Steam Drum Calulation

STEAM DRUM

STRESS CALCULATIONS

EQUIPMENT NAME

:

STEAM DRUM

QUANTITY

:

ONE

PROJECT

:

BIRLA CARBON BLACK Co., EGYPT

CONSTRUCTION CODE

:

ASME Section-I, 2004 Edition./ADDENDA 2006.

ASME 'S' STAMP

:

YES "S" STAMP

MANUFACTURER'S NAME

:

ENMAS GB POWER SYSTEMS

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

EQPT.

MFR'S SERIAL NO.

STEAM DRUM

GBE/1750/009

STATUS OF CALCULATION DUE TO REVISION IN DRAWING

Page of Calculation

Reason For Revision

00

-

-

-

10-10-01-3062

00

-

-

-

3

10-10-01-3063

00

-

-

-

4

10-10-01-3064

00

-

-

-

5

10-10-01-3065

00

-

-

-

6

30-10-01-3023

00

-

-

-

Sl. No.

Drawing No.

1

10-10-01-3061

2

Rev.

Pages Affected

Prep.

Appr.

IA

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

STEAM DRUM

EQPT :

Sheet

03

Rev.

00

Mfr's Serial No :GBE/1750/009

INDEX S.No.

DESCRIPTION

SHEET Nos.

01 Cover Sheet

01

02 Revision status - Drawing

02

03 Index

03

04 Revision status - Stress calculation

04

05 List of drawings

05

06 List of standards/codes

06

07 Design data

07

08 Material constructions

08

09 Allowable stress

09

10 Hydrostatic test pressure

10

11 Radiographic Examinations

11

12 Heat treatment & Post weld heat treatment

12

13 Shell Thickness calculation

13

14 dished head thickness calculation

14

15 Manhole ring thickness calculations

15

16 Manhole door thickness calculations

16

17 Nozzle (Stubs) thickness calculations

17 - 31

18 openings in shell and dished head

32

19 List of openings

33

20 Compensation calculations for openings in shell & dished head

34 - 43

21 Requirements of attachment welds

44 - 56

22 Weld strength calculations

57 - 67

23 Hydrostatic test Endcover thickness calculations

68 - 76

24 Calculation of Minimum Required thickness for the stub End Plate

77

25 Calculation of stress during Hydrostatic test for Stub End Plate

78

26 Static Head Calculation

79

27 Weight & Loading Calculation

80 & 81

28 External Loading calculation

82

29 Safety Valves Requirement

84

STRESS CALCULATION GBENGINEERING Enterprises Pvt.Ltd

EQPT :

Sheet

04

Rev.

00

MFR'S SERIAL NO.

STEAM DRUM

GBE/1750/ 009

REVISION STATUS FOR STRESS CALCULATIONS PAGE No. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35

1

REV.No. 2 3 4

5

X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X

DOC NO.

6

PAGE No. 0 36

37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70

PREPARED

1

REV.No. 2 3 4

X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X

CHECKED

5 6

PAGE No. 0 71 72 73 74 75 76 77 78 79 80 81 82 83 84

APPROVED

1

REV.No. 2 3 4 5

6

X X X X X X X X X X X X X X

AI REVIEW

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

1.0 S.No.

EQPT :

STEAM DRUM

MFR'S SERIAL NO.

Sheet

05

Rev.

00

GBE/1750/009

LIST OF DRAWINGS Description

Drawing No.

Rev.Nr.

1

Steam Drum

10-10-01-3061

0

2

Detail of Steam Drum Belts and Welding.

10-10-01-3062

0

3

Stub Welding Details-I for Steam Drum

10-10-01-3063

0

4

Stub Welding Details-II for Steam Drum

10-10-01-3064

0

5

Manhole Door Assembly

10-10-01-3065

0

6

Dished End

30-10-01-3023

0

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

2.0

EQPT :

STEAM DRUM

LIST OF STANDARDS / CODES

1

ASME Section-I, 2004 Edition / Addenda 2006.

2

ASME Section II, Part-A, 2004 Edition/ Addenda 2006.

3

ASME Section-II, Part-D, 2004 Edition/ Addenda 2006.

4

ASME B 16.5,2003

5

ASME B 36.10M,2000

MFR'S SERIAL NO.

Sheet

06

Rev.

00

GBE/1750/009

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

3.0

EQPT :

STEAM DRUM

MFR'S SERIAL NO.

Sheet

07

Rev.

00

GBE/1750/009

DESIGN DATA

Construction code

:

ASME Section-1, Edition 2004 / Addenda 2006.

Fluid Handled

:

Steam and Water

MAWP ((Internal pressure)

:

79

kg/cm2 (g)

Design Temperature.

:

294

O

Hydrostatic Test Pressure

:

118.5 Kg/cm² (g)

Hydrostatic Test Temperature

:

Ambient ( not less than 70o F )

Joint efficiency

:

1.0

Radiography

:

FULL (Ref. Pg No.11)

Post Weld Heat Treatment

:

YES (Ref. Pg No.12)

Corrosion Allowance

:

NIL

Loadings

:

Applicable

C

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

4.0

EQPT :

STEAM DRUM

MFR'S SERIAL NO.

MATERIAL OF CONSTRUCTION

1

Shell

:

SA 516 Gr.70

2

Stubs & Sleeves

:

SA 105

3

Dished Heads

:

SA 516 Gr.70

4

Nozzle pipes

:

SA 106 Gr. B

5

Hydrostatic End plate

:

IS 2062

6

Manhole cover plate

:

SA 516 Gr.70

Sheet

08

Rev.

00

GBE/1750/009

STRESS CALCULATIONS

GB ENGINEERING Enterprises Pvt. Ltd.

EQPT: 5.

STEAM DRUM

MFR'S SERIAL NO.

Sheet

09

Rev.

00

GBE/1750/009

Allowable stress Values

As per ASME Sec-II Part-D 2004Edition/addenda 2006.

Min. Yeild Strength at ambient temperature 'Y'

Allowable stress ('s') at design temperature

Min. Yeild Strength at ambient Stress temperature (Kg/cm²) (0.9 x Y) kg/cm²

S. No.

Material of construction

1

SA-106 Gr B

21

240

2447.3

294

118

1203.3

2

SA 516 Gr.70

21

260

2651.3

294

136.24

3

SA 105

21

250

2549.3

294

129.84

Temp. Stress Stress Temp. (oC ) (Mpa) (Kg/cm²) (oC )

Conversion factor: To convert MPa

to kg/cm² multiply by 10.1972

Stress (Mpa)

Page Line No. No.

P.No.

Gr.No.

2203

1

1

10

5

1389.3

2386

1

2

14

20

1324

2294

1

2

14

6

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

6.0

EQPT :

MFR'S SERIAL NO.

STEAM DRUM

Hydrostatic Test Pressure Calculation

10

Rev.

00

GBE/1750/009

PG 99

01. Max. Allowable working pressure 'P'

:

79

kg/cm²(g)

02. Design pressure

:

79.09

kg/cm²(g)

03. Hydrostatic Test pressure

:

1.5 x 79

=

79

=

Amp Temp min 21ºC (70°F)

04. Hydrostatic Test Temperture

Sheet

x 1.5 =

118.5

kg/cm²

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

7.0

2

STEAM DRUM

11

Rev.

00

MFR'S SERIAL GBE/1750/009 NO.

Radiographic Examination of Welds as per PW-11

S. No.

1

EQPT :

Sheet

Equipment

All longitudinal butt welded joints in drum

All circumferential welds in drum

As per

Requirement

Table PW 11

100% Radiography shall be done for all thickness.

Table PW 11

100% Radiography shall be done. If, circumferential welds in drum exceed NPS 10 (DIN 250) or 29 mm thick.

Conclusions: Head and shell thickness is 63 mm. Hence the RT is required as per table PW 11 for L..S/C.S on drums and L.S on Manhole ring.

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

EQPT:

Sheet

12

Rev.

00

MFR'S SERIAL NO.

STEAM DRUM

GBE/1750/009

Post Weld Heat Treatment – PW 39

SL. No

1

Equipment

For Drum, PWHT shall be done after completion of all welding

As per

Requirement

Table PW 39(1)a

Yes

Conditions: 1)a

Postweld heat treatment is not mandatory for circumferential butt welds in pressure parts with a nominal wall thickness of 19 mm or less at the joints.

Conclusions: Head and shell thickness is 63 mm. Hence the PWHT is required after completion of all welding as per PW 39(1)a.

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

01.

EQPT :

STEAM DRUM

DESCRIPTION

UNIT

01 Item

Rev.

00

GBE/1750/009

DATA SHELL FOR STEAM DRUM

Drg No.

10-10-01-3062

Part No

01,02,03,04,05,06

Material Specification

SA 516 Gr.70

03 P = Max.Allowable working pressure

kg/cm²(g)

79

C

294

05 D = Inside diameter of cylinder

mm

1829

06 R = Inside radius of cylinder

mm

914.5

07 Nominal Thickness (before rolling)

mm

63

08 Nominal Thickness (after rolling)

mm

61

kg/cm²

1389.3

kg/cm²

2651.3

04 T = Design temperature

09 S=

Max. Allowable stress of shell material at design temperature.

10 Y = Min. yield strength with ambient Temp.

o

11 E = Joint Efficiency

1.0

12 y = Temperature coefficient (Ref.PG-27.4 Note 6)

0.4

13

13

CALCULATION OF CYLINDRICAL SHELL THICKNESS FOR INTERNAL PRESSURE AS PER PG-27.2.2

Sl No

02

MFR'S SERIAL NO.

