p.1 

OAR Box 1168 

Prepped by Ollie Stewart 

Document Number: 

91) ll-C-20 

Docket Number: 

A-89-10 

Printed 4/29/2008 11:23:19 AM Sheet 91 of 131 
P.2 

. ' /• A-89-10 

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r° £1 r0 UNITED STATES ENVIRONMENTAL PROTECT 

KMIU I Office of Air Quality Planning and Standards 

^VlV^-/ Research Triangle Park, North Carolina 2771 1 

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March 22, 1990 

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« uj FEB 1*1991 

EPA AIR DOCKS: 

Dear Reg Neg Committee Member: 

We are faxing 2 attachments. The firs t page is a revised set of tables 

that corrects a computational error we found in the dual mechanical seal 

numbers. Emission factors for no other component have changed. The 

subsequent pages comprise the second attachment and contain information on 

pump seal costs that we have obtained since the last Reg Neg meeting. 

Sincerely, 

Rick Colyer 

Standards Development Branch 

2 Attachments 
•j>— f 

P.3 

/. TTAC0. / 

EMISSION FACTOR MATRICES 

SINGLE MECHANICAL SEAL PUMPS (KG/HR/SOURCE) 

15% 10% 5% 1% 

5000 ppm 0.04185 0.0279 

1000 ppm 0.03015 0.0201 

500 ppm 0.02475 0.0165 

0.01395 0.00279 

0.01005 0.00201 

0.00825 0.00165 

03/22/90 

DUAL MECHANICAL SEAL PUMPS (KG/HR/SOURCE) 

4% 3% 2% 1% 

500 ppm 0.000696 0.000522 0.000348 0.000174 

250 ppm 0.000606 0.000454 0.000303 0.000151 

100 ppm 0.000351 0.000263 0.000175 8.77E-05 

PLANT EMISSIONS (KG/HR) PLANT EMISSIONS (kg/hr) 

500 ppm 0.020184 0.015138 0.010092 0.005046 

250 ppm 0.017574 0.01318 0.008787 0.004393 

100 ppm 0.010179 0.007634 0.005089. 0.002545 

Assumes 29 pumps/plant 

Calculated emissions assume plant's emissions are 25% lower than emissions at stated percentage and leak def ih it ion. 

5000 ppm 

1000 ppm 

500 ppm 

1.21365 

0.87435 

0.71775 

0.8091 

0.5829 

0.4785 

0.40455 

0.29145 

0.23925 

0.08091 

0.05829 

0.04785 

GAS VALVES (KG/HR/SOURCE) 

4% 3% 2% 1% 

1000 ppm 0.000652 0.000503 0.000354 0.000205 

500 ppm 0.000561 0.000422 0.000284 0.000144 

250 ppm 0.000478 0.000364 0.00025 .0.000136 

LIQUID VALVES (KG/HR/SOURCE) 

4% 3% 2% 1% 

1000 ppm 0.00167 0.00134 0.00099 0.00065 

500 ppm 0.00138 0.00112 0.000855 0.000597 

250 ppm 0.00117 0.00096 0.000758 0.000546 

PLANT EMISSIONS (KG/HR) PLANT EMISSIONS (KG/HR) 

1000 ppm 0.87508 0.70216 0.51876 0.3406 

500 ppm 0.72312 0.58688 0.44802 0.312828 

250 ppm 0.61308 0.50304 0.397192 0.286104 

Assumes 402 gas valves/plant Assumes 524 liquid valves/plant 

Calculated emissions assume plant's emissions are 25% lower than emissions at stated percentage and leak definition. 

1000 ppm 

500 ppm 

250 ppm 

0.262104 

0.225522 

0.192156 

0.202206 

0.169644 

0.146328 

0.142308 

0.114168 

0.1005 

0.08241 

0.057888 

0.054672 

1000 ppm 

500 ppm 

250 ppm 

FLANGES (KG/HR/SOURCE) 

4% 3% 2% 1% 0.5% 

0.000772 0.000602 0.000432 0.000262 0.000177 

0.000685 0.000533 0.000382 0.000230 0.000154 

0.000568 0.000445 0.000322 0.000199 0.000138 

PLANT EMISSIONS (KG/HR) 

rf 

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1000 ppm 

500 ppm 

250 ppm 

Assumes 2400 flanges/plant 

Calculated emissions assume plant's emissions are 25% lower than emissions at stated percentage and leak definition. 

1.8528 

1.644 

1.3632 

1.4448 

1.2792 

1.068 

1.0368 

0.9168 

0.7728 

0.6288 

0.552 

0.4776 

0.4248 

0.3708 

0.33 
P.4 

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MAR 20 '90 15=17 RfiDIflN CORP RTP NC P.2 

pt af flTTAC/i. 2-

MEMQRANDUM 

TO: Bob Ajax, EPA/SOB 

FROM: Ed Moretti, Rad1an/RTP 

DATE: March 20, 1990 

SUBJECT: Costs of Single and Double Mechanical Seals for Pumps 

The Installed cost to retrofit a single mechanical seal with a double 

mechanical seal 1s estimated to be $1,370, Including Installation costs of 

$350. The cost for a new double mechanical seal 1s estimated to be $750 

when Installed Instead of a new single mechanical seal. A credit of $560 

for a new single mechanical seal was subtracted from the double seal cost of 

$1,020 to yield a net double seal cost of $460. Labor to Install the new 

double mechanical seal in a shop area was estimated as $290. Actual costs 

for double mechanical seals will vary greatly, depending on the pump shaft 

diameter, the material of construction of the seal, the pump operating 

pressure and temperature, and the physical and chemical properties of the 

material to be pumped. Auxiliary equipment, such as a cooler for control of 

the temperature of the liquid used to flush the seal may be required, at a 

cost of approximately $3501 also, an Individualized pressurized pot system 

may be required to maintain pressure on the Uquid used to flush each double 

seal, at a cost of approximately $300, according to recent vendor . 

information. Cost of a closed-vent system 1s estimated to be $1,780. 

See the enclosures for the sources of the above cost Information. 

Additional cost Information is expected from two other pump or seal vendors. 

Updated from NSPS BIO using BIS Producer Price Index. 

i 

Updated from NSPS BID assuming equivalent percentage change 1n cost as the 

barrier fluid system, for which updated Information was obtained. 
P.5 

MAR 20 '90 15..: 18 RADIAN CORP RTP NC P.3 

TABLE. PUMP SEAL COSTS 

Item Cost (1st quarter 1990) 

Single Mechanical Seal 

Double Mechanical Seal 

Barrier Fluid System for Oouble 

Mechanical Seals 

Closed-Vent System for Double 

Mechanical Seals 

$560 

$1,370 (retrofitted) 

$750 (new) 

$650 (Seal Pot + Cooler) 

$1,780 

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