CALCULATION SHEET FOR
SPINNING-MEMBRANE DEAERATOR
(JOB NO.: 86811-345)
(DRAWING NO.: HMC-250
(13)-00. REV. 0)
3 2 1 0
REVISION DATE DESCRIPTION DESIGNED BY
ENGINEER
TECHNOLOGY DEPT. MANAGER
青岛畅隆电力设备有限公司
QINGDAO CHANGLONG POWER EQUIPMENT Co. Ltd
.
TABLE OF CONTENTS
1 DESIGN DATA 3
2 MAX. ALLOWABLE STRESS AT DESIGN TEMPERATURE 6
3 THICKNESS OF CYLINDRICAL SHELL UNDER INTERAL PRESSURE 7
4 THICKNESS OF ELLIPSOIDAL HEADS, PRESSURE ON CONCAVE SIDE 9
5 THICKNESS OF NOZZLE NECK UNDER INTERNAL PRESSURE 12
6 MAX. ALLOWABLE WORKING PRESSURE 21
7 HYDROSTATIC TEST PRESSURE AND TEMPERATURE 22
8 REINFORCEMENT FOR OPENINGS 23
9 PRESSURE-TEMPERATURE RATING FOR ASME FLANGE 139
10 THE CALCULATION OF LIFTING LUG 140
11 CHECK FOR STRENGTH AND STABILITY OF THE HORIZONTAL VESSEL 148
12 CHECK FOR POST WELD HEAT TREATMENT 152
1. DESIGN DATA:
(1)
APPLICABLE CODE
CUSTOMER SPECIFICATION
ASME BOILER AND PRESSURE VESSELS CODE SECTION Ⅷ DIVSION 1 2010 EDITION AND PED 97/23/EC
DOC. NO. 2011-83-1-86811-345-0/Rev 0
(2) DESIGN PRESSURE INTERNAL 0.65 MPa
(3) DESIGN TEMPERATURE 300℃
(4) TYPE OF JOINTS OF CATEGORIES A AND B TYPE NO.1
(5) RADIOGRAPHY SPOT PER UW-11(b)
(6) JOINT EFFICIENCY SHELL: 0.85, HEAD: 0.85, SHELL to HEAD: 0.85 (7) CORROSION ALLOWANCE(TANK/TOWER) 2.6 mm / 3.5 mm.
(8) MATERIAL SHELL & HEAD :SA-516MGr.485
NOZZLE: SA-106Gr.B FLANGE: SA-105M (9) MAX. ALLOWABLE STRESS AT DESIGN
TEMPERATURE(SEE TABLE 2.1 )
SA-105: 129.3MPa at 300℃ SA-106Gr.B: 125.3MPa at 300℃ SA-516MGr.485: 136MPa at 300℃
(10) HEAD TYPE 2:1 Standard Ellipsoidal Head
(11) CAPACITY (TANK / TOWER) 64.9 m3 /6.7 m3
(12) SERVICE FLUID WATER AND STEAM (no lethal)
(13) MIN. SERVICE TEMPERATURE -10℃
(14) THE LOADING CONSIDERED IN DESIGNING SEE TABLE 1-1
TABLE 1.1 LOADING CONSIDERED IN DESIGNING
DEAERATOR′S TANK
DEAERATOR′S TOWER
Item Description Yes
No
Yes
No
1 Internal
pressure
[
√ ]
[ ]
[ √ ]
[ ]
2 External pressure
[ ]
[ √ ]
[ ]
[ √ ]
3
Weight of vessel
[ √ ]
[ ]
[ √ ]
[ ]
4 Weight of normal contents under operation
conditions
[ √ ]
[ ]
[ ]
[√ ]
5
Weight of normal contents under test conditions
[ √ ]
[ ]
[ √ ]
[ ]
6 Superimposed static reactions from weight of
attached equipment
[ ]
[ √ ]
[ ]
[ √ ]
7
The attachments of internals
[ ]
[ √ ]
[ ]
[ √ ]
8 The attachments of vessel supports (skirt, legs,
saddles etc.)
[ √ ]
[ ]
[ √ ]
[ ]
9
The attachments of hanger
[ √ ]
[ ]
[ √ ]
[ ]
10 Cyclic and dynamic reactions due to pressure
[ ]
[ √ ]
[ ]
[ √ ]
11 Cyclic and dynamic reactions due to thermal
variations
[ ]
[ √ ]
[ ]
[ √ ]
12 Cyclic and dynamic reactions due to equipment
mounted on the vessel
[ ]
[ √ ]
[ ]
[ √ ]
13 Cyclic and dynamic reactions due to mechanical
loadings
[ ]
[ √ ]
[ ]
[ √ ]
14 Wind reactions
[ ]
[ √ ]
[ ]
[ √ ]
15 Snow reactions
[ ]
[ √ ]
[ ]
[ √ ]
16 Seismic reactions
[ ]
[ √ ]
[ ]
[ √ ]
17 Impact reactions, such as those due to fluid shock
[ ]
[ √ ]
[ ]
[ √ ]
18 Temperature gradients
[ ]
[ √ ]
[ ]
[ √ ]
19 Differential thermal expansion
[ ]
[ √ ]
[ ]
[ √ ]
20 Abnormal pressure, such as those caused by
deflagration
[ ]
[ √ ]
[ ]
[ √ ]
21 Test pressure and coincident static head acting
during the test
(See UG-99)
[√ ]
[ ]
[√ ]
[ ]
LIST OF NOZZLES
TABLE 1.2
NOZZLE NO. Q’TY SIZE TYPE DESCRIPTION REMARKS
A1 1 DN500 CLASS150SO RF MANHOLE SA-516MGr.485
A2 1 DN450 CLASS150SO RF MANHOLE SA-516MGr.485
B 1 DN200 WELDING STEAM CONNECT NOZZLE SA-106Gr.B
C1-2 2 DN80 WELDING RECYCLING NOZZLE SA-106Gr.B
D1-2 2 DN150 CLASS150SO RF SAFETY VALVE NOZZLE SA-106Gr.B
E 1 DN100 WELDING HP DRAIN INLET SA-106Gr.B
F 1 DN150 CLASS150SO RF CHECK-UP NOZZLE SA-106Gr.B
G 1 DN80 CLASS150SO RF EXHAUST NOZZLE SA-106Gr.B
H 1 DN200 WELDING FEED WATER INLET SA-106Gr.B
I 1 DN150 WELDING SUPPLY WATER INLET SA-106Gr.B
J 1 DN80 WELDING SECONDARY STEAM INLET SA-106Gr.B
K 1 DN200 WELDING STEAM INLET SA-106Gr.B
L 1 DN100 WELDING STEAM LEAKING FROM GATE POLE SA-106Gr.B
M 1 DN80 WELDING REBOILING NOZZLE SA-106Gr.B
N 1 DN150 WELDING OUTFALL NOZZLE SA-106Gr.B
O 1 DN250 WELDING DEAERATED WATER OURLET SA-106Gr.B
P1-2 2 DN10 WELDING SAMPLING WATER NOZZLE SA-106Gr.B
Q 1 DN200 WELDING WATER CONNECT NOZZLE SA-106Gr.B
R 1 DN250 WELDING DEAERATED WATER OURLET SA-106Gr.B
S 1 DN100 WELDING HIGH LEVEL ELECTRIC OFFLET SA-106Gr.B
NOZZLE NO. Q’TY SIZE TYPE DESCRIPTION REMARKS
U1-4 4 DN50 CLASS150SO RF EQUALIZER NOZZLE SA-106Gr.B
V1-2 2 DN20 INTERNAL THREAD BIMETALLIC THERMOMETER NOZZLE SA-105M
V3 1 DN20 INTERNAL THREAD RESISTANCE THERMOMETER NOZZLE SA-105M
W1-2 2 DN15 INTERNAL THREAD PRESSURE GAUGE SA-105M
W3 1 DN10 WELDING PRESSURE SIGNAL NOZZLE SA-106Gr.B
X1-2 2 DN50 CLASS150PL. RF LEVEL GAUGE NOZZLE SA-106Gr.B
Y1 1 DN100 WELDING DRAIN INLET SA-106Gr.B
Z1-2 2 DN50 CLASS150SO RF ELECTRIC CONTACT LEVEL GAUGE NOZZLE SA-106Gr.B
Y2 1 DN80 WELDING WATER FROM SLAG-COOLER INLET SA-106Gr.B
Note: Bolt holes of flanges shall straddle center line of the vessel.
