Nozzle Calculations
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Prepared by: Baher EL Shaikh
Page ( 6 / 41 )
ASME Code VIII Div. I Edition 2004, Addenda 2005
Nozzle (N1)
Pressure Vessel Calculation
(8")
Sheet (1/2)
Head Data SA-516 Gr 70 M 138000 1.00 mm 14 2.362 914.5 4.000
20,000 in 0.551 0.093 36.0 0.157
:- Shell material. :- (Sv), Max. allowable stress -(Kpa, (psi)) :- (E1), efficiency of shell at nozzle. :- (tv), wall thick, uncorroded :- (tr), required wall thickness :- (Rsi), inside radius of shell :- (c), corrosion allowance
Nozzle Data: SA-106 Gr. B M 1.00 1.00 12.5% 88.9 3.500 Kpa psig 118000.00 118000 00 358.73
17,100 1 100 51.0
:- Nozzle material. :- (E) Nozzle Efficiency. :- (F) Correction factor. :- (Utp), undertolerance of nozzle pipe. :- (Do), Outside diameter - (mm, (in)) (S ) M ll bl stress t :- (Sn), Max. allowable : (P), (P=Pi+Ps) Internal Pressure
Nozzle Required Wall Thickness (trn) UG-27 (C)& Appendex 1-1
trn = P*(Do/2)/(Sn*E+0.4*P) By adding corrosion all. (AC)= trn+2*c By adding pipe tolerance = AC+UTP*trn
=51*(3.5/2)/(17100*1+0.4*51)= =0.005+(2*0.157) = =0.163+0.125*0.005 =
Use Nozzle 8" Sch120 B36.10M (tn) Variables: Under tolerance(UT) = Nozzle corroded thickness (tc) = Nozzle Inside corroded Diameter (d) = Nozzle corroded inside raduis (Ron) = Nozzle uncorroded inside raduis (Rn) = Vessle corroded thk.(t) =
tn*UTp = 0.719 * 0.125 tn-c-UT = 0.719-0.157-0.09 Do-2*tc Do/2 d/2 tv-c
= 3.5 - 2*0.472 = 2.557/2 = 2.56/2 = 0.551 - 0.157
UT = tc =
0.005 0.163 0.163 0.719
in in in in
0.13 4.13 4.15 18.26
mm mm mm mm
0.090 0.472
in in
2.28 11.98 64.94 44.45 32.47 10.00 10.26
mm mm
d = 2.557 Ron = 1.75 Rn = 1.28 t= 0.394 Nominal thk. of internal projection of nozzle wall (ti) =tn-2c =0.719-(2*0.157) = ti= 0.404 Extension of nozzle beyond the inside surface of the vessel wall (h) = min. of {(2.5*tv),(2.5*ti) h = Min.{(2.5*0.551),(2.5*0.404)= h= 1.010 fr1 = MIN(Sn/Sv,1) = MIN(17100/20000, 1) fr1 = 0.855 fr2 = MIN(Sn/Sv,1) = MIN(17100/20000, 1) fr2 = 0.855 MIN(Sn/Sv,Sp/Sv,1) fr3 = = MIN(17100/20000, 0/20000,1) fr3 = 0.000 fr4 = MIN(Sp/Sv,1) = MIN(0/20000,1) fr4 = 0.000
in in in in in in
mm mm mm mm mm
ASME Code VIII Div. I Edition 2004, Addenda 2005
Page ( 7 / 41 )
Pressure Vessel Calculation
Sheet (2/2)
Nozzle (N1) (8")
Nozzle Neck Thickness (UG-45): Wall thickness per UG-45(a) tr1=trn+c Wall thickness per UG-45(b) tr2=tr+c Wall thickness per UG-16(b) tr3=0.0625+c Wall thickness per UG-45(b)(4) tr4=(t std -Utp)+c The greater of tr2 or tr3 tr5 = The lesser of tr4 or tr5 tr6 = Required per UG-45 largest of tr1 or tr6 tr7= tr7≤ tn-Utp*tn
=0.005+0.157 = =0.093+0.157 = =0.0625+0.157 = =0.189+0.157 = =Max(0.25,0.22) = =Min(0.346,0.25) = =Max(0.163,0.25) = =0.25≤0.719-0.09
