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CPO EXAM GUIDE QUESTIONS WITH CORRECT ANSWERS
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CPO EXAM GUIDE QUESTIONS WITH CORRECT ANSWERS
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CPO EXAM GUIDE QUESTIONS WITHCORRECT ANSWERS
reducingshazardss-sans✔✔preventionsissthesbestsoption
waterscontaminations-
sans✔✔1.sfecalsrelateds(crypto,sgiardia,sshigella,sescoli,sadenovirus,shepatitissA)s
2.snon-
fecals(pseudomonassaeruginosa,sswimmer'ssear,slegionellaspneumophila,smolluspioxvirus
,splanter'sswarts,sathlete'ssfoot)
CDCs-sans✔✔CentersforsDiseasesControlsPrevention
solidsfecalsincidents-sans✔✔removespeople,spHsbetweens7.2-
7.5,sraiseschlorines2.0sppm,s30sminutesbreak
diarrheas-sans✔✔removespeople,spHs7.2-
7.5,sraiseschlorinestos20.0sppms(12.75shrs),saftersbackwashsfilters,sraiseschlorinestosnormal,s
thensre-openspool
handlingscontaminatedsmaterials-
sans✔✔wearsgloves,sremovesexcess,sdisinfectsallssurfaces,sfollowsguidelinessofsdisposals&
swashshands
preventionspracticess-sans✔✔1.smaintainspropersdisinfectantslevelssatsallstimes
2.shaveskidssusesbathroomsbefore
3.sswimmer'ssshowersbeforesswimming
4.sprohibitsswimmingswithswounds/sores
5.sworkswithslocalshealthsdepartment
disinfections-
sans✔✔akassanitation=destroying smicroorganisms;sconsiderschemicalssafetys&sstoragess
paceswhensconsideringsasdisinfectant
oxidations-
sans✔✔processsofschangingsaschemicalsstructuresofscontaminants stosremovesfromswaters(t
urnsintossimplesgases);saffectedsby:spH,stemperature,senvironmentalswastess&sbatherscont
amination
whatsissthesmostscommonsdisinfectantsuseds-sans✔✔chlorine
chlorinescompoundss-
sans✔✔1.sorganics(trichlorsandsdichlor);scontainscyanuricsacid;sstabilizeds
, 2.sinorganics(calciumshypochlorite,ssodiumshypochlorite,slithiumshypochlorite,schlorinesgas
);snoscyanuricsacid;sunstabalized,sbutscansbesstabilizedswithsacid;ssensitivestoslight
cyanuricsacids-sans✔✔30-
50sppm;sdecreasessbreakdownsofschlorinesbecausesUVsradiations(10xsassstrong)
chemistrysofschlorines-
sans✔✔whensaschlorinescompoundsissintroducedstoswatersthissleadsstosaschemicalsreaction
swhichscreatesseithershypochloroussacids(killssmicroorganisms)sorshypochloritesions(inactiv
esformsofschlorine)
typessofschlorines-sans✔✔frees(availablesforsdisinfection),scombined,sorstotal
DPDstestss-
sans✔✔measuresofsfreeschlorine;skitssorsstripstests;sseesdifferentsshadessofsreds
acceptablesrangesofsfreeschlorines-sans✔✔1.0-5.0ppm
combinedschlorines(chloramines)s-
sans✔✔freeschlorinesplussammoniasorsnitrogenscontainingsorganicscompoundss(chemicals
bond);snoslongersanseffectivesdisinfectants(mayscausesodor,setc.);sidealsamountsshouldsbes
0s(allowedsamount=s0.2sppmsinspoolssors0.5sppmsinsspas)
bromines-sans✔✔disinfectantsinspools/spas-goodsalgicidalsproperties--
notsassgoodsoxidizer--tabletssorssodiumsbromine
ozones-sans✔✔disinfectantsinspools/
spas;smustsbesusedswithschlorinesorsbromine;scan'tsbestransported;sleavessnosresiduesinswa
ter;sproducedsbysultrasvioletslightsorscoronasdischarge
watersbalances-
sans✔✔correctsratiosofsmineralscontentsandspHstospreventspoolswatersfromsbeingscorrosive/
scaly;sprotectsspoolsfromschemicalserosion
factorssthatscontributestoswatersbalances-
sans✔✔pH,salkalinity,scalciumshardness,stemperature, stotalsdissolvedssolids
pHs-
sans✔✔proteinsshydrogen; smostsimpactsonsbalancedswater;smeasuredsbysacidsvs.sbase:s0-
14s(0=acidic,s14=base,s7=neutral);s6shass10xsthespHsofs7,s7shass10xsthespHsofs8,setc.
poolspHs-
sans✔✔shouldsbesslightlysabovesneutral;smostscompatiblesrange=7.2sands7.8;sideal=7.4sa
nds7.6;slowersthespH,sthesmoreseffective
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