FumeHoodTraining

通風(fēng)櫥培訓(xùn)

FumeHoodscont’d通風(fēng)櫥AllfumehoodsatJRLaboratorieshaveaminimumfacevelocityof0.75m/sJR實(shí)驗(yàn)室所有通風(fēng)櫥最小表面速度是0.75米/秒ThisaccommodatesWCBregulationsfortherequiredfacevelocitywhenworkingwithcarcinogens,orpossiblecarcinogensinafumehood這符合WCB法規(guī)中關(guān)于通風(fēng)櫥中使用致癌物質(zhì)或可能致癌物質(zhì)表面速度的要求

FumeHoodscont’d通風(fēng)櫥Ahigherfacevelocity(>0.75m/s)isnotnecessarilybetter再高的表面速度(>0.75m/s)不一定好Anextremelyhighfacevelocitycancauseturbulenceandforcetheairbackouttowardtheoperator太高的表面速度可能導(dǎo)致擾動(dòng),使空氣返吹向操作者

FumeHoodscont’d通風(fēng)櫥Thefacevelocitywillnotbemaintainedifthesashisplacedabovethecertifiedmarkingsonthefumehood如果窗框置于通見櫥規(guī)定標(biāo)記以上,就不能保持表面速度Thesashplacementmarkingiscertifiedbyaprofessionaltoensureafacevelocityof0.75m/sismaintainedacrossthefrontofthefumehood窗框放置標(biāo)記是由專業(yè)人員認(rèn)定的,以保證在通風(fēng)櫥的前部表面速度保持在0.75m/s

FumeHoodscont’d通風(fēng)櫥Leavesashloweredwhen:將窗框拉下Notattendingexperiment不需要人看管的實(shí)驗(yàn)Overnight隔夜

FumeHoodscont’d通風(fēng)櫥Avoidrapidmovementaroundthefumehood避免在通風(fēng)櫥周圍快速移動(dòng)Atechnicianwalkingrapidlypastthefrontofafumehoodwillcauseturbulenceintheair技術(shù)人員快速走過通風(fēng)櫥,會(huì)引起空氣擾動(dòng)Result:Airfromtheinsideofthefumehoodisdrawnout,andfollowsthetechnician后果:空氣從通風(fēng)櫥中溢出,隨操作人員的方向流動(dòng)

FumeHoodscont’d通風(fēng)櫥Allequipment/apparatusmustbeplacedatleast6inchesbehindthefrontofthefumehood所有設(shè)備/儀器須置于離通風(fēng)櫥門至少6英寸Airflowisotherwiseblockedandforcedbackouttowardstheoperator否則阻礙空氣流動(dòng),迫使空氣流向操作人員Allfumehoodsmusthavemarkingindicatingthe6inchposition所有通風(fēng)櫥須標(biāo)記6英寸位置

FumeHoodscont’d通風(fēng)櫥Largepiecesofequipmentmustberaisedafewinchesofftheworksurface大型設(shè)備需舉高,離開工作表面幾英寸Allowsairtotravelunderneaththeequipmenttowardsthelowerbaffleopening使空氣在設(shè)備下面流向低隔板孔

FumeHoodscont’d通風(fēng)櫥DONOTstoreanythinginthefumehoodthatcanbesafelystoredelsewhereinthelab不得在通風(fēng)櫥中存放可在實(shí)驗(yàn)室其它地方安全存放的物品Clutterwillcauseturbulenceofincomingair混亂放置將引起進(jìn)入通風(fēng)櫥空氣的擾動(dòng)

FumeHoodscont’d通風(fēng)櫥DONOTblocktherearbaffleopening不要阻塞后隔板孔Thebaffleopeningisthespacewhereincomingairisexhaustedout隔板孔是進(jìn)氣和排氣通道Ifthisisblocked,theairhasnowheretogo,causesturbulence,andcanresultinairbeingforcedbackouttowardtheoperator如果被阻塞,空氣無處可去,引起擾動(dòng),導(dǎo)致空氣被迫流向操作人員

FumeHoodscont’d通風(fēng)櫥Baffles隔板Thebackpanelsofafumehoodwhichprovideopeningforoutgoingair通風(fēng)櫥后面的檔板提供排氣孔Adjustable可調(diào)節(jié)Lowerbaffle–heavysolvents;Topbaffle–lightsolvents低隔板-易揮發(fā)溶劑,高檔板-易揮發(fā)溶劑

FumeHoodscont’d通風(fēng)櫥DONOTadjustbaffleopeningaftercertificationbyaprofessional專業(yè)人員確認(rèn)后不要調(diào)整隔板孔Bafflesmayonlybeadjustedif:隔板只能在下列情況下調(diào)整Achangeintheroomwillaffectthefunctionofthefumehood房屋的變化可能影響通風(fēng)櫥的功能Differenttypesofchemicals(heavyvs.light)willbeusedinthefumehood通風(fēng)櫥中不同類型的化學(xué)品ThesafetyofficerisinformedBEFOREadjustmentismade調(diào)整之前通知安全員

FumeHoodscont’d通風(fēng)櫥Fumehoodsareservicedevery6monthsbyH.H.Hawkins通風(fēng)櫥每六個(gè)月由H.H.Hawkins維護(hù)一次Cleaningofbafflesandinsideoffumehood(in-house)清潔隔板和通風(fēng)櫥內(nèi)部(實(shí)驗(yàn)室做)Bafflepositioningcheck(H.H.Hawkins)隔板位置檢查SmokeTest(H.H.Hawkins)煙霧測(cè)試Facevelocitycertification(H.H.Hawkins)表面速度核查

FumeHoodscont’d通風(fēng)櫥Threesizesoffumehoods通風(fēng)櫥的三種規(guī)格3ft:Onepersononlycanworkinthefume