PIPE ROUT

Practice 000 250 9112 Date 13Dec99 Page 1 of 10

PIPING APPLICATION GUIDE PIPE ROUTING PURPOSE

This practice defines guidelines for modeling within a piping design file for the Piping Designer, properly trained to use Intergraph PDS.

SCOPE

This practice defines activities and responsibilities for the following major sections: •

REQUIRED INFORMATION

•

MANUAL LAYOUT

•

DESIGN PRIORITIES

•

DESIGN AREA BOUNDARIES

•

COMMANDS

•

PIPE MODELING

•

STRESS APPROVAL

•

MODEL REVISIONS

•

ISOMETRICS

•

USER INSTRUCTIONS

•

SPECIFICATION CHANGES (REFERENCE DATABASE)

•

REFERENCES

APPLICATION

This practice is to be used whenever creating Piping Models on the Intergraph PDS system in conjunction with applicable job standards and and specifications. It shall be used by the responsible Piping Designer. In case of unresolved conflicts between this practice and specific Project PDS Execution Plan, the Project PDS Execution Plan shall govern.

REQUIRED INFORMATION

Below is a list of informational sources necessary to develop, status, and complete a Piping Design Area:

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AFC Plot Plan ( APPROVED FOR CONSTRUCTION)

•

LCP (Location Control Plan) / LCM ( LOCATION CONTROL MODEL)

•

Mechanical and Utility Flow Diagrams

•

Project Piping Seed File *

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Dimensional Outlines For Equipment (equipment modeling)

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Project Specifications, Standards, and Drafting Room Instructions

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Piping Design Area Index * Piping Engineering


PIPING APPLICATION GUIDE PIPE ROUTING

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Dimensional Outlines For Instrumentation

•

Preliminary Structural Information

•

Piping Control Level Schedule (discuss with Supervisor)

•

Step II Transpositions

•

Underground Transpositions Approved by Civil

•

Line List

•

PAG (Piping Applications Guide for Intergraph PDS) *

•

Design Area Control Book

Tracking documents include the following: •

Isometric Log (Sheet Number Assignment) *

•

Isometric Issue Record

•

Form: 000.250.F2106: Design Area Status Record *

•

Form: 000.250.F2103: Equipment Status Record (Equipment Modeling) *

*

Specifically PDS related.

MANUAL LAYOUT

To maximize efficiency, manual layout should be held to a minimum to avoid using PDS merely as a drafting tool. Step II Flow Diagram Transpositions (refer to Piping Engineering Practice 000.250.2010: Plant Arrangement - Flow Diagram Transposition Instructions) should be the only manual layout required for many PDS projects. These layouts will provide a document of record for the client to review and approve the conceptual design before detailed design begins with PDS. Additional manual layout may be required for complex design areas such as towers and reciprocating compressors, but this can be done using PDS also.

DESIGN PRIORITIES

The following guidelines will help to establish design priorities for PDS input:

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Route largest pipe sizes first.

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Route pipe made of exotic materials (long delivery).

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Route pipe requiring stress analysis.

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Route pipe connected to equipment with long delivery dates for nozzle orientation and pipe support clips.

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Route pipe directly related to setting the location of equipment.

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Route pipe in areas that will be constructed first according to the construction schedule.

Piping Engineering



Before beginning to route pipe, review these guidelines with the Supervisor for any additional priorities.

DESIGN AREA BOUNDARIES

The 3D volume or boundaries of a piping Design Area are established by the Piping Design Supervisor taking into consideration related equipment, schedule, estimated quantity of ISOs (approximately 25-50 per Model), and interface requirements. More than one model may exist in a design area to accommodate more ISOs. These models also could be split up according to process, utilities, auxiliary piping, vessel trim, etc. Piping contained within these coordinate boundaries should be modeled within the Design Area. Note!!! Piping that continues into an adjacent Design Area should be modeled to a logical ISO break point, but should not extend abnormally beyond the adjacent design area boundary.

