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 119 / 257<br />
TABLE 37: 4 METRE BOX CHARACTERISTICS FOR ACTIVATED CONCRETE<br />
Nature of waste stream:<br />
Concrete of reactor compartment<br />
Source of documentation: NIREX <strong>Report</strong> N/104-GWPS Volume 1 & 2 Issue 2,<br />
Fundamentals of radioactive waste management<br />
<strong>Waste</strong> stream identifiers:<br />
‘to be allocated’<br />
Raw waste volume: About 77 m 3<br />
Proposed matrix:<br />
Package type:<br />
Raw waste per package:<br />
Mortar matrix<br />
NDA specification 4 metre Box<br />
30.7 tonnes max per package (limited by useful volume).<br />
<strong>Waste</strong> form density: 2340 kg\m 3 (r pitgrout =2360kg/m 3 r grout =2300kg/m 3 )<br />
<strong>Waste</strong> package mass:<br />
50 ton Max<br />
Number of packages: Approximately 6<br />
M package =m container + m immobilised grout + m steel waste + m steel shielding<br />
Physical/chemical composition:<br />
Derivation of case:<br />
The waste in an average package by weight is expected to comprise:<br />
68% of concrete waste,<br />
32% of mortar matrix.<br />
DARWIN PEPIN calculation with representatives flux in the reactor vessel<br />
Reference date: At shut down (years 65)<br />
Total package activity:<br />
<strong>Waste</strong> classification:<br />
(based on mass of wasteform)<br />
External gamma dose rates:<br />
4 metre Box: 0.6 GBq βγ<br />
>12 000 Bq/g - ILW<br />
4 metre Box:<br />
Global Activity βγ 1.99E+04 Bq/g<br />
At 1m: < 0.1 mSv/h<br />
At contact: < 2 mSv/h<br />
From the package.
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