cisternas para combustibles licuados

CISTERNAS PROPANO

Relating Natural Gas & Propane Storage

11 gallons propane equals 1 MMbtu

To allow for expansion of the liquid propane, tanks are never filled to 100%. At 60° F, the maximum filling density is about 85%. The chart and graph below show common tank sizes and net fuel storage capacities in gallons and "millions of btus" (MMbtu).

3,900 84"16' - 2 3/4"

4' - 4 1/4'' 5,893

6,565 84"25' - 10 1/

8' - 0'' 9,723

12,000 84"44' - 10 1/2

27'- 0'' 17,301

18,000 109,346" 40' - 11 3/8 21'- 0'' 26,107

30,000 109,346" 65'- 11 3/8' 46'- 0'' 43,539

30,000 131,875"46'- 9 7/8''

10'- 11'' 43,144

45,000 131,875" 68'- 6 3/8'' 46' - 7'' 64,99460,000 131,875" 90'- 0'' 86,66290,000 131,875" 133' - 2 1/4 111'- 0'' 130,213

Tank Trim

Most LPG storage tanks in standby-plant service are steel, non-refrigerated pressure vessels. Tanks are available in many sizes for both aboveground and underground service. New propane tanks are built to ASME standards and are designed for at least 250 psig working pressure. Common tank sizes and approximate dimensions are shown in the chart below. Larger industrial and commercial applications generally use 18,000 gallon and larger tanks.

Capacity in US

Water Gals

Outside Diameter

Overall Height

Engineered Pier Spacing

End Tank To

Centerline of Pier

Estimated Weight

Lbs

5' - 11 1/4''

8' - 11 1/4''

8' - 11 1/4''

9'- 11 11/16''

9'- 11 11/16''

24'- 11 7/8''

10' - 11 11/16''68' - 2

1/8''10' - 10 15/16''11'- 1 1/8''

Required tank trim includes relief valves, excess flow valves and gauges for temperature, pressure and liquid level. Remote / automatic valve features are often required or desired to provide enhanced product control and safety

CISTERNAS LPG

D. LPG Transport Tank

LPG Storage Tank & LPG Transport Tank Specifications

• Plate thickness is in standard design of ASME• Plat Shell & Hemispherical using ASTM A 516 GRADE 70• Support Tank using ASTM A-36 or JIS G 3101 / SS-400

BULK PLANT LPG STORAGE TANK

D (mm) L1 (mm) L2 (mm) L3 (mm) V (mm) H (mm)

*22 5050 2440 5410 4040 2300 2200 2900 10

*35 6740 2440 8210 6860 4000 2200 2900 10

35 7200 2440 8500 6060 4000 2200 2900 10

45 9210 2440 10520 8080 5600 2200 2900 12

50 10735 2440 11540 9100 5600 2200 2900 13

*50 10275 3150 7340 5600 3400 2900 3670 13

*70 13130 3150 10150 8400 5600 2900 3670 13

*115 20030 3150 15750 14000 7800 2900 3670 13

Designed and constructed according to AD-Merkblatter for working pressure 17,5 Kg/cm2. Hydrostatically tested at 26,25 Kg/cm2, T junction and longitudinal welds 100% X-rayed. Circumferential welds 25% X-rayed. Shot blasted and painted finish, inspection and nozzles as per owner requirement.

Volume (M3)

Weight (KG)

Thickness (mm)

180 24400 3500 20000 16500 11500 3000 4020 14

DOMESTIC TANK

D (mm) L1 (mm) L2 (mm) L3 (mm) V (mm) H (mm)

1750 375 1000 2470 1880 1360 630 1390 4.8

3000 650 1200 2900 2109 1400 675 1620 5.7

5000 1030 1200 4740 4040 3200 675 1620 5.7

10000 1900 1650 5090 4180 3300 900 2050 7

Cylindrical body fitted with two elliptic domed ends, with joggle and hot pressed within the normalizing range, made from fine grain normalised steel plates, assembled by submerged arc welding process. Tanks mounted on welded legs and provided with lifting lugs, earthling bolt, data plate and protection cover with locking facility. T-junction and longitudinal welds 100% X-rayed, circumferential welds 25% X-rayed. Designed and constructed for working pressure 17,5 Kg/cm2, sand blasted, metal coated and painted. Finish, inspection and fittings as per schedule.

