O N L I N E V E R S I O N J GENERAL GUIDANCE J 19. A fire wall is a means of shielding a fuel tank 21. Flueblock chimney systems consist of a set from the thermal radiation from a fire. For LPG tanks, it also ensures that gas accidentally leaking from the tank or fittings must travel by a longer path and therefore disperse safely, before reaching a hazard such as an opening in a building, a boundary or other potential ignition source. of factory-made components, made from precast concrete, clay or other masonry units, that are designed for assembly on site to provide a complete chimney having the performance appropriate for the intended appliance.
There are two types of common systems, one being solely for use with gas- burning appliances and the other, often called chimney block systems, being primarily designed for solid fuel-burning appliances. 20. A flue is a passage that conveys the products of combustion from an appliance to the outside air (see Diagram 2). Diagram 4 Types of installation 13 Approved Document J Combustion appliances and fuel storage systems O N L I N E V E R S I O N