Community Research and Development Information Service - CORDIS

Abstract

Melting is being implemented for the treatment of contaminated steel parts from the CO(2) circuits of the G2 and G3 gas-cooled reactors at Marcoule. By homogenizing the contamination products throughout the metal mass, this process will produce ingots with specific activity less than 1 Bq/g{-1}, or blocks with specific activity greater than 1 Bq/g{-1}. It will be possible to reuse the metal in the nuclear industry as biological protections.
The Infante installation covers several restricted-access or controlled zones: scrap metal preparation zone; melting zone; ingot casting zone; utility rooms and ventilation rooms. Before the melting unit could be installed, sufficient space had to be cleared in the G3 reactor building.
Radioactive quantification measurements of the material before melting have been developed. The activity level of the scrap metal is measured in the transport container. The ingot activity is monitored on representative samples after measurements on molten metal samples.
The reports show that the melting programme has been satisfactory as regards both safety and decontamination. This industrial-safety facility has well demonstrated its capacities and shown its suitability for use in dismantling. g.

Additional information

Authors: PARIS J, CEA-UDIN, Bagnols-sur-Ceze (FR);TACHON M, CEA-UDIN, Bagnols-sur-Ceze (FR);STRAUSS, CEA-UDIN, Bagnols-sur-Ceze (FR)
Bibliographic Reference: EUR 16939 EN (1996) 47pp., FS, ECU 7
Availability: Available from the (2)
ISBN: ISBN 92-827-7816-9
Record Number: 199611331 / Last updated on: 1996-11-11
Category: PUBLICATION
Original language: en
Available languages: en