Sheet

C=

Min. allowance for threading and structural stability (Ref.PG-27.4 Note 3)

mm

0

mm

53.84

mm

6.00

Minimum required thickness (PG-27.2.2) 14

15

t=

PR +C SE − ( 1 − y ) P

Minimum thickness as per code: (PG-16.3) For boiler plate minimum thickness

16

Greater of 14 & 15

mm

53.84

17

Required thickness =

mm

53.84

mm

61

18 Provided thickness = 19 Provided Thickness

> Required Thickness

HENSE SATISFACTORY

Stress at Hydrostatic pressure (PG -99) 20 Ph = Hydrostatic Pressure

kg/cm²

118.5

kg/cm²

1848

kg/cm²

2386

stress during Hydrostatic pressure 21

=

Ph[ R+(1− y )(t−C )] E (t−C )

22 90% of yield strength 23

22

>

21

* PG-16.4 :

HENCE SATISFACTORY Maximum under tolerance permissible on calculated thickness of plate material is 0.01" .

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

01.

EQPT :

DISHED HEAD

14

Rev.

00

GBE/1750/009

CALCULATION OF DISHED DISH HEADTHICKNESS FOR INTERNAL PRESSURE AS PER PG-27.2.2

Sl No

DESCRIPTION

UNIT

01 Item

02

MFR'S SERIAL NO.

Sheet

DATA DISHED HEAD

Drg No.

30-10-01-3023

Part No

01

Material Specification

SA 516 Gr.70

03 P = Max.Allowable working pressure

kg/cm²(g)

79

C

294

05 D = Inside diameter of cylinder

mm

1829

06 R = Inside radius of cylinder

mm

914.50

07 Nominal Thickness

mm

63

08 Min. Thickness (after dishing)

mm

55.0

kg/cm²

1389.3

kg/cm²

2651.3

04 T = Design temperature

09 S=

o

Max. Allowable stress of shell material at design temperature.

10 Y = Min. yield strength with ambient Temp. 11 E = Joint Efficiency

1.0

12 y = Temperature coefficient (Ref.PG-27.4 Note 6)

0.4

13 C =

Min. allowance for threading and structural stability (Ref.PG-27.4 Note 3)

14 (a) Depth of dish (b) One quarter of the inside dia of head

mm

0

mm

457.25

mm

457.25

14 (a) = 14(b)

HENCE SATISFACTORY

Minimum required thickness (PG-27.2.2) 15

16

t=

PR +C SE − ( 1 − y ) P

Minimum thickness as per code: (PG-16.3) For boiler plate minimum thickness

mm

53.84

mm

6.00

17

Greater of 15 &16

mm

53.84

18

Required thickness =

mm

53.84

mm

55

19 Provided thickness = 20 Provided Thickness

> Required Thickness

Stress at Hydrostatic pressure (PG -99) 21 Hydrostatic Pressure

HENSE SATISFACTORY

Ph

kg/cm²

118.5

kg/cm²

2041

kg/cm²

2386

stress during Hydrostatic pressure 22

=

Ph[ R+(1− y )(t−C )] E (t−C )

23 90% of yield strength 24

22

<

23

* PG-16.4 :

HENCE SATISFACTORY Maximum under tolerance permissible on calculated thickness of plate material is 0.01" .

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT :

STEAM DRUM

Sheet

15

Rev.

00

MFR'S SERIAL GBE/1750/009 NO.

6.0 CALCULATION OF NOZZLE THICKNESS FOR INTERNAL PRESSURE - AS PER PG - 27.2.2 & PG - 43

Sl No

DESCRIPTION

UNIT

01 Item

MAN HOLE RING

Drg No: Part No.

10-10-01-3062 07

02 Material specification 03 P = Maximum Allowable Working pressure 04

DATA

T=

Design Temperature

kg/cm²(g)

SA 516 GR 70 79

C

294

05 D = Outside diameter of Nozzle

mm

536

06 Nominal thickness

mm

63

07 Negative tolerance on thickness 08 Minimum thickness available 09

S = Maximum allowable stress at Design temp.

10

Y = Minimum yield strength at Ambient temp. Minimum allowance for stability 11 C = (As per PG-27.4, Note-3) 12 y = Temp.coefficient (As per PG-27.4.,Note-6) 13 E = Efficiency

o

%

0

mm

59

kg/cm²

1389.3

kg/cm² mm

2651.3 0.00 0.4 1

Minimum thickness required 14

15 16 17 18 19 20 21 22

t =

PD +C ( 2 SE +2 yP )

Required thickness of seamless shell [ As per PG - 43.1] Standard wall thickness of pipe Min.thickness of std. wall pipe [As per PG 43.2] Smaller of (15) & (17) [As per PG - 43] Minimum thickness (Asper PG-16.3) Greater of 14 ,18 & 19 Required thickness = Provided thickness =

mm

14.90

mm

53.84

mm mm mm mm mm mm mm

9.53 9.53 9.53 6.00 14.90 14.90 59.00

23 Provided thickness > Required thickness

HENCE SATISFACTORY

Stress at Hydrostatic pressure (PG.99) 24 Ph = Hydrostatic test pressure

kg/cm²

118.5

kg/cm²

491

kg/cm²

2386

Stress during hydrostatic test 25

=

Ph ( D −2 y ( t −C ) ) 2 E ( t −C )

26 90 % of yield strength (0.9xY) 27 25 < 26

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT :

MFR'S SERIAL NO.

DISHED HEAD

Sheet

16

Rev.

00

GBE/1750/ 009

5.0 Calculation of thickness of Manhole door As per PG 31.3.2 Sl No

DESCRIPTION

UNIT

01 Item

DATA MANHOLE COVER PLATE

Drg No.

10-10-01-3065

Item No.

01

02 P =

Maximum Allowable Working pressure

03 T =

Design Temperature

kg/cm²(g)

79

C

294

o

04 Cover Plate Material

SA 105

05 d = Manhole Cover Effective Diameter

mm

406.00

06 Nominal Cover Plate Thickness

mm

80.00

07 C= Constant (As per Fig.No.PG-31( m ))

0.3

08 S = Maximum allowable stress for cover Plate

kg/cm²

Minimum thickness required 09

t = d

√

CP S

1324

mm t

54.32

10 Required thickness =

mm

54.32

11 Provided thickness =

mm

80.00

12 Provided Thickness > Required Thickness

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT :

Sheet

17

Rev.

00

MFR'S SERIAL GBE/1750/009 NO.

STEAM DRUM

6.0 CALCULATION OF NOZZLE THICKNESS FOR INTERNAL PRESSURE - AS PER PG - 27.2.2 & PG - 43 Sl No

DESCRIPTION

UNIT

01 Item

DATA DOWNCOMER STUB

Drg No: Var No./Item No. 02 03

Material specification P = Maximum Allowable Working pressure

04

T=

05

D = Outside diameter of Nozzle

Design Temperature

06 Nominal thickness 07 Negative tolerance on thickness 08 Minimum thickness available

MACHINED END

10-10-01-3063 01/01 kg/cm²(g)

SA 105 79

SA 105 79

C

294

294

mm

450.56

406.4

mm

45

22.92

%

0

0 22.92

o

mm

45

09

S = Maximum allowable stress at Design temp.

kg/cm²

1324

1324

10

kg/cm² mm

2549.3

2549.3

0

0

12

Y = Minimum yield strength at Ambient temp. Minimum allowance for stability C= (As per PG-27.4, Note-3) y = Temp.coefficient (As per PG-27.4.,Note-6)

0.4

0.4

13

E = Efficiency

1

1

mm

13.13

11.84

mm

53.84

53.84

mm mm mm mm mm mm mm

9.53 9.53 9.53 6.00 13.13 13.13 45

9.53 9.53 9.53 6.00 11.84 11.84 22.92 HENCE SATISFACTORY

11

Minimum thickness required 14 15 16 17 18 19 20 21 22

t =

PD +C ( 2 SE +2 yP )

Required thickness of seamless shell [ As per PG - 43.1] Standard wall thickness of pipe Min.thickness of std. wall pipe [As per PG 43.2] Smaller of (15) & (17) [As per PG - 43] Minimum thickness (Asper PG-16.3) Greater of 14 ,18 & 19 Required thickness = Provided thickness =

23 Provided thickness > Required thickness

HENCE SATISFACTORY

Stress at Hydrostatic pressure (PG.99) 24 Ph = Hydrostatic test pressure Stress during hydrostatic test Ph ( D −2 y ( t −C ) ) = 2 E ( t −C ) 26 90 % of yield strength (0.9xY) 25

27 25 < 26

kg/cm²

118.50

118.50

kg/cm²

545.84

1003.18

kg/cm²

2294

2294

HENCE SATISFACTORY

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT :

Sheet

18

Rev.

00

MFR'S SERIAL GBE/1750/009 NO.

STEAM DRUM

6.0 CALCULATION OF NOZZLE THICKNESS FOR INTERNAL PRESSURE - AS PER PG - 27.2.2 & PG - 43 Sl No

DESCRIPTION

UNIT

01 Item

DATA SATURATED STEAM STUB

Drg No:

MACHINED END

10-10-01-3063

Var No./Item No. 02 Material specification 03

P = Maximum Allowable Working pressure

04

T=

05

D = Outside diameter of Nozzle

Design Temperature

06 Nominal thickness 07 Negative tolerance on thickness 08 Minimum thickness available

02/01 SA 105

SA 105

kg/cm²(g)

79

79

C

294

294

mm

375

273.1

mm

62.06

11.11

%

0

0

mm

62.06

11.11

o

09

S = Maximum allowable stress at Design temp.

kg/cm²

1324

1324

10

Y = Minimum yield strength at Ambient temp. Minimum allowance for stability C= (As per PG-27.4, Note-3) y = Temp.coefficient (As per PG-27.4.,Note-6) E = Efficiency

kg/cm² mm

2549.3

2549.3

0

0

0.4 1

0.4 1

mm

10.93

7.96

mm

53.84

53.84

mm mm mm mm mm mm mm

9.27 9.27 9.27 6.00 10.93 10.93 62.06

9.27 9.27 9.27 6.00 9.27 9.27 11.11 HENCE SATISFACTORY

11 12 13

Minimum thickness required 14 15 16 17 18 19 20 21 22

t =

PD +C ( 2 SE +2 yP )

Required thickness of seamless shell [ As per PG - 43.1] Standard wall thickness of pipe Min.thickness of std. wall pipe [As per PG 43.2] Smaller of (15) & (17) [As per PG - 43] Minimum thickness (Asper PG-16.3) Greater of 14 ,18 & 19 Required thickness = Provided thickness =

23 Provided thickness > Required thickness

HENCE SATISFACTORY

Stress at Hydrostatic pressure (PG.99) 24 Ph = Hydrostatic test pressure Stress during hydrostatic test Ph ( D −2 y ( t −C ) ) = 2 E ( t −C ) 26 90 % of yield strength (0.9xY) 25

27 25 < 26

kg/cm²

118.5

118.5

kg/cm²

311

1409

kg/cm²

2294

2294

HENCE SATISFACTORY

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT :

Sheet

19

Rev.

