Portable firefight equipment relates to fire extinguishers and fire blankets as they can be carried easily to the scene of a fire to provide a measure for immediate first action. The website link below provides information relating portable equipment.
Fixed Fire Fighting Installations
These are fire-fighting systems which are normally installed within the structure of the building. They include:
Permanent hose reels are installed in accordance with BS EN 671-3: 2000 and provide an effective fire-fighting facility. They may offer an alternative, or be in addition to, portable fire-fighting equipment.
Sprinkler systems designed to protect life and/or property and may be regarded as a cost-effective solution for reducing the risks created by fire as they can be very effective in controlling fires. A sprinkler system is usually part of a package of fire precautions in a building and may form an integral part of the fire strategy for the building.
Sprinkler protection could give additional benefits, such as a reduction in the amount of portable fire-fighting equipment necessary, and the relaxation of restrictions in the design of buildings. Guidance on the design and installation of new sprinkler systems and the maintenance are provided by BS EN 12845 or BS 5306-2.
Guidance is available from the Fire Safety Advice Centre on domestic and industrial fire sprinkler system, which can be accessed from the links below.
Wet and Dry Risers
Wet and Dry risers are intended for the use of the Fire Service to provide a readily available means of delivering considerable quantities of water.
Dry risers are vertical mains fitted into staircase enclosures or other suitable positions, constructed of 4'' galvanized steel pipe with outlet valves on each floor and an inlet fitted at ground level to enable the fire brigade to connect to the water supply.
Wet risers are pipes kept permanently charged with water either from a storage tank (via a booster pump) or direct from the town's main water supply.
Details of these systems can be found by selecting the website link below.
Foam inlets are special inlets usually fitted to provide an efficient way of extinguishing a fire in a basement or other area of high risk such as plant room. In many respects they look the same as rising main inlet boxes, but the door should be clearly marked "foam inlet". The risk area should be kept clear of obstructions to allow the foam to spread into the compartment.
This is a system containing pipe-work which can be filled with water (wet system) with a sprinkler which seals the pipe-work. If the temperature reaches a certain level the glass breaks and release water in the area of the fire. An alternative system is where the pipe-work is not filled with water until the sprinkler bulb is broken which then lets water into the system. Further details can be found on the Residential Sprinkler Associate website below.
Dry Risers Explained
A dry riser is an important component in the fire suppression system for buildings that have multiple levels. It is a type of pipe, and it is called a dry riser because during normal conditions it does not contain any water. It differs from a wet riser in that those already contain water. The purpose of the dry riser is to provide water to hose pipes that can then be used by firemen. It is also sometimes referred to as a standpipe.
A fire can happen anywhere in a multilevel building, and this can cause real headaches when it comes to putting the flames out. It would not be practical for firemen to run hoses from the ground floor all the way up to the 20th floor or above, so another option is required. This is where the dry riser comes into play. It provides a pipe to all the floors that will be contained within a fire resistant shaft. This makes it possible to get water quickly to wherever it is needed.
The difference between dry risers and wet risers is that the former already contains water and the later does not. The water inside the wet riser needs to be constantly pressurised and so it is connected to a pump – it also needs to be connected to a storage tank full of water. The main reason for choosing a dry riser over a wet riser is that in some cases there may be a risk that the water inside the pipe could freeze. The fact that the dry riser is kept empty of water means that this cannot happen. The pipe is still kept pressurised but instead of water it uses air for this. It is relatively easy for the firemen to attach the dry riser to a water supply when this is required for fighting fire. The connection for this will usually be on the ground floor. It is also common for the dry risers to be connected to the sprinkler system.
Legal Requirement for Dry Risers
Dry risers are not only installed into buildings because they are such a good idea, but there is also a legal obligation to install them. Any floor that is 18 meters above the ground will be expected to have a dry riser access point. This is to ensure the safety of those who use the buildings and the safety of those who will have to fight any fire. It is also the obligation of those who are responsible for these buildings to ensure that regular testing occurs to ensure that the dry riser is working. It is far too late to discover during the middle of a fire that there are some problems with the system. Most of the firms that provide the equipment for this system will usually also provide testing.
Dry risers play an important role in keeping people safe inside high rise buildings. This is something that most people will just take for granted, but it is hard to imagine how fire fighters cut put out fires without this technology.
Provided by Nationwidedryrisers.co.uk