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of machining or close tolerances. These design improvements were made possible by relaxing the restriction that the wall be thin enough to permit reduction of the permeability to the 10 -7-cn1 2/se~ range by impregnation. This requirement was eliminated because, as discussed in Part 5, there appears io be more hope for obtaining very low Permeability through a surface sealing technique, which would not be limited by wall thickness, than through impregnation, which requires thin sections. The fuel enters and leaves the reactor through separate pipes rather than by the concentric pipe arrangement employed in the previous concepts. The new design eliminates the need for the inner slip joint and also relieves the thermal stress problems that existed in certain temperature ranges. The thermal. expansion loops now shown in the salt piping add to the fuel salt volume in the system, but this is of less significance thao it would have been in the 40-w/cm3 reactor, which had only one-half the core volume. T. W. Pickel W. Terry The heat exchanger for transfering heat from the fuel salt to the coolant salt remains essentially unchanged since the last report. The exchanger is shown in Fig. 5.11, and the design data are given in Table 5.3. As mentioned previously, there has been some change in the salt headers. Design of the gas sparging system has not been completed. 5.5 BLANKET HEAT ~ X ~ ~ A ~ G ~ ~ T. W. Pickel W. Terry No major changes have been made iil the heat exchanger which transfers heat from the fertile, or blanket, salt to the coolant salt. The exchanger is shown in Fig. 5.12, and the pertinent data are listed in Table 5.4. The blanket heat exchanger has been lowered in the cell so that the pump drive shaft will be the same length as the fuel pump drive shaft and thus allow interchangeability of parts. The coolant salt piping has also been modified to replace the concentric piping formerly used. 76 Table 5.3. Fuel Heat Exchanger Specifications Number requiied per reactor module I Rate of heat transfer, Mw 52 9 Rate of heat tiansfer, Btu/hr 1.80 x io9 Shell side Hot fluid or cold fluid Entrance temperature, OF Exit temperature, OF Entrance pressure, psi Exit pressure, psi AI' across exchanger, psi Mass flow rate, lb/hr Tube side Hot fluid or cold fluid Entrance temperature, O F Exit temperature, OF Entrance pressure, psi Exit pressure, psi AP across exchanger, psi Mass flow rate, lb/hr Tube material Tube OD, in. Tube thickness, in. Tube length, tube sheet to tube sheet, ft Inner annulus Outer annulus Shell material Shell thickness, in. Shell ID, in. Tube sheet material Tube sheet thickness, in. Top outer annulus Top inner annulus Floating head Number of tubes Inner annulus Outer annulus Pitch of inner annulus tubes, in. Radial Circumferential Pitch of outer annulus tubes, in. Type of baffle Number of baffles Inner annulus Outer annulus Cold (coolant salt) 85 0 1110 198 164 31 1.68 lo7 Hot (fuel salt) 1300 1000 146 50 96 1.09 lo7 Hastelloy N 0.3 75 0.03 5 15.3 16.7 Hastelloy N 1 67 Hastelloy N 1.5 2.5 3.5 4317 3791 0.600 0.673 0.625, triangular Doughnut 4 10
23 I 2-in. DRAIN LINE 1 20 f ‘ i iftsin. -1 fft sin. + in. i i .i -,: ., . -...-.-,. . ,- il 77 - -1 ~ MOTOR ‘i - Fig. 5.11. Fuel Heat Exchanger and Pump. 250 Mw (electrical) unit. b b ORNL DWG 67 1064ZA FI APiGF
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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
Page 35 and 36: 4 2 5 10 20 transient that followed
Page 37 and 38: 27 Fig. 1.13. Motor of Reactor Cell
Page 39 and 40: personnel access to the area where
Page 41 and 42: accumulation rate at present indica
Page 43 and 44: The retrieval of the sample latch w
Page 45 and 46: The moisture condensed from the cel
Page 47 and 48: MSRE, details of some of the equipm
Page 49 and 50: 39 Fig. 2.2. General View of Latch
Page 51 and 52: c 41 Table 2.1. Radiation Levels Fo
Page 53 and 54: significantly, indicating clearly t
Page 55 and 56: 2.5 PUMPS P. G. Smith A. G. Grindel
Page 57 and 58: 3.1 MSRE OPERATING EXPE RI ENCE C.
