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Preface <br /> _Tire Material Characteristics - Hire Fjgjhttin_ ( tmsiderations <br /> Site Information <br /> I ires are it h%drocarhon-based material containing a higher cnciu% content per pound than 01,11 <br /> Fires ha%c an ignition temperature of*about 000 dcurees Vahreniteit and are not readil-, ignite,! <br /> accidentally. Ilu��e�er, once ignited, cumhustir:¢i is rapid due to their hi��h �olatilc-to-iixcd <br /> carbon ratio(approximatek 65"4) xolatilel. flesh can he conducted �%ithirt hurtling lilies ol'101ole <br /> and coarselN shredded tires b-, reinforcing %%ire present in tires and bx Ilammable oils L)cnerat,d <br /> during incomplete combustion. Potential ignition sources arc cxtrcnteh limited. <br /> he characteristics of fires involving scrap tires are dependent on the size and t\pc of pile. tiincc <br /> data regarding lire tiro characteristics is limited. lite iolltming inli rmation re�lardinu historical <br /> characteristics and techniques is pro%ided liar reference. <br /> Whole tire piles typically become totally imolved rapid1%. Suppression is gcneralk successful <br /> only if it is initiated rapidl\ before heat is conducted into internal areas of the pile. I thereaiier. <br /> eater is generall\ vaporized b\ extreme heat before it can reach and cool internal pile areas. <br /> Water applic;ttion increases generation of oils b\ depriving oxygen required for complete <br /> combustion and by enhancing :t 4vater-shift chemical reaction. its it result, if%Nater is not <br /> successfiil in suppressing the fire rtpidl\. the available \%ater suppl\- is generall\ diverted to <br /> control fire spread by application to am' adjacent piles. <br /> Piles of shredded tires tend to burn on the surtace %tiith less penetration into the pile interior. <br /> Einer shreds and compacted piles general I\ have a lox\cr rate ofpenetration_ As it result. eater is <br /> generally applied to the leading edge of the surface fire tier control purposes. then gradualh <br /> \%orked hack to the source area. Renimal ofsurlace material bV lheav\ equipment operating in <br /> conjunction orith it xNater spra% mac be required to extinguish renroirtinL- 1101 spot~. RCII)OXed <br /> material must he thoroughlyquenched and moved to small isolated piles in areas remote From <br /> other piles. <br /> Potential Hazards: <br /> I. Oil runoff- As a potential exists to create pyrulctic oil rtuwfi: special attention should <br /> be fOcused on containment ol'runolf folltmed h% removal or diversion to «ante %\ater treatment <br /> Facility. <br /> 2. I ligh heat - Due to rapid release of heat. ani and all nun fire response equipment <br /> should he moved to it safe distance auay Dont the area imolved in the lire, <br /> page' <br />