00

MFR'S SERIAL GBE/1750/009 NO.

STEAM DRUM

6.0 CALCULATION OF NOZZLE THICKNESS FOR INTERNAL PRESSURE - AS PER PG - 27.2.2 & PG - 43 Sl No

DESCRIPTION

UNIT

01 Item

DATA RISER STUB

Drg No: 02

MACHINED END

10-10-01-3063

Var No./Item No. Material specification

03

P = Maximum Allowable Working pressure

04

T=

05

D = Outside diameter of Nozzle

Design Temperature

06 Nominal thickness 07 Negative tolerance on thickness 08 Minimum thickness available

03/01 SA 105

SA 105

kg/cm²(g)

79

79

C

294

294

mm

305

219.1

mm

51.97

9.02

%

0

0

o

mm

51.97

9.02

09

S = Maximum allowable stress at Design temp.

kg/cm²

1324

1324

10

Y = Minimum yield strength at Ambient temp. Minimum allowance for stability C= (As per PG-27.4, Note-3) y = Temp.coefficient (As per PG-27.4.,Note-6) E = Efficiency

kg/cm² mm

2549.3

2549.3

0

0

0.4 1

0.4 1

mm

8.89

6.38

mm

53.84

53.84

mm mm mm mm mm mm mm

8.18 8.18 8.18 6.00 8.89 8.89 51.97

8.18 8.18 8.18 6.00 8.18 8.18 9.02 HENCE SATISFACTORY

11 12 13

Minimum thickness required 14 15 16 17 18 19 20 21 22

t =

PD +C ( 2 SE +2 yP )

Required thickness of seamless shell [ As per PG - 43.1] Standard wall thickness of pipe Min.thickness of std. wall pipe [As per PG 43.2] Smaller of (15) & (17) [As per PG - 43] Minimum thickness (Asper PG-16.3) Greater of 14 ,18 & 19 Required thickness = Provided thickness =

23 Provided thickness > Required thickness

HENCE SATISFACTORY

Stress at Hydrostatic pressure (PG.99) 24 Ph = Hydrostatic test pressure

kg/cm²

118.5

118.5

Stress during hydrostatic test Ph ( D −2 y ( t −C ) ) 25 = 2 E ( t −C )

kg/cm²

300

1392

26 90 % of yield strength (0.9xY)

kg/cm²

2294

2294

HENCE SATISFACTORY

HENCE SATISFACTORY

27 25 < 26

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT :

STEAM DRUM

Sheet

20

Rev.

00

MFR'S SERIAL GBE/1750/009 NO.

6.0 CALCULATION OF NOZZLE THICKNESS FOR INTERNAL PRESSURE - AS PER PG - 27.2.2 & PG - 43 Sl No

DESCRIPTION

UNIT

01 Item

DATA FEED WATER STUB

Drg No:

10-10-01-3063

Var No./Item No. 02 Material specification 03

P = Maximum Allowable Working pressure

04

T=

04/01 SA 106 Gr B kg/cm²(g)

79

C

294

05 D = Outside diameter of Nozzle

mm

114.3

06 Nominal thickness

mm

6.02

%

12.5

Design Temperature

07 Negative tolerance on thickness 08 Minimum thickness available

o

mm

5.27

09 S = Maximum allowable stress at Design temp.

kg/cm²

1203.3

10

kg/cm² mm

2447.3

Y = Minimum yield strength at Ambient temp. Minimum allowance for stability 11 C = (As per PG-27.4, Note-3) 12 y = Temp.coefficient (As per PG-27.4.,Note-6) 13 E = Efficiency 14 15 16 17 18 19 20 21 22

Minimum thickness required

t =

PD +C ( 2 SE +2 yP )

Required thickness of seamless shell [ As per PG - 43.1] Standard wall thickness of pipe Min.thickness of std. wall pipe [As per PG 43.2] Smaller of (15) & (17) [As per PG - 43] Minimum thickness (Asper PG-16.3) Greater of 14 ,18 & 19 Required thickness = Provided thickness =

0 0.4 1

mm

3.66

mm

53.84

mm mm mm mm mm mm mm

6.02 5.27 5.27 N.A 5.27 5.27 5.27

23 Provided thickness > Required thickness

HENCE SATISFACTORY

Stress at Hydrostatic pressure (PG.99) 24 Ph = Hydrostatic test pressure Stress during hydrostatic test Ph ( D −2 y ( t −C ) ) = 2 E ( t −C ) 26 90 % of yield strength (0.9xY) 25

27 25 < 26

kg/cm²

118.5

kg/cm²

1238

kg/cm²

2203 HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT :

STEAM DRUM

Sheet

21

Rev.

00

MFR'S SERIAL GBE/1750/009 NO.

6.0 CALCULATION OF NOZZLE THICKNESS FOR INTERNAL PRESSURE - AS PER PG - 27.2.2 & PG - 43 Sl No

DESCRIPTION

UNIT

01 Item

DATA FEED SLEEVE

Drg No:

10-10-01-3063

Var No./Item No. 02 Material specification 03

P = Maximum Allowable Working pressure

04

T=

Design Temperature

04/02 SA 105 kg/cm²(g)

79

C

294

o

05 D = Outside diameter of Nozzle

mm

195

06 Nominal thickness

mm

38.85

07 Negative tolerance on thickness

%

0

mm

38.85

09 S = Maximum allowable stress at Design temp.

kg/cm²

1324.00

10

kg/cm² mm

2549.3

08 Minimum thickness available Y = Minimum yield strength at Ambient temp. Minimum allowance for stability 11 C = (As per PG-27.4, Note-3) 12 y = Temp.coefficient (As per PG-27.4.,Note-6) 13 E = Efficiency 14 15 16 17 18 19 20 21 22

Minimum thickness required

t =

PD +C ( 2 SE +2 yP )

Required thickness of seamless shell [ As per PG - 43.1] Standard wall thickness of pipe Min.thickness of std. wall pipe [As per PG 43.2] Smaller of (15) & (17) [As per PG - 43] Minimum thickness (Asper PG-16.3) Greater of 14 ,18 & 19 Required thickness = Provided thickness =

0 0.4 1

mm

5.68

mm

53.84

mm mm mm mm mm mm mm

8.18 8.18 8.18 6.00 8.18 8.18 38.85

23 Provided thickness > Required thickness

HENCE SATISFACTORY

Stress at Hydrostatic pressure (PG.99) 24 Ph = Hydrostatic test pressure

kg/cm²

118.5

Stress during hydrostatic test Ph ( D −2 y ( t −C ) ) 25 = 2 E ( t −C )

kg/cm²

250.0

26 90 % of yield strength (0.9xY)

kg/cm²

2294

27 25 < 26

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT :

STEAM DRUM

Sheet

22

Rev.

00

MFR'S SERIAL GBE/1750/009 NO.

6.0 CALCULATION OF NOZZLE THICKNESS FOR INTERNAL PRESSURE - AS PER PG - 27.2.2 & PG - 43 Sl No

DESCRIPTION

UNIT

FEED WATER HEATER ( INLET & OUTLET ) STUB

01 Item Drg No: Var No./Item No. 02 Material specification 03 P = Maximum Allowable Working pressure 04

T=

DATA

Design Temperature

10-10-01-3063 05/01,06 / 01 kg/cm²(g)

SA 106 Gr B 79

C

294

05 D = Outside diameter of Nozzle

mm

168.3

06 Nominal thickness

mm

7.11

07 Negative tolerance on thickness

o

%

12.5

mm

6.22

09 S = Maximum allowable stress at Design temp.

kg/cm²

1203.3

10

kg/cm² mm

2447.3

08 Minimum thickness available Y = Minimum yield strength at Ambient temp. Minimum allowance for stability 11 C = (As per PG-27.4, Note-3) 12 y = Temp.coefficient (As per PG-27.4.,Note-6) 13 E = Efficiency 14 15 16 17 18 19 20 21 22

Minimum thickness required

t =

PD +C ( 2 SE +2 yP )

Required thickness of seamless shell [ As per PG - 43.1] Standard wall thickness of pipe Min.thickness of std. wall pipe [As per PG 43.2] Smaller of (15) & (17) [As per PG - 43] Minimum thickness (Asper PG-16.3) Greater of 14 ,18 & 19 Required thickness = Provided thickness =

0 0.4 1

mm

5.38

mm

53.84

mm mm mm mm mm mm mm

7.11 6.22 6.22 6.00 6.22 6.22 6.22

23 Provided thickness > Required thickness

HENCE SATISFACTORY

Stress at Hydrostatic pressure (PG.99) 24 Ph = Hydrostatic test pressure Stress during hydrostatic test Ph ( D −2 y ( t −C ) ) = 2 E ( t −C ) 26 90 % of yield strength (0.9xY) 25

27 25 < 26

kg/cm²

118.5

kg/cm²

1556

kg/cm²

2203 HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT :

STEAM DRUM

Sheet

23

Rev.

