BETE Nozzles for Fire Protection

1 Acustom er was design ingawa ter del uge system to protec tan11'x40'x8'highchem ica ltank .Th ey needed comp let ecover ag efro m2hea der srunn ing pa rallelto the 40' long Appl icat ion sEn gin eerspro vid ed sev era lspraytra ject ories and the Nser ieswas recomm ended becaus eitoffered theproper combin atio nofcover ag ean ddr oplet size, as wellasindus try ap prov als, such asFact ory Mu tual and UL .BET ENser ies fireprotectionnozz les are reco gnize dacrossthepetrole um and chemicalproc essing indus tri esasthefirstcho iceindr y,fixed firesup pr essionsystems .BETEN seriesno zzlesareused routinelyindryfirepr otectionsystemsprotectingoffshoredrillin grigs ,LPGtanks ,andLNG tanks ,aswellas ot he rtype sofvesselscon taini ng flam mabl eliqui ds.

2 WaterDelugeBETE Appl icat ion sEn gin eerssuppli ed spray pa tterntrajec toryda ta for the fire sup pr ession sys -tem in the mi lelon gBu rnleyHighw ay Tu nn el inMelbo urne ,Aust ralia. The da ta inclu de ddi fferent wi nd velocit ies toensure tha tthe no zzles spe cif iedwo ul dof fer suffici ent coverageov er anu mber ofdi fferen twi ndvel oc ities inthe tunnel to con trolafire. Th esystem uses acombi -nat ion of BETE N7W and N8 Wnoz zl es con stru cted intype 316stai nl esssteel .In March of 2007 ,aseri ous autoaccid ent occurred tha tres ult ed inafire in the tun nel. The spri nklersystem was act ivat ed an dBE TENseries nozzl es succeeded incont rol ling the Nseri es no zzles are Fac toryMu tual and Ll oy d s Reg isterapproved for fire pr ot ect ion, arequ irem ent for oper at ion ports.

3 Th ese no zzlesare used on ships with wat ersys tem s, oft en rep lacing olderCO2ba sed sys tem noz zl es arealsousedto protec tout do or escap erou tesonboa rd tanker san dof fsho reoil-dri lling platfor ms .Pr edictedspra ypat terns an dtraj ect oriespro vid eesti mat ed nozz lecovera ge und er var iou swin dcondi tions .Us ing this dat a, ou rcustom ers are abl etodeter minethe cor rect noz zle mou nti nglocations .BETE has supplied Dec kEd ge applic ations .Th e3/4"NF 300- 80X and the3/4"NF3 00- 80 ha ve been us ed insprayin gAq ueo us FilmForm ingFo am onthedec ks of airc raf e1/2"TF29- 180 was devel opedfor Navy magaz ine sprin klin gonships; it meet sMil ita rySpeci ficat ion MIL- S-24660 (SH).

4 Th e18 0 ful lconepat tern reducesthe ver tical clearan ce requi redbetw een sprin klers an dordi nan cefrom18" to 4".Req uirem ents for thermalradi at ion scr eeni ng forperson nelprote ction on ship shav ebeen metmo st effecti vel ywith the TF 170orTF150 series nozz les. Th eTFnozzles prov ide bett er absor ptio nofther mal energy an ddi ssi pate sthe heat an denergy from the emult ipl econcent ric conesprovi de abar rier to ai rreent erin gthe fire whi leal somi nimi zingspray wind dri er was develop inganew wa ter wal lpr ot ect ion systemonanoi lrigto protect equip mentand pe rsonne lfrom the extr emeheatgenerat ed bythenat ur alga sfla re. The cur ren tsystemconsisted of afew noz zles on theflare boo m,but was inad equ at eforthe am ount ofhea tgen era ted.

5 BETE App licatio ns Engin eer ssugg est ed awid eangl espi ralwou ldbe app ropri ate, specif i-cal ly, the N5W to ma tch thespecifi ed flowrate. Tocon firmspacin g, BE TE mod elin gsoftwa rewas used todet ermin espra ycover age traject ori es fro meachnozzle when sprayed hor izont all youtw ard. Th ese trajecto riesprovi ded the cus tomer theconfid ence that thenew desig nwoul dbe mo re tha nsuffici enttopro tect the :Since itsincept ion in 1950, BETE Fog Noz zle, Inc. hasbeen reco gnize dasan expe rt in the fire pr otec tionind ustr shigh-pe rform ance nozz lesconti nuetobethe pr emier cho ice for of fsh ore dri lli ngandpro duc tionpl atforms ;petro leum stor ageandtrans fer station s;LNG tank s; and inawid evarie ty of indus tri alandcommerci alapp lic ation :BETE s wi de range of fir epr ote ctionnoz zles meet indu stryappr ov ,FactoryMutualSystem,UnderwritersLaborat oriesandLloyd sRegister-andarecon sid ere dtobe thestandar dfor criti cal spr aying appl icati ageof thelate st de vel opmen ts in ma ter ialstechnolo gy andcontin ue to work wit hcompa nie sto crea tethemo st eff icien tfire pr ot ection nozz :Ourpr ove nsucce ss isaresult ofour abi lity to fin dcrea tiv esolu tion sto diffi cult sprayin gchalle nges.

