Sizing of Zircaloy structurals (LWBR Development Program)

Technical Report · Wed Feb 01 04:00:00 EST 1967

OSTI ID:6720613

Suldan, J H; Krahn, R J

Experiments in sizing large tubular Zircaloy structurals for nuclear core application by thermal, explosive, and cold hydraulic sizing techniques reveal that thermal sizing is the most suitable process of the three in achieving the required tight diametral and boundary surface tolerances. With cylindrical tubes up to 11/sup 1///sub 2/ inches in diameter by 103 inches long and wall thicknesses of 0.062 inch, tolerances which can be met consistently around any desired nominal diameter are +- 0.020 and plus 0.025 inch for the diametral tolerance and boundary diameter, respectively. As a result of strain-rate sensitivity of Zircaloy and limitations placed on the amount of elongation permitted which precluded removal of ovality, experiments in explosive sizing were discounted. Cold hydraulic sizing experiments were discontinued because of the dimensional instability of the sized component under subsequent thermal cycling. (NSA 21: 18234)

• Research Organization: Bettis Atomic Power Lab., Pittsburgh, PA (USA)
• DOE Contract Number: AT(11-1)-GEN-14
• OSTI ID: 6720613
• Report Number(s): WAPD-TM-620
• Country of Publication: United States
• Language: English

Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
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ALLOYS
BREEDER REACTORS
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MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICAL TESTS
REACTOR COMPONENTS
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THERMAL REACTORS
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