Release of Residues from Melting NORM-Contaminated Steel Scrap - A German Approach
Conference
·
OSTI ID:826351
As many raw materials like crude oil, natural gas, mineral sands, phosphor ores and others are contaminated by radionuclides from the Uranium and/or Thorium decay chain (NORM), also plants for processing these materials became contaminated during operation. When plants are shut down, large quantities of pipes, valves, pumps and other components have to be scrapped. As scrap yards and steel mills are equipped by large detector systems to avoid an input of radioactivity into the steel cycle, decontamination is required before recycling. Siempelkamp is operating a melting plant for processing NORM and/or chemically/ toxically contaminated steel scrap. Beside the decontaminated steel as output, residues like slag and filter dust have to be managed within the range of licensed values. Based on the European Safety Standard the European member states have to implement radiation exposure from work activities with NORM in their Radiation Protection Ordinances (RPO). The German government revised the RPO in July 2001. Part 3 describes exposure limits for workers and for the public. Exposures from residues management have to meet 1 mSv/year. Brenk Systemplanung has performed calculations for assessing the radiation exposure from residues of the Siempelkamp melting plant. These calculations have been based on the input of metal from different origins and include all relevant exposure pathways in a number of scenarios. The calculations have been based on the dose criterion of 1 mSv/y as required by the German RPO. The methods and results will be presented.
- Research Organization:
- Siempelkamp Nukleartechnik GmbH, Krefeld (DE); Brenk Systemplanung GmbH, Aachen (DE)
- Sponsoring Organization:
- none (US)
- OSTI ID:
- 826351
- Country of Publication:
- United States
- Language:
- English
Similar Records
Feasibility of re-melting NORM-contaminated scrap metal
The Study for Recycling NORM - Contaminated Steel Scraps from Steel Industry
Recycling Of Uranium- And Plutonium-Contaminated Metals From Decommissioning Of The Hanau Fuel Fabrication Plant
Conference
·
Tue Oct 26 00:00:00 EDT 1999
·
OSTI ID:750558
The Study for Recycling NORM - Contaminated Steel Scraps from Steel Industry
Conference
·
Sun Feb 23 23:00:00 EST 2003
·
OSTI ID:825862
Recycling Of Uranium- And Plutonium-Contaminated Metals From Decommissioning Of The Hanau Fuel Fabrication Plant
Conference
·
Tue Feb 25 23:00:00 EST 2003
·
OSTI ID:826375