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# OAR Box 1168
Prepped by Ollie Stewart



### Document

Number: 

# 70 ) lll-B- 5
Docket Number: 

# A-89-1 0

Printed 4/29/2008 11:23:19 AM Sheet 70 of 131P. 2 

# A-89-1 0

II-B- 5

MEMORANDU

M TO : Bo bAjax , EPA/SD B FROM : E d Moretti , Radian/RT P DATE : Marc h20 , 199 0 SUBJECT : Cost s o f Singl e an d Doubl e Mechanica l Seal s fo r Pump s 

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## I 4-199 ! EP A AI R DOCKE T

Th e installe dcos t t o retrofi t a singl e mechanica l sea l wit ha doubl e mechanica l sea l i s estimate dt o b e $1,460 , includin g installatio ncost s o f $440 . Th e cos t fo r a ne w doubl e mechanica l sea l i s estimate dt o b e $83 0 whe ninstalle dinstea do f a ne w singl e mechanica l seal . A credi t o f $56 0 fo r a new

singl e mechanica l sea l wa s subtracte dfro m th e doubl e sea l cos t o f $1,02 0 t o yiel da ne t doubl e sea l cos t o f $460 . Labo r t o instal l th e ne w doubl e mechanica l sea l in a sho pare a wa s estimate da s $370 . Actua l cost s fo r doubl e mechanica l seal s wil l var y greatly , dependin g onth e pum pshaf t diameter , th e materia l o f constructio no f th e seal , th e pum poperatin g pressur e an

d temperature , an

d th e physica l an

d chemica l propertie s o f th e materia l t o b e pumped . Auxiliar y equipment , suc ha s a coole r fo r contro l o f th e temperatur e o f th e liqui duse dt o flus hth e sea l ma y b e required , a t a cos t o f approximatel y $1,240 ; also , a

n individualize dpressurize dpo t syste m ma y b e require dt o maintai npressur e onth e liqui duse dt o flus heac hdoubl e seal , a t a cos t o f approximatel y $300 , accordin g t o recen t vendo r information . Cos t o f a closed-ven t system i s estimate dt o b e $5,190 . Se e th e enclosure s fo r th e source s o f th e abov e cos t information . Additiona l cos t informatio ni s expecte dfro m tw o othe r pum

po r sea l vendors .

__!__

_1

Ite

m Singl e Mechanica l Sea l TABLE .

Cos t (1s t quarte r 1990 ) $56 0 PUM P SEAL COST S Cos t Basi s

Sea l Cos t base dontelephon e cal l t o sea l vendors . P. 3

Doubl e . Mechanica l 

### Sea l $1,46 0 (retrofitted ) Sea l Cos t = $1,020 . (Base don telephon e cal l t o sea l vendors. ) Fiel dInstallatio n= $440 . (Update dfro

m NSP S BI D usin g BL S Produce r Pric e Index. ) $83 0 (new)

Barrie r Flui d System fo r Doubl e Mechanica l Seal s $1,54 0

Closed-Ven t Syste m fo rDoubl e Mechanica l Seal s $5,190/pump Sea l Cos t = $1,020 . (Base do n telephon e cal l t o sea l vendors. ) Singl e Sea l Credit = $560 . Sho pInstallatio n= $370 . (Update d fro m NSP S BI D usin g BL S Produce r Pric e Index. ) Pressurize dReservoi r Syste m = $300 . (Base do ntelephon e cal l t o vendors. ) Syste m Coole r = $1,240 . (Update d fro m NSP S BI D usin g C E Plan t Cos t Indice s fo r Pipes , Valves , Fittings . Base don installatio nof a 12 2 m lengt hof 5. 1 c

m diam . schedul e 4 0 carbo nstee l pip e a t a cos t of $8,04 0 (update dfro m NSP S BI D usin g C E Plan t Cos t Indice s fo r Pipes , Valves , Fittings) , plu s thre e 5. 1 c m cas t stee l plu g valve s an d on e meta l gaug e flame arresto r a t a cos t of $2,33 0 (update dfro

m NSP S BI D usin g C E Plan t Cos t Indice s fo r Pipes , Valves , Fittings) . Thes e cost s includ e connectio nof th e degassin g reservoi r t o a

nexistin g enclose d combustio ndevic e o r vapo r recover y header . Therefore , cos t o f a contro l devic e adde dspecificall y t o contro l th e degassin g vent s i s no t included . Assume s tha t two pump s ar e connecte dt o a singl e degassin g vent .P. 4

TABLE . EQUIPMEN T COS T FORCONTRO L O F EMISSION S FRO M A PUM P SEAL (1989-199 0 Dollars )

Retrofitte dNew Capita l Cost s Dua l Sea l (Footnote s A,B ) 1,46 0 83 0 Barrie r Flui d1,54 0 1,54 0 Ven t System

5,19 0 5,19 0

Tota l 8,19 0 7,56 0

Annua l Cost s 

### 660 25 0 850 16 0 33 0 33

0 25 0 850 16 0 300 Dua l Sea l (Footnot e C ) Barrie r Flui d(Footnot e D ) Ven t Syste m

(Footnot e D ) Quarterl y

LDA R(Footnot e E ) Miscellaneou s Charge s (Footnot e F )

Tota l (Footnot e G ) 2,25 0 1,89 0

A . Retrofitte dsea l costs : Sea l cos t = $1,020 , Fiel dinstallatio ncos t = $440 . B . New sea l costs : Sea l cos t = $1,020 , Sho pinstallatio ncos t = $370 , Single-sea l credi t = $560 . C . Base do

n2-yea r sea l lif e an d1 0 percen t interes t (CRF = 0.58 ) fo r dua l sea l an d10-yea r amortizatio nperio dan d1 0 percen t interes t (CRF = 0.163 ) fo r installatio ncharges . D . Base do

n10-yea r equipmen t lif e an d1 0 percen t interes t (CRF = 0.163) . E . Base do

ninformatio nfro

m a LDA Rcontractor . F . Base do

n4 percen t o f tota l capita l cost s (se e Pag e 8-1 0 o f th e BID) . G . Cost s d o no t includ e credit s fo r recovere dproduct .P. 5

TABLE . NE T ANNUALIZE D COS T O F EQUIPMEN T FO RCONTRO L O F EMISSION S FRO

M PUM P SEAL S (1989-199 0 Dollars )

Retrofitte dNew

Gros s Annualize dCos t ($/yr ) $2,25 0 $1,89 0 Emissio nReductio n(Mg/yr ) (Footnot e A. ) 0.4 1 0.4 1 Produc t Recover y

Credi t ($/yr ) (200 ) (200 ) (Footnot e B. )
Ne t Annualize dCos t ($/yr ) $2,05 0 $1,69 0

A . Averag e Emissio nFacto r fo r ligh t liqui dpump s = 0.049 4 kg/hr/source . Assume s 8,76 0 hour s operatio npe r year . Assume s 95 % reductio ninpum psea l emission s attributabl e t o dua l mechanica l seal . B . Produc t value da t $480/Mg . Update dfro m NSP S AI D usin g Burea uo f Labo r Statistic s Produce r Pric e Index .