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- 0 0.44 0.40 0.36 0.32 .- + z 0.28 2 0 a LL 0 0.24 z 0.20 a + 0.16 W 3 0.4 2 0.08 0.04 ORNL-DWG 67-31830 - 1 I r- ---T INlTlAl SAMPI F WEIGHT io8789 g I I / I A' n - 0 4 2 3 4 5 6 7 SQUARE ROOT OF REACTION TIME (hr? Fig. 13.8. Reaction of BF3 with Chromium Metol at 650°C. CrF, * CrF,, were identified by petrographic tech- niques. The material is currently being chemically analyzed for boron. Although these results are inconclusive with respect to identification of the oxidation species in the gas phase, they do illustrate that the direct use of chemically pure, commercially available HF3 in high-temperature systems will promote the oxidation of nearly pure chromium. Further studies will evaluate the effects of 3F3 concentrations on oxidation rates and will investigate methods for improving the purity of BF3. 13.5 COMPATlBlLlTY OF BF, WITH GULFSPIN-35 PUMP OIL AT 150°F F. A. Doss P. G. Smith J. €1. Shaffer The proposed use of a fluoroborate mixture as the secondary coolant in the MSRE will require that a covering atmosphere containing BF be maintained above the salt in the pump bowl. Since 3F3 is 8 164 known to catalyze the polymerization of certain organic materials, its effect on the lubricating properties of the pump oil needs evaluation. Although these effects will be observed directly during the planned operation of the PKP-1 loop with a fluoroborate salt mixture, a pieliminary experiment is in progress to determine relative polymerization rates of Gulfspin-35 oil under conditions which can be related to actual pump operations. The degree of polymerization should be indicated by measured changes in oil viscosity during the experiment. MSRE-type pumps use a helium purge down the pump shaft to isolate the luhricated parts of the pump assembly from the gas environment of the pump bowl. Previous tests on the prototype pump loop, using 85Kr as an indicator, showed that this isolation technique reduced the concentration of pump bowl gases at the oil-gas interface to about 1 part in 20,000.* Accordingly, this current study provides accelerated test conditions by contacting the pump oil with helium containing about 1000 ppm of BF3 at a maximum operating temperature of 150OF. Two experimental assemblies have been operated concurrently to provide comparative data. In each assembly, helium was bubbled at a rate of about 1 liter/min through 1.5 liters of pimp oil. The BF, was introduced into the helium influent stream to one experiment at a rate of about 1 cc/min. Samples of the oil were drained from each experiment periodically and submitted to the Analytical Cheniistry Division for viscosity measurements. As described in a later section, a continuous gas analysis system was installed and calibrated by A. S. Meyer, Jr., and C. M. Boyd of the Analytical Chemistry Division. Concentrations of BF, in the gas influent and effluent of the experiment are recorded from the output signal of a thermal conductivity cell. The light hydrocarbon content (pioducts of oil polymerization) of the gas effluent can also he monitored on a semicontinuous basis. The results obtained through approximately 600 hr of continuous operation of the experiments are illustrated in Fig. 13.9. Although some discoloration of the oil exposed to BF, was noted, there is no distinguishable difference in oil viscosity between comparative samples. The increase in oil viscosity (original value, 15.7 centistokes) during 'A. G. Grindell and P. G. Smlth, MSR Program Semi- ann. Propr. Rept. July 31, 1964, ORNL-3708, p. 155.
:> I I a -~ ............ +-. VOl.lJMF: OF OIL IN EACH EXPERIMENT: 1.5 liters. ... - GAS FLOW RATE IN EACIi EXF'EII1MENT:l liter/rnin. 165 OR N I_.- D'NG 67- 1 - IO31 ..... I VI 25 T ~ - I ', 0-OIL CONT'ACTED WITH YF3 (-,IO00 ppm) IN HEL.IUM. a -OIL CONTACTED Wl-rH HELIUM ALONE. 0 100 200 300 400 500 600 7Q0 CONTACT TIME (hr) Fig. 13.9. Effect of BF, on Viscosity of MSRE Pump Oil (Gulfspin-35) at 15OoF. the experiment is no more than 0.3 centistoke at 25OC. Concentrations of 13F3 in he gas effluent have remained essentially the same as influent concentrations throughout the experiment. IIydro- carbon concentrations in the gas effluent were insignificantly low. On the basis of these results, the introduction of BF3 as a covering atmosphere in MSRE-type pump bowls should have negligible effects on this lubricating property of the pump oil. The experiment will be continued to examine long-term effects of BF3 on the pump oil.
