Pipe Bend1
Transcript of Pipe Bend1
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ENMAS AHLSTROM LIMITED
PROJECT QUENA NEWPRINT PAPER COMPANY - EGYPT
NAME
DATE
PART FOR LEFT SIDE WALL LOWER SECTION REFER DRG. NO. 926112020
ASME SECTION I
CALCULATION FOR WALL THICKNESS OF THE TUBE DUE TO THE INTERNAL PRESSURE PG- 27.2.1
S.NO INPUT PARAMETERS
1 MAXIMUM ALLOWABLE WORKING PRESSURE PO 83 bar
2 HYDROSTATIC PRESSURE PH 0 bar
3 DESIGN PRESSURE P 83
4 MAXIMUM ALLOWABLE WORKING TEMPERATURE TO 298 Deg c
5 TEMPERATURE ALLOWANCE dT 0 Deg c
6 DESIGN TEMPERATURE T 298 Deg c
7 MATERIAL SA 210 GR A18 ALLOWABLE STRESS S 103.38 N/mm 2
9 OUTSIDE DIAMETER D 63.5 mm
10 WALL THICKNESS SN1 4.5 mm
11 UNDER TOLERANCE C1 0 mm
12 CORROSION ALLOWANCE C2 0 mm
13 FACTOR FOR EXPANDED TUBE ENDS e 0 mm
14 BENDING RADIUS R 117 mm
S.NO RESULT REFERENCE
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16 BO 0.898 TRD 301 ANNEX 2
17 WALL THICKNESS AT THE INTRADOS OF THE BEND SVI 3.24 mm TRD 301 ANNEX 2
18 BI 1.172 TRD 301 ANNEX 2
19 MAXIMUM ROUNDNESS MIN ( 20 * du / R) U 10.85 % TRD 301 SEE NOTE 2
NOTE
1 IN THE MODEL CALCULATION WHICH WAS SEND THROUGH YOU HAVE MENTIONED
Sn BUT YOU HAVE USED t PLEASE CLARIFY
2 FOR YOUR CALCULATION YOU HAVE TAKEN
r/Sv = SQRT(0.5 * (da/2Sv)^2+(R/Sv)^2+sqrt(0.25*((da/2Sv)^2+(R/Sv)^2)^2-da/2Sv*(da/2Sv -1)*(R/Sv)^2)
INSTEAD OF r/Sv = SQRT(0.5 * (da/2Sv) 2+(R/Sv)^2+sqrt(0.25*(da/2Sv)^2+(R/Sv)^2)-da/2Sv*(da/2Sv -1)*(R/Sv) 2)
PLEASE REFER TRD 301 ANNEX 2 PAGE NO 2 EQN. 8
3 AS PER THE DRAWING MAX OUT OF ROUNDNESS CALCULATION ASHOWN AS 200*(dumax - dumin)
(dumax + dumin)
BUT AS PER YOUR MODEL CALCULATION IT IS MIN ( 20 * du / R)WHAT IS THE SPECIFICATION FOR EQUATION --- 2
REFER YOUR DRAWING NO. 926112020 OUT OF ROUNDNESS IS MENTIONED AS
MAXIMUM OF 10 % , BUT AS PER OUR CALCULATION IT IS 13.37% PLEASE CONFORM WHICH ONE
TO BE FOLLOWED.
