Label Equipment

Equipment labels must be unique for each drawing produced, for example, unique per sheet. An equipment label consists of up to either four or six parts, depending on project configuration:

• Block

• Function

• Prefix

• Type

• Number

• Suffix

The names of the parts of the Equipment label can be changed but the order cannot. Block and Function are only used if the project is set to use 6 tag fields for equipment in the Equipment - Settings Sub-Category of the AVEVA P&ID Project Administration program.

If the Type or Number are left blank, the project defined null character will replace that field, e.g., V-?-2 or ?-100-2. If any null characters are present in equipment labels, the label is not checked for uniqueness against the other equipment labels on that drawing.

Depending on the setup of the associated project configuration options, delimiters will appear automatically when the equipment label is placed, e.g., V, 1000, A will become V-1000-A. Trailing delimiters will be automatically prevented if parts of the equipment label are not used.

In addition to the requirement that each equipment label must be unique on the drawing, the project may be set to require that selected a field or a combination of fields in equipment labels also be unique.

Inline Equipment

The procedure for labelling inline equipment is identical to that for labelling non-inline equipment.

Equipment With Trim

Sometimes additional piping and attached items are supplied by the vendor as being associated with a vessel. These are known as vessel trim. They are attached directly to the vessel at both ends, or to the vessel and a process line. AVEVA P&ID associates trim to a vessel at the labelling stage.

The default "Trim:" prefix, which signifies that trim labelling is present, may be altered in the Pipes - Labels Sub-Category of the AVEVA P&ID Project Administration program.

Refer to Label Equipment (with or without Trim).

Sub-Equipment

Sub-equipment, such as electrical equipment, must be associated with an existing item of ordinary equipment. The procedure for labelling sub-equipment is identical to that for labelling ordinary equipment.

Refer to Label Sub-Equipment (for example Electrical Equipment).

Equipment Headers

Equipment may be labelled with a separate equipment header. The header includes the equipment label plus any other required text as entered by the user. If an equipment label is changed, the equipment label in an equipment header is automatically updated.

Whether or not equipment headers are to be underlined on P&IDs is specified in the Equipment - Settings Sub-Category of the AVEVA P&ID Project Administration program.

Refer to Add Equipment Headers.

Equipment Descriptions

Equipment may be separately labelled with their descriptions. The description of an item of equipment can be viewed on the Properties dialog of the equipment. It is derived from the selected "Type" of the equipment, or if this has not been specified, the symbol description.

Refer to Add Equipment Descriptions.