Preliminary design and manufacturing feasibility study for a machined Zircaloy triangular pitch fuel rod support system (grids) (AWBA development program)
Description
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 900 included angle. Data is provided on the effectiveness of the manufacturing operations chosen for grid machining and assembly
Availability note (English)
MF available from INIS under the Report Number; Available from NTIS., PC A04/MF A01 as DE82014950.
Files
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Additional details
Publishing Information
- Imprint Pagination
- 75 p.
- Report number
- WAPD-TM--1491
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 14720587
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Descriptors DEI
- FABRICATION; FUEL RODS; LWBR TYPE REACTORS; PERFORMANCE TESTING; SPACERS; SUPPORTS; ZIRCALOY
- Descriptors DEC
- ALLOYS; BREEDER REACTORS; FUEL ELEMENTS; MECHANICAL STRUCTURES; REACTOR COMPONENTS; REACTORS; TESTING; THERMAL REACTORS; TIN ALLOYS; TRANSITION ELEMENT ALLOYS; WATER COOLED REACTORS; WATER MODERATED REACTORS; ZIRCONIUM ALLOYS; ZIRCONIUM BASE ALLOYS