Pipe Creation

Note: For projects developed using versions of AVEVA P&ID older than AVEVA P&ID 7.2 SP3, an upgrade of the pipes and other items on the project drawings is required. Refer to Upgrade Items on Legacy Drawings.

The main points governing the creation of pipes using the Drawing Pipes and Connections procedure are as follows:

• A pipe run can be defined freely as a network with many starts and ends and can be drawn in any pipe style. These multiple origins and destinations are included in the connectivity data transferred to the AVEVA P&ID Reports and are then available for the line list. A pipe can also be created with offsheet connectors by selecting the required end style in the Pipeline group of the Home tab before creating the pipe.

• Branches may be drawn in any pipe style. When a branch is connected to another pipe section a tee point is automatically created. If a branch is deleted, the parent connected pipe automatically remakes itself into one line.

• Trim pipes are usually supplied by a vessel vendor and when labelled, are associated with the vessel. Adding trim is achieved by selecting the vessel and clicking the right mouse button, when a menu is displayed showing the trim options.

• Tracing can be added only to pipes and process links but not to signal lines. By means of appropriate commands, tracing can be added to existing pipes, or automatically included when new pipes are drawn. If tracing is required when a pipe is created an option exists in the Pipeline group of the Home tab to enable it.

• Pipelines do not show a two-way flow, but, in such cases, the AVEVA P&ID Reports line list contains destinations read from connected graphical elements, with an appropriate comment, for example, 'bi-directional'.

• To manually break pipelines for example: when they cross vessels, use of the AVEVA P&ID symbol insert facility is required to insert break symbols. The break symbols, for example, small crosses, are placed by default on the non-plotting layer, but are visible on the screen.

• Where the flow line does not receive a line number, for example, a pressure indicator connected to a pipe or equipment item, process links are used to establish connections between instruments and process items. Where the connecting line is not a signal line, process links are also used for instrument-to-instrument connections. Process links can be drawn in any project defined line style. When data is transferred to AVEVA P&ID Reports, AVEVA P&ID determines pipe, equipment or instrument owners for connected instruments.

• Pipes when created can be automatically labelled by selecting the Auto Label - Pipes option in the Pipeline group of the Home tab. When a pipe's graphical route is completed, and the prompt for a new or branch pipe is answered pipe start and end nodes are placed automatically and the label Properties dialog is displayed to define the label.

• Branches can be added to an existing labelled pipe by selecting the pipe label and clicking the right mouse button to display a menu that shows the Add Branch option.

• A default set of signal lines is provided. The set is to ISA standards and consists of signal lines for electrical, pneumatic, hydraulic, electromagnetic, sonic, unidentified signals, and for capillary tubes.