00

MFR'S SERIAL GBE/1750/009 NO.

6.0 CALCULATION OF NOZZLE THICKNESS FOR INTERNAL PRESSURE - AS PER PG - 27.2.2 & PG - 43 Sl No

DESCRIPTION

UNIT

FEED WATER HEATER (INLET &OUTLET) SLEEVE

01 Item Drg No: Var No./Item No.

10-10-01-3063 05/02, 06/02

02 Material specification 03 P = Maximum Allowable Working pressure 04

T=

DATA

Design Temperature

kg/cm²(g)

SA 105 79

C

294

05 D = Outside diameter of Nozzle

mm

265

06 Nominal thickness

mm

46.85

07 Negative tolerance on thickness 08 Minimum thickness available

o

%

0

mm

46.85

09 S = Maximum allowable stress at Design temp.

kg/cm²

1324

10

kg/cm² mm

2549.3

Y = Minimum yield strength at Ambient temp. Minimum allowance for stability 11 C = (As per PG-27.4, Note-3) 12 y = Temp.coefficient (As per PG-27.4.,Note-6)

0.4

13 E = Efficiency 14 15 16 17 18 19 20 21 22

1

Minimum thickness required

t =

0

PD +C ( 2 SE +2 yP )

Required thickness of seamless shell [ As per PG - 43.1] Standard wall thickness of pipe Min.thickness of std. wall pipe [As per PG 43.2] Smaller of (15) & (17) [As per PG - 43] Minimum thickness (Asper PG-16.3) Greater of 14 ,18 & 19 Required thickness = Provided thickness =

mm

7.72

mm

53.84

mm mm mm mm mm mm mm

9.27 9.27 9.27 6.00 9.27 9.27 46.85

23 Provided thickness > Required thickness

HENCE SATISFACTORY

Stress at Hydrostatic pressure (PG.99) 24 Ph = Hydrostatic test pressure

kg/cm²

118.5

Stress during hydrostatic test Ph ( D −2 y ( t −C ) ) 25 = 2 E ( t −C )

kg/cm²

288

26 90 % of yield strength (0.9xY)

kg/cm²

2294

27 25 < 26

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT :

Sheet

24

Rev.

00

MFR'S SERIAL GBE/1750/009 NO.

STEAM DRUM

6.0 CALCULATION OF NOZZLE THICKNESS FOR INTERNAL PRESSURE - AS PER PG - 27.2.2 & PG - 43 Sl No

DESCRIPTION

UNIT

01 Item

DATA PG,PT& VENT STUBS

Drg No:

MACHINED END

10-10-01-3063

Var No./Item No. 02 Material specification 03

P = Maximum Allowable Working pressure

04

T=

05

D = Outside diameter of Nozzle

Design Temperature

06 Nominal thickness 07 Negative tolerance on thickness 08 Minimum thickness available

07/01 kg/cm²(g)

SA 105

SA 105

79

79

C

294

294

mm

44.3

33.4

mm

10

4.55

%

0

0

mm

10

4.55

o

09

S = Maximum allowable stress at Design temp.

kg/cm²

1324

1324

10

Y = Minimum yield strength at Ambient temp. Minimum allowance for stability C= (As per PG-27.4, Note-3) y = Temp.coefficient (As per PG-27.4.,Note-6) E = Efficiency

kg/cm² mm

2549.3

2549.3

0

0

0.4 1

0.4 1

mm

1.29

0.97

mm

53.84

53.84

mm mm mm mm mm mm mm

3.38 3.38 3.38 N.A 3.38 3.38 10

3.38 3.38 3.38 N.A 3.38 3.38 4.55 HENCE SATISFACTORY

11 12 13

Minimum thickness required 14 15 16 17 18 19 20 21 22

t =

PD +C ( 2 SE +2 yP )

Required thickness of seamless shell [ As per PG - 43.1] Standard wall thickness of pipe Min.thickness of std. wall pipe [As per PG 43.2] Smaller of (15) & (17) [As per PG - 43] Minimum thickness (Asper PG-16.3) Greater of 14 ,18 & 19 Required thickness = Provided thickness =

23 Provided thickness > Required thickness

HENCE SATISFACTORY

Stress at Hydrostatic pressure (PG.99) 24 Ph = Hydrostatic test pressure

kg/cm²

118.5

118.5

Stress during hydrostatic test Ph ( D −2 y ( t −C ) ) 25 = 2 E ( t −C )

kg/cm²

215

388

26 90 % of yield strength (0.9xY)

kg/cm²

2294

2294

HENCE SATISFACTORY

HENCE SATISFACTORY

27 25 < 26

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT :

STEAM DRUM

Sheet

25

Rev.

00

MFR'S SERIAL GBE/1750/009 NO.

6.0 CALCULATION OF NOZZLE THICKNESS FOR INTERNAL PRESSURE - AS PER PG - 27.2.2 & PG - 43 Sl No

DESCRIPTION

UNIT

01 Item

DATA SPARE STUB

Drg No:

10-10-01-3063

Var No./Item No. 02 Material specification 03

P = Maximum Allowable Working pressure

04

T=

Design Temperature

08/01 SA 105 kg/cm²(g)

79

C

294

o

05 D = Outside diameter of Nozzle

mm

93

06 Nominal thickness

mm

19.53

07 Negative tolerance on thickness

%

0

mm

19.53

09 S = Maximum allowable stress at Design temp.

kg/cm²

1324

10

kg/cm² mm

2549.3

08 Minimum thickness available Y = Minimum yield strength at Ambient temp. Minimum allowance for stability 11 C = (As per PG-27.4, Note-3) 12 y = Temp.coefficient (As per PG-27.4.,Note-6) 13 E = Efficiency 14 15 16 17 18 19 20 21 22

Minimum thickness required

t =

PD +C ( 2 SE +2 yP )

Required thickness of seamless shell [ As per PG - 43.1] Standard wall thickness of pipe Min.thickness of std. wall pipe [As per PG 43.2] Smaller of (15) & (17) [As per PG - 43] Minimum thickness (Asper PG-16.3) Greater of 14 ,18 & 19 Required thickness = Provided thickness =

0 0.4 1

mm

2.71

mm

53.84

mm mm mm mm mm mm mm

5.16 5.16 5.16 N.A 5.16 5.16 19.53

23 Provided thickness > Required thickness

HENCE SATISFACTORY

Stress at Hydrostatic pressure (PG.99) 24 Ph = Hydrostatic test pressure Stress during hydrostatic test Ph ( D −2 y ( t −C ) ) = 2 E ( t −C ) 26 90 % of yield strength (0.9xY) 25

27 25 < 26

kg/cm²

118.5

kg/cm²

235

kg/cm²

2294 HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT :

Sheet

26

Rev.

00

MFR'S SERIAL GBE/1750/009 NO.

STEAM DRUM

6.0 CALCULATION OF NOZZLE THICKNESS FOR INTERNAL PRESSURE - AS PER PG - 27.2.2 & PG - 43 Sl No

DESCRIPTION

UNIT

01 Item

DATA SAFETY VALVE STUB

Drg No: Var No./Item No. 02 03

Material specification P = Maximum Allowable Working pressure

04

T=

05

D = Outside diameter of Nozzle

Design Temperature

06 Nominal thickness 07 Negative tolerance on thickness 08 Minimum thickness available

MACHINED END

10-10-01-3063 09/01 kg/cm²(g)

SA 105 79

SA 105 79

C

294

294

mm

110

108.1

mm

23.25

19.1

%

0

0

o

mm

23.25

19.1

09

S = Maximum allowable stress at Design temp.

kg/cm²

1324

1324

10

kg/cm² mm

2549.3

2549.3

0

0

12

Y = Minimum yield strength at Ambient temp. Minimum allowance for stability C= (As per PG-27.4, Note-3) y = Temp.coefficient (As per PG-27.4.,Note-6)

0.4

0.4

13

E = Efficiency

1

1

mm

3.21

3.15

mm

53.84

53.84

mm mm mm mm mm mm mm

6.02 6.02 6.02 N.A 6.02 6.02 23.25

6.02 6.02 6.02 N.A 6.02 6.02 19.1 HENCE SATISFACTORY

11

Minimum thickness required 14 15 16 17 18 19 20 21 22

t =

PD +C ( 2 SE +2 yP )

Required thickness of seamless shell [ As per PG - 43.1] Standard wall thickness of pipe Min.thickness of std. wall pipe [As per PG 43.2] Smaller of (15) & (17) [As per PG - 43] Minimum thickness (Asper PG-16.3) Greater of 14 ,18 & 19 Required thickness = Provided thickness =

23 Provided thickness > Required thickness

HENCE SATISFACTORY

Stress at Hydrostatic pressure (PG.99) 24 Ph = Hydrostatic test pressure Stress during hydrostatic test Ph ( D −2 y ( t −C ) ) = 2 E ( t −C ) 26 90 % of yield strength (0.9xY) 25

27 25 < 26

kg/cm²

118.5

118.5

kg/cm²

233

288

kg/cm²

2294

2294

HENCE SATISFACTORY

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT :

Sheet

27

Rev.

00

MFR'S SERIAL GBE/1750/009 NO.

