SEALING OPERATION ASSESSING SYSTEM, PROGRAM, ASSESSING METHOD, AND LEARNING SYSTEM

This sealing operation assessing system for assessing an operation result by means of a surface-to-surface distance in a flange which sandwiches a gasket, and which is fastened using bolts and nuts, is provided with: a sealing operation portion (4) provided with a flange (flanged joint 16-1, 16-2) which sandwiches a gasket (18) and which is fastened using bolts (20) and nuts (22); a surface-to-surface distance measuring unit (6) for measuring a surface-to-surface distance in the flange; a processing unit (8) which imports measured values (d) of the surface-to-surface distance from the surface-to-surface distance measuring unit (6), in a plurality of steps from the start of tightening of the bolts to the end of tightening thereof, calculates the difference between the maximum value and the minimum value of the measured values, and assesses a skill level by comparing the difference with an assessment criterion; and an information presenting unit (12) which presents either or both of calculation information proc