Method of treating a surface

Details Method of treating a surface Method of treating a surface

1994-11-03

1996-07-23

Pianalto, Bernard

Coating processes

Direct application of electrical, magnetic, wave, or...

Pretreatment of substrate or post-treatment of coated substrate

427140, 427289, 427344, 4273855, 4273977, 427403, 4274071, 4274191, 427427, 427444, 427596, B05D 300

Patent

active

055387640

ABSTRACT:
A method of treating a concrete or other non-metallic surface contaminated with embedded radionuclides to reduce the total level of radioactivity in a concrete or other hydraulically bonded material body is described. The method comprises the steps of producing relative mutual movement between the surface to be removed and a laser heat source such that a layer adjacent the surface is caused to be detached from said concrete body. The surface may be detached as a vapour, in flakes or as a sheet.

REFERENCES:
Derwent Abstract No. AX-91-049031/07, relating to JP 3002595. (no date available).
Derwent Abstract No. 92-157483/19, relating to JP-4099999. (no date available).
S. J. Lee et al., "Shock Wave Analysis of Laser Assisted Particle Removal," J. Appl. Phys., vol. 74, No. 12, Dec. 15, 1993, pp. 7044-7047.
D. J. Flesher, "Lasers and High-Energy Light as a Decontamination Tool for Nuclear Application," Westinghouse Hanford Co., Dec. 1993.
N. S. Cannon et al, "Lasers for the Radioactive Decontamination of Concrete," Westinghouse Hanford Co., Oct. 1993.

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