)

Extrusion (EXTR)

Solid of Revolution (REVO)

Nozzle (NOZZ)

Equipment elements consist of a collection of AVEVA E3D primitives, arranged in 3D space to represent the represent the real object. When a new piece of equipment is to be built, one of the first decisions to be made is which primitives are going to be used to create the representation required. Generally Generally the ‘internals’ of any equipment are not modelled as it only the external representation that is required. In this simple example of a horizontal vessel, seven primitives are positioned and orientated such that they represent a vessel. There is no ‘connectivity’ between the primitives.

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AVEVA Everything3D™ (2.1) Equipment Modelling TM-1811

3.3.1

P-points

Each primitive has a set of P-points at fixed locations. A P-point is a point that has a position and direction attribute as well as other attributes that are used by other modules and applications. P-points are numbered, with P0 always being at the origin of the primitive. For example, a BOX has 7 P-points: 

P0 is in the middle of the box.



P1 is in the centre of the top face of the box and points away from the face in a + ve Z direction.





P2, P3, P4 and P5 are located on the four vertical faces. Each located at the centre of and pointing away from its face. P6 is located in the centre of the bottom face of the box pointing away from the face in a - ve Z direction.

For equipment modelling, P-points are used for locating and aligning primitives.

 Appendix A contains a list of primitives showing selected attributes and P-points. 3.3.2

Negative Primitives

To obtain a desired shape or effect in the model, negative primitives may be used to ‘cut’ a solid primitive. Primitive Type

Element Type

Negative Box

NBOX

Negative Cylinder

NCYL

Negative Cone

NCON

Negative Snout

NSNO

Negative Pyramid

NPYR

Negative Circular Torus

NCTO

Negative Rectangular Torus

NRTO

Negative Dish

NDIS

Negative Sloped Cylinder

NSLC

Negative Extrusion

NXTR

Negative Solid of Revolution

NREV

Copyright © 2013. AVEVA Solutions Limited and its subsidiaries. All rights reserved.

Negative primitives are owned by solid primitives and will only negate their owner. The negation is controlled using the Holes Drawn checkbox on the Representation tab of the Graphics Settings form. All solid primitives, except Nozzles, have an equivalent negative primitive whose attributes are the same but the names are different, as shown in the table.

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3.4

Creating Equipment from Primitives – A Worked Example

This worked example builds a piece of process equipment, a Reboiler, tagged E1301, from the AVEVA Plant training project. The equipment locations for the project are shown on the following Equipment Location drawing below.


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3.4.1

Information and Decisions

The dimensions for Reboiler E1301 are shown on the Equipment Arrangement drawing below.

Before starting to model E1301, or any equipment item, key decisions need to be made: 1.

The location of the equipment origin. The equipment origin can be placed anywhere. It could be placed on the bottom of one of the saddles so that it may be located on a foundation, however, looking at the location information on the Equipment Location drawing, it would be easier to place the origin on the centreline of the equipment in line with nozzles NS1 and NS2. This would give an equipment origin position of W 319150 N 296950 U 101470.

2.

The orientation of the equipment. There is little point in modelling the equipment in one orientation and then re-orientating it when complete. From the Equipment Location end to the North, so this is the orientation that will be used for the primitives. The equipment will use the default orientation of Y is N and Z is Up.

3.

The primitives to be used. Looking at the Equipment Arrangement drawing for E1301 it may be broken down to the following primitives: 

6 x Cylinders



2 x Boxes



5 x Nozzles



1 x Dish

Total 14 Primitives


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3.4.2

Creating the EQUI Element Clear the Drawlist, if required. Make ZONE-EQUIPMENT-AREA01 the CE and on the EQUIPMENT tab, in the Create group, click the Equipment button to display the Equipment Creation form. In the Naming text box enter E1301. Change the East/West options list to West and enter 319150 into the textbox, Enter 296950 in the North textbox and 101470 in the Up textbox. Enter Reboiler in the Description textbox. All other attribute fields can be left unset at this point. Click the OK button to create the equipment element with the specified name and at the specified co-ordinates.

At this time nothing is displayed in the 3D View as the equipment does not own any primitives. Right click on the newly created element in Model Explorer and select Attributes… from the pop-up menu to display the Attributes form. Check the Position attribute. The Orientation is the default orientation, i.e. Y is N and Z is Up (X is East), as the Equipment Creation form does not allow an orientation to be specified. As this is the required orientation, the equipment does not need to be re-orientated. Close the Attributes form.


