Broadmoor Hospital is a high-security psychiatric hospital in Berkshire which was built in Victorian times. The facility recently underwent major renovation and extension projects to bring it up to 21st century healthcare standards. This included the construction of the Paddock Centre – a 72 bed hospital, with fire protection systems provided by Fireworks.
The Paddock Centre treats patients diagnosed with dangerous and severe personality disorders and has been designed to provide a range of therapeutic, educational, social and recreational facilities. Spread over three floors, the hospital includes six 12-bedroom wards, secure courtyards and a number of communal recreation spaces.
Fireworks designed and installed a fire protection system to provide maximum protection to patients and staff, perfectly adapted to meet the different requirements throughout the facility. BS8489 gives recommendations for the design, installation, commissioning and maintenance of watermist systems. It gives performance criteria for fixed watermist systems for specific industrial and commercial hazards, for both life safety and property protection is to be used as the British Standard for this hospital and forms the basis for this design.
High pressure watermist fire protection is ideal for hospitals and secure facilities as it provides the fastest, safest, most reliable solution for suppressing fire, smoke and heat – crucial in facilities with vulnerable patients.
The system is powered by a compact high pressure pump unit arrangement. For added security, in the event of a failed mains water supply, the design includes a water storage tank.
Grade 316 stainless steel pipework connects the water tank and pump to a network of watermist nozzles located in the patient bedrooms and other areas. Fireworks selected three different types of watermist nozzles to protect different areas. OH1 anti-ligature nozzles, tested in accordance with FM 5560 appendix G, were used in patient bedrooms and other patient ‘continually-observed’ areas. OH1 nozzles designed for rooms of up to 8 high were used in halls and atriums of other 5 metres in height. Finally OH3 nozzles were used for areas designated as higher fire hazards, such as storage rooms and laundry areas.
All components of the system, including nozzles, were tested. The entire pipe network was hydrostatically pressure tested 1.5 times operating pressure of the system in accordance with NFPA750 standards. Watermist nozzles and components in the pump are designed for durability and were tested and approved by VdS and FM