The designer responsible for the adjacent Model within the Design Area, should continue the line using a new ISO sheet or line number. If the line continues through more than two adjacent Design Areas (possibly in a pipeway) , it may be necessary to break the line into more ISOs for the straight runs of pipe. It is possible, but not recommended, to break the line at the Design Area boundaries and use the same sheet number in all Design Areas involved. This will necessitate additional interface to determine who is responsible for the isometric using that sheet number. A line should never be modeled with the same sheet number completely through an adjacent Design Area, into a third, within the User's own Design Area. This may appear to be an easy way to run a line without having to coordinate with another designer, or go into another Design Area to continue the line. However, it can cause problems for all disciplines in interfer ence checking (IFC), in Design Review, and for auditing.

COMMANDS PLACEMENT COMMANDS

Place Component: Manually places components (such as valves or fittings), piping, instruments, or assemblies. Sketch: Defines the centerline geometry for a pipeline and defines the attributes of the piping segment or component placed in the Design Area Automated Placement: Places items such as pipes, elbows, reducers, branch components, and flanges on the piping segment according to the attributes and the geometry of the segment.

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Piping Engineering



Add Chain Wheel: Modifies the operator on an existing valve component. Add to Valve: Modifies the operator on an existing valve component to define a floorstand, or extension stem on a handwheel. Tap Component: Adds a tap to an existing component allowing the Designer to place field supports, or stubs of pipe on an existing component. However, do not place Taps on Tees, and Tap Elbows only once. Place Pipe Support: Places physical pipe supports which take up physical space in the model. Ideal for Interference Checker. Place Logical Support: Places logical pipe supports. The supports will be indicated by an "X" only. No size or shape. Copy Pipe Support: Copies existing Physical, or Logical pipe supports. Copy Piping: Creates graphics by copying existing components or lines in the active model, or Reference File. Copy and Mirror Piping: Creates graphics by copying and mirroring existing components or lines in the active model, or Reference File. Copy and Rotate Piping: Creates graphics by copying and rotating existing components or entire lines in the active model, or Reference File. Construct: Places non-intelligent graphics in the model for use as construction aids. *

For more detailed information on these commands and their use, see the Piping Design Graphics (PD_Design) Reference Guide.

REVISE SEGMENTS Note!!! Before using these commands, delete all components, or pipe from that Segment, and/or isolate the Segment if required.

Move Vertex: Moves an identified segment vertex to a new location. You can move the vertex to any location by keying in delta distances, absolute distances, or a distance and direction (for moves at an angle). Insert Vertex: Inserts a vertex in a specified segment pipe run. The new vertex is inserted in the pipeline following the vertex used to identify the pipeline. Delete Vertex: Deletes a vertex from a piping segment and redraws the piping segment to reflect the deleted vertex. *


REVISE GROUP

Move Piping: Moves an entire pipeline or the elements defined by the active group to a specified location.

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Piping Engineering



Move Pipe Run: Moves a specified pipe run to a new location while maintaining the connectivity to the connecting pipe runs in the piping segment. Move Pipeline End: Moves a pipeline end point to a new location. Move Piping Assembly: Moves a piping assembly (set of connected piping components). Delete Piping: Deletes piping components and/or segments from the active model. Delete Piping Assembly: Deletes a group of connected mating components or a single component or pipe. Mirror Piping: Mirrors existing piping to a specified location in the active model. Rotate Piping: Rotates a pipeline or the elements defined by the active group by a specified angle of rotation. Reconstruct Piping: Reconstructs a specified part of the model, or a specific line to update the graphical representation and the alphanumeric data associated with that piping, based on changes in the Piping Reference Data, the P&ID database, or the piping segment data in the model. (See Piping Engineering Practice: 000.250.9134: Reconstruct Piping for additional information.) Replace Piping: Replaces a component by selection, or active group on a specific Line & replaces them with a component of a different commodity. *


