Nozzle reinf calc(rough).xls

NOZZLE NECK THICKNESS AND REINFORCEMENT CALCULATIONS : MDC No. : 896 Client : RIL Page : Job No. : 130339 Consultant : Chemtex Rev : Made By : JSB Eqpt. No. : 1222-H01 Date 2.00 Nozzle Mark [ ] A1 Nominal Size of Nozzle [ ] 22" Nozzle Location [ ] Tori-Dish end Distance between the centre lines of Vessel & Nozzle L' [ in ] 0 Internal Design Pressure Pi [ psi(g) ] 110.661 External Design Pressure Pe [ psi(g) ] 90.321 Design Temperature Td [ °C ] 650 Internal Corrosion Allowance on Vessel ci [ in ] 0.000 External Corrosion Allowance on Vessel ce [ in ] 0.063 Material of Vessel Part [ ] SA 516 Gr.70 Allowable Stress of Vessel Part at Td Sv [ psi ] 18800 Inside Radius of Shell or Inside Crown } Radius of Head (Uncorroded) }................................ Ru [ in ] 95.98 Inside Knuckle Radius (Uncorroded) ru [ in ] 6.496 Minimum Thickness of Vessel Part (Uncorroded) tu [ in ] 1.063 Nominal Thickness of Vessel Part (Uncorroded) tvu [ in ] 1.260 Nominal Thickness of Vessel Part (Corroded) tv [ in ] 1.197 Minimum Thickness as per UG-16 (b) t' [ in ] 0.063 Head Thickness under Internal Pressure [Per 1-4 (d)] Inside Crown Radius (Corroded) = Ru + ci = 95.984 + 0.000 Inside Knuckle Radius (Corroded) = ru + ci = 6.496 + 0.000 Factor = 0.25 [ 3 + (R/r) ^0.5 ] = 0.25 [ 3 + (95.984 / 6.50 )^0.5 ] Required Thickness (Uncorroded) = P.R.M / (2.S.E - 0.2 P) + ci + ce 110.661 x 95.984 x 1.711 ( 2 x 18,800.00 x 1 - 0.2 x 110.66 )

R

[

in

]

95.984

r

[

in

]

6.496

M

[

-

]

1.711

tS

[

in

]

0.547

t'u

[

in

]

0.126

triu1

[

in

]

0.547

tri

[

in

]

0.484

? ? dou cin cen

[ [ [ [ [

in in in

] ] ] ] ]

1 1 22 0.000 0.000

where E = 1 + 0.00 + 0.063

Minimum Thickness of Head (Uncorroded) = t' + ci + ce = 0.063 + 0.000 + 0.063 Minimum Required Thickness = The Larger of t'u or tS = The Larger of 0.126 or 0.547 - Under Internal Pressure (Corroded)

Product Form of Nozzle Neck : 1. Plate/Forging ; 2. Pipe Nozzle-to-Vessel Weld Type: 1. Set-In; 2. Set-On Outside Diameter of Nozzle (Uncorroded) Internal Corrosion Allowance on Nozzle External Corrosion Allowance on Nozzle

bhat

NOZZLE NECK THICKNESS AND REINFORCEMENT CALCULATIONS : MDC No. : 896 Client : RIL Page : Job No. : 130339 Consultant : Chemtex Rev : Made By : JSB Eqpt. No. : 1222-H01 Date En Joint Efficiency of Nozzle [ ] 1.000 Material of Nozzle Neck [ ] SA-240 Gr.316 Allowable Stress of Nozzle Neck Sn [ psi ] 16600 Nozzle Wall Schedule [ ] Nominal Thickness of Nozzle Neck (Uncorroded) tnu [ in ] 0.787 Inside Diameter of Nozzle (Corroded) = dou-2tnu+2cin d = 22.000 - 2 x 0.787 + 2 x 0.000………………………….……………….. [ in ] 20.425 Inside Radius of Shell (Corroded) = Ru + ci R [ in ] 95.984 Inside Radius of Nozzle (Corroded) = (dou-2 tnu+2cin)/2 Rn [ in ] 10.213 Mean Radius at Midsurface = R + tri/2 Rm [ in ] 96.226 -1 -1 a [ ] 12.185 Angle a = {cos [(L' - Rn)/Rm]} - {cos [(L' + Rn)/Rm]} ° Finished Diameter or chord length of Opening at Midsurface (Corroded) = 2Rm [1-cos²(a/2)]^0.5….……...…………..……………………… in = 2 x 96.226 [ 1 - cos-1( 12.18 / 2) ]^0.5………..…………….……….. di [ ] 20.425 Inside Radius of Nozzle (Corroded) = di/2 = 20.425 / 2 ri [ in ] 10.213 Min. Thickness of Nozzle Neck for Internal Pressure ={ Pi.ri/[Sn.En-0.6 Pi] }+ci+ce = { 110.661x10.213/[16600.000x1.000- 0.6 x 110.661 ] } +0.000 + 0.000 trnu [ in ] 0.068 Required Nozzle Neck Thickness (corroded) = trnu - cin = 0.068 - 0.000 trn [ in ] 0.068 Design of Nozzle under external pressure Nozzle projection Nozzle outside diameter (corroded) = dou - cen = 22.00 - 0.00

