Home
Add Document
Sign In
Register
Wall Thickness Calculation - ASME B31.8 2007 (Template)
Home
Wall Thickness Calculation - ASME B31.8 2007 (Template)
Wall Thickness Calculation...
Author:
Hendra Yudistira
43 downloads
563 Views
64KB Size
Report
DOWNLOAD .PDF
Recommend Documents
Wall Thickness Calculation - ASME B31.8 2007 (Template)
Full description
Wall Thickness Calculation - ASME B31.8 2007 (Template)
Pipes. Wall Thickness Calculation According ASME B31.3
Descripción: ASME B31.3
Pipe Wall Thickness Calculation
pipe thickness
Pipe Wall Thickness Calculation
pipe wall thickness calculationFull description
Pipe Wall Thickness Calculation ASME B31.8
Pipe wall thickness calculation based on ASME B31.8Deskripsi lengkap
Pipe Wall Thickness Calculation
Wall thickness calculation based on ASME B31 Code.Description complète
Pipe Wall Thickness Calculation
Wall thickness calculation based on ASME B31 Code.
Asme-dished Head Thickness Calculation
-
Pipe Wall Thickness Calculation According ASME B31 3
Wall Thickness Calculation of Offshore Pipelines
Wall thickness calc ulation offshore pipelineFull description
Retiring Wall Thickness Calculation for Pipe
Pipe wall thickness calc
ASME Ultrasonic Thickness Procedure
ASME Ultrasonic Thickness Procedure
Blind Flange Thickness Calculation
blindFull description
Thickness Calculation for Pipe
Full description
IBR Thickness Calculation
fdffgf
Wall Thickness Pipeline (Gas) B31
Pipe Wall Thickness CalASME B31
Pipe Wall Thickness CalASME B31
Calculation Curtain Wall
calculation for wallFull description
Calculation Example Wall Formwork3
formwork
Wall Calculation Example EC2
Calculation Curtain Wall 20140828
Descripción: c
101109 Retaining Wall Calculation
Full description
ATTACHMENT ATTACHMENT - X Document No. X Wall Thickness Calculation of 36in Gas Pipeline (Location Class-3, D.F.=0.5, Corr. Allow.=1.5mm) 1 2
DESIGN INPUT
3
Desi gn Code
4
Pipeli ne Size / Nominal O.D
D
ASME B31.8 36
in
5
Corrosion Al lowance
A
1.5
mm
6
Location Cl ass
7
Desi gn Factor
F
0.5
9
Stee Steell Coe Coeff ffic icie ient nt of Expa Expan nsion sion,,
α
0.0000117
per de deg C 6.50E-06
10
Modulus lus of of Ela Elast stic icit ity y
E
2.07E+05
Mpa
3.05E+07 Psi
bar g C
921.0 149.0
914
mm
3
8 o
in/in/ C
11 12
Pres Pressu sure re and and Temp Temper erat atur ure e Data Data
13 14
Desi gn Pressure Desig Design n Temp Temper erat atur ure e (Und (Under ergr grou ound nd))
P Td
63.5 65
15
Inst Instal alla lati tion on (bac (backf kfill ill)) Temp Temp
Ti
13
16
W eld j oint factor
E
1
17
Temperature Derating Factor
T
1
C
55.4
psi g F F
18 19
A. WALL THICKNESS
20
Grade
21 22
S tmin
23
SMYS of Li ne Pipe Wall Wall Thic Thickn knes ess s Calc Calcu ulate lated d tmin = P x D / (2x Sx Fx E x T) + A
24
Next higher API wall thickness
t
25
D/t D/t Chec Check k ( Shou Should ld be < 96) 96)
X60 60200
psi
15.5
mm
415 415 MPa 0.61 0.610 0 inch inch
15.9
mm
0.62 0.626 6 inch inch
58
26 27
B. EQUIVALENT STRESS STRESS CHECK FOR CORRODED PIPE CONDITION CONDITION
28
Wall thickness (t)
14.4
mm
29
Hoop Stress = S h = PD/2t
201.6
MPa
-125.9
MPa
60.5
MPa
-65.5
MPa
30 31
B.1 Restrained Pipe (Underground) (Underground)
32
Thermal Stress = ST = a (T i - Td) E
33
Longitudinal Longitudinal Stress due to pressure = S P = 0.3 S h
34 35
Longitudinal Longitudinal Stress, SL
36
SL = SP + ST + SB + SX
≤
0.9 x SMYS = 374 MPa
37 38
Without considering S B (Bending stress) and S X (Axial stress due to external loading):
39 40
SL = SP + ST Longitudinal Stress check :
SL
hence
≤ 0.9 x SMYS
OK
41 42
Equivalent Stress, SE
43
SE1 = | Sh - SL |
44 45
SE2 = [ Sh + SL - Sh SL ] SE = Max (SE1, SE2)
46
Equivalent Stress check :
2
2
1/2
≤
0.9 x SMYS = 374 MPa
SE
SE1
267.1
MPa
SE2 SE
241.1 267.1
MPa
≤ 0.9 x SMYS
hence
MPa
OK
47 48 49
B.2 Unrestrained Pipe (Aboveground) Longitudinal Longitudinal Stress due to pressure = S P = 0.5 S h
100.8
MPa
100.8
MPa
50 51
Longitudinal Longitudinal Stress, SL
52
SL = SP +SB + SX
53 54
Without considering S B (Bending stress) and S X (Axial stress due to external loading): SL = SP
55
Longitudinal Stress check :
≤
0.75 x SMYS = 312 MPa
SL
≤ 0.75 x SMYS
hence
OK
56 57
C. MINIMUM BENDING RADIUS
58
Minimum bending radius for underground section is calculated from maximum margin of bending stress,
59 60
based on Max (S E1, SE2) = 0.9 x SMYS. Hence, bending stress S B = R (Minimum Bend Radius) = E D / (2 |S b|)
-106 -106.5 .5 MPa MPa 889 m
61 62
D. CHECK ON THINNING DUE TO COLD BENDS: BEND RADIUS = 40 D
63
Inner bend radi us divi ded by diameter, (n)
39.5
64
As per per PD 8010 8010-1 -1:2 :200 004, 4, % of Wall Wall thin thinn ning ing = 50 / (n+1 (n+1))
65
Pipe thk. thk. befo before re ben bendin ding g = cal cal thk/( thk/(1-t 1-thin hinnin ning g %)
1.23 1.23 15.7
% mm
66
Availab Available le thic thickn kness ess for bendin bending g (= Select Selected ed thk thk))
15.9
mm
67
Adequ Adequacy acy Che Check ck (Pipe (Pipe thk thk befo before re ben bendin ding g < Availab Available le thk) thk)
OK
68
×
Report "Wall Thickness Calculation - ASME B31.8 2007 (Template)"
Your name
Email
Reason
-Select Reason-
Pornographic
Defamatory
Illegal/Unlawful
Spam
Other Terms Of Service Violation
File a copyright complaint
Description
×
Sign In
Email
Password
Remember me
Forgot password?
Sign In
Our partners will collect data and use cookies for ad personalization and measurement.
Learn how we and our ad partner Google, collect and use data
.
Agree & close