A natural ventilation system is generally adopted for storage facilities of spent nuclear fuel. At the storage facilities of concrete casks built near the seashore, the air including the sea salt particles comes into the concrete casks and could cause SCC of the canisters made of stainless steel. In this study, we proposed a salt particle collection device with low pressure loss which does not interfere with the air flow into the building or the concrete casks. Pressure loss tests in a laboratory and salt particles collection tests in the field were performed. Performance of the device adapted for the concrete cask was evaluated using obtained data.
