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! ANP PROJECT PROGRESS REPORT 0.020 in. To minimize backlash and to prevent instrument pinion run-off (with attendant loss of synchronization), both the synchros and the poten- tiometers will be driven by a fine-pitch rack 1 in. longer than the power-transmi tting rack. Two plunger-sealed limit switches, which will operate through the motor control circuits, will be used to prevent rod overtravel at each end of the stroke, and one limit switch will be used for giving a 1% Ak/k reserve indication for filling operations. The drive mechanism, which will be canned, will be operated under a 15psi helium pressure. The helium consumption will be limited to that lost in periodic venting of the container. INSTRUMENT DEVELOPMENT R. G. Affel Thermocouple Data Reduction J. T. DeLorenzo W. R. Miller Equipment suitable for transmitting 100 therrno- couple signals on two conductors has been as- sembled and tested. As the simplified block diagram shows (Fig. 1.3.1), the input signals are -42 1800-rpm MOTOR MERCURY JET SWITCH NO.! scanned by a high-speed mercury-jet switch. This switch is actually a centrifugal pump, driven by a motor, which directs a fine stream of mercury at adjacent pins to complete a circuit. Synchronism between the two switches is assured by driving them with synchronous motors that operate from the same power source. Such a system offers several advantages. For example, a large number of temperatures may be scanned, visually, on one large, 17-in.-screen oscilloscope; alarm or monitoring systems that scan several hundred readings a second are possible (available systems are limited to 1 point/sec or slower); temperature gradients or profiles on- equipment may be directly displayed; essentially all time lag in the system lies in the sensor, and therefore transient studies are limited only by the sensors; commercial null- balance potentiometric recorders can be used with such a system. The equipment being tested scans data at the rate of 2500 pointdsec. Conventional, Brown, multipoint, stripchart recorders have been modified to operate on the switch output, which is 30 pulses/sec, with each pulse 200 psec in duration. 1800-rpm MOTOR i MERCURY JET SWITCH N0.2 Fig. 1.3.1. Thermocouple Data Transmitting and Recording Apparatus. UNCLASSIFI€O ORNL-LR-DWG 14951 RECORDERS IN .
hd - Thus, even with an input signal only 0.006% of the time, the available, conventional equipment may be used in an integrated alarm or monitoring system. Cell Bulkhead Penetrations J. T. DeLonnro Fittings suitable for reactor cell penetrations for heater wiring, control wiring, chamber leads, and thermocouples have been examined. Preliminary specifications and drawings have been prepared for review, and a contract is to be negotiated with a vendor. Fuel-Expansion-Tank Level Indicator R. F. Hyland Tests are under way to determine the practica- bility of using a helium bubbler to obtain a con- tinuous fuel-level indication in the ART fuel- expansion tank in the temperature- range 1100 to 1500°F with a varying pressure above the fuel. The tests were designed so that information could be obtained on whether the bubbler tubes would become clogged with fuel or ZrF, vapor deposits, to determine the minimum helium flow that would provide an accurate level measurement, to study the effect of changes in bubbling tote on the accuracy of measurement, to learn the response of the system to pressure surges, 5nd to ascertain the accuracy of measurement. The test apparatus consists of a conventional purge system that utilizes a constant-differential relay and purgemeter to obtain constant flow and a pneumatic differential-pressure transmitter. One side of the pressure transmitter is tapped off the purge line, and the other s the apparatus, was k2% in the level range being measured. However, on fuel runs, errors of as PERIOD ENDING JUNE IO, 1956 large as 0.43 in. of fuel in 5 in. (8.6%) and as small as 0.12 in. in 5 in. (2.4%) were noted. The average error appears to be of the order of f5%. This error can probably be accounted for by the fuel-density change with temperature, which is known to an accuracy of only f5%, difficulties in the precise placement of the bubbler tube and the spark plug, and the slight inaccuracy resulting from the use of a spark-plug probe to indicate the fuel level in the vessel. It was found that a purge flow rate as small as 0.2 scfh of helium would yield consistent flow measurements, but the system response to pressure surges at this purge rate was sluggish. Purge rates of