ORNL-1771 - Oak Ridge National Laboratory

More documents

Recommendations

Info

Fig. 6.17. As-Received Hastelloy B (u) and Hot- Leg Surface of Hastelloy B Loop (b) After Circu- lating NaF-krF4-UF, (50-46-4 mole %) for 1080 hr at 15OOcF. Etched with H,Cr04 -1- HCI. 250X. Reduced 36%. Chemical analysis results now available for the Hastelloy B loop previously operated4 for 500 hr confirm the low attack rate found metallographical Sy, since neither the nickel nos the molybdenum content in the fluoride mixture increased. LITHIUM IN TYPE 316 STAINLESS STEEL E. E. Hoffman C. R. Brooks Metallurgy Division W. H. Cook C. F. Leitten Tests have recently been completed on three type 3 16 stainless steel the rma I-convect ion IOOPS - - _.. . . ~ __ .- ~ ~ G. M. Adomson, .4NP @~27. PTOg. Rep. June 20, 19j4, ORNL-1729, p 77. PERIOD ENDING SEPTEMBER 70, 7954 in which lithium was circulated. These loops were constructed of 0.840-in.-OD, 0.147-in.-wal I pipe. The hot and cold legs were 15 in. in length, and the 15-in. connecting legs were inclined at an angle of 20 deg. The welding and loading opera- tions on these loops were performed in a dry box in a purified helium atm~sphere.~ At no time during these tests was there any indication of plug fotma- tion. The operating conditions are given in Table 6.9. Macroscopic examination revealed no dif- ferences between hot- and cold-leg surfaces in loops 1 and 2. Only loop 1 has been examined completely; loops 2 and 3 hwe been sectioned and have been examined macroscopically. Loop 2 was very similar in appearance to loop 1, with no crystal deposition. Loop 3, however, revealed mass-transfer crystals attached to the cold-zone walls. These crystals did not plug the loop or noticeably affect the circulation. The crystal deposition was heaviest on the major radius of the exposed loop-bend wall in the cold zone. This loop has not yet been examined metollographically. TABLE 6.9. OPERATING CONDITIONS FOR TYPE 316 STAINLESS STEEL THERMAL-CONVECTION LOOPS Loop No. WHICH CIRCULATED LITHIUM FOR 1000 hr . .... ..__. . Hot-Zone Cold-Zone Temperature Temperature Temperature Differential (OF) (OF) (OF) 1 1490 1220 270 2 1472 1355 117 3 1301 1094 207 Loop 1, which was operated at the highest temperature and with the highest temperature differential, had no mass-transfer crystals in the cold zone, and the maximum attack in the hot zone was 1 to 2 mils (Fig. 6.18). Chemical analyses of the lithium and the amounts of crystals recovered are presented in Table 6.10. At present it is not understood why so little mass transfer occurred in loops 1 and 2, since in a11 three loops the same procedures and testing techniques were used and all were filled from the same batch of lithium. Some as yet un- discovered factor seems to have an effect on the rate of mass transfer. T-Er-Hoffman et al., Met. DIU. Serrizmn. Prog. Rep. 4Jr. 10, 1954, ORNL-1727, p 37. 99