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3.4.3

Creating the Primitives

Although it is not important in which order the primitives are built, it makes sense to model the main ‘body’ of the Reboiler first, i.e. the longest cylinder (Cylinder 1). From this base most of the other primitives can be positioned. Before beginning to model the primitives for this equipment, it is important to consider your working plane. The cylinders modelled here will have their Z-axes’ as the North/South axis, thus we will use the UW plane. This may be selected from VIEW > Local Coordinate System > UW or by selecting the plane from the PowerCompassTM . We will remain in this plane for the entire worked example.

In the Create group of the EQUIPMENT tab, select the Cylinder option from the primitive gallery.

This will activate the Contextual Editor , which will guide the user though the creation stages.

The southern end of the cylinder is 290 – 60 = 230mm South of the equipment origin. We will use this as its base centre. Enter E 0 N -230 U 0 in to the co-ordinates boxes. After typing each co-ordinate press the Tab key to lock it and advance to the next co-ordinate. Once complete press the Return key to advance. From the Equipment Arrangement drawing, the length of this cylinder can be derived as 6590 – 60 – 60 = 6470mm and has a diameter of 835mm. Enter 835 in the Diameter textbox, followed by the Return key.


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Enter -6470 in the Height textbox followed by the Return key.

This will complete the cylinder creation. Right click and drag to Limits Extents.

11 O’clock on

the PowerWheel TM to set

The next primitive to be created is the flange on the southern end of the equipment ( Cylinder 2). On the Create Primitive form click Cylinder again to display the contextual editor. From the Equipment Arrangement drawing, the thickness of the flange is 60mm and the diameter is 960mm. With equipment E1301 as the CE, type CYLI into the 3D View.

Position the base centre of the new cylinder at P1 of the first cylinder. P-point snaps may be turned on by holding , right clicking and dragging to 12 O’clock on the snaps PowerWheel TM .


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Enter 60 in the Height input box and 960 in the Diameter input box.

3.4.3.1 Using Copy The next primitives to create are the second and third flanges ( Cylinder 3 and 4), just North of the equipment origin and at the north end of Cylinder 1 respectively. These primitives could be created, as described previously. However, they may also be created by copying the first flange cylinder. Double click the equipment, then double click Cylinder 2. Type CO into the 3D View. When asked to specify base point of displacement, pick P1 of Cylinder 2.

Then enter E 0 N 640 U 0 into the displacement coordinates.


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Then choose P2 of Cylinder 1 to copy to. Press the Return key to exit the copy command.

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Cylinder 5 may be created using a similar process to Cylinder 2. Pick P2 of Cylinder 4 as the base centre, enter 910 for the diameter and -300 for the height. Dish 1 is positioned at the north end of Cylinder 5. The Create a Dish button may be found in the second row of the Primitives Gallery. Pick P2 of Cylinder 5 for the base centre. Note: A preview will not be visible since it will be obscured by Cylinder 5, due to its default orientation.

Enter 910 for the diameter . When prompted for the dish height, press the down arrow and select Knuckle Radius, then input 75. Then input -200 for the height.

 See page 101 for more details regarding dish definition and knuckle radii.


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3.4.3.2 Creating Nozzles The Nozzle Schedule on the Equipment Arrangement drawing shows that Reboiler E1301 has five nozzles named NS1, NS2, N1, N2 and N3. For this example the nozzles will be 180prefixed using the equipment name and a forward slash, e.g. E1301/NS1. A Nozzle (NOZZ) primitive has its origin, P-point P0, at the face of the nozzle flange and is co-incident with P-point P1. P-point P2 is at the bottom of the ‘stem’ of the nozzle and the Height attribute is the distance between P1 and P2. When a nozzle is positioned it is the origin position ( P0) that is specified. A nozzle orientation may be specified by setting the direction of P1 or the origin may be rotated around another axis. It is customary to model the nozzle ‘stem’ back to the centreline of the vessel. The first nozzle to be created is NS2, a 100mm Nominal Bore, 150lb ANSI flange nozzle. The Equipment Arrangement drawings shows that the nozzle is located at the equipment origin in both the North/South direction and the East/West direction The face of the nozzle’s flange is 635mm above the equipment centreline. Make the EQUI element E1301 the CE and set the viewing direction to Iso . On the EQUIPMENT tab, in the Create group, click the Nozzle button to display the Create Nozzle form. Enter E1301/NS2 in the Name textbox. Enter 635 in the Height textbox. Select ANSI-Nozzles from the Specification options list. Select 150lb Ansi Flanges from the Generic Type options list. Select 100mm from the Bore options list. Enter 635 in the Height textbox to model the stem back to the centreline. Click the Create button to create the nozzle at the equipment origin and display the Modify Nozzle form.