Volume (M3)

Weight (KG)

Thickness (mm)

Wall thickness calculation of Cylinder

according ASME

Type of shell Cylinder

Design pressure P 0.5

Design temperature T 220 ⁰CMaterial description A-106 Gr. B

Yield stress, design temperature S 175.2

Specific gravity ρ 7850

Outside diameter 219.1 mm

Length tangent to tangen L 2256 mmNominal wall thickness t 8.2 mmCorrosion allowance Ca 1 mmTolerance tol 1.03 mmJoint efficiency E 1Semi angle at apex cone α 0 degree (For cone only)Design Code ASME (Section VIII , Div. 1)

Allowable stress S = 175.2

Corroded thickness 6.17 mm

N/mm2

N/mm2

kg/m3

Do

N/mm2

tc = t - Ca - tol

Corroded inside radius 103.38 mm

Required wall thickness 0.30 mm

2.33 mm

10.09

t is OK

Weight 96.22 kg

Enclosed volume

Wall thickness calculation of Cone

according ASME

Type of shell Cone


Design temperature T 220 ⁰CMaterial description A - 106 Gr. B




Length tangent to tangen L 2256 mmNominal wall thickness t 8.2 mmCorrosion allowance Ca 1 mmTolerance tol 1.03 mmJoint efficiency E 1Semi angle at apex cone α 0 degree 0.00 rad.Design Code ASME (Section VIII , Div. 1) (For cone only)



206.76 mm


R = Do/2 - tc

tr = (P*R) / ( S*E - (0.6*P))

Nominal required thickness

trn = tr + Ca + tol

Max. Allowable Working Press. MAWP = S*E*tc / (R + (0.6*tc)) N/mm2

Thickness analysis, t > trn ?

N/mm2

N/mm2

kg/m3

Do

N/mm2

tc = t - Ca - tol

Corroded inside Diameter

D = Do - 2*(tc / cos α)

tr = P*D / (2*cosα*(S*E - 0,6*P))


2.33 mm

10.09

t is OK

Weight

Enclosed volume

Wall thickness calculation of Sphere

according ASME

Type of shell SphereDesign pressure P 0.5Design temperature T 220 ⁰CMaterial description A - 106 Gr. B



Outside diameter 219.1 mmL 2256 mm

Nominal wall thickness t 8.2 mmCorrosion allowance Ca 1 mmTolerance tol 1.03 mmJoint efficiency E 1

α 0 degreeDesign Code ASME (Section VIII , Div. 1)



Corroded inside radius 103.38 mm


2.18 mm

20.67

tr = P*D / (2*cosα*(S*E - 0,6*P))


trn = tr + Ca + tol

Max. Allowable Working Press. MAWP = 2*S*E*tc*cosα / (D + (1,2*tc*cosα)) N/mm2


N/mm2

N/mm2

kg/m3

Do

Length tangent to tangent

Semi angle at apex cone

N/mm2

tc = t - Ca - tol

R = Do /2 - tc

tr = P * R / (2*S*E - 0,2*P)


trn = tr + Ca + tol

Max. Allowable Working Press. MAWP = 2*S*E*tc / (R + (0,2*tc)) N/mm2

20.67

t is OK

Weight

Enclosed volume

Wall thickness calculation of heads

according ASME

Type of shell Ellipsoidal






Nominal wall thickness t 8.2 mmSee below mm Only for torisph.

See below mm Only for torisph.

Corrosion allowance Ca 1 mmTolerance tol 0 mmJoint efficiency E 1

Max. Allowable Working Press. MAWP = 2*S*E*tc / (R + (0,2*tc)) N/mm2


N/mm2

N/mm2

kg/m3

Do

Inside radius knuckle nom.

rn

Inside radius dish nominal

Ln

Design Code ASME (Section VIII , Div. 1)



Inside diameter 204.70 mm

Inside radius knuckle r = (not required)

Inside radius dish L = (not required)

(Constant K) 1.00 mm


1.29 mm

12.24

t is OK

Weight

Enclosed volume

Type of shell Torispher.






Nominal wall thickness t 8.2 mm0 mm

0 mm

Corrosion allowance Ca 1 mm

N/mm2

tc = t - Ca - tol

D = Do - 2*tc

K = (1/6) * (2 + (D / (2*h)2) with h = D/4

tr = P*D*K / (2*S*E - 0,2P)


trn = tr + Ca + tol

Max. Allowable Working Press. MAWP = 2*S*E*tc / (K*D + 0,2tc) N/mm2


N/mm2

N/mm2

kg/m3

Do


rn


Ln

Tolerance tol 0 mmJoint efficiency E 1Design Code ASME (Section VIII , Div. 1)




Inside radius knuckle 1.00 mm

Inside radius dish 1.00 mm

(constant M) 1.00


1.00 mm

1033.97

t is OK

Weight

Enclosed volume

Type of shell Kloepper

Design pressure P 0.5 ( = 1 MPa = 10 Bar )

Design temperature T 220 ⁰C

Material description A - 106 Gr. B




Nominal wall thickness t 8.2 mmsee below mm only for torisph.

see below mm only for torisph.