ANP QUARTERLY PROGRESS REPORT Fig. 6.18. Hot-Leg Surface of Type 316 Thermal Convection Loop After Circulating Lithium for 1000 hr at 1490OE. Specimen nickel plated after test to protect edge. Etched with giycerio regia. FUN DAM EN TAL COR Ri9 S I0 N R E5 E ARCH G. P. Smith Metallurgy Division Mass Transfer in Liquid Lead J. V. Cothcart Metallurgy Division As previously the investigation of corrosion and mass transfer in liquid lead has indi- cated that certain alloys possess much greater resistance to mass transfer than their pure components. For example, the time required for small thermal-convection loops containing types 410 and 446 stainless steel to plug was from two to five times longer than that required far coinparable loops containing pure iron or pure chromium. It has been suggested6 that the increased resistance to mass transfer of materials such as the 400 series stainless steels might be related to a tendency towsrd the formation of intermetall ic compounds in these alloys. To test this hypothesis 6J. V. Cathcart, ANP Qua. Prog. Rep. June 10, 1954, ORNL-1729, p 79. 100 TABLE 6.10. ANALYSES OF LlTHlUM CIRCULATED IN TYPE 316 STAINLESS STEEL THERMAL- ~ ~- CO N v E CT IO Id LO O P S ~~. .~ ~ __.__~______ Components Other Than Weight of Crystals Materia I Analyzed Lithium (ppm) Removed from L ithi urn Fe Ni Cr Lithium, as-cast, 40 10 (10 before test Lithium fromloop 160 150
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
Page 8:
FOREWORD This quarterly progress re
Page 11 and 12:
PART II . MATERIALS RESEARCH 5 . CH
Page 13 and 14:
Remote Metallography ..............
Page 15 and 16:
ANP QUARTERLY PROGRE.S.5 REPORT ver
Page 17 and 18:
AMP QUARTERLY PROGRESS REPORT A dev
Page 20:
part I REACTOR THEORY, COMPONENT DE
Page 23 and 24:
AMP QUARTERLY PROGRESS REPORT After
Page 25 and 26:
ANP QUARTERLY PROGRESS REPORT the A
Page 27 and 28:
ANP QUARTERLY PROGRESS REPORT 67 g
Page 29 and 30:
ANP QUARTERLY PROGRESS REPORT appro
Page 31 and 32:
ANP QUARTERLY PROGRESS REFORT be si
Page 33 and 34:
ANP QUARTERLY PROGRESS REPORT TABLE
Page 35 and 36:
ANP QUARTERLY PROGRESS REPORT - 22
Page 37 and 38:
in the ZPU system, While this arran
Page 40 and 41:
I ORNL-LR-DWG 3092 CALCULATIONS EXT
Page 42 and 43:
Power level TABLE 2.6. COMPARISON O
Page 44 and 45:
PERIOD ENDING SEPTEMBER JO, 1954 Fi
Page 46 and 47:
I R j I Fig. 2.7. Surfaces of Beryl
Page 48 and 49:
that will permit remote, momentary
Page 50 and 51:
sump in that it must be sufficientl
Page 52 and 53:
J Fig, 3.4. Inconel Forced-Circulat
Page 54 and 55:
- PERIOD ENDING SEPTEMBER 10, 1954
Page 56 and 57:
from 18 to 31 so that tests of long
Page 58 and 59:
A A Fig. 4.1. First Reflector-Moder
Page 60 and 61:
- 40 32 c 3 24 A F! P ._r >- k > ir
Page 62 and 63: with and without 0.OZin.-thick cadm
Page 64: Part II MATERIALS RESEARCH
Page 67 and 68: ANP QUARTERLY PROGRESS REPORr propo
Page 69 and 70: ANP QUARTERLY PROGRESS REPORT appar
Page 71 and 72: ANP QUARTERLY PROGRESS REPORT urani
Page 73 and 74: ANP QUARTERLY PROGRESS REPORT seems
Page 75 and 76: ANP QUARTERLY PROGRESS REPORT ~~ -
