Competency E3: Use Codes, Regulations and Standards to Size Gas Piping Systems

The gas fitter is responsible for installing a piping system that is capable of supplying enough fuel to each gas-fired appliance. Sizing and installing the system to the requirements of the B149.1 Natural Gas and Propane Installation Code will ensure the appliance has the required volume of gas to operates at the manufactures designed input rate.

As was previously mentioned the consumer gas piping system conveys the fuel gas from the point of supply to the gas burning appliances. Previous competencies covered different types of pipe, tube, and fittings that are approved for gas installations, as well as their installation criteria and regulations.

Additionally, the factors that affect the gas flow rate in a piping system were discussed. In this competency will explain how to use the gas code to ensure the consumer gas piping system is sized to ensure adequate flow rate.

In this module the use of the term “Piping System” can include any approved pipe, tube, connector, hose or fitting used to convey the fuel gas from the point of supply to the gas burning equipment.