N/mm2

tc = t - Ca - tol

D = Do - 2*tc

r = rn + Ca + tol

L = Ln + Ca + tol

M = 0,25 * (3 + (L/r)0,5)

tr = P*L*M / (2*S*E - 0,2P)


trn = tr + Ca + tol

Max. Allowable Working Press. MAWP = 2*S*E*tc / (L*M + 0,2tc) N/mm2


N/mm2

N/mm2

kg/m3

Do


rn


Ln

Tolerance tol 0 mmJoint efficiency E 1Design Code ASME




21.91 mm

219.10 mm



(constant M) 1.52


1.48 mm

7.48

t is OK

Weight

Enclosed volume

Type of shell

Design pressure P 0.5 ( = 1 MPa = 10 Bar )


N/mm2

tc = t - Ca - tol

D = D0 - 2*tc

Inside radius knuckle nom. rn = 0.1 * D0

Inside radius dish nominal Ln = D0

r = rn + Ca + tol

L = Ln + Ca + tol

M = 0,25 (3 + √L/r)

tr = P*L*M / (2*S*E - 0,2*P)

Nominal required thickness trn = tr + Ca + tol

Maxim. Allow. Working Press. MAWP = 2*E*S*tc / (M*L + 0,2*tc) N/mm2

Thickness analysis, t > tr,n ?

Korbbogen

N/mm2




Nominal wall thickness t 8.2 mmsee below mm


Corrosion allowance Ca 1 mm only for torisph.

Tolerance tol 0 mmJoint efficiency E 1Design Code ASME

Allowable stress S 175.20



33.74 mm

Inside radius dish nominal 175.28 mm



(constant M) M = 0,25 * (3 + √L/r) 1.31


1.33 mm

10.83

t is OK

Weight

Enclosed volume

N/mm2

kg/m3

Do


rn


Ln

N/mm2

tc = t - Ca - tol

D = D0 - 2*tc

Inside radius knuckle nom. rn = 0.154 * D0

Ln = 0.8 * D0

r = rn + Ca + tol

L = Ln + Ca + tol

tr = P*L*M / (2*S*E - 0,2P)

Nominal required thickness trn = tr + Ca + tol

Maxim. Allow. Working Press. MAWP = 2*E*S*tc / (M*L - 0,2tc) N/mm2

Thickness analysis, t > tr,n ?

Enclosed volume

2161.97214.16

Wall thickness calculation of Cylinder

according Dutch Rules

Type of shell Cylinder

Design pressure 0.5 ( = 1 MPa = 10 Bar )

Design temperature 220 ⁰C

Material description A-106 Gr. B

Yield stress, design temperature 175.2



Length tangent to tangen L 2256 mm (If not a sphere)

Nominal wall thickness 8.2 mm

Corrosion allowance Ca 1 mmTolerance tol 1.03 mmStrength reduct. coëfficie z 1Semi angle at apex cone α 0 degree (For cone only)

Design Code

Allowable stress 117.38

Calculation thickness 6.17 mm

Pd N/mm2

Td

Re(Td) N/mm2

kg/m3

De

dn

Dutch Rules

f = f1 = 0.67 * Re(Td) N/mm2

d = dn - Ca - tol



2.50 mm

0.07350

dn is OK

Weight

Enclosed volume

Wall thickness calculation of Cone


Type of shell Cone






Outside diameter 219.1 mmL 2256 mm (If not a sphere)


Corrosion allowance Ca 1 mmTolerance tol 1.03 mm

z 1α 0 degree 0.00 rad.

Design Code(For cone only)




Di = De - 2*d

dr = Pd*De / (2*z*f +(Pd))

Nominal required thickness drn = dr + Ca + tol

Required strength reduction

zmin = Pd*(Di + d) / (2*d*f)

Thickness analysis, d >dr ?