Page 77 and 78: AN P QUARTER 1Y PROGRESS R EPOR J T
Page 79 and 80: ANP QUARTERLY PROGRESS REPORT of 0.
Page 81 and 82: ANP QUARTERLY PROGRESS REPORT q0-2
Page 83 and 84: 4NP QUARTERLY PROGRESS REPORT on d
Page 85 and 86: ANP QUARTERLY PROGRESS R €PO RT P
Page 87 and 88: ANP QUARTERLY PROGRESS REPORT ammet
Page 89 and 90: ANP QUARTERLY PROGRESS REPORT catho
Page 91 and 92: P,NP QUARTERLY PROGRESS REPOK'I ___
Page 93 and 94: ANP QUARTERLY PROGRESS REPORT CH EM
Page 95 and 96: ANP QUARTERLY PROGRESS REPORT A pla
Page 97 and 98: ANP QUARTERLY PROGRESS REPORT Fig.
Page 99 and 100: ANP QUARTERLY PROGRESS REKIRT TABLE
Page 101 and 102: ANP QUARTERLY PROGRESS REPORT TABLE
Page 103 and 104: ANP QUARTERLY PROGRESS REPORi Fig.
Page 107 and 108: ANP QUARTERLY PROGRESS REPORT Ceram
Page 109 and 110: A N P Q UA R I-EKIY PRO G R ESS R E
Page 111: ANP QUARTERLY PROGRESS REPOR7 Effec
Page 115 and 116: ANP QUARTERLY PROGRfSS REPORT Flamm
Page 117 and 118: AMP QUARTERLY PROGRESS REPORT of tw
Page 119 and 120: ANP QUARTERLY PROGRESS REPORT The e
Page 121 and 122: ANP QUARTERLY PROGRESS REPOR7 trans
Page 123 and 124: AM? QUARTERLY PROGRESS REPORT at pr
Page 125 and 126: AMP QUARTERLY PROGRESS REPORT studi
Page 127 and 128: ANP QUARTERLY PROGRESS REPORT The m
Page 129 and 130: ANP QUARTfRLY PROGHESS REPORT As be
Page 131 and 132: ANP QUARTERLY PROGRESS REPORr Devel
Page 133 and 134: ANP QUARTERLY PROGRESS REPORT UNCL
Page 135 and 136: ANP QUARTERLY PROGRESS REPORi UNCLA
Page 137 and 138: ANP QUARTERLY PROGRESS REPORT lncon
Page 141 and 142: ANP QUARTERLY PROGRESS R€PORT 450
Page 145 and 146: 132 ANP
Page 147 and 148: ANP QUr4RTERLY PROGRESS REPORT Addi
Page 149 and 150: ANP QUARTERLY PROGRESS REPORT mater
Page 151 and 152: ANP QUARTERLY PROGRESS REPORT 138 (
Page 155 and 156: ANP QUARTERLY PROGRESS REPORT The c
Page 157 and 158: ANP QUARTERLY PROGRESS REPORT oxide
Page 159 and 160: ANP QUARTERLY PROGRESS REPORT - n 6
Page 161 and 162: ANP QUARTERLY PROGRESS REPORT 10. A
Page 163 and 164:
ANP QUARTERLY PROGRESS REPORT Oxide
Page 165 and 166:
ANP QUARTERLY PROGRESS REPORT and U
Page 167 and 168:
zirconium or aluminum complex, or l
Page 170 and 171:
11. SHIELDING ANALYSIS J. E. Faulkn
Page 172 and 173:
form in terms of the Spence functio
Page 174 and 175:
these integral 5 become Let and the
Page 176 and 177:
PERIOD ENDING SEPTEMBER IO, 7954 Al
Page 178 and 179:
0 20 40 60 80 IO0 120 140 160 I, Di
Page 180 and 181:
... Two configurations, a single du
Page 182 and 183:
The thermal-neutron flux (Fig. 13.2
Page 184 and 185:
E-7 1 O6 I 5 - - L I ___- 2 f o5 2
Page 186 and 187:
TIME (rnin) PERIOD ENDING SEPTEMBER
Page 188 and 189:
. - ., . ....._____... - PERiOD END
Page 190 and 191:
io3 5 .--w 2 _J U 0 0 >- " 2 2 40 t
Page 192 and 193:
PERIOD ENDING SEPTEMBER 10, 1954 Fi
Page 194:
part IV APPENDIX
Page 197:
REPORT NO. ~~-54-a-10 C F-54-6-4 CF
show all

ORNL-1771 - Oak Ridge National Laboratory

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?