Solid Radioactive Waste Strategy Report.pdf - UK EPR

EPR UK
N° NESH-G/2008/en/0123
REV. A PAGE 84 / 257
8.1.2 Physical Inventory
Particular focus has been directed to the design of the central reactor equipment within the
reactor building (i.e. the primary circuit and its close environment) where components have the
greatest potential to become activated or contaminated.
The primary circuit and its immediate surrounds (illustrated in Figure 23) consists of:
· The reactor pressure vessel (comprising internals and equipped cover head);
· The 4 primary loops which each contain a reactor coolant pump, a steam generator and the hot/cold/ U branch (main
coolant pipes);
· The pressuriser;
· The reactor pit;
· Thermal insulation;
· Vessel supports and structures;
· Core instrumentation;
· The auxiliary circuit up to the first isolation device.
The characteristics of these components are presented in Table 17. Equipment surrounding the
nuclear steam supply system and the rest of the nuclear island, shown in Figure 24 has been
considered globally by type of equipment and for the purposes of estimating the classification of
decommissioning waste. These are listed in Table 18 and Table 19. Concrete arising from the
decontamination of on-site buildings is expected to amount to about 240 m 3 .