The Czech Nuclear Education Network renders some nuclear power equipment online:

Circulator pump:
http://www.cenelin.org/en/content/3d-hlavni-cirkula%C4%8Dn%C3%AD-%C4%8Derpadlo
(direct link)


PGV-1000 steam generator:
http://www.cenelin.org/en/content/3d-parogenerator-pgv1000
(direct link)