Preliminary design and manufacturing feasibility study for a machined Zircaloy triangular pitch fuel rod support system (grids) (AWBA development program)
- ed.
General design features and manufacturing operations for a high precision machined Zircaloy fuel rod support grid intended for use in advanced light water prebreeder or breeder reactor designs are described. The grid system consists of a Zircaloy main body with fuel rod and guide tube cells machined using wire EDM, a separate AM-350 stainless steel insert spring which fits into a full length T-slot in each fuel rod cell, and a thin (0.025'' or 0.040'' thick) wire EDM machined Zircaloy coverplate laser welded to each side of the grid body to retain the insert springs. The fuel rods are placed in a triangular pitch array with a tight rod-to-rod spacing of 0.063 inch nominal. Two dimples are positioned at the mid-thickness of the grid (single level) with a 90/sup 0/ included angle. Data is provided on the effectiveness of the manufacturing operations chosen for grid machining and assembly.
- Research Organization:
- Bettis Atomic Power Lab. (BAPL), Pittsburgh, PA (United States)
- DOE Contract Number:
- AC11-76PN00014
- OSTI ID:
- 5238073
- Report Number(s):
- WAPD-TM-1491; ON: DE82014950; TRN: 82-013305
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
FUEL RODS
SPACERS
SUPPORTS
LWBR TYPE REACTORS
FABRICATION
PERFORMANCE TESTING
ZIRCALOY
ALLOYS
BREEDER REACTORS
FUEL ELEMENTS
MECHANICAL STRUCTURES
REACTOR COMPONENTS
REACTORS
TESTING
THERMAL REACTORS
TIN ALLOYS
WATER COOLED REACTORS
WATER MODERATED REACTORS
ZIRCONIUM ALLOYS
ZIRCONIUM BASE ALLOYS
210500* - Power Reactors
Breeding