Description
The Tank Cooling Nozzle distributes water in a curtain shaped pattern. Tank Cooling Nozzle is typically mounted in upright position at a distance from the exterior wall of the fuel storage tank for cooling of the tank. In case of fire in the vicinity of the tank it prevents the tank from absorbing the heat radiation. The nozzle position should direct water spray onto all exposed surfaces of the equipment to absorb heat from the fire and keep the equipment at a safe temperature. Tank Cooling Nozzles are available in Brass and Stainless Steel construction with different k-factors.
NFPA-15 can be referred for design guidelines. Do not leave dry/uncovered areas and ensure that the spray pattern covers complete surface.
The main pipeline strainers as per NFPA-15 are required for system utilizing nozzles with orfice diameter less than 9.5 mm (3/8 inch).
MAINTENANCE
The spray nozzle must be handled with due care. For best results, the storage as well as any further shipment be made in original packing only. Nozzle which is visibly damaged should not be installed. Use Teflon tape or soft thread sealant on male thread of the nozzle. Excessive tightening torque may result into serious damage to nozzle arms and deflector, which may affect the spray pattern of the nozzle and it’s performance. It is recommended that water spray system be inspected regularly by authorised technical personnel. The nozzle must be checked for atmospheric effects, external and internal obstruction, blockage if any. The nozzle should be cleaned or replaced if required. The system must be operated with optimum water flow atleast twice in a year or as per the provisions of NFPA or local authority having jurisdication. The owner is solely responsible for maintaining the water spray system and the components therein so that it performs properly when required
