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Sealing of cracks in pools of nuclear facilities using robots

A technology for nuclear facilities, mobile robots, applied in the field of cracks

Active Publication Date: 2017-07-18
ELECTRICITE DE FRANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But an angular misalignment, even a small one, can produce unacceptable positioning errors when placing the tape over the crack

Method used

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  • Sealing of cracks in pools of nuclear facilities using robots
  • Sealing of cracks in pools of nuclear facilities using robots
  • Sealing of cracks in pools of nuclear facilities using robots

Examples

Experimental program
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Embodiment Construction

[0044] We first refer to figure 1 , explain a possible environment for the advantageous utilization of robots in the sense of the invention. Here, a pool (indicated by PI) of a nuclear facility, for example for storing spent fuel, fortuitously presents a fissure FI. Usually a weld is made between the steel walls of the pool, for example between stainless steel sheets VO. exist figure 1 In our example, these sheets consist of stainless steel plates mounted on the inner walls of the pool.

[0045]It is often observed that as the sheet gets older, if a crack develops, it will start at this weld. Usually, cracks are covered by adhesive tape BS in strips, often continuous, such as figure 2 shown. The adhesive tape comprises in particular a polymeric adhesive EL (for example an elastomer) covered with a protective film IN, for example of stainless steel. Advantageously, this tape construction provides great flexibility, especially for application to edges or uneven areas, a...

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PUM

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Abstract

The sealing of a crack in a pool of a nuclear facility, using a robot. The sealing, concerns in particular, that of a crack in a wall of a pool of a nuclear facility. In particular, it implements a mobile robot carrying an adhesive tape dispenser. At least the following are provided: controlling a plurality of suction systems, the dispenser being mechanically integral with a first suction system, and controlling the movement of the first system relative to the other systems of said plurality of systems.

Description

technical field [0001] The present invention relates to the sealing of cracks in a pool wall of a nuclear installation. Background technique [0002] Such cracks can appear in the pool walls, especially in the butt welds on the liners, which are usually made of iron. For example, the inner walls of such a pool can be covered with stainless steel sheets and the edges of these steel sheets are welded to each other. The cracks often appear on these welds. [0003] In this case, when such cracks occur, use an adhesive tape made of a polymeric adhesive (such as an elastomer and / or silicone or other, with selected additives) Welding points covering these cracks, as described in particular in document FR 2874020 . [0004] The adhesive has a protective coating, for example in the form of a thin layer of stainless steel, usually similar to the pool wall. For example, tape can be applied along a seam between two layers of a wall to cover cracks that develop at welds between sheet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C13/028B62D57/024E04G23/02G21C17/013G21C19/20
CPCB62D57/024E04G23/0203G21C13/0285G21C17/013G21C19/20E04G23/0214G21C13/028G21C19/207Y02E30/30Y10S901/40Y10S901/44B23P6/04B25J5/00B25J13/00G21C17/003
Inventor 马克·孔特兹马修·拉蒙塔格尼
Owner ELECTRICITE DE FRANCE