A relatively new regulation, 49 CFR 192, which was effective October 5th, 2022 in the US, specifies minimum federal safety standards for the transportation of gas by pipeline. It serves as a framework to prevent accidents, mitigate risks, and maintain the integrity of pipelines throughout their lifecycle.
A key requirement of this regulation (192.636 (d) Valve monitoring and operation capabilities, subsection (3)) mandates that certain valves capable of being monitored or controlled by SCADA systems on pipelines must be equipped with dual power sources.
Applications of 49 CFR 192
This regulation casts a wide net, applying to all major gas transmission pipelines, as well as city gate stations, pipeline waterway crossings, or any locations where subterranean pipelines run under roadways. It also encompasses any locations with shut-off valves installed for environmental reasons.
As a federal register regulation, this regulation impacts the entire gas transportation industry in the United States. Both local distribution companies (LDCs) and midstream pipeline companies are responsible for ensuring the valves within their networks are compliant.
Impact on the Industry
Prior to the implementation of 49 CFR 192, many LDCs relied solely on utility power to operate the valves within their distribution networks. They are now responsible for retrofitting their valves with secondary power sources, which can involve additional costs and logistical challenges associated with equipment acquisition, installation, and maintenance. This regulation reflects a growing trend towards stricter regulations in the energy sector. It could pave the way for similar regulations in other industries with critical infrastructure, and other progressive countries, including Canada.
Comparing Options for Compliance
LDCs have several options to consider when complying with this regulation for rupture-mitigation valve backup power sources.
TEGs (Thermoelectric Generators)
TEGs are a proven, trusted, and familiar solution for ultra reliable field power. They are excellent solutions for primary and backup power for valve actuation in compliance with 49 CFR 192. Their biggest advantage is that they provide seamless takeover if the main power source fails. TEGs boast exceptional reliability and require minimal maintenance. They are durably constructed to withstand the harshest environments in the world, making them suitable for any location.
Additionally, TEGs boast impressive environmental benefits. They contribute to cleaner emissions by destroying methane gas during the power generation process. TEGs are relatively inexpensive compared to diesel generators, and their compact modular design allows for easy augmentation on existing solar/battery sites. They are user-friendly and integrate seamlessly into existing setups.
Solar Panels and Batteries
One enticing option is solar panels and batteries or a battery bank charged by utility power. These options offer instant access to clean energy with well-understood technology and a straightforward installation. However, there are some factors to consider. Solar systems require dedicated space for the panels, and batteries require a stringent maintenance program to ensure optimal performance and lifespan. Security is another concern, and theft of solar panels and batteries is a possibility. Finally, the cost-effectiveness of these options hinges on actuation power requirements and duration of backup support, which have a major impact on panel and battery sizing.
Diesel Generators
Diesel generators are another reliable backup solution. However, they are not considered environmentally friendly and do not offer instantaneous power. Diesel generators also have higher maintenance requirements than other options. They require periodic inspections, regularly scheduled maintenance, and fuel top-ups to ensure they are ready when needed. Additionally, integrating them with existing electrical systems often involves synchronization with an automatic transfer switch, adding another layer of complexity.
The 49 CFR 192 regulation strengthens pipeline safety and preparedness in the US gas transmission industry. While options like solar and battery or diesel generators have their limitations, TEGs offer a compelling alternative as a rupture-mitigation valve backup power source. TEGs provide a clean, efficient, and low-maintenance solution for LDCs and midstream pipeline companies seeking to comply with the regulation and contribute to a safer and more sustainable future.
About Global Power Technologies
Global Power Technologies is the world leader in the design, manufacture, and distribution of TEGs. They offer a range of TEGs suitable for various applications, including rupture-mitigation valve backup power. These units are known for their efficiency, durability, and reliability. Their TEGs have recently been deployed across the USA with LDCs to solve their 48 CFR 192 backup power requirements.
For more details on how Global Power Technologies can help you with solving your backup power implementation, please contact us.
