ASME VIII Corroded Nozzle - Shell With Repad - UG-45_UG-37 Calc

8/19/2019 ASME VIII Corroded Nozzle - Shell With Repad - UG-45_UG-37 Calc

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ASME VIII, Div 1, UG-37 Reinforcement required for opening in !e"" #nd forme

$"#nt ID $AR

Equipment &um'er( Equipment(Equipment )*pe( D#te( 21st August

&omenc"#ture

A total cross‐sectional area of reinforcement required in the plane under consideration

(includes consideration of no$$le area through shell if %n&%' 1"0#

area in e)cess thic*ness in the 'essel +all a'aila,le for reinforcement (see Figure U(includes consideration of no$$le area through shell if %n&%' 1"0#

area in e)cess thic*ness in the no$$le +all a'aila,le for reinforcement (see Figure U

area a'aila,le for reinforcement +hen the no$$le e)tends inside the 'essel +all (see

cross‐sectional area of material added as reinforcement (see Figure UG-!"1#

cross‐sectional area of 'arious +elds a'aila,le for reinforcement (see Fi

c corrosion allo+ance

inside shell diameteroutside diameter of reinforcing element (actual si$e of reinforcing element ma. e)ce

reinforcement esta,lished ,. UG-40/ ho+e'er credit cannot ,e ta*en for an. materi

d nished diameter of circular opening or nished dimension (chord length at midsurfa

e)cluding e)cess thic*ness a'aila,le for reinforcement# of nonradial opening in the

consideration in" see Figures UG-!"1 and UG-403

1 +hen an opening is in the solid plate or in a 5ategor. 6 ,utt 7oint/ or0"89 +hen an opening is located in an :; or autogenousl. +elded pipe or tu,e" <f t

+elded 7oint is clearl. identia,le and it can ,e sho+n that the opening does not pas

A1

A2

A

A9

A41

A42

A4

=

p

1 (see denitions for tr and t

rn#

1

1




$"#nt ID $AREquipment &um'er( 0 Equipment( 0

Equipment )*pe( 0 D#te( 21st August

&omenc"#ture

allo+a,le stress in reinforcing element (plate# psi

allo+a,le stress in 'essel psi (see % a,o'e#t =specied 'essel +all thic*ness (not including forming allo+ances#" For pipe it is the

manufacturing undertolerance allo+ed in the pipe specication"

thic*ness or height of reinforcing element (see Figure UG-40#

nominal thic*ness of internal pro7ection of no$$le +all

no$$le +all thic*ness" )cept for pipe this is the +all thic*ness not including forming

use the nominal thic*ness see UG-1@(d#3"

required thic*ness of a seamless shell ,ased on the circumferential stress or of a forthe rules of this i'ision for the designated pressure using = 1 e)cept thatD

(a# +hen the opening and its reinforcement are entirel. +ithin the spherical portion

tr is the thic*ness required ,. 1-4(d# using E = 1/

+here the no$$le a)is pierces the inside +all of the cone/

(c# +hen the opening and its reinforcement are in an ellipsoidal head and are locate

a circle the center of +hich coincides +ith the center of the head and the diameter oof the shell diameter tr is the thic*ness required for a seamless sphere of radius C1

diameter and C1 is gi'en ,. >a,le UG-!

%p

%'

te

ti

tn

tr




$"#nt ID $AR

Equipment &um'er( 0 Equipment( 0


.it!out Reinforcing E"ement

A = Area requiredArea a'aila,le ins s

Area a'aila,le in n

use smaller 'alue

Area a'aila,le in in

'alue

Area a'aila,le in o


Ipening is adequat

Ipening is not ade

reinforcing elementor thic*ness must ,

d tr F 2tn tr F(1 - f r1#A

1 = d(

1t - Ft

r# - 2t

n(

1t - Ft

r#(1 - f

r1#

2(t tn#(1t Ft

r# - 2t

n(

1t - Ft

r#(1 - F

r1#

A2 = 9(t

n - t

rn#f

r2t

9(tn - t

rn#f

r2t

n

A = 9t t

if r2

9ti ti f r22h t

if r2

A41

= out+ard no$$le +eld = (leg#2 f r2

A4

= in+ard no$$le +eld = (leg#2 f r2

<f A1 A

2 A

A

41 A

4 J A

<f A1 A

2 A

A

41 A

4 A




$"#nt ID $AR

Equipment &um'er( 0 Equipment( 0


A42

=

A49

=





!e#d Bage 1

%E $$

014

(see Figure UG-!"1#

-!"1#

-!"1#

Figure UG-!"1#

ure UG-!"1#

ed the limits of

l outside these limits#

ce of thic*ness

lane under

he :; or autogenousl.

