A multi-use incore system for use with a nuclear reactor having a reactor core including an instrumentation tube is disclosed. The multi-use incore system comprises a drive cable, a neutron detector, an electromagnetic tool, and an irradiation target. The drive cable comprises an adapter at its distal end. The drive cable is slidably receivable into the instrumentation tube. The neutron detector is removably attachable to the adapter of the drive cable to monitor core power distribution. The neutron detector is slidably receivable into the instrumentation tube by the drive cable. The electromagnetic tool is removably attachable to the adapter of the drive cable in lieu of the neutron detector. The irradiation target is to produce a radioisotope. The drive cable is selectively attachable to the irradiation target by the electromagnetic tool to insert the irradiation target into the instrumentation tube and remove the irradiation target from the instrumentation tube.

A multi-use incore system for use with a nuclear reactor having a reactor core including an instrumentation tube is disclosed. The multi-use incore system comprises a drive cable, a neutron detector, an electromagnetic tool, and an irradiation target. The drive cable comprises an adapter at its distal end. The drive cable is slidably receivable into the instrumentation tube. The neutron detector is removably attachable to the adapter of the drive cable to monitor core power distribution. The neutron detector is slidably receivable into the instrumentation tube by the drive cable. The electromagnetic tool is removably attachable to the adapter of the drive cable in lieu of the neutron detector. The irradiation target is to produce a radioisotope. The drive cable is selectively attachable to the irradiation target by the electromagnetic tool to insert the irradiation target into the instrumentation tube and remove the irradiation target from the instrumentation tube.

To provide an electrical penetration capable of being used in nuclear power plants which are designed assuming operation under conditions of the severe accident. An electrical penetration includes: a tubular sleeve member 10; two or more insulating seal members 20A and 20B arranged inside the sleeve member 10 so as to be spaced from each other; wiring members 60, 60 disposed along the longitudinal direction of the sleeve member 10 so as to extend across two insulating seal members of the two or more insulating seal members 20A and 20B; and outer seal members provided inside the sleeve member 10 and at the outermost portions of the two insulating seal members 20A and 20B. The wiring members 60, 60 are each covered with an insulator made of the same material as those of the outer seal members 21A and 21B.

To provide an electrical penetration capable of being used in nuclear power plants which are designed assuming operation under conditions of the severe accident. An electrical penetration includes: a tubular sleeve member 10; two or more insulating seal members 20A and 20B arranged inside the sleeve member 10 so as to be spaced from each other; wiring members 60, 60 disposed along the longitudinal direction of the sleeve member 10 so as to extend across two insulating seal members of the two or more insulating seal members 20A and 20B; and outer seal members provided inside the sleeve member 10 and at the outermost portions of the two insulating seal members 20A and 20B. The wiring members 60, 60 are each covered with an insulator made of the same material as those of the outer seal members 21A and 21B.