STEAM DRUM

6.0 CALCULATION OF NOZZLE THICKNESS FOR INTERNAL PRESSURE - AS PER PG - 27.2.2 & PG - 43 Sl No

DESCRIPTION

UNIT

01 Item

DATA CD STUB

Drg No: Var No./Item No. 02 03

Material specification P = Maximum Allowable Working pressure

04

T=

05

D = Outside diameter of Nozzle

Design Temperature

06 Nominal thickness 07 Negative tolerance on thickness 08 Minimum thickness available

MACHINED END

10-10-01-3064 13/01 kg/cm²(g)

SA 106 Gr B 79

SA 106 Gr B 79

C

294

294

mm

33.4

33.4

mm

4.55

3.38 12.5

o

%

12.5

mm

3.98

2.96

09

S = Maximum allowable stress at Design temp.

kg/cm²

1203.3

1203.3

10

Y = Minimum yield strength at Ambient temp. Minimum allowance for stability C= (As per PG-27.4, Note-3) y = Temp.coefficient (As per PG-27.4.,Note-6) E = Efficiency

kg/cm² mm

2447.3

2447.3

0

0

0.4 1

0.4 1

mm

1.07

1.07

mm

53.84

53.84

mm mm mm mm mm mm mm

3.38 2.96 2.96 N.A 2.96 2.96 3.98

3.38 2.96 2.96 N.A 2.96 2.96 2.96 HENCE SATISFACTORY

11 12 13

Minimum thickness required 14 15 16 17 18 19 20 21 22

t =

PD +C ( 2 SE +2 yP )

Required thickness of seamless shell [ As per PG - 43.1] Standard wall thickness of pipe Min.thickness of std. wall pipe [As per PG 43.2] Smaller of (15) & (17) [As per PG - 43] Minimum thickness (Asper PG-16.3) Greater of 14 ,18 & 19 Required thickness = Provided thickness =

23 Provided thickness > Required thickness

HENCE SATISFACTORY

Stress at Hydrostatic pressure (PG.99) 24 Ph = Hydrostatic test pressure

kg/cm²

118.5

118.5

Stress during hydrostatic test Ph ( D −2 y ( t −C ) ) 25 = 2 E ( t −C )

kg/cm²

450

621

26 90 % of yield strength (0.9xY)

kg/cm²

2203

2203

HENCE SATISFACTORY

HENCE SATISFACTORY

27 25 < 26

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT :

STEAM DRUM

Sheet

28

Rev.

00

MFR'S SERIAL GBE/1750/009 NO.

6.0 CALCULATION OF NOZZLE THICKNESS FOR INTERNAL PRESSURE - AS PER PG - 27.2.2 & PG - 43 Sl No

DESCRIPTION

UNIT

01 Item

DATA LE & LG STUB

Drg No: Var No./Item No. 02 Material specification 03 P = Maximum Allowable Working pressure

10-10-01-3064 10/01,11/01,14/01,15/01 kg/cm²(g)

SA 106 Gr B 79

C

294

05 D = Outside diameter of Nozzle

mm

33.4

06 Nominal thickness

mm

4.55

%

12.5

mm

3.98

kg/cm²

1203.3

kg/cm² mm

2447.3

04

T=

Design Temperature

07 Negative tolerance on thickness 08 Minimum thickness available 09

S = Maximum allowable stress at Design temp.

10

Y = Minimum yield strength at Ambient temp. Minimum allowance for stability 11 C = (As per PG-27.4, Note-3) 12 y = Temp.coefficient (As per PG-27.4.,Note-6)

o

0.4

13 E = Efficiency 14 15 16 17 18 19 20 21 22

Minimum thickness required

t =

PD +C ( 2 SE +2 yP )

Required thickness of seamless shell [ As per PG - 43.1] Standard wall thickness of pipe Min.thickness of std. wall pipe [As per PG 43.2] Smaller of (15) & (17) [As per PG - 43] Minimum thickness (Asper PG-16.3) Greater of 14 ,18 & 19 Required thickness = Provided thickness =

0 1

mm

1.07

mm

53.84

mm mm mm mm mm mm mm

3.38 2.96 2.96 N.A 2.96 2.96 3.98

23 Provided thickness > Required thickness

HENCE SATISFACTORY

Stress at Hydrostatic pressure (PG.99) 24 Ph = Hydrostatic test pressure Stress during hydrostatic test Ph ( D −2 y ( t −C ) ) = 2 E ( t −C ) 26 90 % of yield strength (0.9xY) 25

27 25 < 26

kg/cm²

118.5

kg/cm²

450

kg/cm²

2203 HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT :

STEAM DRUM

Sheet

29

Rev.

00

MFR'S SERIAL GBE/1750/009 NO.

6.0 CALCULATION OF NOZZLE THICKNESS FOR INTERNAL PRESSURE - AS PER PG - 27.2.2 & PG - 43 Sl No

DESCRIPTION

UNIT

01 Item

DATA LE,LG & CHEMICAL DOSING SLEEVE

Drg No:

10-10-01-3064

Var No./Item No. 02 Material specification 03

P = Maximum Allowable Working pressure

04

T=

10/02,11/02,13/02,14/02,15/02 SA 105 kg/cm²(g)

79

C

294

05 D = Outside diameter of Nozzle

mm

66

06 Nominal thickness

mm

14

Design Temperature

07 Negative tolerance on thickness

o

%

0

mm

14.00

09 S = Maximum allowable stress at Design temp.

kg/cm²

1324

10

kg/cm² mm

2549.3

08 Minimum thickness available Y = Minimum yield strength at Ambient temp. Minimum allowance for stability 11 C = (As per PG-27.4, Note-3) 12 y = Temp.coefficient (As per PG-27.4.,Note-6) 13 E = Efficiency 14 15 16 17 18 19 20 21 22

Minimum thickness required

t =

PD +C ( 2 SE +2 yP )

Required thickness of seamless shell [ As per PG - 43.1] Standard wall thickness of pipe Min.thickness of std. wall pipe [As per PG 43.2] Smaller of (15) & (17) [As per PG - 43] Minimum thickness (Asper PG-16.3) Greater of 14 ,18 & 19 Required thickness = Provided thickness =

0 0.4 1

mm

1.92

mm

53.84

mm mm mm mm mm mm mm

5.16 5.16 5.16 N.A 5.16 5.16 14.00

23 Provided thickness > Required thickness

HENCE SATISFACTORY

Stress at Hydrostatic pressure (PG.99) 24 Ph = Hydrostatic test pressure

kg/cm²

118.5

Stress during hydrostatic test 25 Ph ( D −2 y ( t −C ) ) = 2 E ( t −C )

kg/cm²

232

26 90 % of yield strength (0.9xY)

kg/cm²

2294

27 25 < 26

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT :

STEAM DRUM

Sheet

30

Rev.

00

MFR'S SERIAL GBE/1750/009 NO.

6.0 CALCULATION OF NOZZLE THICKNESS FOR INTERNAL PRESSURE - AS PER PG - 27.2.2 & PG - 43 Sl No

DESCRIPTION

UNIT

01 Item

DATA CONTINUOUS BLOW DOWN STUB

Drg No:

10-10-01-3064

Var No./Item No. 02 Material specification 03

P = Maximum Allowable Working pressure

04

T=

12/01 SA 106 Gr B kg/cm²(g)

79

C

294

05 D = Outside diameter of Nozzle

mm

48.3

06 Nominal thickness

mm

5.08

%

12.5

Design Temperature

07 Negative tolerance on thickness 08 Minimum thickness available

o

mm

4.45

09 S = Maximum allowable stress at Design temp.

kg/cm²

1203.3

10

kg/cm² mm

2447.3

Y = Minimum yield strength at Ambient temp. Minimum allowance for stability 11 C = (As per PG-27.4, Note-3) 12 y = Temp.coefficient (As per PG-27.4.,Note-6) 13 E = Efficiency 14 15 16 17 18 19 20 21 22

Minimum thickness required

t =

PD +C ( 2 SE +2 yP )

Required thickness of seamless shell [ As per PG - 43.1] Standard wall thickness of pipe Min.thickness of std. wall pipe [As per PG 43.2] Smaller of (15) & (17) [As per PG - 43] Minimum thickness (Asper PG-16.3) Greater of 14 ,18 & 19 Required thickness = Provided thickness =

0 0.4 1

mm

1.54

mm

53.84

mm mm mm mm mm mm mm

3.68 3.22 3.22 N.A 3.22 3.22 4.45

23 Provided thickness > Required thickness

HENCE SATISFACTORY

Stress at Hydrostatic pressure (PG.99) 24 Ph = Hydrostatic test pressure

kg/cm²

118.5

Stress during hydrostatic test Ph ( D −2 y ( t −C ) ) 25 = 2 E ( t −C )

kg/cm²

596

26 90 % of yield strength (0.9xY)

kg/cm²

2203

27 25 < 26

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT :

STEAM DRUM

Sheet

31

Rev.

00

MFR'S SERIAL GBE/1750/009 NO.

6.0 CALCULATION OF NOZZLE THICKNESS FOR INTERNAL PRESSURE - AS PER PG - 27.2.2 & PG - 43 Sl No

DESCRIPTION

UNIT

01 Item

CBD SLEEVE

Drg No: Var No./Item No. 02 Material specification 03 P = Maximum Allowable Working pressure 04

T=

DATA

Design Temperature

10-10-01-3064 12/02 kg/cm²(g)

SA 105 79

C

294

05 D = Outside diameter of Nozzle

mm

93

06 Nominal thickness

mm

20

%

0

07 Negative tolerance on thickness 08 Minimum thickness available

o

mm

20.0

09 S = Maximum allowable stress at Design temp.

kg/cm²

1324

10

kg/cm² mm

2549.3

Y = Minimum yield strength at Ambient temp. Minimum allowance for stability 11 C = (As per PG-27.4, Note-3) 12 y = Temp.coefficient (As per PG-27.4.,Note-6)

0 0.4

13 E = Efficiency

1

Minimum thickness required 14 15 16 17 18 19 20 21 22

t =

PD +C ( 2 SE +2 yP )

Required thickness of seamless shell [ As per PG - 43.1] Standard wall thickness of pipe Min.thickness of std. wall pipe [As per PG 43.2] Smaller of (15) & (17) [As per PG - 43] Minimum thickness (Asper PG-16.3) Greater of 14 ,18 & 19 Required thickness = Provided thickness =

mm

2.71

mm

53.84

mm mm mm mm mm mm mm

5.74 5.74 5.74 N.A 5.74 5.74 20.00

23 Provided thickness > Required thickness

HENCE SATISFACTORY

Stress at Hydrostatic pressure (PG.99) 24 Ph = Hydrostatic test pressure

kg/cm²

118.5

Stress during hydrostatic test Ph ( D −2 y ( t −C ) ) 25 = 2 E ( t −C )

kg/cm²

228

26 90 % of yield strength (0.9xY)

kg/cm²

2294

27 25 < 26

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT :

STEAM DRUM

MFR'S SERIAL NO.