Pd N/mm2

Td

Re(Td) N/mm2

kg/m3

De


dn

Strength reduct. coëfficientSemi angle at apex cone

Dutch Rules

f = f1 = 0.67 * Re(Td) N/mm2

d = dn - Ca - tol

Di = De - 2*d



2.50 mm

0.073

dn is OK

Weight

Enclosed volume

Wall thickness calculation of Sphere


Type of shell Sphere






Outside diameter 219.1 mmL 2256 mm (If not a sphere)


Corrosion allowance Ca 1 mmTolerance tol 1.03 mm

z 1α 0 degree (For cone only)

Design Code




Di = De - 2*d

dr = Pd*De /((2*z*f +(Pd))*cosα



zmin = Pd*(Di + d*cosα) / (2*d*f*cosα)


Pd N/mm2

Td

Re(Td) N/mm2

kg/m3

De


dn

Strength reduct. coëfficientSemi angle at apex cone

Dutch Rules

f = f1 = 0.67 * Re(Td) N/mm2

d = dn - Ca - tol

Di = De - 2*d


2.26 mm

0.03675

dn is OK

Weight

Enclosed volume

Wall thickness calculation of heads

according ASME

Type of shell Ellipsoidal








dr = Pd*De /((4*z*f )+(Pd))



zmin = Pd*(Di + d) / (4*d*f)


Pd N/mm2

Td

Re(Td) N/mm2

kg/m3

De

dn



Corrosion allowance Ca 1 mmTolerance tol 0 mm

z 1

Design Code


(ellipsoidal only) 0.4595

31.24 mm

199.15 mm

(Constant 1) 2.29

(Constant 2) 1.07

(Constant 3) 1.51

265.09

Allowable stress dish 117.38

0.51 mm

1.51 mm

0.07

0.42 mm

1.42 mm

0.06

OK OK dn is OK


ri1n


ri2n

Strength reduct. coëfficient

Dutch Rules

d = dn - Ca - tol

k1 = 2*(he-dn) / (De-2*dn)with he = De/4

Inside radius knuckle nom. ri1n = 0.25 * (De-2*dn) * (1+k1

2 - (1-k1) * √(1+k12)

Inside radius dish nominal ri2n = 1/(4*k1) * (De-2*dn) * (1+k1

2 + (1-k1) * √(1+k12)

C1 = 101.125*(1.6-log(100*(ri1

/ri2

)))*(1-(d/(1.1*ri1

)))

C2 = 1 + 0.306*ln(1+(d/ri1)) + 0.1574*ln2(1+(d/ri1))

C3 = min (√C1, 2)

Allowable stress knuckle fe = C3 * Re(Td) N/mm2

f2 = 0.67 * Re(Td) N/mm2

Required wall thickn. knuckle drk = Pd*De*C1*C2 / (2*z*fe)

Nominal required thickness k. drkn = drk + Ca + tol

Required strength reduction kn.

Zmin,k = Pd*De*C1*C2 / (2*d*fe)

Required wall thickn. dish

drd = 2*Pd*ri2 / (4*z*f2 - Pd)

Nominal required thickness d. drdn = drd + Ca + tol

Required strength reduct. dish Zmin,d = Pd*(2*ri2 + d) / (4*d*f2)

Analysis, z > zmin,k and zmin,d

?

Stability analysis required ?

Weight

Enclosed volume

Type of shell Torispher.








no value mm only for torisph.

no value mm only for torisph.


z 1

Design Code

Warning:




(Constant 1) 312.94

(Constant 2) 2.34

(Constant 3) 2.00

350.40


Pd N/mm2

Td

Re(Td) N/mm2

kg/m3

De

dn


ri1n


ri2n


Dutch Rules

0.05*ri2 ≤ ri1 ≤ 0.3*ri2

d = dn - Ca - tol

r1i = r1in + Ca + tol

r2i = r2in + Ca + tol

C1 = 101.125*(1.6-log(100*(ri1

/ri2

)))*(1-(d/(1.1*ri1

)))

C2 = 1 + 0.306*ln(1+(d/ri1)) + 0.1574*ln2(1+(d/ri1))

C3 = min (√C1, 2)



114.51 mm

115.51 mm

15.903

0.00 mm

1.00 mm

0.001

NOT OK

Weight

Enclosed volume

Type of shell Kloepper











Tolerance tol 0 mmz 1

Design Code

f2 = 0.67 * Re(Td) N/mm2

Required wall thickn. knuckle drk = Pd*De*C1*C2 / (2*Z*fe)


Required strength reduction kn. Zmin,k = Pd*De*C1*C2 / (2*d*fe)

