Wireless Methane Odorant Detector

Wireless Methane Odorant Detector

Status: Live
Reference: NIA_CAD0116
Lead Network: Cadent
Start Date: 01 December 2024
End Date: 01 June 2025
Budget: £128, 000
Funding Mechanism: Network Innovation Allowance
Technology: Gas Distribution Networks
Strategy Theme: Supporting consumers in vulnerable situations
Collaborating Networks: Cadent, Northern Gas Networks
Project Partners: Northern Gas Networks (GDN) Fifth Sense (Charitable Organisation): Fifth Sense, a charity dedicated to supporting people with smell and taste disorders, is working to enhance safety and wellbeing for those who cannot detect the odorant added to natural gas. Research indicates that up to 5% of the population has no sense of smell (anosmia), and up to 22% may have some degree of smell impairment, with this figure rising to 50% among those over 65. Many people are unaware of their smell impairment due to its gradual onset and lack of routine testing. The charity’s research found that 34% of individuals with a smell disorder have experienced at least one gas safety scare at home in the past five years. Additionally, 43% report experiencing depression and/or anxiety, with safety concerns being a significant factor. Despite these risks, there is limited public awareness and support, and natural gas detectors are not widely available in the UK. Fifth Sense is concerned that smell impairment is not being considered in gas-related accidents and fatalities. A widely available, low-cost natural gas detector could be transformative for millions in the UK with impaired smell, providing an early warning for gas leaks and reducing anxiety related to safety. Fifth Sense aims to lead a campaign to promote the importance of natural gas detectors, building on the success of its ‘SmellSafety’ project, supported by Cadent VCMA funding.

Abstract

This project aims to improve natural gas leak detection for over 3.5 million people with acute smell disorders e.g. anosmia. Traditional methane sensors require high power, limiting placement. The legally required odorant (80% tert-butyl mercaptan and 20% dimethyl sulphide) will continue as the UK transitions to hydrogen or blends, necessitating re-calibration of detectors.

Our solution is an odorant-based gas detector using a custom ultra-low power electrochemical sensor to measure TBM. These sensors operate for over 10 years on a sealed lithium-ion battery, detecting TBM from 20-30ppb (below our smell threshold) up to 1,500ppb (20% of the Lower Explosion Level), ensuring early warning of gas leaks.

With no natural sources of TBM, false positives are eliminated. The Sensor is ‘hydrogen ready,’ maintaining consistent odorant levels during the transition to hydrogen or blends, accurately notifying of gas leakage without reconfiguration.

Exploring the potential of utilizing an odorant detector instead of a methane detector opens up two significant avenues. Firstly, it offers prolonged battery life, approximately 10 years, due to reduced processing power. This extended battery life means less frequent maintenance and replacement, making it a more convenient and reliable option for long-term use. Secondly, it ensures affordability for all customers, making advanced detection technology accessible to a broader audience. This affordability can drive widespread adoption and enhance safety across various settings.

Additionally, this sensor can be widely distributed throughout the UK, covering a variety of vulnerabilities. Its versatility allows it to be deployed in diverse environments, from residential areas to industrial sites, ensuring comprehensive coverage and protection. By addressing multiple vulnerabilities, the sensor contributes to a safer and more secure environment for everyone.

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2024-12-01

2025-04-25