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PROJECT
NAME
DATE
PART FOR TUBES WHERE R/ DU < 1
ASME SECTION I
CALCULATION FOR WALL THICKNESS OF THE TUBE DUE TO THE INTERNAL PRESSURE PG- 27.2.1
S.NO INPUT PARAMETERS
1 MAXIMUM ALLOWABLE WORKING PRESSURE PO 100 bar
2 HYDROSTATIC PRESSURE PH 0 bar
3 DESIGN PRESSURE P 100
4 MAXIMUM ALLOWABLE WORKING TEMPERATURE TO 298 Deg c
5 TEMPERATURE ALLOWANCE Dt 0 Deg c
6 DESIGN TEMPERATURE T 298 Deg c
7 MATERIAL SA 210 GR A1
8 ALLOWABLE STRESS S 103.38 N/mm2
9 OUTSIDE DIAMETER D 63.5 mm
10 WALL THICKNESS SN1 6.35 mm
11 UNDER TOLERANCE C1 0 mm
12 CORROSION ALLOWANCE C2 1 mm
13 FACTOR FOR EXPANDED TUBE ENDS e 0 mm
14 BENDING RADIUS R 95 mm
S.NO RESULT REFERENCE
1 MINIMUM WALL THICKNESS WITHOUT ALLOWANCES T 3.25 mm PG 27.2.1
2 CHOSEN WALL THICKNESS WITHOUT ALLOWANCES SN 6.35 mm
3 MINIMUM WALL + CORROSION ALLOWANCE T + C2 4.25 mm
4 CHOSEN WALL WIHTOUT UNDERTOLERANCE SN + C2 7.35 mm
5 EXCESS WALL THICKNESS SN - T 3.104 mm
6 MAXIMUM PRESSURE PMAX 217.13 bar PG 27.2.17 MINIMUM ALLOWABLE STRESS SMIN 47.61 N/mm PG 27.2.1
8 INSIDE DIAMETER ( CHOSEN NOMINAL WALL) di 50.8 mm
9 INSIDE DIAMETER ( CHOSEN WALL WITHOUT ALLOWANCE ) di 50.8 mm
10 D/2T 9 78
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ENMAS AHLSTROM LIMITED
PROJECT QUENA NEWPRINT PAPER COMPANY - EGYPT
PART FOR MAIN DOWNCOMER DRG. NO. 926151011
ASME SECTION I
CALCULATION FOR WALL THICKNESS OF THE TUBE DUE TO THE INTERNAL PRESSURE PG- 27.2.1
S.NO INPUT PARAMETERS
1 MAXIMUM ALLOWABLE WORKING PRESSURE PO 83 bar2 HYDROSTATIC PRESSURE PH 0 bar
3 DESIGN PRESSURE P 83 bar
4 MAXIMUM ALLOWABLE WORKING TEMPERATURE TO 298 Deg c
5 TEMPERATURE ALLOWANCE Dt 0 Deg c
6 DESIGN TEMPERATURE T 298 Deg c
7 MATERIAL SA 106 GR B
8 ALLOWABLE STRESS S 103.38 N/mm2
9 OUTSIDE DIAMETER D 114.3 mm
10 WALL THICKNESS SN1 8.56 mm
11 EFFICIENCY E 1 mm PG 27.4 NOTE 1
12 CORROSION ALLOWANCE C2 1 mm
13 UNDER TOLERANCE C1 1.07 mm
13 TEMPERATURE COEFFICIENT Y 0.4 mm PG 27.4 NOTE 6
14 BENDING RADIUS R 400 mm
S.NO RESULT REFERENCE
1 MINIMUM WALL THICKNESS WITHOUT ALLOWANCES t 4.44 mm PG 27.2.2
2 UNDER TOLERANCE FOR MINIMUM THICKNESS (t * 0.125) t1 0.56 mm
3 CHOSEN WALL THICKNESS WITHOUT ALLOWANCES SN 8.56 mm
4 MINIMUM WALL + CORROSION ALLOWANCE t + C2 5.44 mm
5 CHOSEN WALL WITH UNDERTOLERANCE SN - C2 7.49 mm
6 EXCESS WALL THICKNESS SN - t 4.116 mm
7 MAXIMUM PRESSURE PMAX 123.03 bar PG 27.2.2
8 MINIMUM ALLOWABLE STRESS SMIN 59.40 N/mm PG 27.2.2
9 INSIDE DIAMETER ( CHOSEN NOMINAL WALL) d 99.32 mm
10 INSIDE DIAMETER ( CHOSEN WALL WITHOUT ALLOWANCE ) d 99.32 mm
