Online Dimensioning and Specification Search

Diagrams User Guide

Diagrams : Piping & Instrumentation Diagrams (P&IDs) : Online Dimensioning and Specification Search

Online Dimensioning and Specification Search

The Diagrams application supports a flexible approach to the handling of dimensioning and spec search. The following levels of automation are supported:

•

No dimensioning.

•

Dimensioning without catalogue or spec search.

•

Dimensioning with manual catalogue selection.

•

Dimensioning with automatic spec search.

These methods can also be combined in various ways and allows for an incremental/iterative workflow. It is for instance possible to start a diagram using dimensioning but no catalogue or spec search. At a later time when a catalogue and specification has been established, the spec search can be enabled and the selection of components be done based on the previously entered dimensions.

If the automatic spec search is enabled, the manual catalogue search can not be done for in-line parts, please refer to Manual Component Selection in Chapter Working with Diagrams for more information about the Catalogue Search window.

The dimensioning is using the concepts of Fit and Size operations:

•

Refit means that the current component will obtain a new size from the upstream component. When this will occur automatically, it is called Autofit.

•

Resize means that the user will manually select a new size to be applied to the component. This only applies to branching and size-changing components such as tees and reducers.

The dimensioning can work with varying degrees of propagation of dimension changes. Propagation will always occur in a downstream direction (from head to tail).

There are a number of default settings in Diagrams Options under General Options > Pipe Dimensioning that control the way that the dimension and spec search is operating (please refer to Defaults in Chapter Getting Started):

Default setting

Refit - Autofit on connect

The component will automatically obtain the dimension from the upstream component when connecting.

The component will not obtain any dimension from the upstream component when connecting.

Refit - Autofit on delete

The component following the one that is being deleted will automatically obtain the dimension from the upstream component.

The component following the one that is being deleted will not obtain any dimension from the upstream component.

Refit - Propagate autofit

Autofit should be propagated to downstream components.

Autofit should not be propagated to downstream components.

Refit - Propagate at segment

Autofit propagation will continue over segment limits.

Autofit propagation will not continue over segment limits.

Refit - Propagate at branch

Autofit propagation will continue over branch limits.

Autofit propagation will not continue over branch limits.

Resize - Propagate at segment

Resize propagation will continue over segment limits.

Resize propagation will not continue over segment limits.

Resize - Propagate at branch

Resize propagation will continue over branch limits.

Resize propagation will not continue over branch limits.

Spec Search - Use Specification

The specification search will be used.

The specification will not be used. Dimensioning will be stored locally in each inline part using the BOREARRAY attribute.

Spec Search - Allow out-of-spec selection

SPRE of tubes and inline components can be set to GPART or SCOM rather than to SPCOMPONENT.

SPRE attribute of tubes and inline components can be set only to SPCOMPONENT.

Note:

This setting has no effect when Use Specification is set to False.

Spec Search - Autoselect on define

Specification search and component selection will be triggered when a shape is defined.

No spec search and automatic component selection will be done when a shape is defined.

Spec Search - Ignore defaults in specification

No selection of the first found SELE/SPCO member when TDefault of the SELE is set to EQUA.

1974 to current year. AVEVA Solutions Limited and its subsidiaries. All rights reserved.