Continuous Monitoring Enabled LDAR Programs: Enhancing Efficiency and Compliance – Case Studies in New Regulatory Programs

ABSTRACT Methane, a potent greenhouse gas, contributes significantly to climate change. The oil and gas industry is a major source of these emissions, necessitating improved leak detection and repair (LDAR) methods. Traditional LDAR, primarily reliant on handheld OGI cameras or US EPA Method 21 instruments, often misses intermittent emissions. This paper explores the effectiveness of continuous monitoring systems as an alternative or complementary approach for LDAR programs. Specifically, case studies showing the use of continuous monitoring systems in the California SB 1137 and US EPA OOOOb/c regulatory frameworks are examined. These case studies highlight key advantages of continuous monitoring systems. The first case study shows a fugitive leak from a thief hatch was detected within 24 hours, demonstrating rapid response capabilities. The second case study highlights the identification of incomplete combustion in fired equipment, leading to operational adjustments. The third case study examines an underground pipeline failure that was detected and repaired. Finally, a case study showing a potential 31% reduction in site visits required for compliance with regulatory requirements when using continuous monitoring-driven inspections compared to traditional methods. These findings suggest that continuous monitoring systems offer significant potential for improving leak detection, enhancing operational efficiency, and contributing to methane emissions reduction efforts in the oil and gas industry.