6 BETE App lic ationsEngineer scan app ly their ye ars of exper tise to recomme ndanozz le design todeliv er the spe cific spr ay pe rforma nc enecessar yforyour fir eprot ect ion requ irements. Ou rsta te-of-the-ar tspraylaborato ry is de sign ed toprov ideawi de range oftest ingcap abilit ies toacc om modat eeme rgi ng indu stry er Wa ll Wat er isused asabar riertoshi eld aga inst radiant heat ,har mfulgas es, and flames to prov ide pr ot ect ion forpers onnel and equ ipm en zl es: TF150 /170,N, FF, NFTF 150/170 spi ral Nozzles wit hhigh flowrates, wi de coverage in clos epro ximity,multipl econcentriccones ;more ef fectivetha nafanN spira lwithna rrow er ang les than theTF1 50 /17 0;regu latory ap pr ov als forfirepr otec tion appli ca tionsFF provi des awid e, sing le shee tsp ra ywith a145 a ngl e.

7 Le ss ef fect ive coo lin gan dba rrier protec tion than spir al- type(TF,N) noz zlesNF grea terchoi ce of ang les than FF(15 upto 120 )Wat er De luge Ther eare twogen era lca tegori es for wa ter delu gefirepro tec tionsystem rec tExt ingu ish-Lar ge qu an tities ofwat er are spra yed over the fla me sto co n-trol the blaze and ext ing uis ol ing -Wa ter is spra yed ont otheex te-rio rsu rfa ce of vessels that ar eund erpre ssu re and/ or con tain volat ile mater i-als ,cool ing the vess el and preven tin gex-plo si le s: N, MaxiPa ss, TFX P, TF1 50, TFX PW, FFN, TF XP , TF 150, TFXPW all sp ira ls pro videaspe ctr um of drop sizes with co ncen tricrings of large rdroplet ,hig hmomen tumspray conta ini ng fine dr op let sbe tween therings.

8 The high mom ent um, larg edro prings punch through the flame wh ilethesma lle rdrops va porize quick ly,co mbin ingmax imu mflamepenetra tio nand heattran sfer .Thi smu ltiple co ne st rat egy min i-mize swind dri ft and prev en ts oxyg enfromreent ering the spr ay ar eaN spi ra lnozz le with adv an tages lis tedabo ve plu stighter tolera nces tomeet insur -an ce approva ls. Protec tiv eblo w- of fcoversava ila bleMa xi Pa ss us ed when co ver ag ediameteris more imp ort ant than atomiza tion andhead room is adequ ate. The MaxiPa ss pro -duc es larger dropl ets tha nanequiv alentflo wra te sp ira lca us ing imp ro ved wind re-sistance. High-pres sure op er at ionnar ro wsthe spra yang le for gre at er pen et rat ion an dres ist ance tocros swindsTF XP spira lnoz zl ewit had va nt ag es listedabo ve bu twi th maximumfree pas sageFF used for surface or equ ipmen tpr otec -tion when rel ying on rund ow nforpr otec -tion is ac cept ab leMar in e Mari ne appl icat ion sinclud ede luge, foam ,and water wa ll sy stem swh ere the nozz les are sub ject toext rem ewe ather condi tions and expo su retoseawa ter.

9 Nozzl es: TF29 -180, SRW M,in ad dit ion towat er wa ll andwater delu genozzl esTF29-180 ver ywi de cov erag eforlimi tedhead space areas (such as stor ageroo ms onshi ps)SR WM pop- upoperat ion fordeck cool -ing/p ro tect ion/d econ taminat ion; usedwhe re aper manent ly ex posed nozzl ewou ldbe an obstr ucti onHa lon Repl ac em ent Profes sio nalsare turn ingto fine water mist sys tems inlieu of en vi ronm ent-d amagi ng Hal on sys -tems .Excep tionall yfine wat er dr opl et sar espray ed ov er the firewh ere they evapo rat eand displace theoxygen, extin gui shin gthe fire. Th elowvolum eflow and highev ap or at ionrate minim ize wa ter damagetose ns itive eq uipment .No zzl es: Mic ro Whi rl, L, PJ, P, Mi croWhirl HeadMi cr oW hirl-high- press ure nozzle produ c-ingvery low flow, ext remely fine, mist ingpro tecti onP, PJ hi gher flo ws than the Micr oWhi rl.

10 Pro du ces aver yfine mis tby means ofanex ter nalimp ingement pinL-high er flow sthan the PJ with fineatomi zat ionMi cr oW hirl Head stand ard, stockmani fol dfor uptoseven (7)ind ivi dualMicr oW hi rlnozzlesFoa m The no zzles are used tospr aylow- expa ns ionfoam, su ch as AF FF, ontoshi pdecks an dinsmal ler en clos ed areas tohel psu bd ue the es: TF, N, NF , NF XTF, N sp iral nozz les ar epl aced so that thespray isper pendi cu larto the surface to beco ve redNF, NFX flat fan nozzl es are orient ed tospray pa ral lel an dvery clos etothe su rfacetobe pro tecte dTunn el Fir e Prot ec tion Awell-des igned fixed fire su ppres sio nsy stem inatraf fictunn el prot ects agains tloss ofhum an life an dmin imi zes st ruct ural dam -age in the cas eof afire orexpl osi on.