Understanding the Control of Major Accident Hazards Regulations (COMAH)
The Control of Major Accident Hazards Regulations (COMAH) require companies that work with or store hazardous substances to implement stringent risk reduction strategies and formulate plans that will limit damage and avert major accidents if a dangerous situation arises.
The legislation was enacted following serious accidents involving hazardous chemicals, such as the Flixborough disaster in 1974, when an explosion killed 28 people and injured 36 others, demonstrating the disastrous consequences that such incidents could have. In addition to protecting workers, the legislation aims to safeguard individuals in surrounding areas and preserve the environment.
How COMAH sites are classified
Simply using dangerous chemicals in your processes or storing small amounts of them does not necessarily mean you are subject to COMAH regulations. Thresholds are set, and they specify the amount of each dangerous chemical that would indicate a need for enhanced vigilance. There are also aggregation rules. These allow for the fact that certain chemicals are more dangerous when in the proximity of others.
Lower-tier COMAH sites are sites where sufficient amounts of a hazardous chemical are present to warrant notification to the relevant authorities, the preparation of a major accident prevention policy, and a specialised safety management plan. These sites have more than the lower threshold specified for that particular chemical, but less than the upper threshold.
Upper-tier COMAH sites exceed the upper threshold specified for the dangerous chemicals they use or hold. The regulations for and oversight of such sites are far more stringent than they are for lower-tier sites because of their higher potential for disastrous accidents.
Examples of sites affected by COMAH regulations
Sites where the quantity of dangerous chemicals exceeds the regulatory thresholds are subject to COMAH regulations. Examples include:
- Chemical manufacturing concerns and storage sites
- Oil and gas refineries and storage sites
- Certain food and beverage production sites
- Alcohol production and storage sites
- Sites where certain types of waste are treated or recycled
How ATEX two-way radio technology supports COMAH compliance
|
COMAH compliance component |
Requirements | ATEX two-way radio technology support |
| Hazard Identification & Risk Assessment | • Involve professionals with expertise in hazardous substances
• Document findings in alignment with COMAH requirements • Continuous monitoring and assessment of risks |
ATEX two-way radios provide intrinsically safe communication in potentially explosive atmospheres during risk assessment activities. The resilient nature of these systems ensures continuous communication with assessment teams operating in hazardous zones, even when cellular networks are compromised. DMR and TETRA technologies offer encrypted data transmission capabilities, allowing secure sharing of sensitive risk information and GPS tracking of personnel in dangerous areas. Digital recording features maintain comprehensive audit trails of assessment communications, supporting regulatory documentation requirements while enabling real-time coordination between assessment specialists and site personnel. |
| Safety Reports | • Comprehensive safety reports for higher-tier sites
• Demonstrate appropriate safety measures • Comply with HSE guidelines • Report on hazard nature, magnitude, and prevention measures |
The robust communication infrastructure provided by ATEX two-way radios enables comprehensive data gathering from all operational areas, including hazardous zones where cellular communication may be unreliable.
DMR and TETRA systems offer digital logging capabilities with automated timestamping, creating detailed records that serve as evidence for safety reports. The encrypted nature of these communications ensures data integrity while the resilient network architecture guarantees information accessibility even during system failures, providing reliable documentation of safety measure effectiveness and emergency response procedures for regulatory compliance. |
| Safety Management Systems | • Implement and monitor safety measures in daily activities
• Define responsibilities for safe practice implementation • Ensure continuous oversight and control |
ATEX two-way radios form the backbone of daily safety management by providing reliable communication channels that function independently of cellular networks. The technology supports role-based group communications, enabling clear definition and monitoring of safety responsibilities across different operational areas. DMR and TETRA capabilities include lone worker monitoring, automatic safety check-in systems, and immediate escalation procedures for safety concerns. The resilient encrypted communication ensures continuous oversight and control, with emergency response activation capabilities that remain functional even when primary communication infrastructure fails. |
| Major Accident Prevention Policy (MAPP) | • Formal documented policy for managing major hazards
• Appropriate to specific risks and scale • Employee training and awareness programs • Integration with comprehensive safety management |
ATEX communication systems support MAPP implementation through secure channels that enable policy distribution and training coordination across hazardous operational areas. The resilient nature of DMR and TETRA technologies ensures policy compliance monitoring even in extreme conditions where cellular networks may fail. These systems facilitate emergency procedure training in realistic hazardous environments while maintaining secure transmission of sensitive policy information. The technology’s reliability during both routine operations and emergency scenarios ensures consistent policy implementation and supports comprehensive workforce awareness programs through messaging capabilities and automated reminder systems. |
| Emergency Planning | • Address potential failure scenarios
• Staff training programs • Notification of emergency services • Off-site emergency plans with local authorities • Community protection measures |
The resilient architecture of ATEX two-way radio systems ensures communication continuity during emergencies when cellular and other primary communication methods may fail. DMR and TETRA technologies can provide interoperability with emergency service radio systems, enabling seamless coordination with external responders. The encrypted communication capabilities maintain security during sensitive emergency operations, while priority communication channels ensure critical incident management. These systems support multi-agency communication during emergency exercises, automated emergency alert broadcasting, and community notification procedures. The technology’s ability to function in extreme emergency conditions, including potentially explosive atmospheres, makes it an essential tool for comprehensive emergency planning and response coordination. |
| Notification & Reporting | • COMAH 1 notifications to relevant authorities
• Updates for any operational changes • Timely reporting of accidents and near-misses • Regulatory compliance documentation |
ATEX two-way radios provide immediate, reliable incident reporting capabilities that function independently of cellular networks, ensuring regulatory notifications can be made even during infrastructure failures. The digital capabilities of DMR and TETRA systems enable automated incident logging with precise timestamps, creating comprehensive evidence trails for regulatory compliance. Encrypted communication channels ensure secure transmission of sensitive incident data to regulatory authorities while maintaining data integrity throughout the reporting process. The resilient nature of these systems guarantees that incident documentation can be captured from hazardous areas during investigations, supporting thorough compliance documentation and enabling coordination of investigation teams when conventional communication methods may be compromised. |
Safety coordination and disaster response require reliable communication systems
When the stakes are high and the environment is potentially dangerous, teams need support and careful coordination. In disaster response, this becomes even more important. Radiocoms deploys and supports communications systems that meet the needs of COMAH sites, manufacturers as well as the oil and gas industry, helping them to work safely and effectively.
Whatever challenges you face, Radiocoms offers you the communications technology solutions your organisation needs. Partnering with leading radio manufacturing brands, we have served the UK’s private and public organisations for over 50 years, bringing clear communication and providing our ongoing support. Contact our expert consultants for best-fit solutions tailored to your needs.
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