[

in

]

25.394

do [ L/do do/(tnu-cen) A B [

in

]

psi

]

22.000 1.154 27.940 0.000926 7912.210

trenu

[

in

]

0.188

tren

[

in

]

0.188

Minimum required thickness is Maximum of trnu & trenu

t1

[

in

]

0.188

Thickness per UG-45(b)(1) (Uncorroded) = Larger of triu1 & t1u = Larger of 0.547 & 0.126

t2

[

in

]

0.547

t3

[

in

]

0.458

t4

[

in

]

0.547

t5

[

in

]

0.458

Value of A from Table G Value of B from Table HA-1 Minimum thickness required under external pressure = 3 Pe do/ (4 B) = 3 x 90.32 x 22.00 / (4 x 7,912.21) Required Nozzle Neck Thickness (corroded) = trenu - cen = 0.188 - 0.000

Thickness per UG-45(b)(2) (Uncorroded) = [ Pe.R.M / (2.S.E - 0.2 Pe) ] + ci + ce = 110.661 x 95.984 x 1.711 + 0.00 + 0.06 ( 2 x 90.32 x 1 - 0.2 x 90.32 ) Thickness per UG-45(b)(3) (Uncorroded) = Maximum of t2 & t3 = Maximum of 0.547 & 0.458 Applicable Thickness among t2, t3 & t4 (Uncorroded) = Minimum t2, t3 & t4 = Minimum of 0.547, 0.458 & 0.458

L

bhat

NOZZLE NECK THICKNESS AND REINFORCEMENT CALCULATIONS : MDC No. : 896 Client : RIL Page : Job No. : 130339 Consultant : Chemtex Rev : Made By : JSB Eqpt. No. : 1222-H01 Date Standard Wall Thk. of Nozzle (Uncorroded) Sw [ in ] 0.375 Thickness per UG-45(b)(4) (Uncorroded) = Sw + cin + cen = 0.375 + 0.000 + 0.000 t6 [ in ] 0.375 The Smaller of t5 or t6 t7 [ in ] 0.375 The Larger of t1 or t7 t8 [ in ] 0.375 Min. Required Thickness of Nozzle Neck (Uncorroded) Nominal Thickness of Nozzle Neck (Uncorroded)

tnm tnu

[ [

in in

] ]

0.375 0.787

do

[

in

]

2.362

tmin tc w1m w1 h F tri trn tn

[ [ [ [ [ [ [ [ [

in in in in in in in in

] ] ] ] ] ] ] ] ]

0.750 0.250 0.354 0.472 0.000 1 0.787 0.458 0.787

Limit of Reinforcement Along the Vessel Wall : [Per UG-40] = The Larger of 2di or 2(di/2+tv+tn) = Larger of 2 x 20.425 or 2 x (20.425/2+1.197+0.787)……………………….....L1

[

in

]

40.850

Limit of Reinforcement Normal to the Vessel Wall : [Per UG-40] = The Smaller of (2.5*tv) or (2.5*tn+te) = The Smaller of (2.5 x 1.197) or (2.5 x 0.787 + 1.000)………………….….

[

in

]

2.9685

Since provided thickness tnu > tnm, the Nozzle Neck Thickness is Adequate. Maximum Diameter of the Opening that does not } require additional reinforcement per UG-(36)(c)(3)(a) }............ Since di > do, further Reinforcement Check is Required. Size of Nozzle Neck-to-Vessel Weld : [Per UW-16] The Smaller of 0.75" or (the Thinner of tvu or tnu) Weld Throat = The Smaller of 0.25" or 0.7 tmin Weld Leg Size = tc / 0.707 = 0.250 / 0.707 Actual Weld Leg Size Inward projection of nozzle neck Factor The Required Thickness of a Seamless Shell Required Thickness of Nozzle (Corroded) = t5-cin-cen Nominal Thickness of Nozzle (Corroded) = tnu-cin-cen

L3

Strength Reduction Factors, not Greater than 1.0: fr1 fr1 = Sn/Sv; 1.0 for set-on nozzles [ ] 0.883 fr2 fr2 = (Lesser of Sn or Sp)/Sv [ ] 1.000 fr3 fr3 = Sp/Sv [ ] 1.000 Required Area of Reinforcement : [Per UG-37] Required Area for Internal Pressure = di.tri.F +2.tn.tri.F (1-fr1) = (20.425 x 0.787 x 1.000 + 2 x 0.787 x 0.787 x 1.000 (1 - 1.00 )…………………….……..………………… Ari [ in² ] 16.228 Required Area for External Pressure = 0.5Ari = 0.5 x 16.228 The larger of Ari or Are