2. MAX. ALLOWABLE STRESS AT DESIGN TEMPERATURE
TABLE 2.1
ALLOWABLE STRESS VALUE (MPa) YIELD STRENGTH VALUE (MPa)
TENSILE STRENGTH VALUE (MPa)
ASME PED ASME ASME
300℃ 20℃ 300℃ 20℃ 300℃ 20℃ 300℃ 20℃ SHELL AND HEAD MATERIAL
SA-516MGr.485 136 138 136 174.6 204 262 483 483 PIPE MATERIAL SA-106Gr.B 118 118 125.3 160.6 188 241 414 414 FLANGE MATERIAL SA-105 129 138 129.3 165.3 194 248 483 483 BOLT MATERIAL SA-193.B7 130 130 287 287 595 724 689 689
注
/
NOTE: 1 材料的许用应力取值依据 PED/97/23/EC 附录Ⅰ规定:
MATERIAL ALLOWANCE STRESS VALUE IS IN ACCORDANCE WITH PED/97/23/EC REGULATION
ANNEX Ⅰ:
1. 对材料/FOR MATERIAL SA-516MGr.485: Re/t=204MPa, Rm/20=483MPa, Sd=MIN{Re/t×2/3, Rm/20×5/12}=136 MPa
2. 对 材 料 /FOR MATERIAL SA-106Gr.B: Re/t=188MPa, Rm/20=414MPa, Sd=MIN{Re/t × 2/3, Rm/20×5/12}=125.3 MPa
3. 对材料/FOR MATERIAL SA-105: Re/t=194MPa, Rm/20=483MPa, Sd=MIN{Re/t×2/3, Rm/20× 5/12}=129.3 MPa
4. 对材料/FOR MATERIAL SA-193.B7: Re/t=595MPa, Rm/20=689MPa, Sd=MIN{Re/t×2/3, Rm/20 ×5/12}=287 MPa
3. THICKNESS OF CYLINDRICAL SHELL UNDER INTERNAL PRESSURE 3-1 DEAERATOR′S TANK:
ASME SEC.Ⅷ DIV.1 UG-27
z Part : Shell of tank
z Design pressure P (MPa) : 0.65
z Design temperature (℃) : 300
z Material : SA-516MGr.485
z Maximum allowable stress value at design temperature Sd (MPa) : 136
z Maximum allowable stress value at test temperature St (MPa) : 174.6
z Height to point under consideration H (m) : 6.769 z Density of test medium (water) at test temperature ρ (kg/m3) : 1000
z Type of welded joints in TABLE UW-12 : Type No. (1)
z Radiographic examination : SPOT
Per UW-11(b) z Joint efficiency (specified in UW-12) E : 0.85
z Negative Deviation: C1 (mm) : 0.3
z Corrosion allowance (designated by customer) C2 (mm) : 2.6
z Nominal shell thickness tn (mm) 16
z Inside radius corroded R (mm) : 1402.6
z Final center line radius Rf (mm) : 1408
z Original center line radius (specified in UCS-79) Ro (mm) : ∞(Infinity)
z Shell length L (mm) : 9280
z Total weight WT (kg) : 95000
z Reaction at each saddle Q (N) : 465975
z Head depth H (mm) : 700
z Saddle to tangent line A (mm) : 1140
(1) Thickness calculation for shells under internal pressure with supplemental loading. Here three cases must be investigated:
(a) circumferential stress due to internal pressure
internal pressure.
(c) Longitudinal compressive stress due to bending.
Case 1 circumferential tensile stress. In this horizontal vessel; the equation in UG-27 (c)(1) is used: P = 0.65 + ρgH/106 = 0.65 + 1000×9.81×6.769/106 = 0.7165 MPa
mm
P
E
S
PR
t
d73
.
8
7165
.
0
6
.
0
85
.
0
136
6
.
1402
7165
.
0
6
.
0
1×
−
×
=
×
=
−
=
Case 2 longitudinal tensile stress. The following equation combines longitudinal tensile stress due to pressure with the longitudinal tensile stress due to bending at the midpoint between two saddles: t2 =
P
SE
PR
4
.
0
2
+
±⎥
⎥
⎥
⎥
⎦
⎤
⎢
⎢
⎢
⎢
⎣
⎡
−
+
−
+
×
L
A
L
H
L
H
R
SE
R
QL
4
3
4
1
)
(
2
1
4
2 2 2 2π
=7165
.
0
4
.
0
85
.
0
136
2
6
.
1402
7165
.
0
×
+
×
×
×
±⎥
⎥
⎥
⎥
⎦
⎤
⎢
⎢
⎢
⎢
⎣
⎡
×
−
×
×
+
−
+
×
×
×
×
×
9280
1140
4
9280
3
700
4
1
9280
)
700
6
.
