Radioactive waste resin drying system with redundant device

Abstract

The invention belongs to the field of radioactive three waste treatment and disposal of nuclear power plants, and particularly discloses a radioactive waste resin drying system with a redundant device. The system comprises a cone-shaped dryer A and a cone-shaped dryer B as well as an isolating valve and a pipeline communicated with the cone-shaped dryer A and the cone-shaped dryer B. A first isolating valve and a second isolating valve are arranged on the pipeline between a sixth isolating valve and the cone-shaped dryer A; a fourth isolating valve and a fifth isolating valve are arranged on the pipeline between a seventh isolating valve and the cone-shaped dryer B; a first pipeline is arranged on the pipeline between the first isolating valve and the second isolating valve; a second pipeline is arranged on the pipeline between the fourth isolating valve and the fifth isolating valve; and a third isolating valve is arranged between the first pipeline and the second pipeline. The systemcan change the single corresponding relationship between a grinding device and a drying device and can convey media to any one cone-shaped dryer by two grinding devices, so that the reliability and the practicality of the system and the utilization ratio of system equipment are improved greatly.

Description

technical field [0001] The invention belongs to the field of treatment and disposal of three radioactive wastes of nuclear power plants, and in particular relates to a radioactive waste resin drying system with redundant devices. Background technique [0002] In order to reduce the amount of radioactive waste packages and implement the radioactive waste minimization policy, the nuclear power plant has designed a radioactive waste treatment center and introduced a waste resin treatment system (T0KPM) to centralize the radioactive waste resin produced by the number unit. After the radioactive waste resin is transported to the waste treatment center by each unit, it is transported to the receiving tank of the waste resin receiving and metering subsystem (T0KPM10 system) through the quick interface and the ratio of resin and water is carried out, and then transported to the waste resin by the metering pump. The grinding system (T0KPM20) grinds, and when the grinding degree meets...

AI Technical Summary

Problems solved by technology

Therefore, if the conical dryer A of the T0KPM30 system fails suddenly and cannot continue to receive the waste resin from the upstream, it will cause the interruption of the transmission process of the A series of the grinding waste resin of the T0KPM20 system to the downstream. Bleeding out of the system, preventing the Series A grinder from flushing and clogging lines, pumps and grinders

Preventing resin deposits from clogging lines and equipment by continuing to run the A-Series grinding unit wastes a lot of power

Moreover, the A-series grinding device and the conical dryer A are connected in series. When the A-series grinding device is unavailable, the conical dryer A will inevitably be idle. Similarly, when the A-series grinding device is unavailable, the A-series grinding device will also be idle. ; Same for B series

The most important thing is that when the A series grinding device and the cone dryer B fail at the same time or the B series grinding device and the cone dryer A fail at the same time, the entire grinding and drying system will be paralyzed, resulting in waste resin processing system (T0KPM) Unavailable, thereby affecting the normal production of the waste treatment center

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