0.163 0.250 0.220 0.346 0.250 0.250 0.250
in in in in in in in
4.13 6.36 5.59 8.80 6.36 6.36 6.36
mm mm mm mm mm mm mm
0.750 in
19.05
mm
0.551 in
14.00
mm
Ok
Calulating Size of Fillet Weld (Leg41,Leg42) used UW-16&Fig. UW-16: tmin1= from UW-16(b) Between Nozzle and Shell tmin= Min(tv,tn,tmin1) =MIN(0.551,0.719,0.75) Calulation of (tc) UW UW-16(b) 16(b) tc1 =0.7*0.551 = tc2= 0.7*tmin =Mim.(0.25,0.386) tc= Min.(tc1,tc2) By considering equal fillet weld =2^1/2*0.25 Leg of outward nozzle weld = 21/2*tc use Leg41 = Leg43
0.250 in 0.386 in 0.250 in
6.35 9.80 6.35
mm
0.354 in 0.472 in
8.98 12.00
mm
Between Reinforcing and Shell tmin= Min(tv,te,tmin1) =MIN(0.551,0,0.75) =2^1/2*0/2 Leg of outward nozzle weld = 21/2*tmin/2 Use Leg42 =
0.000 in 0.000 in 0.000 in
0.00 0.00 0.00
mm
mm mm
mm
mm mm
MDMT for the nozzle :1- For W.N. flange B16.5
MDMT W/O impact test {UCS-66(C)} 2- For nozzle pipe SA-106 Gr. B, curve B Min temp. at nominal thk. W/O impact test (UCS-66) Nominal thk. of nozzle (tn) Required thk. of nozzle wall (trn) Ratno = trn * E / ( tn - c ) Reduction in MDMT = (1 - ratio)*100 OF (Fig. UCS-66.1) MDMT at required thk. W/O impact test (UCS-66.1) MDMT for the nozzle (assembly)
-20
O
F
O 13 F 0.719 in 0.005 in 0.01 < -99.07 O F -86.07 O F
-20
O
F
-29
O
C
O C -11 18.263 mm 0.13 mm 0.35 O -72.74 C O -65.53 C
-29
O
C
Page ( 6 / 41 )
ASME Code VIII Div. I Edition 2004, Addenda 2005
Nozzle (N1)
Pressure Vessel Calculation
(8")
Sheet (1/2)
Head Data SA-516 Gr 70 M 138000 1.00 mm 14 2.362 914.5 4.000
20,000 in 0.551 0.093 36.0 0.157
:- Shell material. :- (Sv), Max. allowable stress -(Kpa, (psi)) :- (E1), efficiency of shell at nozzle. :- (tv), wall thick, uncorroded :- (tr), required wall thickness :- (Rsi), inside radius of shell :- (c), corrosion allowance
Nozzle Data: SA-106 Gr. B M 1.00 1.00 12.5% 88.9 3.500 Kpa psig 118000.00 118000 00 358.73
17,100 1 100 51.0
:- Nozzle material. :- (E) Nozzle Efficiency. :- (F) Correction factor. :- (Utp), undertolerance of nozzle pipe. :- (Do), Outside diameter - (mm, (in)) (S ) M ll bl stress t :- (Sn), Max. allowable : (P), (P=Pi+Ps) Internal Pressure
Nozzle Required Wall Thickness (trn) UG-27 (C)& Appendex 1-1
trn = P*(Do/2)/(Sn*E+0.4*P) By adding corrosion all. (AC)= trn+2*c By adding pipe tolerance = AC+UTP*trn
=51*(3.5/2)/(17100*1+0.4*51)= =0.005+(2*0.157) = =0.163+0.125*0.005 =
Use Nozzle 8" Sch120 B36.10M (tn) Variables: Under tolerance(UT) = Nozzle corroded thickness (tc) = Nozzle Inside corroded Diameter (d) = Nozzle corroded inside raduis (Ron) = Nozzle uncorroded inside raduis (Rn) = Vessle corroded thk.(t) =
tn*UTp = 0.719 * 0.125 tn-c-UT = 0.719-0.157-0.09 Do-2*tc Do/2 d/2 tv-c