1402
(
2
1
85
.
0
136
6
.
1402
4
9280
465975
2 2 2 2π
= 4.35 ± 1.514×(0.9242-0.4914) = 4.35 ± 0.656 = 5.006 mmCase 3 Longitudinal compressive stress. First determine the allowable compressive stress [see UG-23(b)] A =
t
R
O/
125
.
0
=16
/
6
.
1418
125
.
0
= 0.00141 B= 70 MPa (from Fig. CS-2)The general equation for thickness is the same as for longitudinal tensile stress except the pressure portion drops out since the most servere condition occurs when there is no pressure in the vessels. t3 =
⎥
⎥
⎥
⎥
⎦
⎤
⎢
⎢
⎢
⎢
⎣
⎡
−
+
−
+
×
L
A
L
H
L
H
R
SE
R
QL
4
3
4
1
)
(
2
1
4
2 2 2 2π
=
⎥
⎥
⎥
⎥
⎦
⎤
⎢
⎢
⎢
⎢
⎣
⎡
×
−
×
×
+
−
+
×
×
×
×
×
9280
1140
4
9280
3
700
4
1
9280
)
700
6
.
1402
(
2
1
85
.
0
70
6
.
1402
4
9280
465975
2 2 2 2π
= 2.94×(0.9242-0.4914) = 1.28 mm (2) Design thicknessRequired minimum shell thickness including allowance t = max(t1,t2,t3) + C1+C2 = 8.73+0.3+2.6 = 11.63 mm
(3) Provided thickness
Nominal thickness (mm) 16 > t OK
(4) Check minimum required thickness for paragraph UG-16 (b) (4)
Minimum thickness required (including corrosion allowance) : 2.5 + 2.6 = 5.1 mm, nominal thickness is 16 mm > 5.1 mm, OK
(5) Check extreme fiber elongation for paragraph UCS-79
Maximum allowable fiber elongation without post weld heat treatment is based on the following formula: For single curvature
%
5
%
569
.
0
%
1408
1
1408
16
50
%
1
50
0<
=
⎟
⎠
⎞
⎜
⎝
⎛
∞
−
×
×
=
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
−
=
R
R
R
t
r
f f3-2 DEAERATOR′S TOWER:
ASME SEC.Ⅷ DIV.1 UG-27
z Part : Shell of tower
z Design pressure P (MPa) : 0.65
z Design temperature (℃) : 300
z Material : SA-516MGr.485
z Maximum allowable stress value at design temperature Sd (MPa) : 136
z Maximum allowable stress value at test temperature St (MPa) : 174.6
z Height to point under consideration H (m) : 2.950 z Density of test medium (water) at test temperature ρ (kg/m3) : 1000
z Type of welded joints in TABLE UW-12 : Type No. (1)
z Radiographic examination : SPOT
Per UW-11(b) z Joint efficiency (specified in UW-12) E : 0.85
z Negative Deviation: C1 (mm) : 0.3
z Corrosion allowance (designated by customer) C2 (mm) : 3.5
z Nominal shell thickness tn (mm) 12
z Inside radius corroded R (mm) : 903.5
z Final center line radius Rf (mm) : 906
z Original center line radius (specified in UCS-79) Ro (mm) : ∞(Infinity)
(1) Required minimum shell thickness excluding allowance (circumferential stress) 0.385SE = 0.385×136×0.85=44.506> P according to UG-27(b)&(c) (a) For design condition
mm
P
E
S
PR
t
d10
.
5
65
.
0
6
.
0
85
.
0
136
5
.
903
65
.
0
6
.
0
1 min×
−
×
=
×
=
−
=
mm
H
E
S
R
H
P
E
S
PR
t
t t12
.
4
15
.
0
97
.
3
)
10
/
1000
95
.
2
81
.
9
(
6
.
0
85
.
0
6
.
174
5
.
903
10
/
1000
95
.
2
81
.
9
65
.
0
6
.
0
85
.
0
6
.
174
5
.
903
65
.
0
)
10
/
81
.
9
(
6
.
0
)
10
/
81
.
9
(
6
.
0
6 6 6 6 2 min=
+
=
×
×
×
−
×
×
×
×
+
×
−
×
×
=
−
+
−
=
ρ
ρ
(2) Design thicknessRequired minimum shell thickness including allowance T = max(tmin1,tmin2)+C1+C2 = 5.10 + 0.3 + 3.5 = 8.9 mm
(3) Provided thickness
Nominal thickness (mm) 12 > t OK
(4) Check minimum required thickness for paragraph UG-16 (b) (4)
Minimum thickness required (including corrosion allowance) : 2.5 + 3.5 = 6.0 mm, nominal thickness is 12 mm> 6.0 mm, OK
(5) Check extreme fiber elongation for paragraph UCS-79
Maximum allowable fiber elongation without post weld heat treatment is based on the following formula: For single curvature
%
5
%
663
.
0
%
906
1
906
12
50
%
1
50
0<
=
⎟
⎠
⎞
⎜
⎝
⎛
∞
−
×
×
=
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
−
=
R
R
R
t
r
f fNone of the conditions in UCS-79 (1~5) apply, so no heat treatment after cold forming need to apply.
4. THICKNESS OF ELLIPSOIDAL HEAD, PRESSURE ON CONCAVE SIDE 4-1 DEAERATOR′S TANK:
ASME SEC.Ⅷ DIV.1 UG-32
●Part : Heads of tank
●Design pressure P (MPa) : 0.65
●Design temperature (℃) : 300
●Material : SA-516MGr.485
●Maximum allowable stress value at design temperature Sd (MPa) : 136
●Maximum allowable stress value at test temperature St (MPa) : 174.6 ●Height to point under consideration (left head) H (m) : 6.769 ●Height to point under consideration (right head) H (m) : 6.769 ●Density of test medium at test temperature ρ(kg/m3) : 1000
Type of welded joints in TABLE UW-12 : Type No. (1)
Radiographic examination : SPOT
Per UW-11(b)
●Weld joining heads to shell : Type No. (1),
SPOT Per UW-11(b)
●Joint efficiency (specified in UW-12(d)) E : 0.85
Negative Deviation: C1 (mm) : 0.3
●Corrosion allowance (designated by customer) C2 (mm) : 2.6
●Inside diameter of ellipsoidal head (corroded) D 2805.2
●Inside spherical radius of hemispherical head R (mm) : 1402.6 ●Crown final centerline radius (specified in UG-32(d)
and UCS-79)
Rf (mm) : 2528
●Knuckle final centerline radius (specified in UG-32(d) and UCS-79)
rf (mm) : 482.96
(1) Required minimum head thickness
Without joint, according to UW-12(d), E=0.85, L = 0.9D = 0.9×2805.2 = 2524.68 mm ts/L = 13.92/2524.68=0.00552 > 0.002 according to UG-32(d)
(a) For the left head according to UG-32(d) (a-1) for design condition
Required minimum head thickness excluding allowance tmin
mm
P
E
S
PD
t
d90
.
