John Crane, a global leader in flow control technologies and a business of Smiths Group plc, has completed a Quantitative Optical Gas Imaging (QOGI) survey for a leading food-industry producer, identifying opportunities to reduce fugitive emissions, improve reliability and enhance operational efficiency through corrective maintenance.

The survey focused on a critical extractor used in vegetable oil production. Using advanced Optical Gas Imaging technology, John Crane engineers identified 22 potential leak points across fittings, seals, inspection points and flanges. Nine of these leaks were quantified at a combined rate of approximately 16 kg per hour, providing clear, data-driven insight to prioritise maintenance and repair activities.

Based on the customer’s reference value for hydrocarbon solvent use, the quantified leaks represented an estimated annual material loss exceeding $194,000 if left unaddressed. Conducted at a fraction of the potential material savings, the survey demonstrated a strong return on investment and highlighted the value of early detection and targeted maintenance.

Customer response to the programme has been highly positive. Following the initial survey, additional QOGI inspections have already been completed at a second facility operating similar equipment. Repeat surveys at both sites are scheduled for early 2026 to validate maintenance effectiveness and support sustained performance improvements. The approach has also generated interest from colleagues in other regions exploring similar initiatives within their operations.

By visualising and quantifying emissions that are difficult to detect through traditional methods, QOGI enables food-industry operators to protect process efficiency, support environmental objectives and enhance employee safety. QOGI is delivered as part of the John Crane Performance Plus modular service framework within the Asset Condition Management category, helping customers make informed, data-led maintenance decisions.

“This project demonstrates how advanced diagnostics can support more reliable and sustainable food production processes,” said Philippe Lambert, VP Commercial and Service, John Crane. “QOGI provides customers with clear visibility of loss mechanisms, allowing them to target repairs effectively and validate the impact of maintenance over time.”

The survey’s success highlights the growing relevance of QOGI in the food industry, where hydrocarbons and solvents play a critical role in production processes. When integrated into a structured Managed Reliability approach, routine QOGI monitoring supports improved maintenance planning, operational resilience and reduced risk.