The wide absorption spectrum of boron also makes it suitable as a neutron shield.
2.
Boron-containing materials can be used as neutron shields to reduce the activation of objects close to a reactor core.
3.
Long-term integrity of the compact reactor pressure vessel is maintained by providing an internal neutron shield . ( This is in contrast to early Soviet civil PWR designs where embrittlement occurs due to neutron bombardment of a very narrow pressure vessel .)
4.
Marine reactors are designed for long core life, enabled by the relatively high enrichment of the uranium and by incorporating a " burnable reactor pressure vessel is extended by providing an internal neutron shield, which reduces the damage to the steel from constant bombardment by neutrons.
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