Patent ID: 8135484

Claim:
A work instruction document generating apparatus for generating a work instruction document for constructing a system from a system design drawing, the apparatus comprising: a standard configuration article data storage unit storing configuration information on a standard configuration article composed of multiple parts, and identification information for identifying a basic part among the parts belonging to the standard configuration article; a part data storage unit storing part information on a part attached with a property including a connection relationship for indicating whether a connection point of the part is for one of two different connections, which are internal connection and external connection; a part group extracting unit extracting all the parts constituting the system from the system design drawing by using the part information on the part stored in the part data storage unit, identifying a basic part from the extracted parts, and grouping the extracted parts into part groups by grouping the one basic part and other parts connected directly or indirectly to the one basic part through the internal connection, in accordance with the connection relationship; and a work instruction document generating unit, for each part group, detecting a standard configuration article having a same basic part as the basic part included in the part group from the standard configuration article data storage unit, extracting a difference in part configuration between the part group in the system design drawing and the detected standard configuration article, generating information indicating the extracted difference as the work instruction document for each part group, and outputting the work instruction document.