the order of 1.5 scfh (“1000 liters/day) of helium gave both consistent level measurements and fairly rapid system response to pressure surges. There is no observable change in level indication for any purge flow rate between 0.2 and 1.5 scfh. On the basis of 1850 hr of operation of the apparatus in one run, it appears to be practical to measure fuel level at a fuel temperature of llSO°F by the helium-bubble method on a static system. There has not yet been a sufficient number of hours of a 1500°F test to evaluate the results of level indication at this higher temperature. High-Temperature Pressure Transmitierr W. R. Miller Pressure transmitters manufactured by four different vendors have been evaluated in tests in the temperature range 1000 to 14OOOF. Three of the four units tested operated similarly. They were of the force-balance type that requires an external gas supply to maintain a zero pressure differential ross a bellows or diaphragm. The fourth unit ilites a diaphragm-isolated, NaK-filled tube tern in which the NaK hydrostatically transmits applied pressure to an external, low-temperature, displacement-type transducer. The tube-system und to have 0.6% or better, average on other types of pressure transmitters, g electrically operated devices. A h igh-temperature turbine-ty pe flowmeter has been developed for measuring flow in fused-salt 43
Page 3 and 4: Part 1 AIRCRAFT REACTOR ENGINEERING
Page 5 and 6: STATUS OF ART DESIGN Design work on
Page 7 and 8: of pressure loads. The idealized mo
Page 9 and 10: UPPER DECK 7 @ PRESSURE SHEL PERIOD
Page 11 and 12: SOD,UM r--- INCONEL TANK ROOF 0 0.5
Page 13 and 14: TABLE 1.1.1. NaK PUMP SPEEDS AND HO
Page 15 and 16: 62 CALCULATED HEATING (w/crn3) N w
Page 17 and 18: where I = radius of source (taken a
Page 19 and 20: heat exchanger was used. The heatin
Page 21 and 22: head which are bounded by various t
Page 23 and 24: h bd * W - EcBRc+ ORNL-LR-DWG I4918
Page 25 and 26: PERIOD ENDlNC JUNE 10. 1956 TABLE 1
Page 27: ENRICHER ACTUATOR J. M. Eastman Spe
Page 31 and 32: - . 140 120 p 100 g d 80 8 L s In y
Page 33 and 34: and lose their hardness in the pres
Page 35 and 36: p. W 2.5 0.5 0 400 OPERATING TIME (
Page 37 and 38: i 20 too 80 40 20 PERIOD ENDING JUN
Page 39 and 40: c' I - + r 500 450 400 3 50 300 2 2
Page 41 and 42: 01) 0V3H 5: N 0 2 s 0 0 0 5: 0 2 s
Page 43 and 44: the first 200OF and B0F/sec for the
Page 45 and 46: PERIOD ENDING JUNE 10, 1956 TABLE 1
Page 47 and 48: L 0 _, I, -* t; - PERIOD ENDING JUN
Page 49 and 50: LJ 0.005 in. on the diameter and a
Page 51 and 52: I 3 -I W CALROD HEATER 1500 I 1400
Page 53 and 54: -17 Inconel I .._I_ I" .. _ _ ~ ._
Page 55 and 56: i E ART FACILITY F. R. McQuilkin Co
Page 57 and 58: L7i PERIOD ENDING JUNE 10, 1956 Fig
Page 59 and 60: PERIOD ENDING JUNE 10, 1956 Fig. 1.
Page 61 and 62: ART OPERATING MANUAL W. B. Cottrell
Page 63 and 64: Part 2 CHEMISTRY W. R. Grimes
Page 65 and 66: W 2.1. PHASE EQUILIBRIUM STUDIES' C
Page 67 and 68: - 0 Q 3 G 4000 900 800 700 a w a 5
Page 69 and 70: - a t a w 1000 900 000 - P 700 3 2
Page 71 and 72: - 0 e 4 000 900 800 5 700 I- a a W
Page 73 and 74: ZrF4 9t2 PERIOD ENDING JUNE 10, 795
Page 75 and 76: U c * NaF*BeF2-2NaF*BeF2 triangle c
Page 77 and 78: THE SYSTEM MgF2-CaF2 L. M. Bratcher
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2.2. CHEMICAL REACTIONS IN MOLTEN S
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I id PERIOD ENDING JUNE 10, 1956 an
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PERIOD ENDlNG JUNE 10, 1956 V which
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u the salt-metal interface, and the
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of this reaction will be made at th
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+- + z 6 e 6 5 3 3 > k i m 3 2 2 1
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FeF,. The FeF, saturation points we
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UNIF, = yN should be unity (a pure
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Although it appears that the solubi
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, . 2.3. PHYSICAL PROPERTIES OF MOL
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-0 a rn u) u) DO2 oot c ;o rn OS g
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IL, - PERIOD ENDING JUNE 70, 7956 O
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8 00 700 600 - 0 0, w 500 a 3 I- U
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supporting plaque is loaded into th
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u 2.4. PRODUCTION OF FUELS c G. J.
