Calculation of Trunnion (KELLOGG's Method)
Input Data
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9952T
8"-P-510-0148-B5A-N
510-CN-1119/2010
Project N° :
Line N° :
NC/Node :
Material
Header
Outside Diameter (mm) :
Thickness of pipe (mm) :
Thickness of pad (mm) :
219,08
8,1788
0
Sh : Allowable Stress at Hot Temperature (Mpa) :
Sc : Allowable Stress at Room Temperature (Mpa):
Corrosion Allowance (mm) :
Mill Tolerance ( % ) :
Trunnion
Outside Diameter (mm) :
Thickness of pipe (mm) :
Effective length (mm) :
137,9
137,9
1,5
12,5
Design Conditions
168,28
7,112
615
Design Temperature(°C):
Design Pressure (Kg/cm2g):
Upset Pressure (Kg/cm2g):
80
22,5
0
Test Pressure
33,75
(Kg/cm2g):
Loading in N
FA
FC
FL
Case
FC
FL
FA
Weight + Pressure
Weight + Design Pressure+ Thermal ( Operating )
Weight + Upset Pressure + Thermal ( Upset )
Weight + Design Pressure + Impact ( Occasional )
Weight + Test Pressure (Test condition)
96
109
282
1511
0
0
6402
5036
0
0
7340
0
0
124
STRESSES RESULTS
HEADER STRESSES (Mpa)
Case
Longitudinal
W+P
N/A
W+P+T (Ope)
Passed
W+P+T (Upset)
Passed
W+P+Impact Load(Occ) Passed
W+P (Test)
N/A
TRUNNION STRESSES (Mpa)
Circumferential
Case
W+P
W+P+T (Ope)
W+P+T (Upset)
W+P+Impact Load(Occ)
W +P (Test)
Passed
Passed
N/A
N/A
Passed
HEADER STRESSES (Mpa)
Case
Longitudinal
W+P
N/A
W+P+T (Ope)
72,83
W+P+T (Upset)
21,79
W+P+Impact Load(Occ) 21,79
W+P (Test)
N/A
TRUNNION STRESSES (Mpa)
Circumfer1 Circumfer2
N/A
59,32
N/A
N/A
N/A
Equivalent Stress
Passed
Passed
N/A
N/A
Passed
71,4
N/A
N/A
N/A
96,9
Allowable
137,9
206,9
206,9
183,4
137,9
Case
W+P
W+P+T (Ope)
W+P+T (Upset)
W+P+Impact Load(Occ)
W+P (Test)
Trunnion Check_Node 710
Equivalent Stress
1,49
7,59
0,00
0,00
1,67
309
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CALCULATION SHEET FOR TRUNNIONS
9952T
8"-P-510-0148-B5A-N
Project N° :
Line N° :
NC/Node :
510-CN-1119/2010
Design Temperature (°C)
Design pressure (barg )
Upset pressure ( Barg ) ( if required )
33,75 Test pressure ( Barg )
Material
137,9 Allowable Stress at Metal Temp (Mpa)
137,9 Allowable Stress at Room Temp (Mpa)
1,5 Corrosion allowance ( mm )
12,5 Mill tolerance ( % )
Header
219,075 Outside diameter (mm)
8,1788 Thickness of pipe+pad (mm)
Trunnion
168,275 Outside diameter ( mm )
7,112 Thickness ( mm )
615 Effective lenght ( mm )
Loads in N
80
22,5
0
Circumferential
Longitudinal
loading
loading
==>Upset pressure in Barg
==>Thickness included (mm)
==>Thickness included ( mm )
Radial
Loading
96
282
6402
109
1511
5036
0
0
0
0
0
0
124
309
7340
Weight + Design Pressure
Weight+Design Pressure+Thermal (Normal)
Weight+Upset Pressure+Thermal (Upset)
Weight+Design Pressure+Impact Load (Occasional)
Weight +Test Pressure ( Test condition )
Trunnion Check_Node 710
22,5
5,65645
6,223
3/8