Are Ar

[ [

in² in²

] ]

8.114 16.228

Area Available Without Reinforcing Pad: Area Available in Shell: = The Larger of (di-2tn) (tv-F.tri) OR 2tv(tv-F.tri)

A1

[

in²

]

7.721

Area Available in Outward Nozzle: = The Smaller of 2(tn-trn) (2.5tv.fr1) OR 2(tn-trn) (2.5tn+te)fr1

A2

[

in²

]

1.726

Area Available in Inward Nozzle = 2.h.tn.fr1

A3

[

in²

]

0.000

bhat

NOZZLE NECK THICKNESS AND REINFORCEMENT CALCULATIONS : MDC No. : 896 Client : RIL Page : Job No. : 130339 Consultant : Chemtex Rev : Made By : JSB Eqpt. No. : 1222-H01 Date Area Available in Outward Nozzle-to-Vessel Weld = w1².fr2 A41 [ in² ] 0.223 2 A43 [ in² ] 0.000 Area Available in Inward Nozzle-to-Vessel Weld = w3 .fr2 Total Available Area of Reinforcement = A1+A2+A3+A41+A43

Aa

[

in²

]

9.671

Is the Opening Adequately Reinforced WITHOUT the Pad?

?

[

-

]

No

Dp te Sp

[ [ [

in in psi

] ] ]

31.889 1.000 18800

Minimum Outward Nozzle-to-Pad Fillet Weld Size Actual Outward Nozzle-to-Pad Fillet Weld Size

w2m w2

[ [

in in

] ]

0.354 0.472

Minimum Inward Nozzle-to-Pad Fillet Weld Size Actual Inward Nozzle-to-Pad Fillet Weld Size

w3m w3

[ [

in in

] ]

0.000 0.000

Minimum Pad-to-Vessel Fillet Weld Size Actual Pad-to-Vessel Fillet Weld Size

w4m w4

[ [

in in

] ]

0.354 0.354

Area Available With Reinforcing Pad: Outside Diameter of Reinforcing Pad Thickness of Reinforcement Pad Allowable Stress of Reinforcement Pad

Area Available With Reinforcing Pad: Area Available in Shell = A1 Area Available in Outward Nozzle = The Larger of 2(tn-trn) (2.5t.fr1) OR 2(tn-trn) (2.5tn+te)fr1 Area Available in Inward Nozzle = A3 Area Available in Nozzle-to-Pad Weld = A41 Area Available in Pad-to-Vessel Weld Area Available in Inward Nozzle-to-Vessel Weld = w3².fr1 Area Available in Reinforcing Pad = (Dp-di-2tn)te.fr3

A1'

[

in²

]

7.721

A2' A3' A41' A42' A43' A5

[ [ [ [ [ [

in² in² in² in² in² in²

] ] ] ] ] ]

2.586 0.000 0.223 0.125 0.883 9.889

Total Available Area of Reinforcement = A1'+A2'+A3'+A41'+A42'+A43+A5

Aa'

[

in²

]

21.428

?

[

-

]

Yes

Is the Opening Adequately Reinforced WITH the Pad?

bhat

NOZZLE NECK THICKNESS AND REINFORCEMENT CALCULATIONS MDC No. : 896 Client : RIL Page : Job No. : 130339 Consultant : Chemtex Rev : Made By : JSB Eqpt. No. : 1222-H01 Date :

L' Pi Pe Td ci ce Sv

2.00 [ - ] [ - ] [ - ] [ in ] [ psi(g) ] [ psi(g) ] [ °C ] [ in ] [ in ] [ ] [ psi ]

Ru ru tu tc tvu tv t'

[ [ [ [ [ [ [

in in in in in in in

] ] ] ] ] ] ]

95.98 6.496 1.063 1.000 1.260 1.197 0.126

Head Thickness under Internal Pressure [Per 1-4 (d)] Inside Crown Radius (Corroded) = Ru + ci = 95.984 + 0.000 Inside Knuckle Radius (Corroded) = ru + ci = 6.496 + 0.000

R

[

in

]

95.984

r

[

in

]

6.496

Factor

M

[

-

]

1.000

tS

[

in

]

0.346

t'u

[

in

]

0.189

triu1

[

in

]

0.346

- Under Internal Pressure (Corroded)

tri

[

in

]

0.283

Minimum required thickness - Under Internal Pressure (Corroded)

treu tre

[ [

in in

] ]

0.973 0.910

Product Form of Nozzle Neck : 1. Plate/Forging ; 2. Pipe Nozzle-to-Vessel Weld Type: 1. Set-In; 2. Set-On Outside Diameter of Nozzle (Uncorroded) Internal Corrosion Allowance on Nozzle External Corrosion Allowance on Nozzle

? ? dou cin cen

[ [ [ [ [

in in in

] ] ] ] ]

