[en] The guidelines for structural design of experimental multi-purpose very high temperature gas-cooled reactor (EX-VHTGR) specify the guidelines for quality assurance of materials and welds during fabrication and construction, and inservice inspection to obtain integrity of the structures. The guidelines for inservice inspection are presented, which considers Nuclear Safety Criteria for the Design of Stationary Gas Cooled Reactor Plants, Guidelines for the Structural design of EX-VHTGR at Elevated Temperature Service, ASME Boiler and Pressure Vessel code sec. XI, specifications of EX-VHTGR's system construction. Covered are inspection intervals, areas for examination, extents of examination, examination methodes, examination results evaluation, etc. in three classes of components according to safety nature. (auth.)