= 3.5 - 2*0.472 = 2.557/2 = 2.56/2 = 0.551 - 0.157
UT = tc =
0.005 0.163 0.163 0.719
in in in in
0.13 4.13 4.15 18.26
mm mm mm mm
0.090 0.472
in in
2.28 11.98 64.94 44.45 32.47 10.00 10.26
mm mm
d = 2.557 Ron = 1.75 Rn = 1.28 t= 0.394 Nominal thk. of internal projection of nozzle wall (ti) =tn-2c =0.719-(2*0.157) = ti= 0.404 Extension of nozzle beyond the inside surface of the vessel wall (h) = min. of {(2.5*tv),(2.5*ti) h = Min.{(2.5*0.551),(2.5*0.404)= h= 1.010 fr1 = MIN(Sn/Sv,1) = MIN(17100/20000, 1) fr1 = 0.855 fr2 = MIN(Sn/Sv,1) = MIN(17100/20000, 1) fr2 = 0.855 MIN(Sn/Sv,Sp/Sv,1) fr3 = = MIN(17100/20000, 0/20000,1) fr3 = 0.000 fr4 = MIN(Sp/Sv,1) = MIN(0/20000,1) fr4 = 0.000
in in in in in in
mm mm mm mm mm
ASME Code VIII Div. I Edition 2004, Addenda 2005
Page ( 7 / 41 )
Pressure Vessel Calculation
Sheet (2/2)
Nozzle (N1) (8")
Nozzle Neck Thickness (UG-45): Wall thickness per UG-45(a) tr1=trn+c Wall thickness per UG-45(b) tr2=tr+c Wall thickness per UG-16(b) tr3=0.0625+c Wall thickness per UG-45(b)(4) tr4=(t std -Utp)+c The greater of tr2 or tr3 tr5 = The lesser of tr4 or tr5 tr6 = Required per UG-45 largest of tr1 or tr6 tr7= tr7≤ tn-Utp*tn
=0.005+0.157 = =0.093+0.157 = =0.0625+0.157 = =0.189+0.157 = =Max(0.25,0.22) = =Min(0.346,0.25) = =Max(0.163,0.25) = =0.25≤0.719-0.09
0.163 0.250 0.220 0.346 0.250 0.250 0.250
in in in in in in in
4.13 6.36 5.59 8.80 6.36 6.36 6.36
mm mm mm mm mm mm mm
0.750 in
19.05
mm
0.551 in
14.00
mm
Ok
Calulating Size of Fillet Weld (Leg41,Leg42) used UW-16&Fig. UW-16: tmin1= from UW-16(b) Between Nozzle and Shell tmin= Min(tv,tn,tmin1) =MIN(0.551,0.719,0.75) Calulation of (tc) UW UW-16(b) 16(b) tc1 =0.7*0.551 = tc2= 0.7*tmin =Mim.(0.25,0.386) tc= Min.(tc1,tc2) By considering equal fillet weld =2^1/2*0.25 Leg of outward nozzle weld = 21/2*tc use Leg41 = Leg43
0.250 in 0.386 in 0.250 in
6.35 9.80 6.35
mm
0.354 in 0.472 in
8.98 12.00
mm
Between Reinforcing and Shell tmin= Min(tv,te,tmin1) =MIN(0.551,0,0.75) =2^1/2*0/2 Leg of outward nozzle weld = 21/2*tmin/2 Use Leg42 =
0.000 in 0.000 in 0.000 in
0.00 0.00 0.00
mm
mm mm
mm
mm mm
MDMT for the nozzle :1- For W.N. flange B16.5
MDMT W/O impact test {UCS-66(C)} 2- For nozzle pipe SA-106 Gr. B, curve B Min temp. at nominal thk. W/O impact test (UCS-66) Nominal thk. of nozzle (tn) Required thk. of nozzle wall (trn) Ratno = trn * E / ( tn - c ) Reduction in MDMT = (1 - ratio)*100 OF (Fig. UCS-66.1) MDMT at required thk. W/O impact test (UCS-66.1) MDMT for the nozzle (assembly)
-20
O
F
O 13 F 0.719 in 0.005 in 0.01 < -99.07 O F -86.07 O F
-20
O
F
-29
O
C
O C -11 18.263 mm 0.13 mm 0.35 O -72.74 C O -65.53 C
-29
O
C
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