Here is a procedure for developing a GA (General Arrangement) diagram of a control panel along with a mimic on the panel as per international standard:

Procedure for Developing a GA Diagram of a Control Panel with Mimic

Step 1 : Gather Information

• Review the project documentation, including the control panel design specifications, instrument specifications, and installation details.
• Identify the instruments and devices to be included in the control panel, such as pushbuttons, indicators, and meters.
• Determine the required connections, including electrical, pneumatic, and hydraulic connections.

Step 2 : Determine the Control Panel Layout

• Determine the control panel layout, including the size, shape, and orientation of the panel.
• Identify the location of each instrument and device on the panel.
• Consider the ergonomics and accessibility of the panel.

Step 3 : Choose a Drawing Tool

• Select a drawing tool, such as AutoCAD, Visio, or specialized control panel design software, OR use the one which is created for the virtual laboratory to create the diagram.
• Ensure the drawing tool is capable of creating diagrams that meet international standards.

Step 4 : Create the GA Diagram

• Start by creating a new diagram and adding the control panel outline, as per international standard.
• Add the instrument and device symbols, including pushbuttons, indicators, meters, and other components.
• Connect the instruments and devices, using the appropriate connection symbols.
• Include any necessary annotations, such as tag numbers, instrument names, and connection details.

Step 5 : Add Mimic Details

Add the mimic details, including:

• Mimic diagram layout and design
• Instrument and device symbols on the mimic
• Connection symbols and wiring details on the mimic
• Any other relevant details, such as alarm and warning indicators

Step 6 : Review and Verify

• Review the GA diagram and mimic for accuracy and completeness.
• Verify that the diagram meets international standards and project requirements.
• Check for any errors or inconsistencies.

Step 7 : Finalize and Distribute

Finalize the GA diagram and mimic and distribute it to relevant parties, including:

• Control panel manufacturers
• Installation and commissioning teams
• Operations and maintenance personnel
• Quality control and assurance teams

International Standards for GA Diagrams and Mimics

The GA diagram and mimic should be created in accordance with international standards, such as:

• ISA (International Society of Automation) standard 5.1, "Instrumentation Symbols and Identification"
• IEC (International Electrotechnical Commission) standard 60617, "Graphical Symbols for Diagrams"
• ANSI (American National Standards Institute) standard Z535.1, "Safety Color Code"

Example of a GA Diagram with Mimic

Here is an example of a GA diagram with a mimic for a control panel: This is a simplified example, and the actual GA diagram and mimic will vary depending on the specific project and its requirements.

By following this procedure, you can create a clear and accurate GA diagram with a mimic that meets international standards and ensures the successful design and operation of control panels.