LOW DENSITY ARTICLES CHARGED WITH FIRE-FIGHTING PRODUCTS, WHICH FLOAT ON INFLAMMABLE LIQUIDS, USED IN FIGHTING FIRES WHILE ABLAZE

Abstract: Open or closed containers which contain fire-fighting products inside or outside, or in both, and which float on inflammable liquids. These articles may be iced or not, but should guarantee that the fire-fighting product remains on the surface of the liquid on fire. Due to the large number these floaters will form a compact spume coating which, besides cooling off the surface of the liquid, at the same time will create gases improper for combustion and will separate the flames, and consequently extinguish the fire.

Description: Descriptive report of the patent of invention "LOW DENSITY ARTICLES CHARGED WITH FIRE- ' -FIGHTING PRODUCTS, WHICH FLOAT ON INFLAMMABLE LIQUIDS, USED IN ' FIGHTING FIRES WHILE ABLAZE". 5. This invention refers toarticles of low density charged with fire-fighting products which float on inflammable liquids, used in fighting fires ' while ablaze in inflammable liquid tanks. Generally the fires in ' 10. inflammable liquid tanks develop in three stages: 1st ' stage - the liquid is cold; the fire is fed by the small amount of fuel evaporating from its surface. 2nd stage - - the liquid is hot; the heat produced by combustion ' increases the evaporation from the surface and furnishes 15. a large volume of fuel to burn. 3rd stage - part of the' liquid in contact with the sheets of the wall of the ' tank reaches the boiling point and furnishes large olumes of fuel which will increase the fire, since the sheets ' of the tank*s wall above the level of the f el have f 20. ' their temperature raised excessively, and may even ' become crimson. This large volume of fuel ' evaporated by the force of boiling makes fighting the ' fire more difficult, since while boiling the vapor is ' 25. released with such force that it cannot be contained and it maintains the flame alive. The importance that the fire ' department gives to urgency and to beginning to fight ' the fire early is in the almost impossibility of being ' 30. able to suffocate the fire when this reaches the third ' stage . The fuel tanks protected by a ' collar trough - patent of a utility model by the same * inventor applied for on 10/1/1981 (No. 6101373), impede' 5. the fire from reaching the 3rd stage and prevent the • boiling and so allow the successful fighting of the fire by the processes usually used up to this time. The articles of low density ' charged with fire-fighting products, which float o*n ' 10. inflammable liquids are cold, closed containers, with ' one hole only, and with a volume of vacuity sufficient ' to guarantee the capacity of floating. These are charged partially with fire-fighting products, among others ice' (water) or carbonic snow CO2 . The charge is preferably 15. placed in the position opposite to the hole. The form of the articles is ' irrelevant but should make the juxtaposition easier in ' order to cover the entire liquid surface and reduce to a minimum the distance between the two. 20. The case of these articles being iced and at low temperature increaεle their effectiveness. The principal use of the articles of low density charged with fire-fighting products which float on inflammable liquids is to have the fire ' 25. regressed from the third stage to one of the lower ' stages, and even to extinguish the fire. They are useful in fighting fires in any type of inflammable liquid due' to their low average density being always below that of the inflammable liquid. 30. These articles, when cast upon ,1 the inflammable liquid, act in three successive phases 1) remove the heat from the liquid and eliminate the points of boiling, and reduce the fire from the third stage to the second stage; 2) coll off the surface of 35. the fuel and reduce the evaporation and decrease the fire from the second stage to the first stage; 3)produce a blanket of gas improper for feeding the fire while ablaze, which, depending on the type of charge, can extinguish the flames. The time which is required for these three phases to develop will depend upon the size and the quantity of the articles, and it is not necessary that all be of the same size. The number of articles that should be emptied into the tank will be that necessary to form a spume to cover the • entire surface of the liquid. O FI

Claims: - . - Claims l.-'-LOW DENSITY ARTICLES CHARGED WITH FIRE-FIGHTING PRODUCTS, WHICH FLOAT ON INFLAMMABLE LIQUIDS, USED IN FIGHTING FIRES WHILE ABLAZE", in 5. in lammable liquid tanks, characterized by being closed containers, with only one small opening which prevents the entry of liquid fuel inside and which float on the inflammable liquid which have a charge of fire- -fighting products much lower than their capacity, 10. resulting in such a volume of vacuity that the average density of the article is lower than that of the inflammable liquid. 2.-"LOW DENSITY ARTICLES CHARGED VJITH FIRE-FIGHTING PRODUCTS, WHICH FLOAT ON INFLAl-IMABLE' 15. LIQUIDS, USED IN FIGHTING FIRES WHILE ABLAZE", ' in tanks of inflammable liquid, characterized by being floaters of any form or size, and which can be hollow spheres, boxes, containers, with or without holes, or closed and vacuous receptacles, porous stones or non-inflammable 20. sponges wrapped either in ice (solid water) or in dry ice (C0 9 solids) or a mixture of both, but always resulting in a unit, in an article capable of floating on inflammable liquids and still in a quantity sufficient to cover the entire surface of the liquid ablaze. 25. 3.-"LOW DENSITY ARTICLES CHARGED WITH FIRE-FIGHTING PRODUCTS,WHICH FLOAT ON INFLAl-IMABLE - LIQUIDS, USED IN FIGHTING FIRES WHILE ABLAZE", in tanks' of inflammable liquid, characterized by being a series' of groups of life-saving belts placed around the C0 2 ' 30. torpedoes, guaranteeing their floating with the nozzle ' - open and upward, without boiling in the inflammable ' liquid, reating a layer of CO- in a quantity sufficient' to form and maintain a cloud of C0« over the surface of the liquid fuel and suffocate the fire. • -*,

Inventors: SOBRINHO LUIZ COCOZZA, SOBRINHO, LUIZ, COCOZZA
Applicants: UCERPO S A IDEIAS PESQUIZAS E, UCERPO S/A IDEIAS, PESQUIZAS E INVENCCOES
Application year: 1982
Main classification: A62C5
IPC codes: A62C3