Shielded protective tent assembly

A protective, tent technology, applied in the field of glove boxes, can solve the problems of heavy lead shields, limit the flexibility of operators, cannot reduce the neutron radiation dose rate, etc., to reduce secondary waste, reduce costs, and reduce secondary The effect of waste generation

Inactive Publication Date: 2012-12-19
BELGONUCLEAIRE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, lead shields have the following disadvantage: they cannot reduce the radiation dose rate of neutrons to the operator wearing it, they can only protect against gamma rays
Furthermore, these lead shields are heavy, restricting the operator's dexterity and placing an additional burden on the operator when performing physically exhausting and dangerous cutting work within known protective tent assemblies

Method used

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  • Shielded protective tent assembly
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Embodiment Construction

[0029] In the context of the present invention, "alpha-sealed" or "sealed" is understood to be not an absolute seal, but one with low permeability to gases, liquids and / or dust in the event of deliberate intervention, such as handling radioactive materials The highest acceptable level known to those skilled in the art. When the internal pressure of the sealed shell is reduced by 100-200 Pa compared with the atmospheric pressure, that is, when the vacuum is drawn, the "alpha seal" or "sealing" in the context of the present invention can be realized, and the sealing ratio is 0.1%. volume / hour.

[0030] figure 1A conventional glove box 1 and operator 2 are depicted. The glove box shown is a single glove box. But it is obvious that a plurality of glove boxes can be connected to each other, so that the present invention can be used not only for a single glove box tent assembly, but also for a plurality of glove box tent assemblies. Glove boxes are the most frequently used seale...

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Abstract

A nuclear radiation protective tent assembly (10) for intervention by an operator (2) on a glove box (1), said tent assembly comprising at least one leak tight envelope (4) and an outer support (11), said envelope being formed by at least one flexible sheet and being provided with at least one access opening (15), said envelope being mounted on said outer support (11), said tent assembly further comprises an outer transparent shielding panel (7) provided to be placed peripheral to said envelope, said shielding panel having at least one further access opening (9) for enabling said operator to have access via said at least one access opening to an inner space of said envelope, said panel being provided for shielding said operator (2) against nuclear radiation, said outer support being provided with means for holding said shielding panel (15).

Description

technical field [0001] The present invention relates to a tent assembly for use in the field of handling nuclear material. In particular, the present invention relates to a radiation protective and disposable tent assembly, such as a glove box, for intervention with radioactive contamination such that the intervention is in a sealed environment next. The tent assembly includes at least one sealed shell and an outer support. Such interventions include, for example, the dismantling and overhaul of nuclear installations. Background technique [0002] Nuclear installations generally require intervention - at some point in their useful life - at which point opening said nuclear installation risks releasing radioactive material and exposure to alpha, beta and / or gamma rays and / or neutrons. [0003] Nuclear installations such as mixed oxide fuel ('MOX,) or other plutonium-containing fuel production installations factory ports, such as contaminated glove boxes, consume fuel to re...

Claims

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Application Information

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IPC IPC(8): G21F7/04
CPCG21D1/003G21F7/04G21F7/02G21Y2002/501G21F3/00
Inventor 不公告发明人
Owner BELGONUCLEAIRE SA
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