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c c c Contract No. W-.740 5-eng- 26
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, INTRODUCTION ....................
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7 . SYSTEMS AND COMPONENTS DEVELOPM
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. 15.7 Oxygen Analysis ............
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i The objective of the Molten-Salt
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PART 1. MOLTEN-SALT REACTOR EXPERIM
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PART 2. MSBR DESlGN AND DEVELOPMENT
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especially when the system is stabi
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generated species in molten fluorid
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cold leg. The second loop, of Naste
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Part 1. Molten-Salt Reactor Experim
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was at full power continuously exce
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Analysis and details of operations
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1.2 REACTlVlTY BALANCE J. R. Engel
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alance results during this time sho
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II_- - 23 Table 1.2. MSRE Cumulotiv
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4 2 5 10 20 transient that followed
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27 Fig. 1.13. Motor of Reactor Cell
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personnel access to the area where
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accumulation rate at present indica
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The retrieval of the sample latch w
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The moisture condensed from the cel
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MSRE, details of some of the equipm
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39 Fig. 2.2. General View of Latch
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c 41 Table 2.1. Radiation Levels Fo
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significantly, indicating clearly t
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2.5 PUMPS P. G. Smith A. G. Grindel
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3.1 MSRE OPERATING EXPE RI ENCE C.
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The rate-of-fill interlocks, includ
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16 15 44 (3 42 I1 9 51 LLETHARGY 8
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shown as solid points in Fig. 4.1 (
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These are the results of two-dimens
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. r. ~ ~ ~ Fig. 4.8. Axiol Distribu
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. 59 Fig. 4.10. Axial Distribution
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- 12 0.0 $ 04 Lo ... z ? I- ;s -04
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Part 2. MSBR Design and Development
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ather than just the core and to pro
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A . 9.
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0 2 4 6810 LLLLLLU 1 INCHES COOLING
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however, electric heaters are provi
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I 43ft 3in REACTOR ’ t 40in. ! 3i
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of machining or close tolerances. T
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GASCONN I GAS SKIRT 4ft 8in. OD 19f
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271 TIRES 2%. A PITCH L- STEAM (la
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6.1 MSBR PHYSICS ANALYSIS 0. L. Smi
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4 V S; 0.06 v F 2.25 2.24 2.23 2.22
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0 8 6 4 7- 4=H20 SPECTRUM 2=D20 SPE
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chief indicators of performance. Th
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Work related to the Molten-Salt Bre
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I- 92 -Clt NO ClRCUl ATING BUBBLES
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L- a w r 94 ORNL-OWG 67-(1815 io‘
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about 500 mm Hg at the test operati
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1 I 1 I 1 98 MOTOR COUPLING dWER BE
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head and flow characteristics of th
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The chemical research and developme
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0 'i! m 0 w m d m w 0 W m 9 4 w lx
