Patent Number: 
Section: claims

1. An underground nuclear reactor, comprising:a containment member including:(a) a bottom wall having a first end, a second end, a first side, a second side, an upper side and a lower side;(b) an upstanding first end wall having a lower end, an upper end, an inner side, an outer side, a first end and a second end;(c) said first end wall extending upwardly from said first end of said bottom wall;(d) an upstanding second end wall having a lower end, an upper end, an inner side, an outer side, a first end and a second end;(e) said second end wall extending upwardly from said second end of said bottom wall;(f) said second end wall of said containment member having a door opening formed therein;(g) a door movably positioned in said door opening in said second end wall of said containment member with said door being movable from a normally closed position to an open position when an explosion or blast occurs in the nuclear reactor;(h) an upstanding first side wall having a lower end, an upper end, an inner side, an outer side, a first end and a second end;(i) said first side wall extending upwardly from said first side of said bottom wall;(j) an upstanding second side wall having a lower end, an upper end, an inner side, an outer side, a first end and a second end;(k) said second side wall extending upwardly from said second side of said bottom wall;(l) an upper wall having a first end, a second end, a first side, a second side, a lower side and an upper side;(m) said upper wall extending between said upper ends of said first end wall, said second end wall, said first side wall and said second side wall so that said containment member defines an interior compartment therebetween; and(n) said upper wall of said containment member being located below ground level whereby said containment member is completely buried in the ground;a nuclear reactor positioned in said interior compartment of said containment member;an elongated and hollow blast tunnel comprising:(a) a bottom wall with a first end, a second end, a first side, a second side, an upper side and a lower side;(b) an upstanding first side wall extending upwardly from said first side of said bottom wall with said first side wall having an upper end, a lower end, a first end, a second end, an inner side and an outer side;(c) an upstanding second side wall extending upwardly from said second side of said bottom wall with said second side wall having an upper end, a lower end, a first end, a second end, an inner side and an outer side;(d) a first end wall, having an upper end and a lower end, at said first end of said bottom wall and which has a door opening formed therein which communicates with said door opening in said second end wall of said containment member when said door is in said open position;(e) a second end wall, having an upper end and a lower end, at said second end of said bottom wall which extends between said second ends of first and second side walls;(f) an upper wall positioned at said upper end of said first end wall of said blast tunnel, said second end wall of said blast tunnel, said first side wall of said blast tunnel, and said second side wall of said blast tunnel; and(g) said walls of said blast tunnel defining a blast chamber configured to receive debris from said nuclear reactor in the event that said nuclear reactor explodes thereby creating a blast force extending therefrom. 2. The underground nuclear reactor of claim 1 wherein said upper wall of said blast tunnel has a roof opening formed therein and wherein a roof portion is positioned on said blast tunnel and which is positioned in said roof opening to normally close said roof opening but which is selectively movable to an open position. 3. The underground nuclear reactor of claim 1 wherein a plurality of spaced-apart first deflectors are secured to said inner side of said first side wall of said blast tunnel so as to be partially in the path of debris passing through said blast tunnel from said first end of said blast tunnel towards said second end of said blast tunnel and wherein a plurality of spaced-apart second deflectors are secured to said inner side of said second side wall of said blast tunnel so as to be partially in the path of debris passing through said blast tunnel from said first end of said blast tunnel towards said second end of said blast tunnel. 4. The underground nuclear reactor of claim 3 wherein said first deflectors are vertically disposed and horizontally spaced-apart and wherein said second deflectors are vertically disposed and horizontally spaced-apart. 5. The underground nuclear reactor of claim 4 wherein each of said first and second deflectors has an angular shape. 6. The underground nuclear reactor of claim 3 wherein said first and second deflectors are comprised of a concrete material. 7. The underground nuclear reactor of claim 3 wherein said first and second deflectors are selectively removably secured to said first and second side walls of said blast tunnel respectively. 8. The underground nuclear reactor of claim 3 wherein each of said first and second deflectors have upper and lower ends with said lower ends thereof being positioned on said upper side of said bottom wall of said blast tunnel. 9. The underground nuclear reactor of claim 3 wherein each of said first and second deflectors have a leading face which is disposed at an angle with respect to the longitudinal axis of said blast tunnel. 10. The underground nuclear reactor of claim 1 wherein said containment member is comprised of a concrete material. 11. The underground nuclear reactor of claim 1 wherein said blast tunnel is comprised of a concrete material. 12. The underground nuclear reactor of claim 1 wherein said door openings are large enough to permit said nuclear reactor to pass therethrough for repair or replacement. 13. The underground nuclear reactor of claim 2 wherein said roof opening is large enough to permit said nuclear reactor to pass therethrough for repair or replacement. 14. The underground nuclear reactor of claim 1 wherein said door is selectively movable from said closed position to said open position. 15. An in-ground nuclear power reactor, comprising:a containment member having a wall, a bottom wall, a first end wall, a second end wall, a first side wall, a second side wall, an upper wall and an interior compartment;a nuclear reactor positioned in said interior compartment of said containment member;said second end wall of said containment member having a door opening formed therein;a hollow blast tunnel having a first end wall, a second end wall, a first side wall having inner and outer sides, a second side wall having inner and outer sides, a bottom wall, an upper wall and a blast mitigation chamber;said first end wall of said blast tunnel having a door opening formed which communicates with said door opening in said second end wall of said containment member;a door movably positioned in said door openings; andsaid door being normally closed but being movable to an open position upon a predetermined blast force being exerted thereon should the nuclear reactor explode whereby debris from said exploded nuclear reactor will pass through said door openings into said blast mitigation chamber. 16. The in-ground nuclear power reactor of claim 15 wherein a plurality of spaced-apart first deflectors are mounted on said inner side of said first side wall of said blast tunnel and wherein a plurality of spaced-apart second deflectors are mounted on said inner side of said second side wall of said blast tunnel. 17. The in-ground nuclear power reactor of claim 16 wherein said second deflectors are off-set with respect to said first deflectors. 18. The in-ground nuclear power reactor of claim 16 wherein said first and second deflectors are selectively removably secured to said inner sides of said first and second side walls of said blast tunnel. 19. The in-ground nuclear power reactor of claim 15 wherein said upper wall of said blast tunnel has an opening formed therein which is selectively closed by a roof portion. 20. The in-ground nuclear power reactor of claim 15 wherein said door openings are large enough to permit said nuclear reactor to pass therethrough. 21. The in-ground nuclear power reactor of claim 19 wherein said opening in said upper wall of said blast tunnel is large enough to permit said nuclear reactor to pass therethrough.