1 1 22 0.000 0.000

Nozzle Mark Nominal Size of Nozzle Nozzle Location Distance between the centre lines of Vessel & Nozzle Internal Design Pressure External Design Pressure Design Temperature Internal Corrosion Allowance on Vessel External Corrosion Allowance on Vessel Material of Vessel Part Allowable Stress of Vessel Part at Td Inside Radius of Shell or Inside Crown } Radius of Head (Uncorroded) }................................ Inside Knuckle Radius (Uncorroded) Minimum Thickness of Vessel Part (Uncorroded) Minimum Thickness of Vessel Part (Corroded) Nominal Thickness of Vessel Part (Uncorroded) Nominal Thickness of Vessel Part (Corroded) Minimum Thickness as per UG-16 (b) (including corrosion)

(as per UG-37 (a) (1))

Required Thickness (Uncorroded) where E = 1 = P.R.M / (2.S.E - 0.2 P) + ci + ce 110.661 x 95.984 x 1.000 + 0.00 + 0.063 ( 2 x 18,800.00 x 1 - 0.2 x 110.66 ) Minimum Thickness of Head (Uncorroded) = t' + ci + ce = 0.126 + 0.000 + 0.063

A1 22" Tori-Dish end 0 110.661 90.321 650 0.000 0.063 SA 516 Gr.70 18800

Minimum Required Thickness = The Larger of t'u or tS = The Larger of 0.189 or 0.346

NOZZLE NECK THICKNESS AND REINFORCEMENT CALCULATIONS MDC No. : 896 Client : RIL Page : Job No. : 130339 Consultant : Chemtex Rev : Made By : JSB Eqpt. No. : 1222-H01 Date : Joint Efficiency of Nozzle Material of Nozzle Neck Allowable Stress of Nozzle Neck Nozzle Wall Schedule Nominal Thickness of Nozzle Neck (Uncorroded) Inside Diameter of Nozzle (Corroded) = dou-2tnu+2cin = 22.000 - 2 x 0.787 + 2 x 0.000………………………….……………….. Inside Radius of Shell (Corroded) = Ru + ci Inside Radius of Nozzle (Corroded) = (dou-2 tnu+2cin)/2 Mean Radius at Midsurface = R + tri/2

tnu

[ [ [ [ [

psi in

] ] ] ] ]

1.000 SA-240 Gr.316 16600 0.787

d R Rn Rm a

[ [ [ [ [

in in in in °

] ] ] ] ]

20.425 95.984 10.213 96.126 12.197

di ri

[ [

in in

] ]

20.425 10.213

trnu

[

in

]

0.068

trn

[

in

]

0.068

L

[

in

]

25.394

do L/do do/(tnu-cen) A B

[

in

]

[

psi ]

22.000 1.154 27.940 0.000926 7912.210

trenu

[

in

]

0.188

tren

[

in

]

0.188

Minimum required thickness is Maximum of trnu & trenu

t1

[

in

]

0.188

M = ( 3 + (L/r)^0.5 )x 0.25

M

Angle a = {cos-1[(L' - Rn)/Rm]} - {cos-1[(L' + Rn)/Rm]} Finished Diameter or chord length of Opening at Midsurface (Corroded) = 2Rm [1-cos²(a/2)]^0.5….……...…………..……………………… = 2 x 96.126 [ 1 - cos-1( 12.20 / 2) ]^0.5………..…………….……….. Inside Radius of Nozzle (Corroded) = di/2 = 20.425 / 2 Min. Thickness of Nozzle Neck for Internal Pressure ={ Pi.ri/[Sn.En-0.6 Pi] }+ci+ce = { 110.661x10.213/[16600.000x1.000- 0.6 x 110.661 ] } +0.000 + 0.000 Required Nozzle Neck Thickness (corroded) = trnu - cin = 0.068 - 0.000 Design of Nozzle under external pressure Nozzle projection Nozzle outside diameter (corroded) = dou - cen = 22.00 - 0.00

Value of A from Table G Value of B from Table HA-1 Minimum thickness required under external pressure = 3 Pe do/ (4 B) + cin + cen = [3 x 90.32 x 22.00 / (4 x 7,912.21 )] + 0.00 + 0.00 Required Nozzle Neck Thickness (corroded) = trenu - cin - cen = 0.188 - 0.000 - 0.000

Thickness per UG-45(b)(1) (Uncorroded) = [ P.R.M / (2.Sv.E - 0.2 P) ] + ci + ce = 110.661 x 95.984 x 1.711+ 0.000 + 0.063 ( 2 x 18,800.00 x 1 - 0.2 x 110.66 ) = Larger of 0.547 & t' Thickness per UG-45(b)(2) (Uncorroded) = [ Pe.R.M / (2.Sv.E - 0.2 Pe) ] + ci + ce = 90.321 x 95.984 x 1.711 + 0.000 + 0.063 ( 2 x 18,800.00 x 1 - 0.2 x 90.32 ) = Larger of 0.458 & 0.126 Thickness per UG-45(b)(3) (Uncorroded)