Sheet

32

Rev.

00

GBE/1750/009

7.0 MAXIMUM DIAMETER OF OPENINGS IN SHELL & DISHED HEAD As per PG-32.1.2 Sl No

DESCRIPTION

UNIT

01 Item 02 P =

Maximum Allowable Working pressure

03 D = Outside diameter 04 S = Maximum allowable stress at Design temp. 05 t = Actual thickness 06 K = Factor

K=

DATA SHELL

DISHED HEAD

kg/cm²(g)

79

79

mm

1951

1939

kg/cm²

1389.3

1389.3

mm

61

55

0.999

1.101

35.63

35.63

PD 1 . 82 St

d = Maximum permissible diameter of uncompensated 07

hole (As per Fig. PG-32) d=

8.08

[ Dt (1 - K)]1/3

08 For compensation checking refer - LIST OF OPENINGS

mm

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

Location Opening of Stub Dia (mm)

Maximum dia of uncompensated hole d (mm)

MFR'S SERIAL NO.

Rev.

00

GBE/1750/009

(Var.No.)

LIST OF OPENINGS Stub Details

STEAM DRUM

33

IETM NO

8.0 S L N o

EQPT :

Sheet

Description

01 01

01

DOWNCOMER

360.56

Shell

35.63

Compensation Check Required

02 01

02

SATURATED STEAM STUB

250.88

Shell

35.63

Compensation Check Required

03 01

03

RISERS

201.06

Shell

35.63

Compensation Check Required

04 02

04

FEEDWATER INLET

35.63

Compensation Check Required

35.63

Compensation Check Required

35.63

Compensation Check Not Required

35.63

Compensation Check Required

35.63

Compensation Check Required

FEED WATER

117

05 02 05,06 HEATER

171

06 01

24.3

INLET/OULET

07 10,11

07 02 13,14 15

PT ,PG & VENT LT, LG &CHEMICAL DOSING.

Dished Head Dished Head Shell

Remarks

Dished 38

Head Dished

08 02

12

BLOWDOWN

53

10 01

09

SAFETY VALVE

64

Shell

35.63

Compensation Check Required

11 01

08

SPARE

53.94

Shell

35.63

Compensation Check Required

418

Dished Head

35.63

Compensation Check Required

12

06

MANHOLE RING

Head

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

9.0

EQPT.

SHELL

34

Rev.

00

Mfr's Serial No.:

Compensation check calculation

Sl No

Sheet

GBE/1750/009

As per PG-32.1

DESCRIPTION

UNIT

01 Item

DATA DOWN COMER STUB

Drg. No.

10-10-01-3063

Var No./Item No.

01/01

02 Shell Data: Minimum thk of Shell

t

mm

61

Required thk of Shell

tr

mm

53.84

Ss

kg / cm²

1389.3

D

mm

450.56

Finished diamter of opening

d

mm

360.56

Minimum thk of nozzle

tn

mm

45

Required thk of nozzle

trn

mm

Max.allowable stress at Design temp. 03 Nozzle Data: Nozzle O.D

Material specification of nozzle Max. Allowable stress at design temp

13.13 SA 105

Sn

kg / cm²

fr1 = Sn/Ss

1324 0.95

04 Pad plate Data: Outer dia of the pad plate

Dp

mm

Thickness of the pad plate

te

mm

Max.allowable stress at Design temp.

Sp

kg / cm²

fr3 = Sp/Ss

690 25 1389.3 1.00

Actual projection of nozzle Outside/inside the shell 2.5 x t+ t

mm

213.50

2.5x tn + t

mm

173.50

mm

173.50

mm

173.50

Minimum of 2.5t and 2.5tn

y

Allowable projection of nozzle O.S /I.S of the shell

05 Correction factor

F

1

06 Area to be compensated (d+2tn) tr F

A

sq mm

24258.15

sq mm

1937.21

07 Compensation available as per PG 36.4.1 (a) Compensation available in Shell i) ii)

(d- 2tn)(t-trF) 2t(t-trF) Max. of i (or) ii

A1

sq mm

873.52

sq mm

1937.21

sq mm

9263.47

sq mm

8352.31

sq mm

8352.31

(b) Compensation available in nozzle i)

2(tn-trn) (2.5tfr1)

ii)

2(tn-trn) (2.5tn+ te)fr1 Smaller of i (or) ii

A2

(c) Compensation available in nozzle from inside projection

h mm

Actual projection of nozzle inside the shell Allowable projection of nozzle inside the shell 2 tnfr1h

mm

A3

sq mm

121 173.50 10378.15

(d) Compensation available in pad plate Thickness of the pad plate =((Dp-d-(2*tn))*te*(Sp/Ss)

te mm A5

25

sq mm

5986.00

sq mm

26653.67

sq mm

24258.15

(f) Total compensation available A1 + A2 + A3+ A5 (g) Total compensation required 08 Available Area > Required Area

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT.

SHELL

35

Rev.

00

Mfr's Serial No.:

9.0 Compensation check calculation Sl No

Sheet

GBE/1750/009

As per PG-32.1

DESCRIPTION

UNIT

01 Item

DATA SATURATED STEAM STUB

Drg. No.

10-10-01-3063

Var No./Item No.

02/01

02 Shell Data: Minimum thk of Shell

t

mm

61

Required thk of Shell

tr

mm

53.84

Max.allowable stress at Design temp.

Ss

kg / cm²

1389.3

Nozzle O.D

D

mm

375

Finished diamter of opening

d

mm

250.88

Minimum thk of nozzle

tn

mm

62.06

Required thk of nozzle

trn

mm

03 Nozzle Data:

Material specification of nozzle Max. Allowable stress at design temp

10.93 SA 105

Sn

kg / cm²

fr1 = Sn/Ss

1324 0.95

Actual projection of nozzle Outside/inside the shell 2.5 x t+ t

mm

213.50

2.5x tn + t

mm

216.15

mm

213.50

mm

213.50

Minimum of 2.5t and 2.5tn

y

Allowable projection of nozzle O.S /I.S of the shell

04 Correction factor

F

1

05 Area to be compensated (d+2tn) tr F

A

sq mm

20190.00

06 Compensation available as per PG 36.4.1 (a) Compensation available in Shell i)

(d- 2tn)(t-trF)

sq mm

907.60

ii)

2t(t-trF)

sq mm

873.52

sq mm

907.60

Max. of i (or) ii

A1

(b) Compensation available in nozzle i)

2(tn-trn) (2.5tfr1)

sq mm

14814.92

ii)

2(tn-trn) (2.5tn+ te)fr1

sq mm

15072.36

sq mm

14814.92

Smaller of i (or) ii

A2

( c) Compensation available in nozzle from inside projecti

h mm

Actual projection of nozzle inside the shell Allowable projection of nozzle inside the shell 2 tnfr1h

A3

61

mm

213.50

sq mm

7192.75

sq mm

22915.27

sq mm

20190.00

(d) Total compensation available A1 + A2 + A3 (e) Total compensation required 07 Available Area > Required Area

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT.

SHELL

36

Rev.

00

Mfr's Serial No.:

9.0 Compensation check calculation Sl No

Sheet

GBE/1750/009

As per PG-32.1

DESCRIPTION

UNIT

01 Item

DATA RISER STUB

Drg. No.

10-10-01-3063

Var No./Item No.

03/01

02 Shell Data: Minimum thk of Shell

t

mm

61

Required thk of Shell

tr

mm

53.84

Max.allowable stress at Design temp.

Ss

kg / cm²

1389.3

Nozzle O.D

D

mm

305

Finished diamter of opening

d

mm

201.06

Minimum thk of nozzle

tn

mm

51.97

Required thk of nozzle

trn

mm

03 Nozzle Data:

Material specification of nozzle Max. Allowable stress at design temp

8.89 SA 105

Sn

kg / cm²

fr1 = Sn/Ss

1324 0.95

Actual projection of nozzle Outside/inside the shell 2.5 x t+ t

mm

213.50

2.5x tn + t

mm

190.93

mm

190.93

mm

190.93

Minimum of 2.5t and 2.5tn

y

Allowable projection of nozzle O.S /I.S of the shell

04 Correction factor

F

1

05 Area to be compensated (d+2tn) tr F

A

sq mm

16421.20

06 Compensation available as per PG 36.4.1 (a) Compensation available in Shell i)

(d- 2tn)(t-trF)

sq mm

695.38

ii)

2t(t-trF)

sq mm

873.52

sq mm

873.52

Max. of i (or) ii

A1

(b) Compensation available in nozzle i)

2(tn-trn) (2.5tfr1)

sq mm

12482.43

ii)

2(tn-trn) (2.5tn+ te)fr1

sq mm

10634.62

sq mm

10634.62

Smaller of i (or) ii

A2

( c) Compensation available in nozzle from inside projection

h mm

Actual projection of nozzle inside the shell Allowable projection of nozzle inside the shell 2 tnfr1h

A3

61

mm

190.93

sq mm

6023.32

sq mm

17531.46

sq mm

16421.20

(d) Total compensation available A1 + A2 + A3 (e) Total compensation required 07 Available Area > Required Area

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT.

