Gasoline Roof Landings to NJDEP (02-07) - Final_1

7/23/2019 Gasoline Roof Landings to NJDEP (02-07) - Final_1

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Generic Floating Roof Landing Emissions Equations

Section 7.1.3.2.2 - Roof Landings

Supporting Equations:

B = product specifc Antoine's Constant

All meteorological data imported rom Tanks v4.0.9d

Section 7.1.3.2.2.1 - Standing dle Losses

Standing dle Loss from nternal Floating Roof !an"s #it$ a Liquid %eel&

Equation '2-1( Equation '2-13

Where: Where:

= Total Emissions in l!s" = #a$imum standing idle loss% l

= num!er o da&s D = tank diameter t"

= vapor e$pansion actor = eigt o te product

P = product true vapor pressure ()*" = product densit& l!s+gal"

= volume o te vapor space cu t"

R = *deal ,as Constant -0./-"T = temperature ankin" degrees 1 2 430"

= product vapor molecular eigt

= saturation actor

* If equation #2-16 > equation #2-13, use equation #2-13 for standing loss

Standing dle Loss from )rain )r* !an"s&&

Equation '2-22 Equation '2-2+:

Where: Where:

= Clinage 5oss = #a$imum )tanding *dle 5oss% l!s per

= clingage actor 0.-6" P = product true vapor pressure ()*"

D = tank diameter t" = volume o te vapor space cu t"

= product densit& l!s+gal" R = *deal ,as Constant -0./-"

Area = T = temperature ankin" degrees 1 2 43


D = tank diameter t"

E7uations taken rom AP-42, Chapter 7,

Tavg

o" = Tavg

o1" 2430"

8elta Tv = 0. 8elta T" 2 0.0: ; alpa ; *

< e = 8elta T

v + T

avg" ; - 2 0.6 ; B ; (" + T ; (

atm (""

< s = - + - 2 0.06/ ( ;

v"

(atm

= -4./ psia

LSL

= nd *

e*!"

$ %&'(*)

$ *

sL

SLa+ = .*/2*h

le*W

l

LSL

LSLa!

nd

" e

h#e

$ #

% &

'&

" s

L0 = 63*W

i *!rea( L

SLa+ = 6*!"

$ %&'(*)

$

Lc LSLa!

Cs

% &

$ #

(*;8" + 4'

&



= product densit& l!s+gal"

** If equation #2-22 > equation #2-2, use equation #2-2 for standing loss

Section 7.1.3.2.2.2 - Filling Losses

Filling Loss from nternal Floating Roof !an"s #it$ Liquid %eals

Equation '2-2(

Where:

= Total 1illing 5oss

P = product true vapor pressure ()*"


R = *deal ,as Constant -0./-"

T = temperature ankin" degrees 1 2 430"


S , saturation factor .(/

Filling Loss from )rain )r* !an"s

Equation '2-2(

Where:

= Total 1illing 5oss

P = product true vapor pressure ()*"


R = *deal ,as Constant -0./-"

T = temperature ankin" degrees 1 2 430"

= product vapor molecular eigtS , saturation factor .10/

$ #

L4L

= !" $ %&'(*)

$ *S

L(L

% &

'&

L4L

= !" $ %&'(*)

$ *S

L(L

% &

'&



s per landing episode"

landing episode"

0"



Landing Event

Tank Start Date End Date Gasoline RVP Drain Dry?

1 1/1/2007 1/5/2007 10 0.01 no 4 138,5442 1/1/2007 1/2/2007 10 0.01 no 1 42,267

3 1/1/2007 1/2/2007 10 0.01 no 1 92,363

4 1/1/2007 1/2/2007 8 0.01 no 1 98,607

5 1/2/2007 1/3/2007 11 2.00 no 1 8,482

ProductHeight

Days Out ofloat

Tank Va!or S!ace"cu ft#



Roof Height TVP R

138,198 210 4.00 5.20 66.0 514.7 0.135 0.48 10.73142,146 124 3.50 5.20 66.0 514.7 0.135 0.51 10.731

92,209 140 6.00 5.20 66.0 514.7 0.135 0.38 10.731

98,352 180 3.88 3.94 68.0 514.7 0.104 0.55 10.731

2,827 60 3.00 5.20 66.0 514.7 0.135 0.60 10.731

$ctual Va!orS!ace "cu ft#

TankDia%ter &

v T "oR# 'e

's



5.60 2201 14,571 1222 5152 2,201 5,152 ()*+*5.60 180 5,080 426 1571 180 1,571 ,)(+,

5.60 291 6,476 543 3438 291 3,438 *)(-.

5.60 275 10,705 898 2860 275 2,860 *),*/

5.60 14 237,888 100 105 14 105 ,-0

1l

E2uation3-4,5

E2uation3-4,*

E2uation3-4--

E2uation3-4-*

TotalStandingLosses

illingLosses

E2uation -4-5

TotalE%issions



Roof Landing Position

Tank eet 6nches

, 210 4 0 4.00 138,544

- 124 3 6 3.50 42,267

* 140 6 0 6.00 92,363

/ 180 3.5 4.5 3.88 98,607

+ 60 3 0 3.00 8,482

Dia%eter"ft#

Roof Height"feet#

Volu%e 7nderRoof "cu ft#



P P* Delta T

Gasoline RVP !sia 8 50 l

7.0 3.50 0.10 63.4 46.1 54.7 17.3 514.7

7.8 3.94 0.12 63.4 46.1 54.7 17.3 514.7

8.3 4.22 0.13 63.4 46.1 54.7 17.3 514.7

10.0 5.20 0.18 63.4 46.1 54.7 17.3 514.7

11.5 6.07 0.22 63.4 46.1 54.7 17.3 514.7

13.0 6.90 0.27 63.4 46.1 54.7 17.3 514.7

;OTES

Site S!ecific &et Data for ;e<ark) ;= fro% Tanks ver> />0>.d

Product Pro!erties o9tained fro% $P4/-) ha!ter () Ta9le (>,4-

Paint Solar $9sor!tance actor o9tained fro% $P4/-) ha!ter () Ta9le (>,45

E2uation o9tained fro% $P4/-) ha!ter () igure (>,4,+

R @ 6deal Gas onstant

T max

T min

T avg

T avg

o o o o oR



How often does a facility land its tank roofs. (This can range from once or tw

Why does a facility land its roofs? (this can be for inspection and maintenance,

How often to facilities clean their tanks? (This can range from e"ery ten years

#f facilities clean their tanks more often than re$uired for inspection and mai

%acilities should also be reminded that they need to report landing loss emissi



ce per year or less to around once per week or more)

seasonal R! changes or other product changes, blending operations, leasing to

for inspection and maintenance to se"eral times per year when a tank changes se

tenance, why?

ns in addition to the standing and working losses from T&'.



new customers, or when they ha"e to ship product that they store but do not own

r"ice to an incompatible product or is leased to a new customer)



).

Gasoline Roof Landings to NJDEP (02-07) - Final_1

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