En Sn

t2

t3

1.711

[

in

]

0.547

[

in

]

0.547

[

in

]

0.458

[

in

]

0.458

NOZZLE NECK THICKNESS AND REINFORCEMENT CALCULATIONS MDC No. : 896 Client : RIL Page : Job No. : 130339 Consultant : Chemtex Rev : Made By : JSB Eqpt. No. : 1222-H01 Date : = Maximum of t2 & t3 = Maximum of 0.547 & 0.458 Standard Wall Thk. of Nozzle (Uncorroded) Thickness per UG-45(b)(4) (Uncorroded) = Sw + cin + cen = 0.375 + 0.000 + 0.000 The Smaller of t4 or t5 The Larger of t1 or t6

t4 Sw

[ [

in in

] ]

0.547 0.375

t5 t6 t7

[ [ [

in in in

] ] ]

0.375 0.375 0.375

tnm tnu

[ [

in in

] ]

0.375 0.787

do

[

in

]

2.362

tmin tc w1m w1 h F tri trn tn

[ [ [ [ [ [ [ [ [

in in in in in in in in

] ] ] ] ] ] ] ] ]

0.750 0.250 0.354 0.472 0.000 1 0.346 0.375 0.787

Limit of Reinforcement Along the Vessel Wall : [Per UG-40] = The Larger of 2di or 2(di/2+tv+tn) = Larger of 2 x 20.425 or 2 x (20.425/2+1.197+0.787)……………………….....

L1

[

in

]

40.850

Limit of Reinforcement Normal to the Vessel Wall : [Per UG-40] = The Smaller of (2.5*tv) or (2.5*tn+te) = The Smaller of (2.5 x 1.197) or (2.5 x 0.346 + 1.000)………………….….

L3

[

in

]

2.9685

Min. Required Thickness of Nozzle Neck (Uncorroded) Nominal Thickness of Nozzle Neck (Uncorroded) Since provided thickness tnu > tnm, the Nozzle Neck Thickness is Adequate. Maximum Diameter of the Opening that does not } require additional reinforcement per UG-(36)(c)(3)(a) }............ Since di > do, further Reinforcement Check is Required. Size of Nozzle Neck-to-Vessel Weld : [Per UW-16] The Smaller of 0.75" or (the Thinner of tvu or tnu) Weld Throat = The Smaller of 0.25" or 0.7 tmin Weld Leg Size = tc / 0.707 = 0.250 / 0.707 Actual Weld Leg Size Inward projection of nozzle neck Factor The Required Thickness of a Seamless Shell (corroded) Required Thickness of Nozzle (Corroded) = tnm-cin-cen Nominal Thickness of Nozzle (Corroded) = tnu-cin-cen

Strength Reduction Factors, not Greater than 1.0: fr1 = Sn/Sv; 1.0 for set-on nozzles fr1 [ - ] fr2 = (Lesser of Sn or Sp)/Sv fr2 [ - ] fr3 = Sp/Sv fr3 [ - ] Required Area of Reinforcement : [Per UG-37] Required Area for Internal Pressure = di.tri.F +2.tn.tri.F (1-fr1) = (20.425 x 0.346 x 1.000 + 2 x 0.787 x 0.346 x 1.000 (1 - 1.00 )…………………….……..………………… Ari [ in² ] Required Area for External Pressure = 0.5(di.tre.F +2.tn.tre.F (1-fr1)) Are [ in² ] The larger of Ari or Are Ar [ in² ] Area Available Without Reinforcing Pad: Area Available in Shell: = The Larger of (di-2tn) (tv-F.tri) OR 2tv(tv-F.tri) Area Available in Outward Nozzle: = The Smaller of 2(tn-trn) (2.5tv.fr1) OR 2(tn-trn) (2.5tn+te)fr1

0.883 1.000 1.000

7.124 10.010 10.010

A1

[

in² ]

19.395

A2

[

in² ]

2.162

NOZZLE NECK THICKNESS AND REINFORCEMENT CALCULATIONS MDC No. : 896 Client : RIL Page : Job No. : 130339 Consultant : Chemtex Rev : Made By : JSB Eqpt. No. : 1222-H01 Date : Area Available in Inward Nozzle = 2.h.tn.fr1 Area Available in Outward Nozzle-to-Vessel Weld = w1².fr2 Area Available in Inward Nozzle-to-Vessel Weld = w32.fr2

A3 A41 A43

[ [ [

in² ] in² ] in² ]

0.000 0.223 0.000

Total Available Area of Reinforcement = A1+A2+A3+A41+A43

Aa

[

in² ]

21.780

Is the Opening Adequately Reinforced WITHOUT the Pad?

?