11 da/2Sn 12.86
12 R/Sn 90.01
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23 RESULT SATISFACTORY
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PROJECT : QUENA NEWSPRINT PAPERS LIMITED - EGYPT
SUB : PIPE THICKNESS AT EXTRADOS AND INTRADOS OF THE BEND
151.01 MAIN DOWNCOMER
151.03 SIDE WALL SUPPLIERS
151.04 SIDE WALL RISERS
151.05 EXTENDED SIDE WALL DOWNCOMER
151.06 FRONT/REAR WALL RISER
151.07 B.BANK DOWNCOMER
151.08 B.BANK RISER
153.01 STEAM PPG - DRUM TO SH
153.02 SUPER HEATER INTERCONNECTING153.02 SUPER HEATER INTERCONNECTING
153.03 ST . PPG SH III M.O.H.
153.04 MAIN OUTLET HEADER
153.05 ST PPG DRUM - SWR
TEMP
PIPE
THK.
PROV.
(B)
PIPE
THK.WITH
NEG - TOL (B
* 0.875)
S.NO DESCRIPTION
PIPE
SIZE
(A)
BENDING
RADIUS
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NOTE 1
NOTE 1
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NOTE 1NOTE 1
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MIN THK.
REQ (t)REMARKS
UNDER
TOLERANC
FOR MIN
THK.
(t*0.125)
CORR.
ALLOW.
THK AT
EXTRADOS
THK AT
INTRADOS
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PROJECT : QUENA NEWSPRINT PAPERS LIMITED - EGYPT
SUB : PIPE THICKNESS AT EXTRADOS AND INTRADOS OF THE BEND
151.01 MAIN DOWNCOMER 323.9 1200 298 17.48 15.30 12.59 1.57 1 15.16 16.13 OKAY151.03 SIDE WALL SUPPLIERS 114.3 400 298 8.56 7.49 4.44 0.56 1 6.00 6.35 OKAY
151.04 SIDE WALL RISERS 139.7 500 298 9.53 8.34 5.43 0.68 1 7.11 7.53 OKAY
151.05 EXTENDED SIDE WALL DOWNCOMER 114.3 400 298 8.56 7.49 4.44 0.56 1 6.00 6.35 OKAY
151.06 FRONT/REAR WALL RISER 139.7 500 298 9.53 8.34 5.43 0.68 1 7.11 7.53 OKAY
151.07 B.BANK DOWNCOMER 168.3 600 298 10.97 9.60 6.54 0.82 1 8.36 8.87 OKAY
151.08 B.BANK RISER 139.7 500 298 9.53 8.34 5.43 0.68 1 7.11 7.53 OKAY
153.01 STEAM PPG - DRUM TO SH 114.3 500 298 8.56 7.49 4.44 0.56 1 6.00 6.35 OKAY
153.02 SUPER HEATER INTERCONNECTING 219.1 800 420 12.7 11.11 8.76 1.10 1 10.86 11.54 OKAY
153.02 SUPER HEATER INTERCONNECTING 168.3 600 420 10.97 9.60 6.73 0.84 1 8.57 9.10 OKAY
153.03 ST . PPG SH III M.O.H. 219.1 500 465 12.7 11.11 9.21 1.15 1 11.36 12.62 OKAY
153.04 MAIN OUTLET HEADER 219.1 1000 465 25.4 22.23 11.48 1.44 1 13.92 14.74 OKAY
153.05 ST PPG DRUM - SWR 88.9 300 298 7.62 6.67 3.46 0.43 1 4.89 5.16 OKAY
CORR.
ALLOW.
THK AT
EXTRADOS
THK AT
INTRADOSREMARKS
PIPE
SIZE
(A)
DESCRIPTIONS.NO
UNDER
TOLERANC
FOR MIN
THK.
(t*0.125)
BENDING
RADIUSTEMP
PIPE
THK.
PROV.
(B)
PIPE
THK.WITH
NEG - TOL (B
* 0.875)
MIN THK.
REQ (t)
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NOTE 1NOTE 1
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