7
65
.
0
2
.
0
85
.
0
136
2
2
.
2805
65
.
0
2
.
0
2
1 min×
×
−
×
=
×
=
−
=
(b) For the right head
(b-1) for design condition
Required minimum head thickness excluding allowance tmin
mm
P
E
S
PD
t
d90
.
7
65
.
0
2
.
0
85
.
0
136
2
2
.
2805
65
.
0
2
.
0
2
2 min×
×
−
×
=
×
=
−
=
(b-2) for hydrostatic test condition
(Due to same dimension for ellipsoidal heads, the bottom head will be applied for calculation)
mm
H
E
S
D
H
P
E
S
PD
t
t t78
.
6
63
.
0
15
.
6
)
10
/
1000
769
.
6
81
.
9
(
2
.
0
85
.
0
6
.
174
2
2
.
2805
10
/
1000
769
.
6
81
.
9
65
.
0
2
.
0
85
.
0
6
.
174
2
2
.
2805
65
.
0
)
10
/
81
.
9
(
2
.
0
2
)
10
/
81
.
9
(
2
.
0
2
6 6 6 6 3 min=
+
=
×
×
×
−
×
×
×
×
×
+
×
−
×
×
×
=
−
+
−
=
ρ
ρ
(2) Design thicknessRequired minimum head thickness including allowance t= max(tmin1,tmin2,tmin3) + C1+C2 = 7.90 + 0.3 + 2.6 = 10.8 mm
(3) Provided thickness
Nominal thickness (mm) 16
Minimum thickness after forming (mm) 13.92 ≥ t OK
(4) Check minimum head thickness for hemispherical head from paragraph UG-32 (b) & (f) 0.665SE = 0.665 × 136× 0.85 = 76.874 MPa >P
Required minimum hemispherical head thickness
mm
P
SE
PL
t
h7
.
11
65
.
0
2
.
0
85
.
0
136
2
68
.
2524
65
.
0
2
.
0
2
min×
×
−
×
=
×
=
−
=
Tr = t
minh/E= 7.11/0.85 = 8.37 mm < 13.92 mm OK
(5) Check minimum required thickness for paragraph UG-16(b)(4)
Minimum thickness required (including corrosion allowance) : 2.5+2.6 = 5.1mm, minimum thickness after forming is 13.92 mm.> 5.1 mm OK
(6) Check extreme fiber elongation for paragraph UCS-79
Maximum allowable fiber elongation without heat treatment is based on the following formula: For double curvature
Crown radius elongation
%
5
%
475
.
0
%
2528
1
2528
16
75
%
1
75
0<
=
⎟
⎠
⎞
⎜
⎝
⎛
∞
−
×
×
=
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
−
=
R
R
R
t
r
f fKnuckle radius elongation
%
5
%
49
.
2
%
96
.
482
1
96
.
482
16
75
%
1
75
0<
=
⎟
⎠
⎞
⎜
⎝
⎛
∞
−
×
×
=
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
−
=
R
r
r
t
r
f fNone of the conditions listed in UCS-79(d)(1) through (5) exist, so no heat treatment of heads after cold forming need to apply for SA-516MGr.485 (P-NO.1 Group NO.2).
4-2 DEAERATOR′S TOWER:
ASME SEC.Ⅷ DIV.1 UG-32
●Part : Heads of tower
●Design pressure P (MPa) : 0.65
●Design temperature (℃) : 300
●Material : SA-516MGr.485
●Maximum allowable stress value at design temperature Sd (MPa) : 136 ●Maximum allowable stress value at test temperature St (MPa) : 174.6 ●Height to point under consideration (bottom head) H (m) : 3.437 ●Height to point under consideration (top head) H (m) : 0.787 ●Density of test medium at test temperature ρ(kg/m3) : 1000
Type of welded joints in TABLE UW-12 : Type No. (1)
Radiographic examination : SPOT
Per UW-11(b)
●Weld joining heads to shell : Type No. (1),
SPOT Per UW-11(b)
●Joint efficiency (specified in UW-12(d)) E : 0.85
Negative Deviation: C1 (mm) : 0.3
●Corrosion allowance (designated by customer) C2 (mm) : 3.5 ●Inside diameter of ellipsoidal head (corroded) D 1807 ●Inside spherical radius of hemispherical head R (mm) : 903.5 ●Crown final centerline radius (specified in UG-32(d)
and UCS-79)
Rf (mm) : 1626
●Knuckle final centerline radius (specified in UG-32(d) and UCS-79)
rf (mm) : 311.22
●Original center line radius (specified in UCS-79) R0 (mm) : ∞(Infinity) (1) Required minimum head thickness
ts/L = 10.44/1626.3 =0.00642 > 0.002 according to UG-32(d)
(a) For the top head according to UG-32(d) (a-1) for design condition
Required minimum head thickness excluding allowance tmin
mm
P
E
S
PD
t
d09
.
5
65
.
0
2
.
0
85
.
0
136
2
1807
65
.
0
2
.
0
2
1 min×
×
−
×
=
×
=
−
=
(b) For the bottom head (b-1) for design condition
Required minimum head thickness excluding allowance tmin
mm
P
E
S
PD
t
d09
.
5
65
.
0
2
.
0
85
.
0
136
2
1807
65
.
0
2
.
0
2
2 min×
×
−
×
=
×
=
−
=
(b-2) for hydrostatic test condition
(Due to same dimension for ellipsoidal heads, the bottom head will be applied for calculation)
mm
H
E
S
D
H
P
E
S
PD
t
t t17
.
4
21
.
0
96
.
3
)
10
/
1000
437
.
3
81
.
9
(
2
.
0
85
.
0
6
.
174
2
1807
10
/
1000
437
.
3
81
.
9
65
.
0
2
.
0
85
.
0
6
.
174
2
1807
65
.
0
)
10
/
81
.
9
(
2
.
0
2
)
10
/
81
.
9
(
2
.