STRESS CALCULATION
Header stresses ( Weight+Pressure )
59040,00
173430,00
6402,00
2,65
7,80
12,11
Circumferential Moment Mc ( Nmm )
Longitudinal Moment Ml ( Nmm )
Radial Load ( N )
fc Circumferential force ( N/mm )
fl Longitudinal force ( N/mm )
fa Axial force ( N/mm )
Condition fl/fc
2 If 0.5=< fl/fc =< 3 then apply condition 2
Else apply condition 1
2,94
Condition 1
N/A
N/A
f1 Longitudinal Bending ( N/mm )
f2 Circumferential Bending ( N/mm )
N/A
N/A
Sext Longitudinal Bending Stress ( Mpa )
Spl Longitudinal Pressure Stress ( Mpa)
Ssum = Sext + Spl ( Mpa )
< SH =
137,90 Mpa
Sext Circumferential Bending Stress ( Mpa )
Spc Circumferential Pressure Stress ( Mpa )
Ssum = Sext + Spc ( Mpa )
< SH =
137,90 Mpa
< SH =
137,90 Mpa
N/A
N/A
N/A
N/A
Condition 2
30,52
f2 Circumferential Bending ( N/mm )
27,78
43,57
Sext Circumferential Bending Stress ( Mpa )
Spc Circumferential Pressure Stress ( Mpa )
Ssum = Sext + Spc ( Mpa )
71,35
Trunnion Check_Node 710
4/8
Header stresses ( Th+W+P ) Normal
67035,00
929265,00
5036,00
3,01
41,78
9,53
Circumferential Moment Mc ( Nmm )
Longitudinal Moment Ml ( Nmm )
Radial Load ( N )
fc ( N/mm)
fl ( N/mm)
fa ( N/mm )
Condition fl/fc
1 If 0.5=< fl/fc =< 3 then apply condition 2
Else apply condition 1
13,86
Condition 1
56,07
17,30
f1 Longitudinal Bending ( N/mm )
f2 Circumferential Bending ( N/mm )
Sext Longitudinal Bending Stress ( Mpa )
Spl Longitudinal Pressure Stress ( Mpa)
72,83 Ssum = Sext + Spl ( Mpa )
<S=
206,85 Mpa
Sext Circumferential Bending Stress ( Mpa )
Spc Circumferential Pressure Stress ( Mpa )
59,32 Ssum = Sext + Spc ( Mpa )
<S=
206,85 Mpa
<S=
206,85 Mpa
51,04
21,79
15,75
43,57
Condition 2
N/A
f2 Circumferential Bending ( N/mm )
N/A
Sext Circumferential Bending Stress ( Mpa )
Spc Circumferential Pressure Stress ( Mpa )
Ssum = Sext + Spc ( Mpa )
N/A
N/A
Trunnion Check_Node 710
5/8
Header stresses ( Th+W+P ) Upset
0,00
0,00
0,00
Circumferential Moment Mc ( Nmm )
Longitudinal Moment Ml ( Nmm )
Radial Load ( N )
0,00
0,00
0,00
fc ( N/mm)
fl ( N/mm)
fa ( N/mm )
Condition fl/fc
1 If 0.5=< fl/fc =< 3 then apply condition 2
Else apply condition 1
10,00
Condition 1
0,00
0,00
f1 Longitudinal Bending ( N/mm )
f2 Circumferential Bending ( N/mm )
Sext Longitudinal Bending Stress ( Mpa )
Spl Longitudinal Pressure Stress ( Mpa)
21,79 Ssum = Sext + Spl ( Mpa )
0,00
21,79
N/A
N/A
N/A
Sext Circumferential Bending Stress ( Mpa )
Spc Circumferential Pressure Stress ( Mpa )
Ssum = Sext + Spc ( Mpa )
<S=
206,85 Mpa
<S=
206,85 Mpa
<S=
206,85 Mpa
Condition 2
N/A
f2 Circumferential Bending ( N/mm )
N/A
Sext Circumferential Bending Stress ( Mpa )
Spc Circumferential Pressure Stress ( Mpa )
Ssum = Sext + Spc ( Mpa )
N/A
N/A
Trunnion Check_Node 710
6/8
Header stresses ( Weight+Pressure+Impact Load )
