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7/28/2019 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



1 MAXIMUM ALLOWABLE WORKING PRESSURE PO 100 bar

2 HYDROSTATIC PRESSURE PH 0 bar

3 DESIGN PRESSURE P 100


5 TEMPERATURE ALLOWANCE Dt 0 Deg c


7 MATERIAL SA 210 GR A1

8 ALLOWABLE STRESS S 103.38 N/mm2



11 UNDER TOLERANCE C1 0 mm


13 FACTOR FOR EXPANDED TUBE ENDS e 0 mm



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



1 MAXIMUM ALLOWABLE WORKING PRESSURE PO 83 bar2 HYDROSTATIC PRESSURE PH 0 bar

3 DESIGN PRESSURE P 83 bar


5 TEMPERATURE ALLOWANCE Dt 0 Deg c


7 MATERIAL SA 106 GR B

8 ALLOWABLE STRESS S 103.38 N/mm2



11 EFFICIENCY E 1 mm PG 27.4 NOTE 1


13 UNDER TOLERANCE C1 1.07 mm

13 TEMPERATURE COEFFICIENT Y 0.4 mm PG 27.4 NOTE 6



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

NOTE 1

NOTE 1

NOTE 1

NOTE 1

NOTE 1

NOTE 1

NOTE 1NOTE 1

NOTE 1

NOTE 1

NOTE 1

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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