Section G101
California Fire Code (Title 24, Part 9) · 2022 edition · updated 2026-09-10 · California
CBSC: official editions, supplements and errata
Italicized text is a California amendment to the model code, as printed in the official publication.
G101.1 Scope. This appendix is used to convert from liquid¶
to gas for cryogenic fluids.
G101.2 Conversion.¶
Table G101.2 shall be used to determine the equivalent amounts of cryogenic fluids in either the liquid or gas phase.
G101.2.1 Use of the table. To use Table G101.2, read horizontally across the line of interest. For example, to determine the number of cubic feet of gas contained in 1.0 gallon (3.785 L) of liquid argon, find 1.000 in the column entitled “Volume of Liquid at Normal Boiling Point .” Reading across the line under the column entitled “Volume of Gas at NTP” (70°F and 1 atmosphere/14.7 psia), the value of 112.45 cubic feet (3.184 m 3 ) is found.
G101.2.2 Other quantities. If other quantities are of interest, the numbers can be multiplied or divided to obtain the quantity of interest. For example, to determine the number of cubic feet of argon gas contained in a volume of 1,000 gallons (3785 L) of liquid argon at its normal boiling point, multiply 112.45 by 1,000 to obtain 112,450 cubic feet (3184 m 3 ).
Copyright © 2022 by, or licensed to, International Code Council, Inc. (ALL RIGHTS RESERVED); licensed to California Building Standards Commission pursuant to License Agreement. No further reproductions is authorized. Any unauthorized reproduction or distribution is a violation of the federal copyright act and the license agreement, and subject to civil and criminal penalties thereunder.
APPENDIX G—CRYOGENIC FLUIDS—WEIGHT AND VOLUME EQUIVALENTS
TABLE G101.2 WEIGHT AND VOLUME EQUIVALENTS FOR COMMON CRYOGENIC FLUIDS
| CRYOGENIC FLUID | WEIGHT OF LIQUID OR GAS | VOLUME OF LIQUID AT NORMAL BOILING POINT | VOLUME OF GAS AT NTP | |||
|---|---|---|---|---|---|---|
| CRYOGENIC FLUID | Pounds | Kilograms | Liters | Gallons | Cubic feet | Cubic meters |
| Argon | 1.000 | 0.454 | 0.326 | 0.086 | 9.67 | 0.274 |
| Argon | 2.205 | 1.000 | 0.718 | 0.190 | 21.32 | 0.604 |
| Argon | 3.072 | 1.393 | 1.000 | 0.264 | 29.71 | 0.841 |
| Argon | 11.628 | 5.274 | 3.785 | 1.000 | 112.45 | 3.184 |
| Argon | 10.340 | 4.690 | 3.366 | 0.889 | 100.00 | 2.832 |
| Argon | 3.652 | 1.656 | 1.189 | 0.314 | 35.31 | 1.000 |
| Helium | 1.000 | 0.454 | 3.631 | 0.959 | 96.72 | 2.739 |
| Helium | 2.205 | 1.000 | 8.006 | 2.115 | 213.23 | 6.038 |
| Helium | 0.275 | 0.125 | 1.000 | 0.264 | 26.63 | 0.754 |
| Helium | 1.042 | 0.473 | 3.785 | 1.000 | 100.82 | 2.855 |
| Helium | 1.034 | 0.469 | 3.754 | 0.992 | 100.00 | 2.832 |
| Helium | 0.365 | 0.166 | 1.326 | 0.350 | 35.31 | 1.000 |
| Hydrogen | 1.000 | 0.454 | 6.409 | 1.693 | 191.96 | 5.436 |
| Hydrogen | 2.205 | 1.000 | 14.130 | 3.733 | 423.20 | 11.984 |
| Hydrogen | 0.156 | 0.071 | 1.000 | 0.264 | 29.95 | 0.848 |
| Hydrogen | 0.591 | 0.268 | 3.785 | 1.000 | 113.37 | 3.210 |
| Hydrogen | 0.521 | 0.236 | 3.339 | 0.882 | 100.00 | 2.832 |
| Hydrogen | 0.184 | 0.083 | 1.179 | 0.311 | 35.31 | 1.000 |
| Oxygen | 1.000 | 0.454 | 0.397 | 0.105 | 12.00 | 0.342 |
| Oxygen | 2.205 | 1.000 | 0.876 | 0.231 | 26.62 | 0.754 |
| Oxygen | 2.517 | 1.142 | 1.000 | 0.264 | 30.39 | 0.861 |
| Oxygen | 9.527 | 4.321 | 3.785 | 1.000 | 115.05 | 3.250 |
| Oxygen | 8.281 | 3.756 | 3.290 | 0.869 | 100.00 | 2.832 |
| Oxygen | 2.924 | 1.327 | 1.162 | 0.307 | 35.31 | 1.000 |
| Nitrogen | 1.000 | 0.454 | 0.561 | 0.148 | 13.80 | 0.391 |
| Nitrogen | 2.205 | 1.000 | 1.237 | 0.327 | 30.43 | 0.862 |
| Nitrogen | 1.782 | 0.808 | 1.000 | 0.264 | 24.60 | 0.697 |
| Nitrogen | 6.746 | 3.060 | 3.785 | 1.000 | 93.11 | 2.637 |
| Nitrogen | 7.245 | 3.286 | 4.065 | 1.074 | 100.00 | 2.832 |
| Nitrogen | 2.558 | 1.160 | 1.436 | 0.379 | 35.31 | 1.000 |
| LNGa | 1.000 | 0.454 | 1.052 | 0.278 | 22.968 | 0.650 |
| LNGa | 2.205 | 1.000 | 2.320 | 0.613 | 50.646 | 1.434 |
| LNGa | 0.951 | 0.431 | 1.000 | 0.264 | 21.812 | 0.618 |
| LNGa | 3.600 | 1.633 | 3.785 | 1.000 | 82.62 | 2.340 |
| LNGa | 4.356 | 1.976 | 4.580 | 1.210 | 100.00 | 2.832 |
| LNGa | 11.501 | 5.217 | 1.616 | 0.427 | 35.31 | 1.000 |
For SI: 1 pound = 0.454 kg, 1 gallon = 3.785 L, 1 cubic foot = 0.02832 m 3, °C = [(°F) – 32]/1.8, 1 pound per square inch atmosphere = 6.895 kPa. a. The values listed for liquefied natural gas (LNG) are “typical” values. LNG is a mixture of hydrocarbon gases, and no two LNG streams have exactly the
same composition.
APPENDIX G-4 2022 CALIFORNIA FIRE CODE
Copyright © 2022 by, or licensed to, International Code Council, Inc. (ALL RIGHTS RESERVED); licensed to California Building Standards Commission pursuant to License Agreement. No further reproductions is authorized. Any unauthorized reproduction or distribution is a violation of the federal copyright act and the license agreement, and subject to civil and criminal penalties thereunder.
CALIFORNIA FIRE CODE – MATRIX ADOPTION TABLE
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