FOCUS
Hazardous materials Other components
Cylinder valves are invariably supplied with a pressure gauge so that a quick visual check can be made by the user to confirm that the system is still charged. Additional, optional equipment can be added to the basic modular system, including: • manual actuation devices (for indirect systems)
• • •
input for operation by smoke or heat sensors remote reading pressure gauges system isolation switches
• outputs for disconnecting power supplies – probably essential for modular systems protecting electrical or electronic equipment – disconnecting the protected racks from mains power will usually prevent reignition.
Range of applications
Originally designed for use in racing cars, DLP and ILP systems are now found in a wide range of other applications, one of the most common being in heavy mobile plant such as earthmoving equipment. Some vehicle manufacturers now offer the fire suppression systems as a factory fitted option.
Dual agent indirect system on Tana shredder
Control cubicle with burst tube in place Standards and certification
As all DLP and ILP systems are based on pressurised cylinders, it is a given that all manufacturers will supply only equipment which meets the requirement of the Pressure Equipment Directive (2014/68/EU) and be CE marked accordingly. There is, however, at present no British or
System installed in large CAT
Recent fires in recycling plant sites have also demonstrated the benefits of fitting fire suppression in the grinding and shredding machinery (which is often also mobile) used to process waste, including plastics. Other proven applications: • public service vehicles (coaches and buses)
• electrical control cubicles • data network controls •
IT/server cupboards
• small alternators – especially in unmanned hydro stations
• wind turbines – gearboxes, yaw ring hydraulics, PF capacitors
34 APRIL 2018
www.frmjournal.com
European standard for DLP, ILP or modular fire suppression systems. However, there is a 2017 BRE Loss Prevention Standard – LPS 1666: Requirements and test procedures for the LPCB approval of direct low pressure (DLP) application fixed fire suppression systems. There are at present three companies holding product certification to this at the time of writing. The LPS scheme so far only accredits single container systems (which some will view as a retrograde step, as it excludes twin agent systems, which have a proven track record in large mobile plant). It’s worth noting that while LPS 1666 does not specifically exclude mobile plant in its scope, in Section 1 it mentions only ‘enclosures such as electrical switchgear cabinets, server racking and similar installations’. There is also a restriction on the size of systems at protected areas
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