ORNL-1771 - Oak Ridge National Laboratory

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PERIOD ENDING SEPTEMBER JO, 1954 Fig. 2.5. Inside Surface of lnconel Sleeve Enclosing Beryllium Insert Exposed in Whirligig Test to Sodium for 300 hr at 1300°F. Etched with glyceria regia. 1OOOX. TABLE 2.8. EFFECT OF CIRCULATING SODIUM AT VARIOUS TEMPERATURES FOR 500 hr IN INCONEL THERMAL-CONVECTION LOOPS WITH BERYLLIUM SPECIMENS IN THE HOT LEGS . .... ...... Tempera tu re ...... _____ ..... -~ ......... Metallographic Examination . ~ . (OF) Beryllium Specimen lnconel Hot Leg ...... _ ............... ___ __ ............ ____ __ 1500 Outside surface of insert showed holes to a depth Deposit opposite the beryllium of 14 mils; inside surface slightly rough insert 1300 Intergranular penetrations to a depth of 2 mils on No attack or deposii outside surface; no attack on inside surface 1100 No layer or attack No attack or deposit 9 00 No layer or attack No attack or deposit - __ ..................................... - ................ ___ .. results reported in Table 2.8 are from tests operated for 500 hr. Other loops are now in operation that will be run for longer periods. ....... in the hot leg of the loop operated at 1500°F. The deposit material has not yet been identified by spectrographic or diffraction studies. The deposit Photomicrographs of the outsides of the be- found on the lnconel opposite the beryllium insert ryllium inserts are shown in Fig. 2.7. Black, in the loop operated at 1500°F is shown in Fig. flaky material was found in the cold legs of the 2,8; it has been identified as a nickel-beryllium loops operated at 1100, 1300, and 1500°F and alloy. 31
ANP QUARTERLY PROGRESS REPORT .- - . 'D -0 . 3 Fig. 2~5" Beryllium Specimen After hirligig Test for 30 hr at 130OoF. (a) Surface exposed to flowing sodium. (b) Surface exposed to relatively stagnunt sodium in the annular space between the specimen and the lnconel sleeve. Etched with oxalic acid. 250X. Mass f:ansfer in FQrced.&irculacion-8oop Tests 1. A. Mann Airsraft Reactor Engineering Division F. A. Anders~n~~ University of Mississippi A test unit12 for investigating mass transfer of beryllium to Inconel in flowing sodium was operated for 1006 hr under conditions nearly the same os those proposed for the reflector-moderated reactor. The approximate conditions of operation, with minor fluctuations, were as follows: sodium flow rate, 3 gpm; beryllium temperature, 1200°F; nlcsximu~li temperature, 1245" F (sodium entering economizer); minimum flowing sodium temperature, 900" F (re-entering economizer from cooling sec- tion); Reynolds number at minor diameter (0.25 in.) "Summer Research Purticipont. 12L. A. Mann, ANP Q~ACZT. Prog. Rep. June 10, 1954, <strong>ORNL</strong>-1729, p 22. 3% of beryllium insert, 155,000; minimum Reynolds number (at coldest point in economizer annulus), 61,000. Upon termination of the test, the unit was cooled rapidly to room temperature to freeze the sodium. Samples of. both the sodium and the Inconel were then taken from each of 24 locations in the unit. The sodium samples were analyzed chemically for beryllium, and none was found. Metallurgical examination of the beryllium piece and the Inconel samples indicated that the beryl I ium-lnconel- sodium system should give no trouble from cor- rosion or mrlss transfer under the conditions presently proposed for the reflector-moderated reactor (temperature not over 1200" F, Reynolds number not over 150,000). The above-described test unit was essentially duplicated, and a second test w0s started with maximum and minimtim temperatures in the flowing sodiurii of 1300'F (ut the beryllium) and 1000°F, respectively. A powe: failure terminated this test
Page 2 and 3: Contract No. W-7405-eng-26 AIRCRAFT
Page 4 and 5: 1. G. M. Adamson 2. R. G. Affel 3.
Page 6 and 7: 197-198. Powerplant Laboratory (WAD
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zirconium or aluminum complex, or l
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11. SHIELDING ANALYSIS J. E. Faulkn
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form in terms of the Spence functio
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these integral 5 become Let and the
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PERIOD ENDING SEPTEMBER IO, 7954 Al
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0 20 40 60 80 IO0 120 140 160 I, Di
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... Two configurations, a single du
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The thermal-neutron flux (Fig. 13.2
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TIME (rnin) PERIOD ENDING SEPTEMBER
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PERIOD ENDING SEPTEMBER 10, 1954 Fi
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part IV APPENDIX
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REPORT NO. ~~-54-a-10 C F-54-6-4 CF
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