[

Dp te Sp

[ [ [

in ] in ] psi ]

31.889 1.000 18800

Minimum Outward Nozzle-to-Pad Fillet Weld Size Actual Outward Nozzle-to-Pad Fillet Weld Size

w2m w2

[ [

in in

] ]

0.354 0.472

Minimum Inward Nozzle-to-Pad Fillet Weld Size Actual Inward Nozzle-to-Pad Fillet Weld Size

w3m w3

[ [

in in

] ]

0.000 0.000

Minimum Pad-to-Vessel Fillet Weld Size Actual Pad-to-Vessel Fillet Weld Size

w4m w4

[ [

in in

] ]

-

Area Available With Reinforcing Pad: Outside Diameter of Reinforcing Pad Thickness of Reinforcement Pad Allowable Stress of Reinforcement Pad

-

]

Yes

Area Available With Reinforcing Pad: Area Available in Shell = A1 Area Available in Outward Nozzle = The Larger of 2(tn-trn) (2.5t.fr1) OR 2(tn-trn) (2.5tn+te)fr1 Area Available in Inward Nozzle = A3 Area Available in Nozzle-to-Pad Weld = A41 Area Available in Pad-to-Vessel Weld Area Available in Inward Nozzle-to-Vessel Weld = w3².fr1 Area Available in Reinforcing Pad = (Dp-di-2tn)te.fr3

A1'

[

in² ]

-

A2' A3' A41' A42' A43' A5

[ [ [ [ [ [

in² in² in² in² in² in²

] ] ] ] ] ]

-

Total Available Area of Reinforcement = A1'+A2'+A3'+A41'+A42'+A43+A5 Is the Opening Adequately Reinforced WITH the Pad?

Aa' ?

[ [

in² ] - ]

-

NOZZLE NECK THICKNESS AND REINFORCEMENT CALCULATIONS : MDC No. : 896 Client : RIL Page : Job No. : 130339 Consultant : Chemtex Rev : Made By : JSB Eqpt. No. : 1222-H01 Date 2.00 Nozzle Mark [ ] A2 Nominal Size of Nozzle [ ] 26" Nozzle Location [ ] Tori-Dish end Distance between the centre lines of Vessel & Nozzle L' [ in ] 0 Internal Design Pressure Pi [ psi(g) ] 90.321 External Design Pressure Pe [ psi(g) ] 14.325 Design Temperature Td [ °C ] 650 Internal Corrosion Allowance on Vessel ci [ in ] 0.063 External Corrosion Allowance on Vessel ce [ in ] 0.000 Material of Vessel Part [ ] SA 516 Gr.70 Allowable Stress of Vessel Part at Td Sv [ psi ] 18800 Inside Radius of Shell or Inside Crown } Radius of Head (Uncorroded) }................................ Ru [ in ] 95.98 Inside Knuckle Radius (Uncorroded) ru [ in ] 6.772 Minimum Thickness of Vessel Part (Uncorroded) tu [ in ] 0.472 Minimum Thickness of Vessel Part (Corroded) tc [ in ] 0.409 Nominal Thickness of Vessel Part (Uncorroded) tvu [ in ] 0.630 Nominal Thickness of Vessel Part (Corroded) tv [ in ] 0.567 Minimum Thickness as per UG-16 (b) (including corrosion) t' [ in ] 0.126 Head Thickness under Internal Pressure [Per 1-4 (d)] Inside Crown Radius (Corroded) = Ru + ci = 95.984 + 0.063 Inside Knuckle Radius (Corroded) = ru + ci = 6.772 + 0.063

R

[

in

]

96.047

r

[

in

]

6.835

Factor

(as per UG-37 (a) (1))

M

[

-

]

1.000

Required Thickness (Uncorroded) = P.R.M / (2.S.E - 0.2 P) + ci + ce 90.321 x 96.047 x 1.000 ( 2 x 18,800.00 x 1 - 0.2 x 90.32 )

where E = 1

tS

[

in

]

0.294

t'u

[

in

]

0.189

triu1

[

in

]

0.294

- Under Internal Pressure (Corroded)

tri

[

in

]

0.231

Minimum required thickness - Under Internal Pressure (Corroded)

treu tre

[ [

in in

] ]

0.216 0.153

Product Form of Nozzle Neck : 1. Plate/Forging ; 2. Pipe Nozzle-to-Vessel Weld Type: 1. Set-In; 2. Set-On Outside Diameter of Nozzle (Uncorroded) Internal Corrosion Allowance on Nozzle External Corrosion Allowance on Nozzle

? ? dou cin cen

[ [ [ [ [

in in in

] ] ] ] ]

