Solid Radioactive Waste Strategy Report.pdf - UK EPR
Solid Radioactive Waste Strategy Report.pdf - UK EPR
Solid Radioactive Waste Strategy Report.pdf - UK EPR
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<strong>EPR</strong> <strong>UK</strong><br />
N° NESH-G/2008/en/0123<br />
REV. A PAGE 41 / 257<br />
6.3.2 Spent Filters<br />
TABLE 4: WASTE STREAM DATASHEET FOR SPENT FILTERS<br />
<strong>Waste</strong> Stream<br />
Spent Filters<br />
<strong>Waste</strong> Origin<br />
Corrosion occurring in the steam generators results<br />
in particulate corrosion products becoming mobile<br />
in the primary circuit [Ref.27]. Upon passing<br />
through the reactor core, these corrosion products<br />
can become neutron activated. Filters are used to<br />
capture and hence minimise such particulate<br />
material in the <strong>EPR</strong> water auxiliary circuits. Spent<br />
filter cartridges arise from the treatment lines of<br />
water auxiliary circuits: Chemical and Volumetric<br />
Control System, Boron Recycle System, Liquid<br />
<strong>Waste</strong> Treatment System, spent fuel Storage<br />
Compartment Treatment System. Water filters are<br />
withdrawn from operation on the basis of clogging<br />
and/or dose rate.<br />
<strong>Waste</strong> Physical Description<br />
Cartridges are composed principally of stainless<br />
steel supports with glass fibre filter and some<br />
organic materials. The amount of particulate<br />
radioactive material (metallic oxides) trapped on<br />
each filter may be variable.<br />
Nature of <strong>Radioactive</strong> Material<br />
Particulate activated corrosion products filtered<br />
from water auxiliary circuits.<br />
Annual Arising 5 m 3<br />
Total Arising 300 m 3<br />
<strong>Waste</strong> Classification at Time of Generation 275 m 3 ILW<br />
25 m 3 LLW<br />
Main Radionuclides<br />
Cobalt-58<br />
Iron-55<br />
Cobalt-60<br />
Silver-110m<br />
Manganese-54<br />
Hazardous Substances<br />
Boron: 6,000 ppm<br />
Lead: 425 ppm<br />
Nickel: 210 ppm<br />
Chromium: 240 ppm<br />
Cadmium: 11 ppm<br />
Arsenic, antimony, mercury: 5 ppm<br />
Beryllium, selenium: 0.2 ppm