Often used in industrial documentation to refer to storage tanks (e.g., fuel, water, or chemical tanks) or specific technical drawings associated with them.

If this is for work, search your company’s Document Management System (DMS) or project FTP server.

A configuration or firmware "zip" for an SEL protection relay used in an MDR (Medium Density Residential) development power substation.

For zoning documents, check the official website of the City or County Planning Commission where the project is located.