1 1 26 0.063 0.000

+ 0.06 + 0.000

Minimum Thickness of Head (Uncorroded) = t' + ci + ce = 0.126 + 0.063 + 0.000 Minimum Required Thickness = The Larger of t'u or tS = The Larger of 0.189 or 0.294

bhat

NOZZLE NECK THICKNESS AND REINFORCEMENT CALCULATIONS : MDC No. : 896 Client : RIL Page : Job No. : 130339 Consultant : Chemtex Rev : Made By : JSB Eqpt. No. : 1222-H01 Date En Joint Efficiency of Nozzle [ ] 1.000 Material of Nozzle Neck [ ] SA 516 Gr.70 Allowable Stress of Nozzle Neck Sn [ psi ] 18800 Nozzle Wall Schedule [ ] Nominal Thickness of Nozzle Neck (Uncorroded) tnu [ in ] 0.472 Inside Diameter of Nozzle (Corroded) = dou-2tnu+2cin d = 26.000 - 2 x 0.472 + 2 x 0.063………………………….……………….. [ in ] 25.182 Inside Radius of Shell (Corroded) = Ru + ci R [ in ] 96.047 Inside Radius of Nozzle (Corroded) = (dou-2 tnu+2cin)/2 Rn [ in ] 12.591 Mean Radius at Midsurface = R + tri/2 Rm [ in ] 96.163 -1 -1 a [ ] 15.047 Angle a = {cos [(L' - Rn)/Rm]} - {cos [(L' + Rn)/Rm]} ° Finished Diameter or chord length of Opening at Midsurface (Corroded) = 2Rm [1-cos²(a/2)]^0.5….……...…………..……………………… in = 2 x 96.163 [ 1 - cos-1( 15.05 / 2) ]^0.5………..…………….……….. di [ ] 25.182 Inside Radius of Nozzle (Corroded) = di/2 = 25.182 / 2 ri [ in ] 12.591 Min. Thickness of Nozzle Neck for Internal Pressure ={ Pi.ri/[Sn.En-0.6 Pi] }+ci+ce = { 90.321x12.591/[18800.000x1.000- 0.6 x 90.321 ] } +0.063 + 0.000 trnu [ in ] 0.124 Required Nozzle Neck Thickness (corroded) = trnu - cin = 0.124 - 0.063 trn [ in ] 0.061 Design of Nozzle under external pressure Nozzle projection Nozzle outside diameter (corroded) = dou - cen = 26.00 - 0.00

[

in

]

21.378

do [ L/do do/(tnu-cen) A B [

in

]

psi

]

26.000 0.822 55.085 0.0002852 3582.579

trenu

[

in

]

0.141

tren

[

in

]

0.078

Minimum required thickness is Maximum of trnu & trenu

t1

[

in

]

0.141

M = ( 3 + (L/r)^0.5 )x 0.25

M

Value of A from Table G Value of B from Table HA-1 Minimum thickness required under external pressure = 3 Pe do/ (4 B) + cin + cen = [3 x 14.33 x 26.00 / (4 x 3,582.58 )] + 0.06 + 0.00 Required Nozzle Neck Thickness (corroded) = trenu - cin - cen = 0.141 - 0.063 - 0.000

Thickness per UG-45(b)(1) (Uncorroded) = [ P.R.M / (2.Sv.E - 0.2 P) ] + ci + ce = 90.321 x 96.047 x 1.687 + 0.063 + 0.000 ( 2 x 18,800.00 x 1 - 0.2 x 90.32 ) = Larger of 0.453 & t' Thickness per UG-45(b)(2) (Uncorroded) = [ Pe.R.M / (2.Sv.E - 0.2 Pe) ] + ci + ce = 14.325 x 96.047 x 1.687 + 0.063 + 0.000 ( 2 x 18,800.00 x 1 - 0.2 x 14.33 ) = Larger of 0.125 & 0.126 Thickness per UG-45(b)(3) (Uncorroded)

L

t2

t3

1.687

[

in

]

0.453

[

in

]

0.453

[

in

]

0.125

[

in

]

0.126

bhat

NOZZLE NECK THICKNESS AND REINFORCEMENT CALCULATIONS : MDC No. : 896 Client : RIL Page : Job No. : 130339 Consultant : Chemtex Rev : Made By : JSB Eqpt. No. : 1222-H01 Date = Maximum of t2 & t3 = Maximum of 0.453 & 0.125 t4 [ in ] 0.453 Standard Wall Thk. of Nozzle (Uncorroded) Sw [ in ] 0.375 Thickness per UG-45(b)(4) (Uncorroded) = Sw + cin + cen = 0.375 + 0.063 + 0.000 t5 [ in ] 0.438 The Smaller of t4 or t5 t6 [ in ] 0.438 The Larger of t1 or t6 t7 [ in ] 0.438 Min. Required Thickness of Nozzle Neck (Uncorroded) Nominal Thickness of Nozzle Neck (Uncorroded)

tnm tnu

[ [

in in

] ]

0.438 0.472

do

[

in

]

2.362

tmin tc w1m w1 h F tri trn tn

[ [ [ [ [ [ [ [ [

in in in in in in in in

] ] ] ] ] ] ] ] ]

0.472 0.250 0.354 0.354 0.000 1 0.231 0.375 0.409

Limit of Reinforcement Along the Vessel Wall : [Per UG-40] = The Larger of 2di or 2(di/2+tv+tn) = Larger of 2 x 25.182 or 2 x (25.182/2+0.567+0.409)………………………..... L1

[

in

]

50.364

Limit of Reinforcement Normal to the Vessel Wall : [Per UG-40] = The Smaller of (2.5*tv) or (2.5*tn+te) = The Smaller of (2.5 x 0.567) or (2.5 x 0.231 + 0.472)………………….….

