Check Sheet for Control System Audits
• Model numbers of components
• Instrument installation
• Communication capability of electronic devices
• Physical condition of instruments, valves, controllers, and wiring
• Valve position, cycling at typical conditions
• Operating procedures, problems, suggestions
• Documentation
• Problems with regulatory control
• Multiple operator interface devices to various systems
- The first step of the audit is to review the prerequisites with the auditor.
- Perform a physical audit of the systems
- Define the gap that exists between the functionality needed and the functionality in the present systems.
- Evaluate the upgrades needed to close or eliminate the functional gap using plant standard equipment where applicable.
- Evaluate the modifications to the operation and maintenance practices needed with the system upgrades to
achieve and sustain the project goals. - Make a formal recommendation of the most effective upgrade that will evolve the present systems and supply the functionality needed to achieve the goals of the project
- Audit the system performance as compared to the project goals and the agreed-upon project success criteria approximately 6 months after the upgrade project is complete.