0
2
6 6 6 6 3 min=
+
=
×
×
×
−
×
×
×
×
×
+
×
−
×
×
×
=
−
+
−
=
ρ
ρ
(2) Design thicknessRequired minimum head thickness including allowance t=max(tmin1,tmin2,tmin3)+C1+C2= 5.09 + 0.3+3.5 = 8.89 mm
(3) Provided thickness
Nominal thickness (mm) 12
Minimum thickness after forming (mm) 10.44 ≥ t OK
(4) Check minimum head thickness for hemispherical head from paragraph UG-32 (b) & (f) 0.665SE = 0.665 × 136× 0.85 =76.874 MPa >P
mm
P
SE
PL
t
h4
.
58
65
.
0
2
.
0
85
.
0
136
2
3
.
1626
65
.
0
2
.
0
2
min×
×
−
×
=
×
=
−
=
tr=t
minh/E= 4.58/0.85 = 5.39 mm < 10.44 mm OK
(5) Check minimum required thickness for paragraph UG-16(b)(4)
Minimum thickness required (including corrosion allowance) : 2.5 + 3.5 = 6.0 mm, minimum thickness after forming is 10.44 mm.> 6.0 mm OK
(6) Check extreme fiber elongation for paragraph UCS-79
Maximum allowable fiber elongation without heat treatment is based on the following formula: For double curvature
Crown radius elongation
%
5
%
554
.
0
%
1626
1
1626
12
75
%
1
75
0<
=
⎟
⎠
⎞
⎜
⎝
⎛
∞
−
×
×
=
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
−
=
R
R
R
t
r
f fKnuckle radius elongation
%
5
%
892
.
2
%
22
.
311
1
22
.
311
12
75
%
1
75
0<
=
⎟
⎠
⎞
⎜
⎝
⎛
∞
−
×
×
=
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
−
=
R
r
r
t
r
f fNone of the conditions listed in UCS-79(d)(1) through (5) exist, so no heat treatment of heads after cold forming need to apply for SA-516MGr.485 (P-NO.1 Group NO.2).
5. THICKNESS OF NOZZLE NECK INTERNAL PRESSURE 5-1 DEAERATOR′S TANK:
5-1-1 FOR NOZZLE A1 ASME SEC.Ⅷ DIV.1 UG-45
●Design pressure P (MPa) : 0.65
●Design temperature T (℃) : 300
●Material of nozzle neck : SA-516M Gr.485
●Allowable stress of nozzle neck material at design
temperature Sd (MPa) : 136
●Allowable stress of nozzle neck material at test
temperature St (MPa) : 174.6
●Material of head : SA-516M Gr.485
● Allowable stress of shell (or head) at design
temperature Ss (MPa) : 136
●Height to point under consideration H (m) : 6.387
●Density of test medium at test temperature (water) ρ(k/m3) : 1000
●Type of welded joints of nozzle neck in TABLE UW-12
Type No. (1)
●Radiographic examination of nozzle neck SPOT Per UW-11(b) ●Joint efficiency of nozzle neck (specified in UW-12) E : 0.85
●Negative Deviation: C1 (mm) : 0.3
●Corrosion allowance (designated by customer) C2 (mm) : 2.6
●Outside radius of nozzle neck Ro (mm) : 254
●Inside radius of nozzle corroded R (mm) : 244.6
●Inside radius of shell corroded Rs (mm) : 1402.6
●Final center line radius of nozzle Rf (mm) : 248
●Original center line radius of nozzle R0 (mm) : ∞(Infinity) (1) Minimum required thickness of nozzle par. UG-45 (a) and UG-27 (c) (1)
0.385SE = 0.385×136×0.85 = 44.506 > P
Required minimum thickness including allowance
mm
C
P
E
S
PR
t
d29
.
4
9
.
2
39
.
1
6
.
2
3
.
0
65
.
0
6
.
0
85
.
0
136
6
.
244
65
.
0
6
.
0
1 min×
−
×
+
+
=
+
=
×
=
+
−
=
(b) under hydrostatic test condition
Required minimum thickness including allowance
mm
C
H
E
S
R
H
P
E
S
PR
t
t t09
.
4
9
.
2
11
.
0
08
.
1
6
.
2
3
.
0
)
10
/
1000
387
.
6
81
.
9
(
6
.
0
85
.
0
6
.
174
6
.
244
10
/
1000
387
.
6
81
.
9
65
.
0
6
.
0
85
.
0
6
.
174
6
.
244
65
.
0
)
10
/
81
.
9
(
6
.
0
)
10
/
81
.
9
(
6
.
0
6 6 6 6 2 min=
+
+
=
+
+
×
×
×
−
×
×
×
×
+
×
−
×
×
=
+
−
+
−
=
ρ
ρ
(c) With supplemental loading by flange and cover
●
Weight of flange and cover W = 250 kg
●Bending moment due to supplemental loading
Under operating condition M
1= 250×9.81×0.166= 408 N·m
Under cover opened condition M
2= 250×9.81×0.466=1143 N·m
Per UG-27(c) and Appendix L, Use S = 136 × 1.5 = 204 MPa (see UG-23(c))
mm
C
SE
R
M
P
SE
PR
t
4
.
3
9
.
2
000013
.
0
46
.
0
6
.
2
3
.
0
85
.
0
204
6
.
244
408
65
.
0
4
.
0
85
.
0
204
2
6
.
244
65
.
0
4
.
0
2
2 21 3≈
+
+
=
+
+
×
×
×
+
×
+
×
×
×
=
+
+
+
=
π
π
mm
C
SE
R
M
t
0
.
3
2
.
6
0
.
00004
2
.
9
3
.
0
85
.
0
204
6
.
244
1143
2 2 2 4=
π
+
=
π
×
×
×
+
+
=
+
≈
(2) Provided thicknessNominal thickness (mm) 12 > tmin1,tmin2,t3,t4 OK
(3) Check extreme fiber elongation for paragraph UCS-79
Maximum allowable fiber elongation without post weld heat treatment is based on the following formula: for single curvature
%
5
%
42
.
2
%
248
1
248
12
50
%
1
50
0<
=
⎟
⎠
⎞
⎜
⎝
⎛
∞
−
×
×
=
⎟⎟
⎠
⎞
⎜⎜
⎝
⎛
−
=
R
R
R
t
r
f fNone of the condition list in UCS-79 (d) (1-5) exists, so no heat treatment after cold forming need to apply.