s through this +eld 7oint



!e#d Bage 2

%E $$

014

ominal thic*ness less

allo+ances" For pipe

med head computed ,.

f a torispherical head

entirel. +ithin a circle

f +hich is equal to 80 +here is the shell



!e#d Bage

%E $$

014

hell use larger 'alue

$$le pro7ecting out+ard/

ard no$$le/ use smaller

t+ard +eld

ard +eld

el. reinforced

uatel. reinforced so

s must ,e added and& e increased



!e#d Bage 4

%E $$

014





ASME %$V/ VIII-1-012, UG-2 &o44"e &ec5 )!ic5ne #nd,

UG-37 Reinforcement Required for pening in S!e"" #nd +ormed 6e#d

$"#nt ID( A $roduction $"

Equipment &um'er( A65-124 Equipment( Ligh Bressur

Equipment )*pe( Messel D#te( 1st Nanuar. 2

Introduction

$icture S5etc!

>he follo+ing calculation for minimum internall. corroded no$$le nec* thic*ness is ,i' 1 sections UG-! and UG-49" As per UG-4 (,# the results of con'ersions of unitsto (a minimum of# three signicant gures"

&o44"e ID( H01 $<ID( 124








&omenc"#ture

A = total cross‐sectional area of reinforcement required in the plane under consideration(includes consideration of no$$le area through shell if %n&%' 1"0#

area in e)cess thic*ness in the 'essel +all a'aila,le for reinforcement (see Figure U

(includes consideration of no$$le area through shell if %n&%' 1"0#

area in e)cess thic*ness in the no$$le +all a'aila,le for reinforcement (see Figure U

area a'aila,le for reinforcement +hen the no$$le e)tends inside the 'essel +all (see

cross‐sectional area of material added as reinforcement (see Figure UG-!"1#

cross‐sectional area of 'arious +elds a'aila,le for reinforcement (see Fic = corrosion allo+ance

= inside shell diameter

outside diameter of reinforcing element (actual si$e of reinforcing element ma. e)ce

reinforcement esta,lished ,. UG-40/ ho+e'er credit cannot ,e ta*en for an. materi

d = nished diameter of circular opening or nished dimension (chord length at midsurf

e)cluding e)cess thic*ness a'aila,le for reinforcement# of nonradial opening in the

consideration in" see Figures UG-!"1 and UG-403 =

1 h i i i th lid l t i 5 t 6 , tt 7 i t

A1 =

A2 =

A =

A9 =

A41 A42 A4 =

p =

1 (see denitions for tr and t

rn#



inside radius of the shell course under consideration e)cluding corrosion allo+ance

inside radius of the no$$le under consideration

% = allo+a,le stress 'alue in tension (see UG-2# psi

allo+a,le stress in no$$le psi (see % a,o'e#ASME %$V/ VIII-1-012, UG-2 &o44"e &ec5 )!ic5ne #nd,





&omenc"#ture

allo+a,le stress in reinforcing element (plate# psi

allo+a,le stress in 'essel psi (see % a,o'e#

t = specied 'essel +all thic*ness (not including forming allo+ances#" For pipe it is the

manufacturing undertolerance allo+ed in the pipe specication"

actual 'essel +all thic*ness including corrosion allo+ance

the actual present thic*ness of the no$$le determined ,. U>thic*ness or height of reinforcing element (see Figure UG-40#

nominal thic*ness of internal pro7ection of no$$le +all

no$$le +all thic*ness" )cept for pipe this is the +all thic*ness not including formin

use the nominal thic*ness see UG-1@(d#3"

required thic*ness of a seamless shell ,ased on the circumferential stress or of a fo

the rules of this i'ision for the designated pressure using = 1 e)cept thatD

(a# +hen the opening and its reinforcement are entirel. +ithin the spherical portiontr is the thic*ness required ,. 1-4(d# using E = 1/

