ORNL-4191 - the Molten Salt Energy Technologies Web Site

More documents

Recommendations

Info

46 pump tank. It is now available, along with a conditions. Based on our present knowledge, the spare fuel pump rotary element, for service in the nozzle attachment appears to be adequate for the MSRE. intended service. Stress Tests of Pump Tank Discharge Nozzle Attachment The stress tests of the discharge nozzle on the Mk-1 prototype pump tank3 were completed, and the tank assembly was transferred to the Metals and Ceramics Division for examination. A photograph of the experimental apparatus is shown in Fig. 2.7. Strain data were obtained under a pressure of 50 psi in the tank and a moment of 48,000 in.-lb applied to the nozzle. The measured strains were converted into stresses by use of conventional relationships. For comparison, the stresses were calculated by means of the CERL- I1 code, which is written for a nozzle attached radially to a spherical shell. The actual configuration is a nonradial nozzle attached to a cylindrical shell near the junction of the shell to a formed head. The computer code underestimated the experimentally measured pressure stresses by a factor of about 4.6 and overestimated the moment stresses by about 3.5 times. When the stresses are combined, the code-calculated stresses are higher than the measured stresses for the test MSRE Oil Pumps Two oil pumps were removed from service at the MSRE, one because of excessive vibration and the other because of an electrical short in the motor winding. The one with excessive vibration had one of two balancing disks loose on the shaft. The loose disk was reattached, and the rotor, in- cluding shaft assembly and impeller, was dy- namically balanced. This pump has been reas- sembled, has circulated oil up to 145OF, and is ready for service at the MSRE. The pump with the shorted motor winding has been rewound, reas- sembled, and is circulating oil. Oil Pump Endurance Test The oil pump endurance test4 was continued, and the pump has now run for 35,766 hr, circulating oil at 160°F and 70 gpm. 41bid., p. 66. ..
3.1 MSRE OPERATING EXPE RI ENCE C. E. Mathews J. L. Redford R. W. Tucker Instrumentation and control systems continued to perform their intended functions. Component fail- utes did not compromise safety nor cause excessive inconvenience in the reactor operation. A moderate amount of maintmance was required, as described in the sections that follow. Control System Components 3. Instruments and Controls L C. Oakes The 48-v dc relays continued to suffer damage because of heat developed in the resistors built into the operating coil circuits. Because of this problem, redesigned relays had been procured and some had been installed. After several months, some of these also showed signs of detenoration Therefore, following run 11, all 139 relays operating from the 48-v dc system were modified by re- placing the bmlt-in resistors with externally mounted resistors. This was done with the relays in place, without disconnecting control circult wiring, thus avoiding the possibility of wiring mistakes inherent in relay replacement. No trouble was experienced after the modificatlon. Component failures were as follows. The coil in a solenoid valve for the main blower 3 backflow damper developed an open circuit. The fine-position synchro on rod drive 2 developed an open circuit in the stator winding and was replaced at the shutdown in May. The fuel overflow tank level transmitter was replaced after a ground developed in the feed- back motor. The ground was subsequently found 'MSR Program Semiann. Progr. Rept. Feb. 28, 19G7, ORNL-4119, p. 71. 47 and corrected. The span and zero settings of the differential pressure transmitter (PdT-556) acmss the main charcoal beds shifted drastically. Al- though the pressure capability had never been ex- ceeded, the diaphragm had apparently suffered damage. Thus, when a new transmitter was installed in June, hand valves were installed in the lines connecting to the off-gas system to be used in protecting against unusual pressures during system operations. The 1-kw 48-v-dc-to-120-v-ac inverter, which supplics ac power to one of the three safety channels, failed during switching of the 48-v dc supply. It was repaired by replactrnent of two power transistors. Only one thermocouple (YE-FP-10B) failed due to an open circuit. (See p. 22 for discussion of thermocouple performance.) Water was admitted to the steam dame on fuel drain tank 1 on several occasions before the cause was found to be an intermittent fault in a control module. A freeze-flange temperature control module failed because of excessive condenser leakage. At the next shutdown, all similar condensers were checked, and 33 were replaced because of leakage. Nuclear Instruments Four of the eight neutron chambers had to be replaced. The fission chamber for wide-range counting channel 1 was replaced because of a short circuit from thc high-voltage lead to ground. The fission chamber for wide-range counting channel 2 was replaced after moisture penetrated the protec- tive cover on the cable. Moistute Leakage into the cable to the BF, chamber required that the cable and chamber be replaced. The output of the ion. chamber in safety channel 2 decreased drastically during a nonoperating period, and the chamber was replaced prior to resumption of operatlons. The
Page 3 and 4:
c c c Contract No. W-.740 5-eng- 26
Page 5 and 6: , INTRODUCTION ....................
Page 7 and 8: 7 . SYSTEMS AND COMPONENTS DEVELOPM
Page 9 and 10: . 15.7 Oxygen Analysis ............
Page 11 and 12: i The objective of the Molten-Salt
Page 13 and 14: PART 1. MOLTEN-SALT REACTOR EXPERIM
Page 15 and 16: PART 2. MSBR DESlGN AND DEVELOPMENT
Page 17 and 18: especially when the system is stabi
Page 19 and 20: generated species in molten fluorid
Page 21 and 22: cold leg. The second loop, of Naste
Page 23 and 24: Part 1. Molten-Salt Reactor Experim
Page 25 and 26: was at full power continuously exce
Page 27 and 28: Analysis and details of operations
Page 29 and 30: 1.2 REACTlVlTY BALANCE J. R. Engel
Page 31 and 32: alance results during this time sho
Page 33 and 34: 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: 2.5 PUMPS P. G. Smith A. G. Grindel
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 86 and 87: of machining or close tolerances. T
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
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 174 and 175:
- 0 0.44 0.40 0.36 0.32 .- + z 0.28
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
Page 225 and 226:
SIC TEMPERATURE STAINLESS STEEL TUB
Page 227 and 228:
18.1. IMPRQVING THE RESISTANCE are
Page 229 and 230:
These aging studies will be expande
Page 231 and 232:
221 Fig. 18.3. Hastellay N Containi
Page 233 and 234:
Fig. 18.5. Hasvellcy N (Titanium Mo
Page 235 and 236:
ORWL-DWG 67-tIP39 !-in -THICK PLATE
Page 237 and 238:
227 Toble 18.3. Thermal Convection
Page 239 and 240:
229 ORNL-DWG 67-io980 Impurity Anal
Page 241 and 242:
231 Fig. 18.16. Hastelloy N Thermal
Page 243 and 244:
time what the effective diffusiviti
Page 245 and 246:
Figure 18.20 shows an area near the
Page 247 and 248:
The third design, which is also a d
Page 249 and 250:
Part 6. Molten-Salt Processing and
Page 251 and 252:
that the behavior of the rare-earth
Page 253 and 254:
22. Distillation of MSRE Fuel Carri
Page 255 and 256:
23. Steady-State Fission Product Co
Page 257 and 258:
sec (50 hr). These latter residence
Page 259 and 260:
analysis of filtered samples and th
Page 261 and 262:
25. Modifications to MSRE Fuel Proc
Page 263:
nickel line through a sintered meta
Page 267 and 268:
1. R. K. Adams 2. G. M. Adamson 3.
Page 269 and 270:
344. E. H. Taylor 345. W. Terry 346
show all

ORNL-4191 - the Molten Salt Energy Technologies Web Site

Create successful ePaper yourself

Delete template?

Save as template?