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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 231 / 257<br />

FIGURE 95: DOEL STORAGE FACILITY, BELGIUM<br />

Maintenance program of flasks in the interim storage facility<br />

Maintenance during normal storage is expected to be minimal. Apart from visual inspection<br />

of the condition of the flasks and checking of pressurisation of overpressure tank, no further<br />

examination is anticipated.<br />

Visual surveillance<br />

Every 6 months an external visual inspection of the outside surface of the flask is performed.<br />

Pressurisation of overpressure tank<br />

When the pressure in the overpressure tank reaches 4 bars absolute pressure., the tank<br />

must be refilled with helium so that the pressure is set again to 7 bars abs., after having<br />

checked is the flask for no abnormal leakage.<br />

Due to the specified leak rate of the flask monitoring system, the duration between two<br />

refillings of the tank is greater than the storage time 100 years.

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