High-end safety for high-end retail. JRA Safety’s fire strategy for Larry King Marylebone ensures luxury and compliance coexist.
Derbyshire Constabulary
Derbyshire Constabulary
JRA Fire Safety Advisors were appointed to deliver a specialist fire engineering review for Derbyshire Constabulary Divisional Headquarters, Derby, assessing the feasibility of maintaining critical server room cooling systems during fire alarm activations within this operationally sensitive facility. The commission arose following concerns that automatic shutdown of the server room air conditioning systems during fire alarm events could lead to overheating of essential IT infrastructure, creating a significant threat to police operational resilience and business continuity.
Undertaken on behalf of BAM Facilities, the review focused on the building’s dedicated first-floor server room housing critical data and communications equipment fundamental to Derbyshire Constabulary’s day-to-day operations. JRA were tasked with assessing whether the standalone cooling systems serving the server room could safely remain operational during specific fire scenarios without compromising the building’s fire strategy or suppression arrangements.
A comprehensive technical assessment was carried out of the server room’s passive and active fire protection measures, including fire compartmentation, electrically operated fire dampers, fire alarm cause-and-effect programming, dedicated ventilation arrangements, and the interfacing of the existing Inergen gaseous suppression system. JRA considered the performance of the cooling systems under a range of credible fire scenarios to determine how operational resilience could be maintained while preserving life safety and suppression effectiveness.
Following detailed analysis, JRA developed a risk-based fire engineering solution permitting the dedicated server room cooling units to remain operational during fire alarm activations originating outside the server room, whilst ensuring automatic shutdown where fire is detected within the protected server room itself to preserve the effectiveness of the gaseous suppression system.
Specialist recommendations were provided to coordinate the fire alarm and suppression system interfaces, ensuring robust and reliable operation of all integrated life safety systems while supporting the continued protection of mission-critical infrastructure.
This project demonstrates JRA Fire Safety Advisors’ ability to deliver sophisticated, performance-led fire engineering solutions for complex operational environments, balancing stringent fire safety requirements with the business-critical operational needs of high-dependency facilities.




















