Issued for Review (IFR) means that the document or drawing is Issued for internal or external Review (IFR) or Client Review (FCR). (e.g., Project non-critical Document, etc.)
Related Definitions in the Project: The Document Review and Approval
IFR (Issued for Review)
ThePD (The Project Definition)
ThePD has been developing the Preferred Project Definitions based on the actual project execution and operation experiences and knowledge with the Project Language, and sharing with you daily basis.