DISHED END

37

Rev.

00

Mfr's Serial No.:

9.0 Compensation check calculation Sl No

Sheet

GBE/1750/009

As per PG-32.1

DESCRIPTION

UNIT

01 Item

DATA FEED WATER STUB SLEEVE

Drg. No.

10-10-01-3063

Var No./Item No.

04

02 Shell Data: Minimum thk of Shell

t

mm

55

Required thk of Shell

tr

mm

53.84

Max.allowable stress at Design temp.

Ss

kg / cm²

1389.3

Nozzle O.D

D

mm

195

Finished diamter of opening

d

mm

117

Minimum thk of nozzle

tn

mm

38.85

Required thk of nozzle

trn

mm

03 Nozzle Data:

Material specification of nozzle Max. Allowable stress at design temp

8.18 SA 105

Sn

kg / cm²

fr1 = Sn/Ss

1324 0.95

Actual projection of nozzle Outside/inside the shell 2.5 x t+ t

mm

192.50

2.5x tn + t

mm

152.13

mm

152.13

mm

152.13

03 Minimum of 2.5t and 2.5tn

y

Allowable projection of nozzle O.S /I.S of the shell

04 Correction factor

F

1

05 Area to be compensated (d+2tn) tr F

A

sq mm

10482.6

06 Compensation available as per PG 36.4.1 (a) Compensation available in Shell i)

(d- 2tn)(t-trF)

sq mm

45.59

ii)

2t(t-trF)

sq mm

127.60

sq mm

127.60

Max. of i (or) ii

A1

(b) Compensation available in nozzle i)

2(tn-trn) (2.5tfr1)

sq mm

8012.50

ii)

2(tn-trn) (2.5tn+ te)fr1

sq mm

5659.77

sq mm

5659.77

Smaller of i (or) ii

A2

( c) Compensation available in nozzle from inside projection Actual projection of nozzle inside the shell Allowable projection of nozzle inside the shell 2 tnfr1h

A3

h mm

130.0

mm

152.13

sq mm

9595.95

sq mm

15383.32

sq mm

10482.60

(d) Total compensation available A1 + A2 + A3 (e) Total compensation required 07 Available Area > Required Area

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT.

DISHED END

38

Rev.

00

Mfr's Serial No.:

9.0 Compensation check calculation Sl No

Sheet

GBE/1750/009

As per PG-32.1

DESCRIPTION

UNIT

DATA FEEDWATER HEATER INLET & OUTLET STUB SLEEVE

01 Item Drg. No.

10-10-01-3063

Var No./Item No.

05/02,06/02

02 Shell Data: Minimum thk of Shell

t

mm

55

Required thk of Shell

tr

mm

53.84

Max.allowable stress at Design temp.

Ss

kg / cm²

1389.3

Nozzle O.D

D

mm

265

Finished diamter of opening

d

mm

171

Minimum thk of nozzle

tn

mm

46.85

Required thk of nozzle

trn

mm

03 Nozzle Data:

Material specification of nozzle Max. Allowable stress at design temp

9.27 SA 105

Sn

kg / cm²

fr1 = Sn/Ss

1324 0.95

Actual projection of nozzle Outside/inside the shell 2.5 x t+ t

mm

192.50

2.5x tn + t

mm

172.13

mm

172.13

mm

172.13

03 Minimum of 2.5t and 2.5tn

y

Allowable projection of nozzle O.S /I.S of the shell

04 Correction factor

F

1

05 Area to be compensated (d+2tn) tr F

A

sq mm

14251.4

06 Compensation available as per PG 36.4.1 (a) Compensation available in Shell i)

(d- 2tn)(t-trF)

sq mm

89.67

ii)

2t(t-trF)

sq mm

127.60

sq mm

127.60

Max. of i (or) ii

A1

(b) Compensation available in nozzle i)

2(tn-trn) (2.5tfr1)

sq mm

9817.80

ii)

2(tn-trn) (2.5tn+ te)fr1

sq mm

8362.96

sq mm

8362.96

Smaller of i (or) ii

A2

( c) Compensation available in nozzle from inside projection Actual projection of nozzle inside the shell Allowable projection of nozzle inside the shell 2 tnfr1h

A3

h mm

130.0

mm

172.13

sq mm

11571.95

sq mm

20062.51

sq mm

14251.40

(d) Total compensation available A1 + A2 + A3 (e) Total compensation required 07 Available Area > Required Area

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT.

DISHED END

39

Rev.

00

Mfr's Serial No.:

9.0 Compensation check calculation Sl No

Sheet

GBE/1750/009

As per PG-32.1

DESCRIPTION

UNIT

01 Item

DATA BLOW DOWN STUB SLEEVE

Drg. No.

10-10-01-3064

Var No./Item No.

12/02

02 Shell Data: Minimum thk of Shell

t

mm

55

Required thk of Shell

tr

mm

53.84

Max.allowable stress at Design temp.

Ss

kg / cm²

1389.3

Nozzle O.D

D

mm

93

Finished diamter of opening

d

mm

53

Minimum thk of nozzle

tn

mm

20

Required thk of nozzle

trn

mm

03 Nozzle Data:

Material specification of nozzle Max. Allowable stress at design temp

5.74 SA 105

Sn

kg / cm²

fr1 = Sn/Ss

1324 0.95

Actual projection of nozzle Outside/inside the shell 2.5 x t+ t

mm

192.50

2.5x tn + t

mm

105.00

mm

105.00

mm

105.00

03 Minimum of 2.5t and 2.5tn

y

Allowable projection of nozzle O.S /I.S of the shell

04 Correction factor

F

1

05 Area to be compensated (d+2tn) tr F

A

sq mm

5007.1

06 Compensation available as per PG 36.4.1 (a) Compensation available in Shell i)

(d- 2tn)(t-trF)

sq mm

15.08

ii)

2t(t-trF)

sq mm

127.60

sq mm

127.60

Max. of i (or) ii

A1

(b) Compensation available in nozzle i)

2(tn-trn) (2.5tfr1)

sq mm

3725.40

ii)

2(tn-trn) (2.5tn+ te)fr1

sq mm

1354.70

sq mm

1354.70

Smaller of i (or) ii

A2

( c) Compensation available in nozzle from inside projection Actual projection of nozzle inside the shell Allowable projection of nozzle inside the shell 2 tnfr1h

A3

h mm

130.0

mm

105.00

sq mm

4940.00

sq mm

6422.30

sq mm

5007.10

(d) Total compensation available A1 + A2 + A3 (e) Total compensation required 07 Available Area > Required Area

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT.

DISHED END

40

Rev.

00

Mfr's Serial No.:

9.0 Compensation check calculation Sl No

Sheet

GBE/1750/009

As per PG-32.1

DESCRIPTION

UNIT

DATA LEVEL GAUGE LOWER & UPPER STUB SLEEVE

01 Item Drg. No.

10-10-01-3064

Var No./Item No.

14/02 & 15/02

02 Shell Data: Minimum thk of Shell

t

mm

61

Required thk of Shell

tr

mm

53.84

Max.allowable stress at Design temp.

Ss

kg / cm²

1389.3

Nozzle O.D

D

mm

66

Finished diamter of opening

d

mm

38

Minimum thk of nozzle

tn

mm

14.00

Required thk of nozzle

trn

mm

03 Nozzle Data:

Material specification of nozzle Max. Allowable stress at design temp

5.16 SA 105

Sn

kg / cm²

fr1 = Sn/Ss

1324 0.95

Actual projection of nozzle Outside/inside the shell 2.5 x t+ t

mm

213.50

2.5x tn + t

mm

96.00

mm

96.00

mm

96.00

03 Minimum of 2.5t and 2.5tn

y

Allowable projection of nozzle O.S /I.S of the shell

04 Correction factor

F

1

05 Area to be compensated (d+2tn) tr F

A

sq mm

3553.4

06 Compensation available as per PG 36.4.1 (a) Compensation available in Shell i)

(d- 2tn)(t-trF)

sq mm

71.60

ii)

2t(t-trF)

sq mm

873.52

sq mm

873.52

Max. of i (or) ii

A1

(b) Compensation available in nozzle i)

2(tn-trn) (2.5tfr1)

sq mm

2561.40

ii)

2(tn-trn) (2.5tn+ te)fr1

sq mm

587.86

sq mm

587.86

Smaller of i (or) ii

A2

( c) Compensation available in nozzle from inside projection Actual projection of nozzle inside the shell Allowable projection of nozzle inside the shell 2 tnfr1h

A3

h mm

96.0

mm

96.00

sq mm

2553.60

sq mm

4014.98

sq mm

3553.40

(d) Total compensation available A1 + A2 + A3 (e) Total compensation required 07 Available Area > Required Area

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT.

DISHED END

41

Rev.

00

Mfr's Serial No.:

9.0 Compensation check calculation Sl No

Sheet

GBE/1750/009

As per PG-32.1

DESCRIPTION

UNIT

01 Item

DATA SPARE STUB

Drg. No.

10-10-01-3063

Var No./Item No.

08/01

02 Shell Data: Minimum thk of Shell

t

mm

61

Required thk of Shell

tr

mm

53.84

Max.allowable stress at Design temp.