REVISE DATA

Revise Attribute: Modifies the database attributes or user data associated with a selected element, or entire segment. Attribute Break: Creates an attribute break at a point on an existing piping segment. Connect Segments: Combines two piping segments with coincident endpoints. Revise Component Data: Selectively revises data for piping components, pipes, instrument components, or pipe supports. Revise Gasket Option: Specifies an optional gasket for a specified component connect point. Revise Bolt Option: Specifies optional bolt data for a specified component connect point. Revise Weld Type: Specifies the weld type for a specified component point. Iso Drawing Limit: Places a marker indicating an isometric drawing limit in the user data of a selected piping item connect point (both mated items will be updated). (Not commonly used) Component Group: Defines a set of components to be treated as a group. /0002509112.doc

Piping Engineering



Revise Segment Data: Allows user to revise the Attribute Segment Data for selected segments in one step. Update Segment From P&ID: Automatically updates piping segments data from the P&ID database and reloads piping segment data for those segments in the active model for which P&ID node numbers were previously stored. Re-Compute Thickness: Re-calculates the wall thickness values of entire pipelines or of an active group in the active model. Update From RDB: Updates data in the model based upon revisions to data in the Specification/Material Reference Database, (such as a change to the Piping Job Specification or Physical Data Library). You must use Reconstruct Component for physical dimension changes. Load Weld Numbers: Automatically creates weld numbers that are unique within the project. Approve Piping: Changes the approval status of a pipeline or by the active Model, and highlights the line gray, changing the color & level, for tracking and status purposes. *


REVIEW DATA

Review Attribute: Used to review only, the attribute values and user data for a specified component in the model. Review Nozzle Data: Used to review the attribute values for all the nozzles associated with a specified equipment item. Review Report: Used to review the contents of any existing report. Temporary Symbology: Used to highlight a line or components on screen for viewing status of, or troubleshooting lines. *


FILE COMMANDS

Plot Model: Plots the active model. File Design: Saves the active Microstation and PDS parameters. Exit: Exits the graphics environment. Active Options: Activates a FORM which can be used to specify, or change any Model settings. Data Verification and Diagnostics: Provides access to a set of utilities used to verify the integrity of the model file.

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Piping Engineering



Reference Model: Provides a set of options for controlling reference file attachments. *


PIPE MODELING

Access to the piping design files (graphics environment) is done through the PD_Shell command "Piping Designer." Once the User has the required information, the equipment has been modeled for the Design Area, the piping model file has been created, and an agreement has been reached with the Supervisor for the estimated work from Piping Engineering Form: 000.250.F2106: Design Area Status Record, the designer is ready to begin modeling. Use the Design Area Status Record as a checklist while modeling. This will help monitor progress during the development of the Design Area, and is much easier than updating it weekly or monthly. As much detailed design as feasible should be done in the model file, with minimum manual layout. Refer to the Flow Diagram Transposition drawings to aid in the development of the Design Area. Model everything necessary to produce ISOs, orthos, and MTO reports. Also, make sure that everything necessary for an accurate IFC (ins. thk.) and Design Review is in the model. Model all lines on the P&ID (Process & Instrument Diagram) that have a line number and are located within the piping Design Area. If preliminary information is being used, model as little detail as possible. Do not spend a lot of time detailing based upon speculative information. To insure that the correct commodity option is placed, select Active Options from the File menu and toggle Commodity Material Description to ON and toggle the Default Commodity Selection to Automated Commodity Options. For instrument connections which do not require graphics such as a TI (Temperature Indicator) or PI (Pressure Indicator), use the instrument indicator located under instrument items. In the case of flanged instruments, this will allow generation of bolts and gaskets. It also provides as instrument tag at the connection, which wi ll note on the Isometric. Model all in-line instruments shown on the P&ID using the Instrument option on the place component IFORM. Model all specialty items shown on the P&ID using the Piping Specialty Item option on the place component IFORM. Indicate insulation requirements (insulation purpose and insulation thickness attribute breaks).

