A biological sealing method for the hole in the wall of the nuclear island building of a nuclear power plant

Abstract

The invention belongs to the design technology of nuclear power plants, and in particular relates to a biological sealing method for holes in walls of nuclear island workshops of nuclear power plants. The present invention first proposes a judgment method for quickly judging whether the hole in the wall of the nuclear island building of a nuclear power plant needs to be biologically sealed. The plugging process specification is a set of very operable standard procedures. Through this method, misjudgment of hole plugging due to different experience and judgment basis of staff can be avoided to the greatest extent, and the work’s impact on personnel qualifications and working hours can be reduced. The limitation of bio-sealing reduces the cost of bio-sealing and improves work efficiency at the same time.

Description

technical field [0001] The invention belongs to the design technology of nuclear power plants, and in particular relates to a biological sealing method for holes in walls of nuclear island workshops of nuclear power plants. Background technique [0002] During the construction of the nuclear power plant, it is inevitable that various items interpenetrate between the rooms of the nuclear island plant, such as pipes, cables, etc. A hole of the appropriate size will be reserved. In order to ensure the integrity of the civil structure, various holes or casings need to be blocked after the items (pipes, etc.) pass through to restore the functions realized by the civil structure, such as: airtight, watertight, fireproof, biological shielding. [0003] Due to the complex structure of the nuclear power plant building, the large number of systems and equipment, there are also many items that need to be penetrated during the construction process, and the number of reserved holes is h...

AI Technical Summary

Problems solved by technology

The previous practice was to judge and block the holes one by one based on factors such as the diameter of each hole, the radiation partition of the room on both sides of the hole, and the height of the hole on the wall. Due to the different experience and judgment basis of the staff, the blocking of the holes The result of demand judgment is bound to be different, resulting in that the holes that should be plugged are not plugged, but the holes that do not need to be plugged are blocked, which not only consumes a lot of time and manpower, but also increases the project cost and may leave a safety hazard

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