The fabrication of a vanadium-stainless steel test section for MHD testing of insulator coatings in flowing lithium

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To test the magnetohydrodynamic (MHD) pressure drop reduction performance of candidate insulator coatings for the ITER Vanadium/Lithium Breeding Blanket, a test section comprised of a V- 4Cr-4Ti liner inside a stainless steel pipe was designed and fabricated. Theoretically, the MHD pressure drop reduction benefit resulting, from an electrically insulating coating on a vanadium- lined pipe is identical to the benefit derived from an insulated pipe fabricated of vanadium alone. A duplex test section design consisting of a V alloy liner encased in a SS pressure boundary provided protection for vanadium from atmospheric contamination during operation at high temperature and obviated ... continued below

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9 p.

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Reed, C.B.; Mattas, R.F.; Smith, D.L.; Chung, H.; Tsai, H.-C.; Morgan, G.D. et al. December 31, 1996.

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Description

To test the magnetohydrodynamic (MHD) pressure drop reduction performance of candidate insulator coatings for the ITER Vanadium/Lithium Breeding Blanket, a test section comprised of a V- 4Cr-4Ti liner inside a stainless steel pipe was designed and fabricated. Theoretically, the MHD pressure drop reduction benefit resulting, from an electrically insulating coating on a vanadium- lined pipe is identical to the benefit derived from an insulated pipe fabricated of vanadium alone. A duplex test section design consisting of a V alloy liner encased in a SS pressure boundary provided protection for vanadium from atmospheric contamination during operation at high temperature and obviated any potential problems with vanadium welding while also minimizing the amount of V alloy material required. From the MHD and insulator coating- point of view, the test section outer SS wall and inner V alloy liner can be modeled simply as a wall having a sandwich construction. Two 52.3 mm OD x 2.9 m long V-alloy tubes were fabricated by Century Tubes from 64 mm x 200 mm x 1245 mm extrusions produced by Teledyne Wah Chang. The test section`s duplex structure was subsequently fabricated at Century Tubes by drawing down a SS pipe (2 inch schedule 10) over one of the 53.2 mm diameter V tubes.

Physical Description

9 p.

Notes

INIS; OSTI as DE97000989

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  • 12. topical meeting on the technology of fusion energy, Reno, NV (United States), 16-20 Jun 1996

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  • Other: DE97000989
  • Report No.: ANL/TD/CP--89123
  • Report No.: CONF-960646--2
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 435085
  • Archival Resource Key: ark:/67531/metadc675926

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  • December 31, 1996

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  • July 25, 2015, 2:20 a.m.

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  • Dec. 16, 2015, 5:29 p.m.

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Reed, C.B.; Mattas, R.F.; Smith, D.L.; Chung, H.; Tsai, H.-C.; Morgan, G.D. et al. The fabrication of a vanadium-stainless steel test section for MHD testing of insulator coatings in flowing lithium, article, December 31, 1996; Illinois. (digital.library.unt.edu/ark:/67531/metadc675926/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.