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Piping Engineering



Model all vents and drains for hydrotesting. Model vessel trim only if it consists of a significant amount of pipe and components, and could affect an accurate design review or the IFC. Modeled vessel trim lines will consist of different iso sheets with the same line number. The standard setup for the design file is to use simple symbology instead of detailed symbology. Therefore, the graphics for socket welded and screwed components do not include the hub. The ends of the components shown in the model represent the bottom of the socket or end of threads. Therefore, pay particular attention to the weld clearance necessary between the hubs for socket welded components, and proper clearance necessary for screwed fittings in tight situations. For modeling limitations and special concerns, refer to Piping Engineering Practice 000.250.9180: Memos.

STRESS APPROVAL

A set of isometrics of each proposed piping system (stress marked in the line list) to be used on the contract will be reviewed by the Stress Engineer. The engineer will then determine if any further requirements need to be incorporated in the piping isometrics. At this time the Stress Engineer will also review any piping isometrics with multiple potential support locations. The engineer will determine support points where components such as field supports and anchors, etc. are to be incorporated.

MODEL REVISIONS

Past experience has shown that most file corruptions and mistakes occur while using the many revision commands. Also, mismatches between the Line Route Segment attribute data and component/pipe data occur while using these commands because of the structure of the database. Changes made to the Line Route Segment that will affect the physical make-up of the pipe or components will require the model graphics to be updated. This update is not done automatically and requires the designer either to delete and replace pipe/components or use one of the model graphic update commands designed for this purpose (the Reconstruct commands). This only applies to pipe/components that have been placed. If a Line Route Segment does not have any pipe/components associated with it, then the attribute data can be changed and no further action is necessary. If Reconstructing a component is required: 1.

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Use the "Reconstruct Component" command on the revise component palette. This command works with one component at a time.

Piping Engineering



2.

Use the "Reconstruct Piping" command on the revise group palette. This command works with an entire pipeline at once, however, use caution when using this command on a complex design configuration.

3.

Depending on the situation, you may want to delete and replace the pipe/component from the Line Route Segment. This is the safest way to get the desired results, but can be more time consuming.

*

For more detailed information, see Piping Engineering Practice 000.250.9134: Reconstruct Piping.

ISOMETRICS

Isometric Pipe Drawings are a finished product for construction, fabrication, installation, service conditions, insulation, tracing requirements, supports, and material take-off. Therefore; prior to extracting an isometric drawing, check for stress requirements, and also check the piping model for RDB (Reference Database), IFC, and specific requirements before extracting isometrics. For isometric instructions see Piping Engineering Practice 000.250.9113: Isogen.

USER INSTRUCTIONS

Instructions in the form of Drafting Room Instructions (D.R.I.) and Plant Design System (PDS) memos will be issued in the job book on pipe modeling. Such instructions will be issued periodically during the course of the project to inform Design Area designers of contract specific situations and PDS requirements that arise during the design phase.

SPECIFICATION CHANGES (REFERENCE DATABASE)

Specification changes occur during the course of a project. Changes in the fabrication category guidelines, additions of valves or fittings, size break changes for socket weld versus butt weld, and many other situations may cause the piping spec to be modified. All changes made to the reference database are made by the Reference Database Coordinator. When a spec change occurs on the project, the Reference Database Coordinator, the Piping PCS (Project Computer Specialist), and the Piping Design Supervisor should meet to discuss the change. From this meeting, a course of action will be decided upon, based on whether previously placed graphics in the model are affected or if the change affects only future placement in the model. Who will make the model changes and how they will be made will be decided upon at this time.

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Piping Engineering


PIPING APPLICATION GUIDE PIPE ROUTING REFERENCES

Piping Design Graphics (PD_Design) Reference Guide Piping Engineering Practice 000.250.2010:

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Plant Arrangement - Flow Diagram Transposition Instructions

Piping Engineering Practice 000.250.9113:

Isogen


Reconstruct Piping


Memos

Piping Engineering Form 000.250.F2103:

Equipment Status Record

Piping Engineering Form 000.250.F2106:

Design Area Status Record

Piping Engineering

PIPE ROUT

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