Are there any odorant monitoring systems that focus on detecting leaks in gas distribution networks?

Yes. There are odorant monitoring systems specifically aimed at detecting leaks in gas distribution networks, especially where natural gas is odorized with compounds like THT or TBM.

Typical approaches include:

• Fixed-point odorant sensors installed near pipelines, valve stations, regulator stations, or inside odorization cabinets to detect abnormal odorant concentrations.
• Mobile / handheld odorant analyzers used by field crews to inspect suspected leak areas or verify odorization levels.
• Remote monitoring systems that track odorant injection rates and infer possible leaks when concentrations or delivery patterns don’t match expected values.
• Multi-sensor leak detection systems that combine odorant detection with gas concentration, pressure, or acoustic monitoring for better reliability.

These systems can help identify:

• Odorant leakage from odorization equipment
• Underdosing or overdosing of odorant
• Gas leaks in the distribution network when odorant is present
• Degradation or loss of odorant effectiveness

If you want, I can also list commercial products, sensor technologies, or how these systems differ from methane leak detectors.