Page 59 and 60: The rate-of-fill interlocks, includ
Page 61 and 62: 16 15 44 (3 42 I1 9 51 LLETHARGY 8
Page 63 and 64: shown as solid points in Fig. 4.1 (
Page 65 and 66: These are the results of two-dimens
Page 67 and 68: . r. ~ ~ ~ Fig. 4.8. Axiol Distribu
Page 69 and 70: . 59 Fig. 4.10. Axial Distribution
Page 71 and 72: - 12 0.0 $ 04 Lo ... z ? I- ;s -04
Page 73 and 74: Part 2. MSBR Design and Development
Page 75 and 76: ather than just the core and to pro
Page 77 and 78: A . 9.
Page 79 and 80: 0 2 4 6810 LLLLLLU 1 INCHES COOLING
Page 81 and 82: however, electric heaters are provi
Page 84 and 85: I 43ft 3in REACTOR ’ t 40in. ! 3i
Page 88 and 89: GASCONN I GAS SKIRT 4ft 8in. OD 19f
Page 90 and 91: 271 TIRES 2%. A PITCH L- STEAM (la
Page 92 and 93: 6.1 MSBR PHYSICS ANALYSIS 0. L. Smi
Page 94 and 95: 4 V S; 0.06 v F 2.25 2.24 2.23 2.22
Page 96 and 97: 0 8 6 4 7- 4=H20 SPECTRUM 2=D20 SPE
Page 98 and 99: chief indicators of performance. Th
Page 100 and 101: Work related to the Molten-Salt Bre
Page 102 and 103: I- 92 -Clt NO ClRCUl ATING BUBBLES
Page 104 and 105: L- a w r 94 ORNL-OWG 67-(1815 io‘
Page 106 and 107: about 500 mm Hg at the test operati
Page 108 and 109: 1 I 1 I 1 98 MOTOR COUPLING dWER BE
Page 110 and 111: head and flow characteristics of th
Page 112 and 113: The chemical research and developme
Page 114 and 115: 0 'i! m 0 w m d m w 0 W m 9 4 w lx
Page 116 and 117: Sample Nc. F312-10 FPi2-1: FP12-12
Page 118 and 119: ~. 108 Table 8.2. Chemical Analyses
Page 120 and 121: tenfold or more as a consequence of
Page 122 and 123: 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
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126 Table 9.4, Fission Product Depo
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Table 9.7- Approximate Fission Prod
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(e.g., in metallic colloidal aggreg
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SAMPLES in. DlAM X t'46 in. ,,/NOR-
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c( 0 c c 0 134
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10.1 OXIDE CHEMISTRY OF ThF,-UF, ME
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BeF, in 2LiF 13eF,, this partial pr
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(up to one week) the transparency o
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The appearance in appreciable conce
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MoF3 e h l o .... ~~ .... Mo t MoF,
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i observed peak heights for Mo 2F9
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12.1 EXTRACT] ROTACTlNlUM FROM ever
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2 a STATIC -~ -0 AGITATED A AVERAGE
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to the end of the nickel anode. A m
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centration (97% removed). The distr
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point marked with a cross is the va
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13. FB u orate 13.1 PHASE RELATIONS
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THERMOCOUPI-F FURNACE I TO VACUUM O
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Cr Metal Hastelloy N Fe Mo ~ 162 Ta
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- 0 0.44 0.40 0.36 0.32 .- + z 0.28
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. Development and E aluation of for
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Sample No. M Wil 1 FP-9-4 FP-10-25
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LJ !+€AD POT I I I I I I I I 1 I
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This uranium species disappeared sl
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174 BI I - CARRIER - ...... -+ SAMP
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olten- I rr Molten-salt breeder rea
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I COLD LEG RETURN LIN 178 CORE OUTL
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March 17 following the fission prod
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Table 15.3. Comparison of Values fo
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likely cause of failure is the rapi
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186 Fig. 15.6. Inner Surfoce of Col
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188 Fig. 15.8. Inner Surface of Cor
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on final salt samples. 'This value
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P c9 P 082 P 8'ZF P 1.11 .c OF P S0
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HFIR FUEL ELLEMENT ,EXPERIMEUT 194
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Our materials program has been conc
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198 SPLIT STRAP SLEEVE BAND (a) S F
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others, but all three stringers in
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- Y) a - 70 60 50 40 (0 m 30 + m 20
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204 Fig. 16.7. Photomicrographs of
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206 Fig. 16.9. Photomicrographs of
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AXF-5QRG 4-4 4 a9g/rm3 4f 56 % ~ AX
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Carbon Corporation, Poco Graphite,
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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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