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# OAR Box 1313 Preppedby LaTeiaShed



## Document

Number: 

# 11 ) l-B- 4 Docket Number: 

# A-88-0 2

Printed 6/12/20089:03:27

AM Sheet 11 of 99P. 2 

# Rl ® A-88-0 ^ MIDWES TRESEARC H INSTITUT E 13Z-6)
- 4 450 5 Creedmoo rRoa d

Raleigh , N.C

. 2761 2 Telephon e (919 ) 781-575 0



### Date : Marc h29 , 198 5

(Finalize dApri l 19 , 1985 ) 

# I E COP Y FINA L
Subject : Sit e Visit—T& S Bras s an d Bronz e Work s Surve y o f Chromium

Emissio nSources—Chromiu m Platin g EPA Contrac t 68-02-3817 ; ESE O Projec t 85/0 2 MR I Projec t 7711- L From : Bar bDuletsk y &"# > To : A

l Vervaer t ESED/ISB/SS S (MD-13 ) U . S . Environmenta l Protectio nAgenc y Researc hTriangl e Park , N.C . 2771 1 I . Purpos e Th e purpos e o f thi s sit e visi t wa s t o gathe r backgroun dinformatio n o nth e chromiu

m platin g operatio na t th e subjec t plan t and t o determin e th e suitabilit y

o f th e plan t fo r chromiu m emission s testing .



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# S KW II . Plac e an

d Dat e T& S Bras s an

d Bronz e Work s Rout e 4 Ol dBuncomb e Roa d Traveler s Rest , S.C . 2969 0 (803 ) 834-410 2 Marc h7 , 198 5 III . Attendee s T& S Bras s an

d Bronz e Work s Ji m Anderson , Vic e Presiden t o f Manufacturin g Dic k Goughnouer , Manufacturin g Manage r Clif f Theisen , Vic e Presiden t Midwes t Researc hInstitut e (MRI ) Bar bDuletsk y Charle s Heste r IV . Discussio n We arrive da t th e plan t a t 2:2 0 p.m . an d wer e escorte dt o a conferenc e room . Afte r discussin g th e purpos e o f ou r visi t wit hth e thre e attendee s fro

m T& S Bras s an

d Bronz e Work s (T&S) , w e wer e provide dwit h genera l informatio nabou t th e chromiu m platin g operatio na t th e plant . / Principa l Laboratorie s 42 5 Volke rBoulevard , Kansa s City , Missour i 6411 0P. 3

Followin g th e discussion , Mr . Goughnoue r showe du s th e chromium platin g operatio nan

dth e associate dcontro l device . A . Genera l T& S i s a larg e fauce t manufacturer , competin g wit hcompanie s suc ha s America nStandard , Kohler , an dCrane . T& S ha s operate dth e plan t in Traveler s Res t fo r 7 years , havin g move dfro m a previou s locatio ninNew York . B . Proces s Th e decorativ e platin g lin e consist s o f a serie s o f di ptank s containin g nicke l platin g solution , chromiu m platin g solution , an dvariou s cleanin g an

drinsin g solutions . Th e lin e i s service db y anautomati c hois t tha t transfer s th e rack s o f fauce t part s t o eac htank i nsequence . I t take s 4 5 minute s fo r eac hrac k o f part s t o complet e th e platin g cycle . Th e platin g sequenc e i s staggere ds o tha t a rac k come s of f th e lin e ever y 5 o r 6 minutes . Ther e i s on e chromiu m platin g tank o nth e line . Th e tan k measure s 8 fee t (ft ) i nlength , 3 % f t inwidth , 5 f t indepth , an dhold s 1,00 0 gallon s o f platin g solution . Th e solutio ni s compose do f a proprietar y

mixtur e calle dChromatex , manufacture db y McDermitt . Th e mixtur e contain s a hig hrati o o f chromi c aci dt o sulfuri c aci d(highe r tha n th e conventiona l 100: 1 ratio ) an da smal l amoun t o f fluoride . Th e exac t proportion , o f constituent s i s considere db y McDermit t t o b e a trad e secret . T& S use s a naverag e o f 25 0 pound s o f Chromate xeac hmonth . Typically , part s remai ninth e chromiu m platin g tan k fo r 1 ^ minutes , receivin g a plat e thicknes s o f 2 t o 2 % mil . Th e temperatur e o f th e solutio ni s regulate db y a stea m heatin g system

an d1 s normall y

maintaine d a t 110 ° t o 112°F . Th e electrode s 1nth e tank ar e energize db y a singl e transformer/rectifie r set . Althoug hth e voltag e an dcurren t setting s ar e highl y variable , th e averag e operatin g value s ar e 5 volt s (V ) an d2,40 0 t o 2,50 0 ampere s (A) . Durin g th e visi t th e tank wa s operatin g a t 3V an d 1,300A . Th e curren t require dinth e tank depend s o nth e tota l surfac e are a o f part s t o b e plated . Ther e i s a char t inth e platin g are a tha t indicate s th e bes t electrica l setting s fo r rack s o f part s o f variou s shapes . C . Contro l T& S use s a demistin g agen t i nth e chromiu m platin g solutio ncalle d Fumetro l 205T , whic hi s supplie db y M& T Chemicals . Th e agen t create s a laye r o f foa

m o nth e surfac e o f th e solutio nt o inhibi t th e releas e o f hydroge nga s bubbles . Th e chromiu

m platin g tank ha s tw o side-draf t hood s alon g th e 8-foo t lengt ho f th e tank . Aninduce ddraf t fa ndraw s emission s fro m th e tank throug ha circula r duc t t o a fume scrubbe r mounte do nth e roof . Th e scrubbe r i s manufacture db y Duall , Mode l No . 101-F , an dha s a desig nga s flow rat e o f 8,00 0 standar dcubi c fee t pe r minut e (scfm) . Th e flow rat e o fP. 4



