Aspects of scanning launchers to extinguish a fire on the energy dangerous objects
The topical application of remote method of extinguishing fires in radiation hazardous energy facilities. Analysis of the organization and liquidation of fires in nuclear power plants (NPP) has shown that the use of the traditional ways and means of extinguishing fires does not meet modern safety requirements for both the environment and for fire liquidators. This was especially in the course of extinguishing the fire occurred on the 4th unit of the Chernobyl nuclear power plant in April 1986. The main distinguishing feature of this class of fire consists of 3 components: the spread of fires to the most radiation dangerous technological station sites; the release of radioactive substances into the environment; the impact of radiation on operating personnel and firefighters. The principle of the method is to detect the source of fire, determining its dimensions and coordinates with the subsequent introduction to the basic computer setup and making decisions on the optimal organization of the source of fire suppression. As suppression means can use various kinds and types of delivery vehicles in the fire-extinguishing composition combustion zone. Chemisorbed extinguishing agent is a multi-component formulation, which was based on ultrafine powder extinguishing agent based on ammonium phosphate, which in equal proportions, about 1,5℅ from the bulk of MAP, added components - flegamatizatory polisorbent flame and forming complexes with radioactive short-lived isotopes iodine formed during the combustion of fuel elements of a nuclear reactor, and of particular risk to the health of personnel and firemen involved in extinguishing the fire at the plant. The operating principle of the scanning setup is as follows: in the event of outbreak of fire dispatcher notifies the fire brigade unit. The plant operator with a laser rangefinder determines the distance sight and the geometrical parameters of the source of fire, that is automatically entered into the on-board computer, while depending on the type and size of fire plant operator selects the optimal method for fire suppression. Delivery extinguishing elements is performed by scanning the launcher (SPU) in the area of local or individual combustion points.