8/13/2019 Flange Calculation Sheet..

1/2

Design: Worst ConditionDesign pressure,P (MPa) 22.6726Design temperature (C) 70.00

Flange material ASTM A694 F65 Design temp Sfo 151.43 Design temp Sb 159Corrosion allowance , c.a.(mm) 1.00 Atm . temp. Sfa 151.43 Atm . temp. Sa 159Bolt size (inch) 3.00Bolt n 16 206200Bolt material ASTM A193 B7 206200Bolt yield Sybolt (MPa) 655.00Overlay thickness, w.o. (mm) 0

Design pressure,Pd (MPa) 16.00GEOMETRY Bending moment, M (N mm) 225000000.00Pipe OD (mm) 514.40 Axial Force, F (N) 248000.00A (mm) 984.20 h (mm) 139.35B (mm), including c.a. 479.40 go (mm) 17.50R (mm) 95.25 Root bolt diameter (mm ) 72.10C (mm) 831.80 Number of bolts 16.00t (mm) 177.80 g (mm) 673.10D (mm) 641.30 r minimum (mm) 19.99G (mm) 584.20 slope () 24.48g1 (mm) 80.95 E (mm) 76.20hG (mm) 123.80 L (mm) 17.50

Gasket RJw (mm) 31.75 Wm2=b. .G.y (N) 1311106 Am = greater of b0=w/8=b (mm) 3.96875 Hp=2.b. .G.m.P (N) 2146887 Wm2/Sa or Wm1/Sb (mmG (mm) 584.20 H=G. .P/4 (N) 6077340 Ab (mm2 ) 65325y (MPa) 180 Wm1= Hp + H (N) 8224227 W = (Am+Ab)Sa/2 9305451m 6.5

MOMENT CALCULATIONOperating

HD = .B.P/4 (N) 4092480 hD = R + 0.5*g1 (mm) 135.725 MD = HD*hD (N mm) 555451785HG = Wm1 H (N) 2146887 hG =0.5*(CG) (mm) 123.8 MG = HG*hG (N mm) 265784555HT = H HD (N) 1984861 hT = 0.5*(R +g1+hG) (mm) 150 MT = HT*hT (N mm) 297729130

19.22% Mo (N mm) 1118965470

SeatingHG = W (N) 9305451 hG =0.5*(CG) (mm) 123.80 Mo' (N mm) 1152014831

21.75%

HUB AND STRESS FORMULA FACTORS

K = A/B 2.05 Xh = h/ho 1.52

T 1.16 F 0.571Z 1.62 V 0.028Y 2.86 f 1.0U 3.14 e = F / ho 0.006230

Xg = g1/go 4.63 L = (t*e+1)/T+t 3/d 3.60ho = SQR( B.go) 91.59 d =( U / V ). ho.go 3157783.755

CNG TY C PH N DCH V C KH HNG HI - PTSC M&C - PHNG THIT K - T PIPELINE

WELD NECK FLANGE RTJ 20"#1500 w.t. 17.5 mm: DESIGN IN ACCORDANCE WITH ASME VIII DIV.1 APP.2

ALLOWABLE STRESSES (MPa)

Bolt utilization factor = (W/Ab)/Sy

Flange

Flange modulus of elasticity at design temp Eo (MPa)Flange modulus of elasticity at atm. temp Ea (MPa)

Bolting

The following equation is used to determine the equivalent pressure due to the externalloads and hydrostatic pressure: P = 16.M/.G3+4.F/.G2+Pd

REQUIRED BOLTS AREA51725

Bolt utilization factor = (Wm1/Ab)/Sy

PTSC MECHANICAL & CONSTRUCTION - ENGINEERING DEPARTMENT - PIPELINE TEAM

Special Flange Calculation Guide - L i Minh Th 1 of 2

8/13/2019 Flange Calculation Sheet..

2/2

CNG TY C PH N DCH V C KH HNG HI - PTSC M&C - PHNG THIT K - T PIPELINE

PTSC MECHANICAL & CONSTRUCTION - ENGINEERING DEPARTMENT - PIPELINE TEAM

Allowable Stress (MPa) Formula Actual Stress (MPa) Allowable Stress (MPa) Formula Actual Stress (MPa)( 1,5 . Sfo ) Longitudinal hub (1,5 . Sfa ) Longitudinal hub

227.145 SH=f Mo / L.g1.B 98.89 227.145 SH=f Mo' / L.g1.B 101.81( Sfo ) Radial flange (Sfa ) Radial flange151.43 SR =(1.33t.e+1)Mo/L.t.B 50.70 151.43 SR =(1.33t.e+1)Mo'/L.t.B 52.20( Sfo ) Tangential flange (Sfa ) Tangential flange151.43 ST=Y.Mo/ t.B Z.SR 128.81 151.43 ST=Y.Mo'/ t.B Z.SR 132.61( Sfo ) greater of .5(SH+SR) (Sfa ) greater of .5(SH+SR)151.43 or .5(SH+ST) 113.8 151.43 or .5(SH+ST) 117.21

Formula Actual Stress (MPa) UF Formula Actual Stress (MPa) UFLongitudinal hub Longitudinal hubSH=f Mo / L.g1.B 98.89 44% SH=f Mo' / L.g1.B 101.81 45%

Radial flange Radial flangeSR =(1.33t.e+1)Mo/L.t.B 50.70 33% SR =(1.33t.e+1)Mo'/L.t.B 52.20 34%

Tangential flange Tangential flangeST=Y.Mo/ t.B Z.SR 128.81 85% ST=Y.Mo'/ t.B Z.SR 132.61 88%greater of .5(SH+SR) greater of .5(SH+SR)

or .5(SH+ST) 113.8 75% or .5(SH+ST) 117.21 77%

Formula Rigidity J Criterion Formula Rigidity J CriterionRigidity Rigidity

J=52.14 V Mo / L.Eo.go.KI.ho 0.26