Decontamination of metal surfaces in nuclear power reactors

Details Decontamination of metal surfaces in nuclear power reactors Decontamination of metal surfaces in nuclear power reactors

1983-06-07

1986-05-06

Lechert, Jr., Stephen J.

Compositions

Radioactive compositions

134 3, 134 27, 134 28, 252146, 252631, 376310, 422159, 422903, G21F 900, C23G 102

Patent

active

045870438

ABSTRACT:
A method for decontaminating metal surfaces having radioactive oxide deposits thereon is disclosed which comprises preparing a decontamination solution having a pH of about 1.5 to about 4 comprising water, about 0.02 to about 0.5% of a water soluble organic acid which has an equilibrium constant in a complex with ferric ion of at least about 10.sup.9 and which is capable of producing a pH of about 2 to about 3 in water, and about 0.01 to about 0.4% of a chelate in free acid form which has an equilibrium constant in a complex with ferric ion of about 10.sup.15 to about 10.sup.19 and which is at least 0.4% soluble at 40.degree. C. in water having a pH of about 2 to about 3. An apparatus for performing the above method is disclosed.

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Hawley, G. 1981, The Condensed Chemical Dictionary-10th edition, Van Nostrand Reinhold Company, New York, p. 852.

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