 The entries in the Specification, Generic Type and Bore options list depend on the nozzle specifications in the catalogue. In the Position fold-up panel of the Modify Nozzle form, enter 635 in the Up textbox. With the Origin as the datum, rotate the nozzle 90° around the Y Axis using the Rotate fold-up panel. Click the Next button on the Modify Nozzle form to display the Create Primitive form. .


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3.4.3.3 Using Copy and Rotate Nozzle NS1 has the same specification and nominal bore as NS2 and is in the same location in the East/West and North/South axes, i.e. at the equipment origin. NS1 may be, therefore be created by rotating NS2 in copy mode. With nozzle NS2 as the Current selection, type RO into the 3D View. Press the down arrow and select Copy. Then pick P2 of NS2 as the base point of rotation. Rotate by 180.

The nozzle is given a system name, NOZZ Copy-of-NS2, as the Rotate + Copy mode did not offer an option to rename the copy elements. Right click on NOZZ Copy-of-NS2 in Model Explorer and select Rename from the Model Explorer popup menu to display the Name form. Enter E1301/NS1 in the Name textbox on the form, click the Apply button to rename the nozzle and then close the form. From the Equipment Arrangement drawing, nozzle N2 is a 200 NB 300lb Ansi Flange nozzle positioned 350 + 460 = 810mm North of nozzle NS2.


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With NS2 the current selection, type M into the 3D View to begin the move function. Press the down arrow and select Copy. Pick P2 of NS2 as the base point. Enter E 0 N 810 U 0 into the co-ordinates then press the Return key. Rename the nozzle to /E1301/N2 and make it the CE. On the EQUIPMENT tab, in the Modify group, click the Nozzle button to display the Modify Nozzle form

Select 300lb Ansi Flanges from the Generic Type options list and select 200mm from the Nominal Bore options list to re-size the nozzle. Click the Next button and dismiss the form. From the Equipment Arrangement drawing, nozzle N1 is 2440mm North of nozzle N2, rotated by 180º and has the same specification and nominal bore. Use the previous two techniques in sequence to Rotate and Move a copy of N2 180 degrees and offset by 2440 mm North. Re-name the new nozzle to E1301/N1

From the Equipment Arrangement drawing, the final nozzle, N3, is 2440 + 2440 = 4880mm North of nozzle N2 and is the same specification and nominal bore. Move with Copy the Nozzle N2 4880 North. The Reboiler body is now complete with all nozzles.


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3.4.3.4 Creating a Sub-Equipment (SUBE) element The two supports for the Reboiler may typically be modelled as a Sub-equipment. With the EQUI element E1301 as the CE, in the Create group, select Sub-Equipment from the Create Equipment button options list to display the Sub-Equipment form. Enter E1301_SUPPORTS in the Naming textbox. For the supports there is no reason to make the SUBE element origin different from the owning EQUI element origin. Leave the position as the default, i.e. the same as the owing element, and click the OK button and then close the form. The two supports are modelled as BOX primitives. From the Equipment Arrangement drawing, the supports are 200mm wide x 460mm long and the bottoms of the supports are 630mm below the centreline of the equipment.

With SUBE element E1301_SUPPORTS as the CE, select the Box primitive from the primitives gallery. Enter the first corner co-ordinates E 230 N 1520 U -630. Then specify the opposite corner coordinates E 460 N 0 U 630. Followed by 200 for the Z length.

The box primitive can now be copied to create the second support. From the Equipment Arrangement drawing, the second support is 3660mm North of the first support. Copyright © 2013. AVEVA Solutions Limited and its subsidiaries. All rights reserved.

