Patent Number: 
Section: claims

1. A removable rail assembly for a spent fuel handling machine, comprising: a shim plate;  a support rail coupled to the shim plate for adjusting the height level of the support rail;  a removable rail guide carried by the support rail, said rail guide having a first end and a second end;  a first rail joint connector supported by the rail guide for coupling the rail guide first end to a first adjacent fixed rail, the joint connector including a tongue and groove joint with a tapered parting line; and  at least one jacking screw supported by the support rail and extending through the shim plate for lifting the support rail. 2. The removable rail assembly as defined in  claim 1 , wherein the tongue portion of the tongue and groove joint is supported by the removable rail guide. claim 1 3. The removable rail assembly as defined in  claim 1 , wherein the ends of the removable rail guide extend beyond the support rail and are supported by a rail trench. claim 1 4. The removable rail assembly as defined in  claim 1 , wherein the first end of the removable rail guide is coupled to a first rail end support member and the second end of the removable rail guide is coupled to a second rail end support member. claim 1 5. The removable rail assembly as defined in  claim 4 , wherein the first rail end support member is a threaded rod embedded in a structure that supports the support rail. claim 4 6. The removable rail assembly as defined in  claim 1 , wherein the support rail includes an I-beam cross-section. claim 1 7. The removable rail assembly as defined in  claim 1 , wherein the support rail receives an alignment pin. claim 1 8. The removable rail assembly as defined in  claim 1 , wherein the rail support is embedded in a floor surface. claim 1 9. A removable rail assembly for a spent fuel handling machine, comprising: a. a support rail;  b. a removable rail guide carried by the support rail;  c. a rail joint connector supported by the support rail and having a tongue with a tapered parting line for coupling the removable rail guide to an adjacent fixed rail;  d. a shim plate coupled to the support rail; and  e. means supported by the support rail and extending through the shim plate for at least loosening the joint connector for lifting the support rail to facilitate removal of said support rail. 10. The removable rail assembly of  claim 1 , further comprising a second rail joint connector supported by the rail guide for coupling the rail guide second end to a second adjacent fixed rail. claim 1 11. The removable rail assembly as defined in  claim 10 , wherein the second rail joint connector is a tongue and groove joint with a tapered parting line. claim 10 12. The removable rail assembly as defined in  claim 4 , wherein the second rail end support member is a threaded rod embedded in a structure that supports the support rail. claim 4