Required wall thickn. dish drd = 2*Pd*ri2 / (4*Z*f2 - Pd)




?

dn is NOT ENOUGH ; change dn


Pd N/mm2

Td

Re (Td) N/mm2

kg/m3

De

dn


ri1n


ri2n


Dutch Rules


21.91 mm

219.10 mm



(Constant 1) 2.94

(Constant 2) 1.10

(Constant 3) 1.71

300.34


0.59 mm

1.59 mm

0.082

0.47 mm

1.47 mm

0.066

YES YES dn is OK

Weight

d = dn - Ca - tol

Inside radius knuckle nom. ri1n = 0.1 * De


ri2n = De

ri1 = ri1n + Ca + tol


C1 = 101.125*(1.6-log(100*(ri1

/ri2

)))*(1-(d/(1.1*ri1

)))

C2 = 1 + 0.306*ln(1+(d/ri1)) + 0.1574*ln2(1+(d/ri1))

C3 = min (√C1, 2)


f2 = 0.67 * Re(Td) N/mm2

Required wall thickn. knuckle drk = Pd*De*C1*C2 / (2*Z*fe)







?


Weight

Enclosed volume

Type of shell











z 1

Design Code


33.74 mm

175.28 mm



(Constant 1) 1.90

(Constant 2) 1.06

(Constant 3) 1.38

241.51

Korbbogen

Pd N/mm2

Td

Re (Td) N/mm2

kg/m3

De

dn


ri1n


ri2n


Dutch Rules

d = dn - Ca - tol

Inside radius knuckle nom. ri1n = 0.154 * De

Inside radius dish nominal ri2n = 0.8 * De



C1 = 101.125*(1.6-log(100*(ri1

/ri2

)))*(1-(d/(1.1*ri1

)))

C2 = 1 + 0.306*ln(1+(d/ri1)) + 0.1574*ln2(1+(d/ri1))

C3 = min (√C1, 2)



0.46 mm

1.46 mm

0.064

0.38 mm

1.38 mm

0.053

YES YES dn is OK

Weight

Enclosed volume

f2 = 0.67 * Re(Td) N/mm2

Required wall thickn. knuckle drk = Pd*De*C1*C2 / (2*z*fe)







?


106.461448.52

50.680.62

110.271.81

0.790.461.060.01

-0.45-5.551.640.70

0.71430.65540.01181.0836

0.81160.34350.00561.0576

Torispherical headDIN 28011

Semi ellipsoidal headDIN 28013

Standard-type/flat dished he

Hemispherical head

Convex disc

R = Do

r = 0,1 x Do

h1 >= 3,5 x s

h2 = 0,1935 x Do - 0,455 x s

h3 = h1 + h2

R = 08 x Do

r = 0,154 x Do

h1 = 3 x s

h2 >= 0,255 x Do - 0,63 x s

h3 = h1+ h2

R = Do (standard-type head)R = 1,3 x Do (flat dished head)

r = 15-50 mm, on request > 50 mmh1 >= 3,5 x s

h2 = dished height

h3 = h1 + h2

Di = Do - 2 x s

R = 0,5 x Di

h1 = as per specification

h2 = R

h3 = h1 + h2

Form R = Do

h2 = 0,134 x Do

Flat head

r = 15 - 50 mm

Plate-type head

Diffuser head

r = max. 100 mm

Cone

on request

Ellipsoidal head

Form R = 0,8 x Do

h2 = 0,176 x Do

Form R => Do on request possible

h1 >= 3,5 x s

h3 = h1 + h2

R = Di

h2 = 0,134 x Di

R >= Do

h1 >= 3,5 x s

Di = Do - 2 x s

R = 0,9 x Di

r = 0,17 x Di

h1 = as per specification

h2 = 0,25 x Di

h3 = h1 + h2

Korbbogen head (ellipsoidal) acc. DIN 28013

Measurement

D = outside dimension s = wallthickness before forming r = inside knuckle radius (0,154D)R = inside radius ( R=0,8D)h = Straight flange height (3 x s)H = total height (-0,251D + s + h)

Datos útiles:

Klopper head (ellipsoidal) acc. DIN 28011

Dimensionamiento

- Capacidad: V = 0,13 Di3 (sin h)

- Superficie del disco: S = (Õ/4) *D2 d

r1 = da

r2 = 0,1 da

CISTERNAS DE COMBUSTIBLE

Underground Tank Standard

cisternas para combustibles licuados

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