| CPC G21C 11/026 (2013.01) [G21C 17/116 (2013.01); G21F 3/00 (2013.01); G21F 7/005 (2013.01); H02G 3/22 (2013.01)] | 14 Claims |

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1. A method for providing a neutron radiation shield comprising:
providing a wall having an opening; and
at least partially filling a space in the opening with a neutron moderator by blast-injecting plastic granules into the opening with a blower device to form the neutron moderator.
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