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half of fiscal year 1957. This esti
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2.5. COMPATIBILITY OF MATERIALS AT
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volume of 1 M tartaric acid solutio
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After the trap has been opened, bot
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\ Part 3 METALLURGY W. D. Manly
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FLUORIDE FUEL MIXTURES IN INCONEL F
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PERIOD ENDING JUNE 10, 1956 TABLE 3
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Fig.3.1.3. Region of Maximum Attack
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(d . terminated after 1217 and 1339
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- . LJ BRAZING ALLOYS IN LIQUID MET
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PERIOD ENDING JUNE 10, 1956 NaK wer
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I PERIOD ENDING JUNE 10, 1956 I Fig
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0. PERIOD ENDING JUNE 10, 1956 Fig.
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Fig. 3.2.10. Apparatus for Studying
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STATIC TESTS OF INCONEL CASTINGS R.
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t (JnOOSll 3n918-3NOt IOH (JoOOSI)
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after the l00hr test. The extent of
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tests of the Lindsay Mix specimens,
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LJ DEVELOPMENT OF NICKEL-MOLYBDENUM
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LJ PERIOD ENDING JUNE 10, 1956 Fig.
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2. Canning of the billets with '/,-
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165 . c, e . c3 a PERIOD ENDING JUN
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u allow the billet to start through
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NEUTRON SHIELD MATERIAL FOR HIGH-TE
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PERIOD ENDfNG JUNE 10, 7956 Fig. 3.
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wrought plate used as base material
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J point. A mixture of 50-50 vol % L
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WELDING PROCEDURE: VERTICAL FIXED,
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4 2 t 4 2 in. t 2 WCLASSFKO ORNL-LR
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FABRICATION OF JOINTS BETWEEN PUMP
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* h WELDING PROCEDURE PERlOD ENDING
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1 1 6 in. PUMP BARREL t SECTION AA
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'4 x 6 x 20-in. INCONEL PLATES (/*-
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UNCLASSIFIED PHOTO 17248 Fig. 3.4.1
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through the radiator by passing col
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L, . 1 Q t V ERIOD ENDING JUNE 10,
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to permit the examination of indivi
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LJ . t L t * I LJ Fig. 3.4.33. Tube
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Fig. 3.4.37. Inner Surface of Tube
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EFFECTOF ENVIRONMENTONCREEP- RUPTUR
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PERIOD ENDING JUNE 10, 1956 UNCLASS
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Fig. 35.7. Surface Effect on the St
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44,000 42,000 40,000 - ._ (D 8000 v
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\:r 1 U UNCL 1158 W ioo,ooo 80,000
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fuel mixture (No. 30) NaF-ZrF -UF,
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i u * ‘*$ , .\. The Lindsay Chemi
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6, * c L . c e 4 gi depths greater
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i 4 Part 4 HEAT TRANSFER AND PHYSIC
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4.1. HEAT TRANSFER AND PHYSICAL PRO
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This relationship gives the ratio o
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The parameters of the’experiment
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t Fig. 4.1.7. Fuel Annulus of the V
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uncooled wall temperature that woul
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SHIELD MOCKUP REACTOR STUDY L. C. P
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Liquid (688 to 8986C) I . HT - H3Q
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THERMAL CONDUCTIVITY W. D. Powers T
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cd Fig.4.2.4. Slingers from MTR In-
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a plug when they came in contact wi
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couples were used on this loop to e
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0 20 40 60 80 lo0 I20 440 (60 180 2
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"fast" neutron in a graphite reacto
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eached thermal equilibrium in an in
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0.5 0.4 - a3 l- W z 0.2 0.1 UNCLASS
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TABLE 4.2.3. RESULTS OF EXAMINATION
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U could be evacuated was used for t
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! j * . x - iu I PERlOD ENDlNG JUNE
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CRITICAL EXPERIMENTS FOR THE COMPAC
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. I) a W PERIOD ENDING JUNE 10, 195
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U I I R i c . --. in. long, 18’4,
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I, . R t 3 4 . C 7 6 5 W 5 a c3 E4
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1 a
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ANP PROJECT PROGRESS REPORT ot(E) =
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ANP PROJECT PROGRESS REPORT TABLE 5
Page 256 and 257:
ANP PROJECT PROGRESS REPORT TABLE 5
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6 ANP PROJECT PROGRESS REPORT 2 lo7
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ANP PROJECT PROGRESS REPORT GAMMA-R
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ANP PROJECT PROGRESS REPORT 5.3.3,
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ANP PROJECT PROGRESS REPORT A I P I
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ANP PROJECT PROGRESS REPORT SECTION
Page 268 and 269:
ANP PROJECT PROGRESS REPORT .. .._
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