Users of process automation systems have struggled with the issue of determining when the useful life of their system is over. Since these systems are crucial to the success of operations from so many aspects, having a strategy based on best practices is essential. Modern process automation systems are comprised of many components that each have different life expectancies. Suppliers have worked in concert with their clients to provide replacements for obsolete components that in many cases have extended the life far beyond the original expectation. This survey will help determine what the current state of the industry is and how it relates to best practices. We will be happy to send you a consolidated copy of survey results when the survey is complete. Thank you for your cooperation. All of your information will be kept confidential.