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With Box 1 as the current selection, type CO into the 3D View, then select a point on the box for the base point, here P5 has been used.

Input E 0 N 3660 U 0 as the displacement co-ordinates.

Then press the Return key to exit the command.

3.4.3.5 Creating the Tube-Pull Obstruction Volume The Equipment Location drawing shows a tube-pull area for the Reboiler which must be free of obstructions so that the tube bundle maybe withdrawn from the equipment. This kind of volume may be represented by a primitive, but is usually only required for clash detection purposes and would not normally be displayed during modelling activities. These kinds of primitives are called Obstruction Volumes and are placed on the obstruction display levels, 9 10 by default. This type of volume may be used for such things as escape routes, walkways, valve access, maintenance access, lifting access, etc. From the Equipment Location drawing, the tube-pull volume must be 6500 long. Although no diameter is given, making it the OD o f the main vessel, i.e. 835, will adequately cover the tube bundle. Before creating the obstruction volume primitive, go to EQUIPMENT > Defaults and Choose the Obstruction Volume option from the Representation Styles drop down list. Then select Soft from the Obstruction Level list.


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With the EQUI element E1301 as the CE, from the Primitives gallery click the Cylinder button. Choose P1 of Cylinder 2 as the base centre. Enter 835 in the Diameter input box. Enter 6500 in the Height input box. Then press the Return key to finish the command.

The cylinder cannot be seen in the 3D View as the viewing level is set to the default of 6. On the VIEW tab, in the Settings group, click the Graphics button to display the Graphics Settings form. On the Representation tab, in the Level frame, enter 9 in the Others textbox and click the Apply button on the form but do not close it. Although equipment primitives are not usually named, this cylinder has a particular function so re-name it to E1301/TUBE_PULL. On the Graphics Settings form, on the Representation tab, enter 6 in the Others textbox in the Level frame. Note that the tube pull obstruction volume is no longer displayed. Select 50% from the Obstruction Visibility/Translucency options list and click the Apply button. The tube pull obstruction volume is now displayed at 50% translucency.

On the Graphics Settings form, select Off from the Obstruction Visibility/Translucency options list, click the Apply button and close the form. On the PROJECT tab, select Save Work and click the Yes button in the confirmation message.


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Exercise 1 Create Column C1101 This exercise creates the Fractionating Column, tagged C1101. The equipment is comprised of a column and a skirt support, which will each be a sub-equipment element owning the relevant primitives. The Equipment Arrangement drawing for C1101, together with the Nozzle Schedule, is as shown. The view on the right is an Elevation View Looking West.

Iso

View


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VIEW A-A

SECTION B-B

SECTION C-C


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AVEVA Everything3D™ (2.1) Equipment Modelling TM-1811 C1101 Nozzle Schedule Nozzle

Size

Type

N1

100 NB

300lb Ansi Flange

N2

200 NB

300lb Ansi Flange

N3

250 NB

300lb Ansi Flange

N4

50 NB

300lb Ansi Flange

N5

150 NB

300lb Ansi Flange

N6

100 NB

300lb Ansi Flange

N7

50 NB

300lb Ansi Flange

N8

50 NB

300lb Ansi Flange

N9

50 NB

300lb Ansi Flange

N10

50 NB

300lb Ansi Flange

N11

40 NB

300lb Ansi Flange

N12

50 NB

300lb Ansi Flange

N13

40 NB

300lb Ansi Flange

N14

100 NB

300lb Ansi Flange

M1

450 NB

300lb Ansi Flange

M2

450 NB

300lb Ansi Flange

M3

450 NB

300lb Ansi Flange

Additional Information 



Create one sub-equipment named /SKIRT and one sub-equipment named /COLUMN. The origins of both sub-equipments should be the same as for the EQUI element as all dimensions are relative to the underside of the baseplate. The skirt is constructed of a 1473 OD x 30WT tube and has a 600 OD x 20WT access sleeve on the southern axis.



Nozzle N1 and N14 are part of the skirt.



The UV plane should be used to create this equipment.


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Exercise 2 Create Reflux Drum D1201 This exercise creates the Reflux Drum, tagged D1201. The Equipment Arrangement drawing for D1201, together with the Nozzle Schedule, are shown below.

Nozzle Schedule


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AVEVA E3D 2.1 Equipment Modelling Using Primitive -Chapter 3

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