CALCULATIONS AND SKETCHES JOB NO. S outhern R egion
H ouston, T exas
BY
DATE:
CHKD.
DATE:
PAGE
REV.
Atofina, Beaumont Beaumont,, Texas Sulfox Trunnion loads on base ell at node 425. Ceasar calculation 25-007 8" Sch 40s elbow with type 7 trunnion. TRUNNION OR OTHER CYLINDRICAL ATTACHMENTS TO PIPE
CLIENT AND LOCATION UNIT ITEM
Longitudinal Bending
Circumferential Bending
Axial Load
SUSTAINED INPUT Header Pipe: Outside Diameter D (in.) Wall Thickness (in.) Corrosion Allowance (in.)
8.625 0.322 0
Reinforcing Pad: Reinforcing Pad thi ckness (in.) Note 3 Note 4
W all Thickness + Pad Thk - Corrosion
t
(in.)
0 0.322
Trunnion: Outside Diameter
(in.)
6.625
Wall Thickness (in.) Length of Trunnion L (in.) Weld Size (in)
0.28 22.4 0.148
d
Notes: .
0
1. All stress values below are given in lbs/in 2. Al l load values bel ow are given i n l bs. 3. If l ine is existing, check agai nst actual wal l thi ckness as reported by pl ant inspection. 4. If line is existing, use corrosion allowance allowance as reported reported by plant inspection, or use original corrosion allowance as reported in original pipe speci fi cati on, whichever is greater.
0
5. Length of trunnion determined from outsi de wal l of run pipe to
Note 5
Applied Loads (lbs) and Moments (in-lbs): Longitudinal Moment
M L
(in - lbs)
Circumfrential Moment
M c
(in - lbs)
Axial Force on Trunnion Trunnion W (lbs) Design Pressure P (psi) Design Temperature (°F)
2525 64 200
to contact wi th grade or centerline of support beam.
Allowable Stresses: Hot Allowable Stress (psi) Cold Allowable Stress (psi)
16700 16700 EQUATIONS
Longitudinal
f L
S L
Circumfrential
M L ( / 4 ) d
1.17 f ( D / 2) P ( D / 2) 1.5
t
f c
2
2t
S c
Axial
M c ( / 4) d
1.17 f ( D / 2) t 1.5
f a
2
P ( D / 2) t
S A
W 2 ( d / 2 )
1.17 f ( D/ 2) P ( D/ 2) t 1.5
t
Rev.6
SUSTAINED CALCULATIONS NOTE: IF ANY FAILURES RESULT BELOW, THE PIPING LOADS MUST BE ADJUSTED AND THEN RE-CALCULATED Longitudinal Evalvuation f L =
Sustained Load Case (ML)
0
Note 2 (typ) SL =
Sustained Load Case (ML+W) Localized Load f 1 = f L + 1.5f a
f 1 =
429
<
1.5 Sh =
25,050
2,848
<
1.5 Sh =
25,050
PASS
Note 1 (typ)
PASS
182 SL2 =
Note: Expansion Load case gives the same result as Sustained Case. No evaluation is necessary. Circumferential Evaluation Sustained Load Case (Mc) Localized Load f 2 = 1.5(f cs)
f cs =
0
f 2s =
0
Sc2s =
857
<
1.5 Sh =
25,050
PASS
Sc2Ma =
3,277
<
1.5 Sh =
25,050
PASS
Sc3s =
3,277
<
1.5Sh =
25,050
PASS
Sas =
2,470
<
1.5Sh =
25,050
PASS
Sustained Load Case (Mc+W) Localized Load f 2 =1.5( fc + f a)
f 2Ma =
182
Combined Resultant Load Evaluation
f r
2 2 f L f C
fr =
0
Sustained Loading (ML+Mc+W) Localized Load f 3s =1.5(fr + f a)
f 3s =
182
Axial Evaluation f a =
Sustained Loading (W)
121
Global Stress Evaluation Bending Stress in Trunnion
Bending Stress f s =
2 2 f s f L f c
0
S b
f s
L
Sb =
0
f F =
121
Sw =
55.71
< Sh =
16,700
PASS
13,360
PASS
Z t
Trunnion Section Modulus
Z t
Weld Resulant Force
D4 d 4 32 D
Zt =
8.5
2 2 2 f f F f L c f a
Weld Shear Stress Shear Stress in Fillet Weld S W
Weld Area (in )
2
f F A W
< Ssa =
Rev.6
CALCULATIONS AND SKETCHES
Southern R egion
Houston, Texas
JOB NO.
