## International Fire Code 2018 (IFC 2018)

#### Chapter 2 Definitions

Part II — General Safety Provisions

#### Chapter 4 Emergency Planning and Preparedness

Part III — Building and Equipment Design Features

#### Chapter 13 Through 19 Reserved

Part IV — Special Occupancies and Operations

#### Chapter 40 Through 49 Reserved

Part V — Hazardous Materials

#### Chapter 68 Through 79 Reserved

Part VI — Referenced Standards

#### Chapter 80 Referenced Standards

Part VII — Appendices

#### Appendix N Indoor Trade Shows and Exhibitions

Heads up: There are no amended sections in this chapter.

# Appendix G Cryogenic Fluids—Weight and Volume Equivalents

This appendix is for information purposes and is not intended for adoption.

User note:

About this appendix: Appendix G gives the fire code official and registered design professional a ready reference tool for the conversion of the liquid weight and volume of cryogenic fluid to their corresponding volume of gas and vice versa and is a companion to the provisions of Chapter 55 of this code.

### 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 m3) 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 m3).