5-1-2 FOR NOZZLE B.K ASME SEC.Ⅷ DIV.1 UG-45
●Design pressure P (MPa) : 0.65
●Design temperature T (℃) : 300
●Material of nozzle neck : SA-106Gr.B
●Allowable stress of nozzle neck material at design
temperature Sd (MPa) : 125.3
●Allowable stress of nozzle neck material at test
temperature St (MPa) : 160.6
●Material of shell : SA-516MGr.485
● Allowable stress of shell (or head) at design
temperature Ss (MPa) : 136
●Height to point under consideration H (m) : 3.953
●Density of test medium at test temperature (water) ρ(kg/m3) : 1000 ●Type of welded joints of nozzle neck in TABLE
UW-12 : Seamless
●Joint efficiency of nozzle neck E : 1.0
●Corrosion allowance (designated by customer) C (mm) : 2.6
●Outside radius of nozzle neck Ro (mm) : 109.55
●Nominal thickness of the standard wall pipe(B36.10M) tstd (mm) : 8.18 ●Inside radius of shell corroded Rs (mm) : 1402.6 (1) Minimum required thickness of nozzle neck for par. UG-45 (a)
0.385SE = 0.385× 125.3 ×1.00 = 48.2405 > P (a) under design condition Appendix 1-1 Required minimum thickness including allowance
mm
C
P
E
S
PR
t
d o2
.
6
3
.
17
65
.
0
4
.
0
1
3
.
125
55
.
109
65
.
0
4
.
0
1 min×
+
×
+
=
×
=
+
+
=
(b) under hydrostatic test condition
mm
C
H
E
S
R
H
P
E
S
PR
t
t o t o08
.
3
6
.
2
03
.
0
45
.
0
6
.
2
)
10
/
1000
953
.
3
81
.
9
(
4
.
0
1
6
.
160
55
.
109
10
/
1000
953
.
3
81
.
9
65
.
0
4
.
0
1
6
.
160
55
.
109
65
.
0
)
10
/
81
.
9
(
4
.
0
)
10
/
81
.
9
(
4
.
0
6 6 6 6 2 min=
+
+
=
+
×
×
×
+
×
×
×
×
+
×
+
×
×
=
+
+
+
+
=
ρ
ρ
(2) Minimum required thickness of shell for par. UG-45 (b) (1),and UG-16 (b) (4), Es = 1.00
mm
5.1
6
.
2
2.5
33
.
9
6
.
2
73
.
6
6
.
2
65
.
0
6
.
0
1
136
6
.
1402
65
.
0
6
.
0
×
−
×
+
=
+
=
+
=
×
=
+
−
=
C
mm
>
P
E
S
PR
t
s s s st
s= 9.33 mm
(3) Minimum thickness of standard wall pipe including allowance for par. UG-45 (b) (4)
t
p=0.875t
std+ C = 0.875 × 8.18 + 2.6 = 9.76 mm
t
= (the smaller value of t
sor t
p) per UG-45(b)
= 9.33 mm. > t
min1,t
min2 (4) Provided thicknessNominal thickness (mm) 12.7
Minimum thickness (mm) 12.7×0.875 = 11.11 ≥ t OK
5-1-3 FOR NOZZLE C1-2. .M ASME SEC.Ⅷ DIV.1 UG-45
●Design pressure P (MPa) : 0.65
●Design temperature T (℃) : 300
●Material of nozzle neck : SA-106Gr.B
●Allowable stress of nozzle neck material at design
temperature Sd (MPa) : 125.3
●Allowable stress of nozzle neck material at test
temperature St (MPa) : 160.6
●Material of shell : SA-516MGr.485
● Allowable stress of shell (or head) at design
temperature Ss (MPa) : 136
●Height to point under consideration H (m) : 3.953 ●Density of test medium at test temperature (water) ρ(kg/m3) : 1000 ●Type of welded joints of nozzle neck in TABLE
UW-12 : Seamless
●Joint efficiency of nozzle neck E : 1.0
●Corrosion allowance (designated by customer) C (mm) : 2.6
●Outside radius of nozzle neck Ro (mm) : 44.45
●Nominal thickness of the standard wall pipe(B36.10M) tstd (mm) : 5.49
●Inside radius of shell corroded Rs (mm) : 1402.6 (1) Minimum required thickness of nozzle neck for par. UG-45 (a)
0.385SE = 0.385× 125.3 ×1.00 = 48.2405 > P (a) under design condition Appendix 1-1 Required minimum thickness including allowance
mm
C
P
E
S
PR
t
d o2
.
6
2
.
84
65
.
0
4
.
0
1
3
.
125
45
.
44
65
.
0
4
.
0
1 min×
+
×
+
=
×
=
+
+
=
(b) under hydrostatic test condition
Required minimum thickness including allowance
mm
C
H
E
S
R
H
P
E
S
PR
t
t o t o8
.
2
6
.
2
02
.
0
18
.
0
6
.
2
)
10
/
1000
953
.
3
81
.
9
(
4
.
0
1
6
.
160
45
.
44
10
/
1000
953
.
3
81
.
9
65
.
0
4
.
0
1
6
.
160
45
.
44
65
.
0
)
10
/
81
.
9
(
4
.
0
)
10
/
81
.
9
(
4
.
0
6 6 6 6 2 min=
+
+
=
+
×
×
×
+
×
×
×
×
+
×
+
×
×
=
+
+
+
+
=
ρ
ρ
(2) Minimum required thickness of shell for par. UG-45 (b) (1),and UG-16 (b) (4), Es = 1.00
mm
5.1
6
.
2
2.5
33
.
9
6
.
2
73
.
6
6
.
2
65
.
0
6
.
0
1
136
6
.
1402
65
.
0
6
.
0
×
−
×
+
=
+
=
+
=
×
=
+
−
=
C
mm
>
P
E
S
PR
t
s s s st
s= 9.33 mm
(3) Minimum thickness of standard wall pipe including allowance for par. UG-45 (b) (4)
t
p=0.875t
std+ C = 0.875 × 5.49 + 2.6 = 7.41 mm
t
= (the smaller value of t
sor t
p) per UG-45(b)
= 7.41 mm. > t
min1,t
min2 (4) Provided thicknessNominal thickness (mm) 11.13
5-1-4 FOR NOZZLE D1 ASME SEC.Ⅷ DIV.1 UG-45
●Design pressure P (MPa) : 0.65
●Design temperature T (℃) : 300
●Material of nozzle neck : SA-106Gr.B
●Allowable stress of nozzle neck material at design
temperature Sd (MPa) : 125.3
●Allowable stress of nozzle neck material at test
temperature St (MPa) : 160.6
●Material of shell : SA-516MGr.485
● Allowable stress of shell (or head) at design
temperature Ss (MPa) : 136
●Height to point under consideration H (m) : 3.953
●Density of test medium at test temperature (water) ρ(kg/m3) : 1000 ●Type of welded joints of nozzle neck in TABLE
UW-12 : Seamless
●Joint efficiency of nozzle neck E : 1.0
●Corrosion allowance (designated by customer) C (mm) : 2.6
●Outside radius of nozzle neck Ro (mm) : 84.15
●Nominal thickness of the standard wall pipe(B36.10M) tstd (mm) : 7.11 ●Inside radius of shell corroded Rs (mm) : 1402.6 (1) Minimum required thickness of nozzle neck for par. UG-45 (a)
0.385SE = 0.385× 125.3 ×1.00 = 48.2405 > P (a) under design condition Appendix 1-1 Required minimum thickness including allowance
mm
C
P
E
S
PR
t
d o2
.