0
BY
0
1/0/1900
DATE:
CHKD.
DATE:
PAGE
REV.
Atofina, Beaumont, Texas
CLIENT AND LOCATION UNIT
Sulfox
ITEM
Trunnion loads on base ell at node 425. Ceasar calculation 25-007 8" Sch 40s elbow with type 7 trunnion. TRUNNION OR OTHER CYLINDRICAL ATTACHMENTS TO PIPE
Longitudinal Bending
Circumferential Bending
Axial Load
EXPANSION INPUT Header Pipe:
Reinforcing Pad: Outside Diameter
D
(in.)
Wall Thickness (in.)
8.625 0.322
Reinforcing Pad thickness (in.)
0
Note 3 Wall Thickness + Pad Thk
t
(in.)
0.322
Trunnion: Outside Diameter
(in.)
6.625
Wall Thickness (in.) Length of Trunnion L (in.)
0.28 22.4 0.148
d
Weld Size (in)
Notes: .
1. All stress values below are given in lbs/in 2. All load values below are given in lbs. 3. If line is existing, check against actual wall thickness as reported by plant inspection. 4. If line is existing, use corrosion allowance as reported by plant inspection, or use original corrosion allowance as
Note 5
Applied Loads (lbs) and Moments (in-lbs): Longitudinal Moment
M L
(in - lbs)
16970
reported in original pipe specification, whichever is greater.
Circumfrential Moment
M c
(in - lbs)
16970
5. Length of trunnion determined from outside wall of run pipe to
Axial Force on Trunnion Design Pressure
W P
(lbs) (psi)
Design Temperature (°F)
340 64 200
to contact with grade or centerline of support beam.
Allowable Stresses: Hot Allowable Stress (psi) Cold Allowable Stress (psi)
16700 16700 EQUATIONS
Longitudinal
f L S L
Circumfrential
M L
f c
( / 4 ) d 2
1.17 f ( D / 2) P ( D / 2) t 1.5
Axial
2t
S c
M c
f a
( / 4 ) d 2
1.17 f ( D / 2) 1.5
t
P ( D / 2) t
S A
W 2 ( d / 2 )
1.17 f ( D/ 2) P ( D/ 2)
t 1.5
t
Rev.6
EXPANSION CALCULATIONS NOTE: IF ANY FAILURES RESULT BELOW, THE PIPING LOADS MUST BE ADJUSTED AND THEN RE-CALCULATED Longitudinal Evalvuation f L =
Expansion Load Case (ML)
492 SL =
6,975
<
1.5 Sh =
25,050
Note 1 (typ)
PASS
SL2 =
7,301
<
1.5 Sh =
25,050
PASS
ScE =
7,403
<
1.5 Sh =
25,050
PASS
Sc2E =
7,729
<
1.5 Sh =
25,050
PASS
Sc3E =
10,441
<
1.5Sh =
25,050
PASS
Sa =
1,074
<
1.5Sh =
25,050
PASS
Expansion Load Case (ML+W) f 1 =
Localized Load f 1 = f L + 1.5f a
517
Note 2 (typ)
Note: Expansion Load case gives the same result as Sustained Case. Circumferential Evaluation f cE =
Expansion Load Case (Mc)
492
Localized Load fcE = fc
Expansion Load Case (Mc+W) Localized Load f 2E = fc + 1.5f a
f 2E =
517
Combined Resultant Load Evaluation
f r
2 2 fr = f L f C
696
Expansion Load Case (ML+Mc+W) Localized Load f 3E =fr + 1.5f a
f 3E =
721
Axial Evaluation f a =
16
Global Stress Evaluation Bending Stress in Trunnion
Bending Stress
2 2 f s f L f c
f s =
696
Trunnion Section Modulus Z = D4 d 4 Z t 32 D Shear Stress in Fillet Weld
Weld Area (in )
t
2
S b
f s
Weld Resulant Force 8.5
LS
b
=
1,836
< Sh =
16,700
PASS
13,360
PASS
Z t f F =
696
Sw =
319.77
2 2 2 f f F f L c f a
Weld Shear Stress
S W
f F A
< Ssa =
W
Rev.6