:M =

:n =

%n =

%p =

%' =

tact

tnact t

e =

ti =

tn =

tr =








.it!out Reinforcing E"ement

A = Area required

Area a'aila,le in sh

Area a'aila,le in n

use smaller 'alue


'alue

Area a'aila,le in oArea a'aila,le in in

d trF 2t

nt

rF(1 - f

r1#

A1 = d(

1t - Ft

r# - 2t

n(

1t - Ft

r#(1 - f

r1#

2(t tn#(1t Ftr# - 2tn(1t - Ftr#(1 - Fr1#A

2 = 9(t

n - t

rn#f

r2t

9(tn - t

rn#f

r2t

n

A = 9t t

if r2

9ti t

if r2

2h tif r2

A41 = out+ard no$$le +eld = (leg#2 f r2A

4 = in+ard no$$le +eld = (leg#2 f

r2

d or :n tn t

Use larger 'alue Use larger 'al

d or :n tn

For no$$le +all aFor no$$le +all inserted through the 'essel +all








+ormu"# D#t# &ote

c = 0"129 in

= !2 in

10"000 in

d = 4 in 4"00O 2 ) 0"129O (2 ) c#

= 1

1"0 opening is in solid plate it does not pa

F = 1"0 reinforcement is not integral

1

1

1

p =

1 =

f r =

f r1 =f r2 =

f l f % % %



0"000 in

&o44"e det#i" =A$I 27, )#'"e 1>(

Bipe si$e (HB%#D 4 in Hominal thic*ness less QcQD

%cheduleD H&A 5orrected for under toleranceD

Appro)imate <D 4"0P8 in (undertolerance = 12"9#

Hominal thic*nessD 0"P!9 in






/#"cu"#tion ASME VIII Refere

(a# 5alculate limits of reinforcement

Barallel to head use larger of D UG-40

d = 4"000 in UG-40(,#(1#

"82P in UG-40(,#(2#

Ue in

A4

leg =

:n tn t =



:equired no$$le thic*nessD

21in






(c# etermine required replacement areaD &ote

A =

A = "@@8

(d# 5alculate area contri,utionsD

Area a'aila,le in the head use larger 'alueD

trn

d trF 2t

nt

rF(1 - f

r1#

in2

tr =B:n

% - 0"@B



0"000

0"000

0"000






Area a'aila,le in +eldsD

0"290

A"1

= 9t tif r2

A"1

= in2

A"2 = 9ti ti f r2

A"2

= in2

A"

= 2h tif r2

A"

= in2

Ue A3 in0

A41

= (leg#2 f r

A41

= in2

A42

= (leg#2 f r4








(g# 5hec* no$$le nec* thic*ness as specied in UG-49"

For all no$$les other than access openings and openings used onl. for inspection de

t, = mint

, ma)(t

,1 t

,2#3



0"2 in

)6E MI&IMUM &889E &E/: )6I/:&ESS 330 in

tUG-49

=



Bage 1

#tform

%eparator 019

sed on A%E M<<<shall ,e e)pressed



Bage 2

#tform

%eparator

019

(see Figure UG-!"1#

-!"1#

-!"1#

Figure UG-!"1#

ure UG-!"1#

ed the limits of

al outside these limits#

ce of thic*ness

lane under



Bage

#tform

%eparator

019

ominal thic*ness less

allo+ances" For pipe

med head computed ,.

f a torispherical head



Bage 4

#tform

%eparator

019

ell use larger 'alue

$$le pro7ecting out+ard/

ard no$$le/ use smaller

t+ard +eld ard +eld

ue

t

,utting the 'essel +all



Bage 9

#tform %eparator

019

s through a +elded 7oint



0"890 in

0"!44 in

Bage @

#tform

%eparator

019

ce



Bage !

#tform

%eparator

019



Bage 8

#tform

%eparator

019



Bage P

#tform %eparator

019

termine t,D





p

:ntn

tr n

tr

dti

c

h

d or :n tn t

Use larger 'alue Use larger 'alu

d or :n tn t

h 2"9t 2"9ti

Use smallest 'alue

2"9t or 2"9tn te

Use smaller 'alue

%eefor lireinf

GH:A HI>Dincludes consideration of these areas if %n&%' 1"0 (,oth sides of 5#

For no$$le +all a,uttFor no$$le +all inserted through the 'essel +all

A

A1

A0

A3

A1

A3

A0A2



te

UG-40mits oforcement

ing the 'essel +all

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ASME VIII Corroded Nozzle - Shell With Repad - UG-45_UG-37 Calc

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