[

in

]

1.4175

Since provided thickness tnu > tnm, the Nozzle Neck Thickness is Adequate. Maximum Diameter of the Opening that does not } require additional reinforcement per UG-(36)(c)(3)(a) }............ Since di > do, further Reinforcement Check is Required. Size of Nozzle Neck-to-Vessel Weld : [Per UW-16] The Smaller of 0.75" or (the Thinner of tvu or tnu) Weld Throat = The Smaller of 0.25" or 0.7 tmin Weld Leg Size = tc / 0.707 = 0.250 / 0.707 Actual Weld Leg Size Inward projection of nozzle neck Factor The Required Thickness of a Seamless Shell (corroded) Required Thickness of Nozzle (Corroded) = tnm-cin-cen Nominal Thickness of Nozzle (Corroded) = tnu-cin-cen

L3

Strength Reduction Factors, not Greater than 1.0: fr1 fr1 = Sn/Sv; 1.0 for set-on nozzles [ ] 1.000 fr2 fr2 = (Lesser of Sn or Sp)/Sv [ ] 1.000 fr3 fr3 = Sp/Sv [ ] 1.000 Required Area of Reinforcement : [Per UG-37] Required Area for Internal Pressure = di.tri.F +2.tn.tri.F (1-fr1) = (25.182 x 0.231 x 1.000 + 2 x 0.409 x 0.231 x 1.000 (1 - 1.00 )…………………….……..………………… Ari [ in² ] 5.813 Are Required Area for External Pressure = 0.5(di.tre.F +2.tn.tre.F (1-fr1)) [ in² ] 1.989 The larger of Ari or Are Ar [ in² ] 5.813 Area Available Without Reinforcing Pad: Area Available in Shell: = The Larger of (di-2tn) (tv-F.tri) OR 2tv(tv-F.tri) Area Available in Outward Nozzle: = The Smaller of 2(tn-trn) (2.5tv.fr1) OR 2(tn-trn) (2.5tn+te)fr1

A1

[

in²

]

4.351

A2

[

in²

]

0.096

bhat

NOZZLE NECK THICKNESS AND REINFORCEMENT CALCULATIONS : MDC No. : 896 Client : RIL Page : Job No. : 130339 Consultant : Chemtex Rev : Made By : JSB Eqpt. No. : 1222-H01 Date Area Available in Inward Nozzle = 2.h.tn.fr1 A3 [ in² ] 0.000 Area Available in Outward Nozzle-to-Vessel Weld = w1².fr2 A41 [ in² ] 0.125 A43 [ in² ] 0.000 Area Available in Inward Nozzle-to-Vessel Weld = w32.fr2 Total Available Area of Reinforcement = A1+A2+A3+A41+A43

Aa

[

in²

]

4.572

Is the Opening Adequately Reinforced WITHOUT the Pad?

?

[

-

]

No

Dp te Sp

[ [ [

in in psi

] ] ]

31.889 0.472 18800

Minimum Outward Nozzle-to-Pad Fillet Weld Size Actual Outward Nozzle-to-Pad Fillet Weld Size

w2m w2

[ [

in in

] ]

0.354 0.354

Minimum Inward Nozzle-to-Pad Fillet Weld Size Actual Inward Nozzle-to-Pad Fillet Weld Size

w3m w3

[ [

in in

] ]

0.000 0.000

Minimum Pad-to-Vessel Fillet Weld Size Actual Pad-to-Vessel Fillet Weld Size

w4m w4

[ [

in in

] ]

0.354 0.354

Area Available With Reinforcing Pad: Outside Diameter of Reinforcing Pad Thickness of Reinforcement Pad Allowable Stress of Reinforcement Pad

Area Available With Reinforcing Pad: Area Available in Shell = A1 Area Available in Outward Nozzle = The Larger of 2(tn-trn) (2.5t.fr1) OR 2(tn-trn) (2.5tn+te)fr1 Area Available in Inward Nozzle = A3 Area Available in Nozzle-to-Pad Weld = A41 Area Available in Pad-to-Vessel Weld Area Available in Inward Nozzle-to-Vessel Weld = w3².fr1 Area Available in Reinforcing Pad = (Dp-di-2tn)te.fr3

A1'

[

in²

]

4.351

A2' A3' A41' A42' A43' A5

[ [ [ [ [ [

in² in² in² in² in² in²

] ] ] ] ] ]

0.217 0.000 0.125 0.125 0.223 2.948

Total Available Area of Reinforcement = A1'+A2'+A3'+A41'+A42'+A43+A5 Is the Opening Adequately Reinforced WITH the Pad?

Aa' ?

[ [

in² -

] ]

7.988 Yes

bhat