Does Your Gas Distribution System Release More Fugitive Emissions Than Alberta Allows?

Gas distribution systems are a key component in Alberta refineries. However, problems with a gas distribution system may result in excess fugitive emissions. This creates additional costs due to inefficiencies and may run afoul of Alberta emission regulations—regulations that are continually being updated based on changing environmental and societal needs.  

This article will discuss issues within gas distribution systems that contribute to fugitive emissions, methods to reduce emissions, and how working with a trusted Alberta gas distribution system provider can equip your refinery with the components and support to reduce fugitive emissions.

The Role System Components Play in Fugitive Emissions

Gas distribution systems are comprised of several components that are responsible for controlling the flow and pressure of gas. Each of these components is a potential source of fugitive emissions. The four major components (source inlet, primary gas pressure control, automatic changeover, and point-of-use) of a gas distribution system and the associated risks are discussed below:

Source Inlet

The gas source is connected to the gas distribution system by the source inlet. There are several components of the source inlet, including cylinder connections, hoses, tubing, filters, vent, purge, and relief functions. The pressure from the gas source is often significant, and, as such, the components of the inlet must meet pressure standards. Components that fail to meet pressure standards will result in increased wear and tear and, ultimately, additional leaks releasing costly gases to the atmosphere.

Primary Gas Pressure Control

The primary gas pressure control utilizes pressure regulators to reduce gas pressure to a safe and effective level for operations. Issues sometimes occur when needing to adjust delivery pressures based on the changing internal and external environment. This is particularly true in situations with changing temperatures. Incorrect control of pressure can cause damage to the system and leaks to occur.

Automatic Changeover

An automatic changeover is needed to continuously supply the gas. The automatic changeover utilizes two pressure regulators that allow the gas source to be changed from the service cylinder to the reserve one, without shutting down operations. Poor design and implementation of the automatic changeover—as well as wear and tear—may result in fugitive emissions being released when changing between gas sources. Standardization within these panels can help mitigate fugitive emissions that occur as a result of poor design.

Point-of-Use

The point of use provides operators the ability to measure gas pressure and adjust gas based on needs. The point-of-use system involves a pressure regula­tor, gauge, and isolation valve. Leaks may occur if these components malfunction and pressure is either measured incorrectly or is not properly controlled.
Luckily, there are solutions to mitigate the causes of fugitive emissions.

Fugitive Emission Mitigation Strategies for Gas Distribution Systems

Fugitive emissions are a concern for many industries in the region in terms of cost, operating issues, and environmental damage. There are several strategies that can help mitigate the amount of fugitive emissions.

• Update tubing and valves: Updating tubing and valves in a gas delivery system will reduce emissions by limiting leaks and seal issues. Tubing and valves should meet pressure and temperature regulations of use. Further, the chemicals in the system should be checked to make sure they are not corrosive to the materials constructing the tubing and valves.
• Update and maintain gas distribution systems: The components of a gas delivery system should be continually checked and monitored to make sure they are not worn out. Small damage can increase fugitive emissions and result in excess strain on other components of the system, which compound gas delivery system issues.
• Utilize reliable materials for system components: When implementing, updating, and repairing the gas delivery system, it is important to be aware of the gasses used in the system and the pressure and temperature of operation. Some gasses may need to have components that are constructed of materials that can withstand high pressure and corrosion from the gasses involved. 
• Leverage leak detection and monitoring: Detecting and monitoring leaks and then quickly repairing components is one of the best methods to limit fugitive emissions. Being able to quickly get replacement components and materials—such as tubing, valves, and seals—will allow for repairs to be made with minimal fugitive emissions.
• Conduct on-site audits: Regularly planned auditing of the gas distribution system will allow for potential problems to be identified before they become big problems. On-site audits from a trusted provider will provide insight into components that need to be replaced and potential sources of fugitive emissions.
• These methods for reducing fugitive emissions from gas delivery systems are beneficial in terms of limiting inefficiencies and costs, limiting a cascade of component failure, and adhering to Alberta fugitive emission standards. To effectively implement these methods, it is imperative to partner with a provider that can utilize their expertise to quickly assist you with your gas delivery system needs.

Partner with Edmonton Valve & Fitting to Reduce Fugitive Emissions

A local gas distribution system provider will be familiar with Alberta’s emissions standards and can advise you on how to reduce fugitive emissions. Whether you’re working towards compliance with fugitive emissions standards or you want to exceed the minimum requirements for improved performance, you can trust Edmonton Valve & Fitting to provide advice and components to maximize your facility’s efficiency and reliability. Our expert Field Advisors can perform an onsite evaluation and give recommendations to help reduce fugitive emissions from your gas delivery system and other sources in your facility.