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th e scrubbin g liqui dthroughth e system i s 2 4 gallon s pe r minut e (gpm) . Th e treate demission s ar e exhauste dthroughth e fa nan da 3-foo t highstac k befor e exitin g t o th e atmosphere . A diagram

o f th e contro l system , whic h als o treat s emission s fro m a smal l nicke l stri ptank , 1 s presente d1n Figur e 1 . A

descriptio no f th e fume scrubbe r ha s bee nsupplie db y Dual l Industries , Inc . an

di s include da s Attachmen t A . Th e fume scrubbe r wa s installe dwhe nth e plan t wa s buil t i n1978 . Th e reaso nfo r installin g th e system wa s t o reduc e chromiu m ai r emission s t o a leve l tha t woul dcompl y wit hStat e an

dloca l standards . Th e company als o installe da

nextensiv e wastewate r treatmen t system t o trea t th e variou s type s o f meta l finishin g waste s generate da t th e site . Currently , th e plan t treat s th e 2 4 gp m flo w o f scrubbin g wate r use di nth e Dual l scrubbbe r wit hth e othe r wastewate r fro m th e chromiu

m platin g process . D . Conclusion s T& S i s a captiv e plate r performin g decorativ e chromiu m platin g o f nickel-plate dbras s fauce t parts . Emission s fro m th e chromiu

m platin g tank ar e controlle db

y a demistin g agent , sid e draf t hoods , an da fume scrubber . Ther e wer e n o visibl e emission s from th e scrubbe r stac k th e da y o f th e visit . Inle t an

doutle t testin g o f th e scrubbe r i s feasible , however , port s woul dnee dt o b e installed . Plan t personne l ar e no t oppose dt o a tes t bein g performe da t thi s site . Tes t dat a fro m thi s plan t coul db e use d t o determin e bot hth e emission s fro m anautomate ddecorativ e chromiu m platin g tank controlle db y a demistin g agen t an dth e performanc e o f a fum e scrubbe r i ncontrollin g thos e emissions .



### vi\• / P. 5

8,00 0 scf m 

# I t DUALL

# 101- F SCRUBBE R



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y y y y y y y

DIRECTIO N

O F RACK S

Figur e 1 . Emission s contro l system onchromium

platin g tank .



# y-P. 6

Attachmen t A 

# Z>utt£l
INDUSTRIE S PV C Constructed , 100 % Corrosio n Fre e 

# FUM E SCRUBBER S FW-30 0 Vertica l Pack

wit h Blowe r 5 0 0 T O 1 2,00 0 C.F.M . . . plus multiple installations Thi s packe d towe rtyp e scrubbe ri s no t onl ya spac e saver , it' s als o a tru e econom ymodel

. I t incorporate s a built-i n rugge d fa n wit h convenien t exterior , bel t driven , TEFCB B motor
. Durin g installation , th e horizonta l ai rdischarg e ca n b e swivelle d 360 ° befor e sealin g int o permanen t position

. Efficienc yi s equa l t o th e F-10 1 an d th e PT-500

. Compact
- nes s an d versatilit ymak e i t a n unusuall ypopula rmodel

. Thi s FW-30 0 save s thre e way s .. . i n initia l cost , installation , an d i n space . Als o avaiiabi e wit h doubl e pack

. 

# F-10 1 Horizonta l Singl e Filte rPack 5 0 0 T O OVE R 60,00 0 C.F.M . . . plus multiple installations Bein g ou rmos t popula rscrubbe rdesign , thi s compac t 100 % corrosio n resistan t P.V.C

. uni t ha s prove n it s efficienc yi n 4 6 states
. Th e Dual l F-10 1 incorporate s hig h efficiency , lo w maintenanc e filte rmedi a an d th e ope n orific e typ e spra y nozzles , forth e assuranc e o f a thoroughl ysaturate d collectio n chamber

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. 

# F-101- D Horizonta l Doubl e Filte rPack 5 0 0 T O OVE R 60,00 0 C.F.M . . . plus multiple installations A n extr a heavydut yscrubbe rfo rrea l ''tuffies"

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set s o f spray s fo rmor e thoroug h scrubbin g . . . plu s a n effectiv e mis t eliminato ra t th e ai rout - let

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. 

# PT-50 0 Vertica l Pack 5 0 0 T O OVE R 30,00 0 C.F.M . . .plus multiple installations Th e uprigh t PT-50 0 i s th e spac e saver . Thi s scrubbe ri s a vertica l packe d towe rtyp e designe d t o fi t int o restricte d space s wher e floo rspac e i s a t a premium

. It s efficienc yi s equa l t o th e F-101 , an d als o 100 % corrosion-free

. Ai rflo w i s u p throug h a thoroughl ywate rsaturate d be d o f filte rmedia

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# "DuaCC x.

INDUSTRIES , INC

. 70 0 S

. McMilla n Street , Owosso

. Michiga n 48867

. Ph

. (517 ) 725-818 4