0,00
0,00
0,00
Circumferential Moment Mc ( Nmm )
Longitudinal Moment Ml ( Nmm )
Radial Load ( N )
0,00
0,00
0,00
fc Circumferential force ( N/mm )
fl Longitudinal force ( N/mm )
fa Axial force ( N/mm )
Condition fl/fc
1 If 0.5=< fl/fc =< 3 then apply condition 2
Else apply condition 1
10,00
Condition 1
0,00
0,00
f1 Longitudinal Bending ( N/mm )
f2 Circumferential Bending ( N/mm )
0,00
21,79
Sext Longitudinal Bending Stress ( Mpa )
Spl Longitudinal Pressure Stress ( Mpa)
Ssum = Sext + Spl ( Mpa )
< SH =
183,41 Mpa
Sext Circumferential Bending Stress ( Mpa )
Spc Circumferential Pressure Stress ( Mpa )
Ssum = Sext + Spc ( Mpa )
< SH =
183,41 Mpa
< SH =
183,41 Mpa
21,79
0,00
N/A
N/A
Condition 2
N/A
f2 Circumferential Bending ( N/mm )
N/A
N/A
Sext Circumferential Bending Stress ( Mpa )
Spc Circumferential Pressure Stress ( Mpa )
Ssum = Sext + Spc ( Mpa )
N/A
Trunnion Check_Node 710
7/8
Header stresses ( Test condition )
76260,00
190035,00
7340,00
3,43
8,54
13,88
Circumferential Moment Mc ( Nmm )
Longitudinal Moment Ml ( Nmm )
Radial Load ( N )
fc ( N/mm)
fl ( N/mm)
fa ( N/mm )
Condition fl/fc
2 If 0.5=< fl/fc =< 3 then apply condition 2
Else apply condition 1
2,49
Condition 1
N/A
N/A
f1 Longitudinal Bending ( N/mm )
f2 Circumferential Bending ( N/mm )
N/A
N/A
Sext Longitudinal Bending Stress ( Mpa )
Spl Longitudinal Pressure Stress ( Mpa)
Ssum = Sext + Spl ( Mpa )
<S=
137,90 Mpa
Sext Circumferential Bending Stress ( Mpa )
Spc Circumferential Pressure Stress ( Mpa )
Ssum = Sext + Spc ( Mpa )
<S=
137,90 Mpa
<S=
137,90 Mpa
N/A
N/A
N/A
N/A
Condition 2
34,64
f2 Circumferential Bending ( N/mm )
Sext Circumferential Bending Stress ( Mpa )
Spc Circumferential Pressure Stress ( Mpa )
96,89 Ssum = Sext + Spc ( Mpa )
31,53
65,36
Trunnion Check_Node 710
8/8
Trunnion Stresses
Trunnion stresses ( Weight + pressure)
183203,95
10415085,42
3168,14
1,48
0,09
Bending moment ( Nmm )
I ( mm4 )
Section ( mm2)
Bending Stress ( Mpa )
Shear Stress ( Mpa )
1,49 Equivalent Stress (Mpa)
<S=
137,90 Mpa
<S=
206,85 Mpa
<S=
206,85 Mpa
Trunnion stresses ( W+Th+P ) Normal
931679,74
7,53
0,48
Bending moment ( Nmm )
Bending Stress ( Mpa )
Shear Stress ( Mpa )
7,59 Equivalent Stress (Mpa)
Trunnion stresses ( W+Th+P ) Upset
0,00
Bending moment ( Nmm )
0,00
0,00
Bending Stress ( Mpa )
Shear Stress ( Mpa )
0,00 Equivalent Stress (Mpa)
Trunnion stresses ( Weight + pressure+Impact Load)
0,00
10415085,42
3168,14
0,00
0,00
Bending moment ( Nmm )
I ( mm4 )
Section ( mm2)
Bending Stress ( Mpa )
Shear Stress ( Mpa )
0,00 Equivalent Stress (Mpa)
<S=
183,41 Mpa
< SC =
137,90 Mpa
Trunnion stresses ( Test condition )
204765,45
1,65
0,11
Bending moment ( Nmm )
Bending Stress ( Mpa )
Shear Stress ( Mpa )
1,67 Equivalent Stress (Mpa)
Trunnion Check_Node 710