Overload Services, Inc. offers maintenance agreements for SmartPlant Instrumentation, Electrical, and P&ID. This maintenance agreement is an addition to that of the maintenance agreement provided by Intergraph and would list Overload Services, Inc. as your first line of support. The maintenance agreement would allow the client to telephone or e-mail Overload Services, inc. with issues and have an OSI representative work on those issues and correspond with the client any resolutions for those issues.