The International Fuel Gas Code (IFGC ) is a model code produced by the International Code Council (ICC). This document provides the foundation. SECTION (IFGC) GENERAL. Scope. This chapter shall govern the design, installation, modification and maintenance of piping systems. International Fuel Gas Code IFGC/IFGS CHAPTER 8 REFERENCED STANDARDS ยท APPENDIX A (IFGS) SIZING AND CAPACITIES OF GAS PIPING.

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This chapter shall govern the design, installation, modification and maintenance of piping systems. Iffgc applicability of this code to piping systems extends from the point of delivery to the connections with the appliance 0212 and includes the design, materials, components, fabrication, assembly, installation, testing, inspection, operation and maintenance of such piping systems.

Utility service piping located within buildings shall be installed in accordance with the ifhc safety and fire protection provisions of the International Building Code. The storage system for lfgc petroleum gas shall be designed and installed in accordance with the International Fire Code and NFPA In modifying or adding to existing piping systems, sizes shall be maintained in accordance with this chapter.

Where an additional appliance is to be served, the existing piping shall irgc checked to determine if it has adequate capacity for all appliance s served. If inadequate, the existing system shall be enlarged as required or separate piping of adequate capacity shall be provided.

The marking shall be spaced at intervals not exceeding 5 feet mm. The marking shall not be required on pipe located in the same room as the appliance served. Where two or more meters are installed on the same premises but supply separate consumers, the piping systems shall not be interconnected on the outlet side of the meters. Piping from multiple meter installations shall be marked with an approved permanent identification by the installer so that the piping system supplied by each meter is readily identifiable.


All pipe utilized for the installation, extension and alteration of any piping system shall be sized to supply the full number of outlets for the intended purpose and shall be sized in accordance with Section Each length of pipe and tubing and each pipe fitting, utilized in a fuel gas system, shall bear the identification of the manufacturer.

All piping, tubing and fittings shall comply with the applicable referenced standards, specifications and performance criteria of this code and shall be identified in accordance with Section Piping, tubing and fittings shall either be tested by an approved third-party testing agency or certified by an approved third-party certification agency. Piping systems shall be of such size and so installed as to provide a supply of gas sufficient to meet the maximum demand and supply gas to each appliance inlet at not less than the minimum supply pressure required by the appliance.

Where an input rating is not indicated, the gas supplier, appliance manufacturer or a qualified agency shall be contacted, or the rating from Table The total connected hourly load shall be used as the basis for pipe sizing, assuming that all appliances could be operating at full capacity simultaneously. Where a diversity of load can be established, pipe sizing shall be permitted to be based on such loads. Gas piping shall be sized in accordance with one of the following:.


CHAPTER 4 GAS PIPING INSTALLATIONS | International Fuel Gas Code | ICC premiumACCESS

Pipe sizing tables or sizing equations in accordance with Section Other approved engineering methods. Where Equations and are used to size piping or tubing, the pipe or tubing shall have smooth inside walls and the pipe length shall be determined in accordance with Section Initial supply pressure of 8. Initial supply pressure of Gas Natural Inlet Pressure 2. Gas Natural Inlet Pressure 3. Gas Natural Inlet Pressure 5.

2012 International Fuel Gas Code

Space and Water Heating Units. Water heater, automatic instantaneous.

Capacity at 2 gal. Capacity at 4 gal.

Capacity at 6 gal. Water heater, automatic storage, to gal. Water heater, automatic storage, gal. Water heater, domestic, circulating or side-arm.

International Fuel Gas Code 2012 (IFGC 2012)

Built-in oven or broiler unit, domestic. Built-in top unit, domestic.

Clothes dryer, Type 1 domestic. Pressure drop, inch water column Less than 2 psi.

Table capacities are based on Type K copper tubing inside diameter shownwhich has the smallest inside diameter of the copper tubing products. Pipe sizing between point of delivery and the house line regulator. Total load supplied by a single house line regulator not exceeding cubic feet per hour.