Editing Neutron flux (section)

=== Reactor vessel wall neutron fluence ===
A [[reactor vessel]] of a typical nuclear power plant ([[Pressurized water reactor|PWR]]) endures in 40 years (32 full reactor years) of operation approximately 6.5×10<sup>19</sup> cm<sup>−2</sup> ([[Energy|''E'']] > 1 [[Electronvolt|MeV]]) of neutron fluence.<ref>[http://www.government.nl/documents-and-publications/reports/2012/07/12/kcb-rpv-safety-assessment.html Nuclear Power Plant Borssele Reactor Pressure Vessel Safety Assessment], p. 29, 5.6 Neutron Fluence Calculation.</ref> Neutron flux causes reactor vessels to suffer from [[neutron embrittlement]] and is a major problem with thermonuclear fusion like [[ITER]] and other magnetic confinement D-T reactors where fast (originally 14.06 MeV) neutrons damage equipment resulting in short equipment lifetime and huge costs and large volumes of radioactive waste streams.