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Sample Nc. F312-10 FPi2-1: FP12-12
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~. 108 Table 8.2. Chemical Analyses
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tenfold or more as a consequence of
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mechanism is available which satisf
Page 124 and 125: An additional purpose of sampling w
Page 126 and 127: 9. Fission Product Behavior in the
Page 128 and 129: een stripped is more nearly 50% of
Page 130 and 131: E > 0 12.0
Page 132 and 133: (014 5 2 4 o~~ 40" 5 2 5 - BLANK -~
Page 134 and 135: loi3 5 2 40’2 E : 5 m L al a 0) i
Page 136 and 137: 126 Table 9.4, Fission Product Depo
Page 138 and 139: Table 9.7- Approximate Fission Prod
Page 140 and 141: (e.g., in metallic colloidal aggreg
Page 142 and 143: SAMPLES in. DlAM X t'46 in. ,,/NOR-
Page 144 and 145: c( 0 c c 0 134
Page 146 and 147: 10.1 OXIDE CHEMISTRY OF ThF,-UF, ME
Page 148 and 149: BeF, in 2LiF 13eF,, this partial pr
Page 150 and 151: (up to one week) the transparency o
Page 152 and 153: The appearance in appreciable conce
Page 154 and 155: MoF3 e h l o .... ~~ .... Mo t MoF,
Page 156 and 157: i observed peak heights for Mo 2F9
Page 158 and 159: 12.1 EXTRACT] ROTACTlNlUM FROM ever
Page 160 and 161: 2 a STATIC -~ -0 AGITATED A AVERAGE
Page 162 and 163: to the end of the nickel anode. A m
Page 164 and 165: centration (97% removed). The distr
Page 166 and 167: point marked with a cross is the va
Page 168 and 169: 13. FB u orate 13.1 PHASE RELATIONS
Page 170 and 171: THERMOCOUPI-F FURNACE I TO VACUUM O
Page 172 and 173: Cr Metal Hastelloy N Fe Mo ~ 162 Ta
Page 176 and 177: . Development and E aluation of for
Page 178 and 179: Sample No. M Wil 1 FP-9-4 FP-10-25
Page 180 and 181: LJ !+€AD POT I I I I I I I I 1 I
Page 182 and 183: This uranium species disappeared sl
Page 184 and 185: 174 BI I - CARRIER - ...... -+ SAMP
Page 186 and 187: olten- I rr Molten-salt breeder rea
Page 188 and 189: I COLD LEG RETURN LIN 178 CORE OUTL
Page 190 and 191: March 17 following the fission prod
Page 192 and 193: Table 15.3. Comparison of Values fo
Page 194 and 195: likely cause of failure is the rapi
Page 196 and 197: 186 Fig. 15.6. Inner Surfoce of Col
Page 198 and 199: 188 Fig. 15.8. Inner Surface of Cor
Page 200 and 201: on final salt samples. 'This value
Page 202 and 203: P c9 P 082 P 8'ZF P 1.11 .c OF P S0
Page 204 and 205: HFIR FUEL ELLEMENT ,EXPERIMEUT 194
Page 206 and 207: Our materials program has been conc
Page 208 and 209: 198 SPLIT STRAP SLEEVE BAND (a) S F
Page 210 and 211: others, but all three stringers in
Page 212 and 213: - Y) a - 70 60 50 40 (0 m 30 + m 20
Page 214 and 215: 204 Fig. 16.7. Photomicrographs of
Page 216: 206 Fig. 16.9. Photomicrographs of
Page 219 and 220: AXF-5QRG 4-4 4 a9g/rm3 4f 56 % ~ AX
Page 221 and 222: Carbon Corporation, Poco Graphite,
Page 223 and 224: was found. In view of the low react
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SIC TEMPERATURE STAINLESS STEEL TUB
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18.1. IMPRQVING THE RESISTANCE are
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These aging studies will be expande
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221 Fig. 18.3. Hastellay N Containi
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Fig. 18.5. Hasvellcy N (Titanium Mo
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ORWL-DWG 67-tIP39 !-in -THICK PLATE
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227 Toble 18.3. Thermal Convection
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229 ORNL-DWG 67-io980 Impurity Anal
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231 Fig. 18.16. Hastelloy N Thermal
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time what the effective diffusiviti
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Figure 18.20 shows an area near the
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The third design, which is also a d
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Part 6. Molten-Salt Processing and
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that the behavior of the rare-earth
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22. Distillation of MSRE Fuel Carri
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23. Steady-State Fission Product Co
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sec (50 hr). These latter residence
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analysis of filtered samples and th
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25. Modifications to MSRE Fuel Proc
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nickel line through a sintered meta
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1. R. K. Adams 2. G. M. Adamson 3.
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344. E. H. Taylor 345. W. Terry 346
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