6
3
.
04
65
.
0
4
.
0
1
3
.
125
15
.
84
65
.
0
4
.
0
1 min×
+
×
+
=
×
=
+
+
=
(b) under hydrostatic test condition
mm
C
H
E
S
R
H
P
E
S
PR
t
t o t o98
.
2
6
.
2
03
.
0
35
.
0
6
.
2
)
10
/
1000
953
.
3
81
.
9
(
4
.
0
1
6
.
160
15
.
84
10
/
1000
953
.
3
81
.
9
65
.
0
4
.
0
1
6
.
160
15
.
84
65
.
0
)
10
/
81
.
9
(
4
.
0
)
10
/
81
.
9
(
4
.
0
6 6 6 6 2 min=
+
+
=
+
×
×
×
+
×
×
×
×
+
×
+
×
×
=
+
+
+
+
=
ρ
ρ
(2) Minimum required thickness of shell for par. UG-45 (b) (1),and UG-16 (b) (4), Es = 1.00
mm
5.1
6
.
2
2.5
33
.
9
6
.
2
73
.
6
6
.
2
65
.
0
6
.
0
1
136
6
.
1402
65
.
0
6
.
0
×
−
×
+
=
+
=
+
=
×
=
+
−
=
C
mm
>
P
E
S
PR
t
s s s st
s= 9.33 mm
(3) Minimum thickness of standard wall pipe including allowance for par. UG-45 (b) (4)
t
p=0.875t
std+ C = 0.875 × 7.11 + 2.6 = 8.82 mm
t
= (the smaller value of t
sor t
p) per UG-45(b)
= 8.82 mm. > t
min1,t
min2 (4) Provided thicknessNominal thickness (mm) 10.97
Minimum thickness (mm) 10.97×0.875 = 9.6 ≥ t OK
5-1-5 FOR NOZZLE L ASME SEC.Ⅷ DIV.1 UG-45
●Design pressure P (MPa) : 0.65
●Design temperature T (℃) : 300
●Material of nozzle neck : SA-106Gr.B
●Allowable stress of nozzle neck material at design
temperature Sd (MPa) : 125.3
●Allowable stress of nozzle neck material at test
temperature St (MPa) : 160.6
●Material of shell : SA-516MGr.485
● Allowable stress of shell (or head) at design
temperature Ss (MPa) : 136
●Height to point under consideration H (m) : 3.953 ●Density of test medium at test temperature (water) ρ(kg/m3) : 1000 ●Type of welded joints of nozzle neck in TABLE
UW-12 : Seamless
●Joint efficiency of nozzle neck E : 1.0
●Corrosion allowance (designated by customer) C (mm) : 2.6
●Outside radius of nozzle neck Ro (mm) : 57.15
●Nominal thickness of the standard wall pipe(B36.10M) tstd (mm) : 6.02
●Inside radius of shell corroded Rs (mm) : 1402.6 (1) Minimum required thickness of nozzle neck for par. UG-45 (a)
0.385SE = 0.385× 125.3 ×1.00 = 48.2405 > P (a) under design condition Appendix 1-1 Required minimum thickness including allowance
mm
C
P
E
S
PR
t
d o2
.
6
2
.
9
65
.
0
4
.
0
1
3
.
125
15
.
57
65
.
0
4
.
0
1 min×
+
×
+
=
×
=
+
+
=
(b) under hydrostatic test condition
Required minimum thickness including allowance
mm
C
H
E
S
R
H
P
E
S
PR
t
t o t o86
.
2
6
.
2
02
.
0
24
.
0
6
.
2
)
10
/
1000
953
.
3
81
.
9
(
4
.
0
1
6
.
160
15
.
57
10
/
1000
953
.
3
81
.
9
65
.
0
4
.
0
1
6
.
160
15
.
57
65
.
0
)
10
/
81
.
9
(
4
.
0
)
10
/
81
.
9
(
4
.
0
6 6 6 6 2 min=
+
+
=
+
×
×
×
+
×
×
×
×
+
×
+
×
×
=
+
+
+
+
=
ρ
ρ
(2) Minimum required thickness of shell for par. UG-45 (b) (1),and UG-16 (b) (4), Es = 1.00
mm
5.1
6
.
2
2.5
33
.
9
6
.
2
73
.
6
6
.
2
65
.
0
6
.
0
1
136
6
.
1402
65
.
0
6
.
0
×
−
×
+
=
+
=
+
=
×
=
+
−
=
C
mm
>
P
E
S
PR
t
s s s st
s= 9.33 mm
(3) Minimum thickness of standard wall pipe including allowance for par. UG-45 (b) (4)
t
p=0.875t
std+ C = 0.875 ×6.02 + 2.6 = 7.87 mm
t
= (the smaller value of t
sor t
p) per UG-45(b)
= 7.87 mm. > t
min1,t
min2 (4) Provided thicknessNominal thickness (mm) 11.13
5-1-6 FOR NOZZLE N ASME SEC.Ⅷ DIV.1 UG-45
●Design pressure P (MPa) : 0.65
●Design temperature T (℃) : 300
●Material of nozzle neck : SA-106Gr.B
●Allowable stress of nozzle neck material at design
temperature Sd (MPa) : 125.3
●Allowable stress of nozzle neck material at test
temperature St (MPa) : 160.6
●Material of shell : SA-516MGr.485
● Allowable stress of shell (or head) at design
temperature Ss (MPa) : 136
●Height to point under consideration H (m) : 6.919
●Density of test medium at test temperature (water) ρ(kg/m3) : 1000 ●Type of welded joints of nozzle neck in TABLE
UW-12 : Seamless
●Joint efficiency of nozzle neck E : 1.0
●Corrosion allowance (designated by customer) C (mm) : 2.6
●Outside radius of nozzle neck Ro (mm) : 84.15
●Nominal thickness of the standard wall pipe(B36.10M) tstd (mm) : 7.11 ●Inside radius of shell corroded Rs (mm) : 1402.6 (1) Minimum required thickness of nozzle neck for par. UG-45 (a)
0.385SE = 0.385× 125.3 ×1.00 = 48.2405 > P (a) under design condition Appendix 1-1 Required minimum thickness including allowance
mm
C
P
E
S
PR
t
d o2
.
