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DARMATT H30 EASYFIT Darvent intumescent grills for ventilation and cooling Optional space frame design for access to actuator controls Construction Details Each Darmatt enclosure is specifically engineered to fit closely around the protected equipment providing removable, compact and user friendly fire protection. Darmatt is constructed from pre-shaped panels designed to fit together around the equipment to be protected. Each panel is made up of layers of insulation fibre and reflective foil, compressed and studded with nylon pins throughout the panel’s area. The complete exterior is covered by a non-fire rated weather resistant outer cloth. The nylon pins hold the components in the Darmatt PFP system together to ensure that the insulation materials remain securely in place and do not migrate to a different part of the panel (as experienced with lower quality PFP and insulation jacket systems). The nylon pins also compress the insulation to approximately 60% of its original thickness to provide a very flexible but compact system. All this helps to ensure that the PFP system is easy to remove and re-install. Accessibility – Space Frame, Inspection Hatches, and Penetrations Inspection hatches can be provided for each Darmatt installation to provide quick access to areas of the protected equipment that requires regular inspection or maintenance. Also, access can be further improved by utilisation of a space-frame around actuator controls. Lloyds have approved these hatches and use of a pultruded GRP or SS316 angle frame work incorporated within the Darmatt PFP system. 2 Darchem Thermal Protection Revision July 2013
DARMATT H30 EASYFIT Penetrations for operating mechanisms, hydraulic tubing and position indicators etc. can be provided to facilitate problem-free operation and maintenance of equipment without the need to remove the jackets. It is important that the client identifies any requirements for hatches and penetrations as early as possible such that they can be incorporated into the Darmatt PFP system’s design. Darmatt H30 EASYFIT PFP Panel Fastening Method Unlike traditional Darmatt, Darmatt H30 EASYFIT panels are fastened together using high quality multi-layer straps containing fire resistant KM-1 cloth. Coupled with a D-ring buckle system, the straps can be pulled tight to ensure a secure fit of the panels around the equipment in such a way that they take shape around the valve / actuator. Once installed, each panel will retain its moulded shape making future removal / installation quicker and easier. The straps are specially manufactured in-house by Darchem, and testing has shown strength, form and function to be retained for fire periods greater than 60 minutes. Testing & Certification Since its introduction Darmatt has been tested continuously to prove its capability as a passive fire protection system. Similarly, the Darmatt H30 EASYFIT system has been tested and witnessed by Lloyds Register and approved for 30 minutes UL1709 hydrocarbon pool protection. Although testing showed that Darmatt H30 EASYFIT can be designed to protect valve, actuators and other critical equipment for a period of greater than 30 minutes, Darchem offers our traditional Darmatt SS316 laced jackets for longer Hydrocarbon Pool fire and Jet Fire periods. Darmatt H30 Easyfit Lloyds witnessed furnace test sample – before and after images from 60 minutes at 1,100°C and then furnace cool down time The Darmatt PFP System is Lloyds Type Approved and also holds additional accreditation from DNV and ABS. 3 Darchem Thermal Protection Revision July 2013
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