6
3
.
04
65
.
0
4
.
0
1
3
.
125
15
.
84
65
.
0
4
.
0
1 min×
+
×
+
=
×
=
+
+
=
(b) under hydrostatic test condition
mm
C
H
E
S
R
H
P
E
S
PR
t
t o t o99
.
2
6
.
2
04
.
0
35
.
0
6
.
2
)
10
/
1000
919
.
6
81
.
9
(
4
.
0
1
6
.
160
15
.
84
10
/
1000
919
.
6
81
.
9
65
.
0
4
.
0
1
6
.
160
15
.
84
65
.
0
)
10
/
81
.
9
(
4
.
0
)
10
/
81
.
9
(
4
.
0
6 6 6 6 2 min=
+
+
=
+
×
×
×
+
×
×
×
×
+
×
+
×
×
=
+
+
+
+
=
ρ
ρ
(2) Minimum required thickness of shell for par. UG-45 (b) (1),and UG-16 (b) (4), Es = 1.00
mm
5.1
6
.
2
2.5
33
.
9
6
.
2
73
.
6
6
.
2
65
.
0
6
.
0
1
136
6
.
1402
65
.
0
6
.
0
×
−
×
+
=
+
=
+
=
×
=
+
−
=
C
mm
>
P
E
S
PR
t
s s s st
s= 9.33 mm
(3) Minimum thickness of standard wall pipe including allowance for par. UG-45 (b) (4)
t
p=0.875t
std+ C = 0.875 × 7.11 + 2.6 = 8.82 mm
t
= (the smaller value of t
sor t
p) per UG-45(b)
= 8.82 mm. > t
min1,t
min2 (4) Provided thicknessNominal thickness (mm) 10.97
Minimum thickness (mm) 10.97×0.875 = 9.6 ≥ t OK
5-1-7 FOR NOZZLE O.R ASME SEC.Ⅷ DIV.1 UG-45
●Design pressure P (MPa) : 0.65
●Design temperature T (℃) : 300
●Material of nozzle neck : SA-106Gr.B
●Allowable stress of nozzle neck material at design
temperature Sd (MPa) : 125.3
●Allowable stress of nozzle neck material at test
temperature St (MPa) : 160.6
●Material of shell : SA-516MGr.485
● Allowable stress of shell (or head) at design
temperature Ss (MPa) : 136
●Height to point under consideration H (m) : 6.919 ●Density of test medium at test temperature (water) ρ(kg/m3) : 1000 ●Type of welded joints of nozzle neck in TABLE
UW-12 : Seamless
●Joint efficiency of nozzle neck E : 1.0
●Corrosion allowance (designated by customer) C (mm) : 2.6
●Outside radius of nozzle neck Ro (mm) : 136.5
●Nominal thickness of the standard wall pipe(B36.10M) tstd (mm) : 9.27
●Inside radius of shell corroded Rs (mm) : 1402.6 (1) Minimum required thickness of nozzle neck for par. UG-45 (a)
0.385SE = 0.385× 125.3 ×1.00 = 48.2405 > P (a) under design condition Appendix 1-1 Required minimum thickness including allowance
mm
C
P
E
S
PR
t
d o2
.
6
3
.
31
65
.
0
4
.
0
1
3
.
125
5
.
136
65
.
0
4
.
0
1 min×
+
×
+
=
×
=
+
+
=
(b) under hydrostatic test condition
Required minimum thickness including allowance
mm
C
H
E
S
R
H
P
E
S
PR
t
t o t o22
.
3
6
.
2
06
.
0
56
.
0
6
.
2
)
10
/
1000
919
.
6
81
.
9
(
4
.
0
1
6
.
160
5
.
136
10
/
1000
919
.
6
81
.
9
65
.
0
4
.
0
1
6
.
160
5
.
136
65
.
0
)
10
/
81
.
9
(
4
.
0
)
10
/
81
.
9
(
4
.
0
6 6 6 6 2 min=
+
+
=
+
×
×
×
+
×
×
×
×
+
×
+
×
×
=
+
+
+
+
=
ρ
ρ
(2) Minimum required thickness of shell for par. UG-45 (b) (1),and UG-16 (b) (4), Es = 1.00
mm
5.1
6
.
2
2.5
33
.
9
6
.
2
73
.
6
6
.
2
65
.
0
6
.
0
1
136
6
.
1402
65
.
0
6
.
0
×
−
×
+
=
+
=
+
=
×
=
+
−
=
C
mm
>
P
E
S
PR
t
s s s st
s= 9.33 mm
(3) Minimum thickness of standard wall pipe including allowance for par. UG-45 (b) (4)
t
p=0.875t
std+ C = 0.875 × 9.27 + 2.6 = 10.7 mm
t
= (the smaller value of t
sor t
p) per UG-45(b)
= 9.33 mm. > t
min1,t
min2 (4) Provided thicknessNominal thickness (mm) 12.7
5-1-8 FOR NOZZLE S ASME SEC.Ⅷ DIV.1 UG-45
●Design pressure P (MPa) : 0.65
●Design temperature T (℃) : 300
●Material of nozzle neck : SA-106Gr.B
●Allowable stress of nozzle neck material at design
temperature Sd (MPa) : 125.3
●Allowable stress of nozzle neck material at test
temperature St (MPa) : 160.6
●Material of shell : SA-516MGr.485
● Allowable stress of shell (or head) at design
temperature Ss (MPa) : 136
●Height to point under consideration H (m) : 6.919
●Density of test medium at test temperature (water) ρ(kg/m3) : 1000 ●Type of welded joints of nozzle neck in TABLE
UW-12 : Seamless
●Joint efficiency of nozzle neck E : 1.0
●Corrosion allowance (designated by customer) C (mm) : 2.6
●Outside radius of nozzle neck Ro (mm) : 57.15
●Nominal thickness of the standard wall pipe(B36.10M) tstd (mm) : 6.02 ●Inside radius of shell corroded Rs (mm) : 1402.6 (1) Minimum required thickness of nozzle neck for par. UG-45 (a)
0.385SE = 0.385× 125.3 ×1.00 = 48.2405 > P (a) under design condition Appendix 1-1 Required minimum thickness including allowance
mm
C
P
E
S
PR
t
d o2
.
6
2
.
9
65
.
0
4
.
0
1
3
.
125
15
.
57
65
.
0
4
.
0
1 min×
+
×
+
=
×
=
+
+
=
(b) under hydrostatic test condition