Ss

kg / cm²

1389.3

Nozzle O.D

D

mm

93

Finished diamter of opening

d

mm

53.94

Minimum thk of nozzle

tn

mm

19.53

Required thk of nozzle

trn

mm

03 Nozzle Data:

Material specification of nozzle Max. Allowable stress at design temp

5.16 SA 105

Sn

kg / cm²

fr1 = Sn/Ss

1324 0.95

Actual projection of nozzle Outside/inside the shell 2.5 x t+ t

mm

213.50

2.5x tn + t

mm

109.83

mm

109.83

mm

109.83

03 Minimum of 2.5t and 2.5tn

y

Allowable projection of nozzle O.S /I.S of the shell

04 Correction factor

F

1

05 Area to be compensated (d+2tn) tr F

A

sq mm

5007.1

06 Compensation available as per PG 36.4.1 (a) Compensation available in Shell i)

(d- 2tn)(t-trF)

sq mm

106.54

ii)

2t(t-trF)

sq mm

873.52

sq mm

873.52

Max. of i (or) ii

A1

(b) Compensation available in nozzle i)

2(tn-trn) (2.5tfr1)

sq mm

4163.70

ii)

2(tn-trn) (2.5tn+ te)fr1

sq mm

1333.07

sq mm

1333.07

Smaller of i (or) ii

A2

( c) Compensation available in nozzle from inside projection Actual projection of nozzle inside the shell Allowable projection of nozzle inside the shell 2 tnfr1h

A3

h mm

101.0

mm

109.83

sq mm

3747.81

sq mm

5954.40

sq mm

5007.10

(d) Total compensation available A1 + A2 + A3 (e) Total compensation required 07 Available Area > Required Area

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT.

DISHED END

42

Rev.

00

Mfr's Serial No.:

9.0 Compensation check calculation Sl No

Sheet

GBE/1750/009

As per PG-32.1

DESCRIPTION

UNIT

01 Item

DATA SAFETY VALVE STUB

Drg. No.

10-10-01-3063

Var No./Item No.

09/01

02 Shell Data: Minimum thk of Shell

t

mm

61

Required thk of Shell

tr

mm

53.84

Max.allowable stress at Design temp.

Ss

kg / cm²

1389.3

Nozzle O.D

D

mm

110

Finished diamter of opening

d

mm

64

Minimum thk of nozzle

tn

mm

23.25

Required thk of nozzle

trn

mm

03 Nozzle Data:

Material specification of nozzle Max. Allowable stress at design temp

6.02 SA 105

Sn

kg / cm²

fr1 = Sn/Ss

1324 0.95

Actual projection of nozzle Outside/inside the shell 2.5 x t+ t

mm

213.50

2.5x tn + t

mm

119.13

mm

119.13

mm

119.13

03 Minimum of 2.5t and 2.5tn

y

Allowable projection of nozzle O.S /I.S of the shell

04 Correction factor

F

1

05 Area to be compensated (d+2tn) tr F

A

sq mm

5949.3

06 Compensation available as per PG 36.4.1 (a) Compensation available in Shell i)

(d- 2tn)(t-trF)

sq mm

125.30

ii)

2t(t-trF)

sq mm

873.52

sq mm

873.52

Max. of i (or) ii

A1

(b) Compensation available in nozzle i)

2(tn-trn) (2.5tfr1)

sq mm

4992.40

ii)

2(tn-trn) (2.5tn+ te)fr1

sq mm

1902.84

sq mm

1902.84

Smaller of i (or) ii

A2

( c) Compensation available in nozzle from inside projection

h mm

Actual projection of nozzle inside the shell Allowable projection of nozzle inside the shell 2 tnfr1h

mm

A3

91.0 119.13

sq mm

4019.93

sq mm

6796.28

sq mm

5949.30

(d) Total compensation available A1 + A2 + A3 (e) Total compensation required 07 Available Area > Required Area

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

9.0

EQPT.

SHELL

43

Rev.

00

Mfr's Serial No.:

Compensation check calculation

Sl No

Sheet

GBE/1750/009

As per PG-32.1

DESCRIPTION

UNIT

01 Item

DATA MAN HOLE RING

Drg. No.

10-10-01-3062

Var No./Item No.

01/01

02 Shell Data: Minimum thk of Shell

t

mm

55

Required thk of Shell

tr

mm

53.84

Ss

kg / cm²

1389.3

D

mm

536

Finished diamter of opening

d

mm

418

Minimum thk of nozzle

tn

mm

59

Required thk of nozzle

trn

mm

Max.allowable stress at Design temp. 03 Nozzle Data: Nozzle O.D

Material specification of nozzle Max. Allowable stress at design temp

14.90 SA 516 Gr.70

Sn

kg / cm²

fr1 = Sn/Ss

1389.3 1.00

04 Pad plate Data: Outer dia of the pad plate

Dp

mm

Thickness of the pad plate

te

mm

Max.allowable stress at Design temp.

Sp

kg / cm²

fr3 = Sp/Ss

750 20 1389.3 1.00

Actual projection of nozzle Outside/inside the shell 2.5 x t+ t

mm

192.50

2.5x tn + t

mm

202.50

mm

192.50

mm

192.50

Minimum of 2.5t and 2.5tn

y

Allowable projection of nozzle O.S /I.S of the shell

05 Correction factor

F

1

06 Area to be compensated (d+2tn) tr F

A

sq mm

28858.24

sq mm

348.00

sq mm

127.60

sq mm

348.00

sq mm

12127.50

sq mm

14773.50

sq mm

12127.50

07 Compensation available as per PG 36.4.1 (a) Compensation available in Shell i) ii)

(d- 2tn)(t-trF) 2t(t-trF) Max. of i (or) ii

A1

(b) Compensation available in nozzle i)

2(tn-trn) (2.5tfr1)

ii)

2(tn-trn) (2.5tn+ te)fr1 Smaller of i (or) ii

A2

(c) Compensation available in nozzle from inside projection

h mm

Actual projection of nozzle inside the shell Allowable projection of nozzle inside the shell 2 tnfr1h

mm

A3

sq mm

147 192.50 17346.00

(d) Compensation available in pad plate Thickness of the pad plate =((Dp-d-(2*tn))*te*(Sp/Ss)

te mm A5

20

sq mm

4280.00

sq mm

34101.50

sq mm

28858.24

(f) Total compensation available A1 + A2 + A3+ A5 (g) Total compensation required 08 Available Area > Required Area

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

EQPT.

STEAM DRUM

10.0 Minimum requirements for attachments weld on Shell Sl DESCRIPTION No

UNIT

01 Item

44

Rev.

00

MFR'S SERIAL NO.

GBE/1750/009

(As per PW-16)

DATA DOWNCOMER STUB

Drg No.

10-10-01-3063

Var No./Item No. 01 t = Minimum thickness of Shell

01/01 t

mm

61

02 tn = Nominal thickness of Stub (As per Fig PW-16.1d)

mm

45

03

Sheet

Conditions tmin = Smaller of 3/4" (or) thickness of either of weld parts (t or tn) t1 = t2= Not less than smaller of 1/4" (or) 0.7 x t min t1+t21.25tmin t1&t26.35 mm

04

Applicable sketch from Fig.PW-16.1

Sketch (d)

(a) tmin

mm

19.05

(b) 0.7 tmin

mm

13.34

(c) Required t1

mm

6.35

(d) Required t2

mm

6.35

(e) Provided t1

mm

17.7

(f) Provided t2

mm

20.9

(e) 4 (e) > 4 (c) & 4 (f) > 4 (d)

HENCE SATISFACTORY

05 t1

mm

17.7

t2

mm

20.9

(a) t1 + t2

mm

38.6

(b) 1 1/4 x tmin

mm

23.8

(c) t1 + t2 > 1 1/4 tmin

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

EQPT.

STEAM DRUM

10.0 Minimum requirements for attachments weld on Shell Sl DESCRIPTION No

UNIT

01 Item

45

Rev.

00

MFR'S SERIAL NO.

GBE/1750/009

(As per PW-16)

DATA MAN HOLE RING

Drg No.

10-10-01-3062

Var No./Item No. 01 t = Minimum thickness of Shell

01/01 t

mm

55

02 tn = Nominal thickness of Stub (As per Fig PW-16.1d)

mm

63

03

Sheet

Conditions tmin = Smaller of 3/4" (or) thickness of either of weld parts (t or tn) t1 = t2= Not less than smaller of 1/4" (or) 0.7 x t min t1+t21.25tmin t1&t26.35 mm

04

Applicable sketch from Fig.PW-16.1

Sketch (d)

(a) tmin

mm

19.05

(b) 0.7 tmin

mm

13.34

(c) Required t1

mm

6.35

(d) Required t2

mm

6.35

(e) Provided t1

mm

11.9

(f) Provided t2

mm

20.7

(e) 4 (e) > 4 (c) & 4 (f) > 4 (d)

HENCE SATISFACTORY

05 t1

mm

11.9

t2

mm

20.7

(a) t1 + t2

mm

32.6

(b) 1 1/4 x tmin

mm

23.8

(c) t1 + t2 > 1 1/4 tmin

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

EQPT.

STEAM DRUM

MFR'S SERIAL NO.

Sheet

46

Rev.

00

GBE/1750/009

10.0 Minimum requirements for attachments weld on Shell (As per PW-16) Sl DESCRIPTION No

UNIT

01 Item

DATA SATUREATED STEAM STUB

Drg.No

10-10-01-3063

Var No./Item No.

02/01

02 Nominal thickness of Shell

t

mm

61

03 Nominal thickness of Stub

tn

mm

62.06

04 Conditions

(Shell to Nozzles)

Smaller of 3/4" (or) thickness of either of weld parts (t or tn) Not less than smaller of 1/4" (or) 0.7 x tmin 05

tmin tc

Applicable sketch from Fig.PW-16.1

Sketch (h)

(a) tmin

mm

19.05

(b) 0.7 tmin

mm

13.34

(c) Required tc

mm

6.35

(e) Provided tc

mm

20.9

(f) Provided tc > Required tc

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

EQPT.

STEAM DRUM

MFR'S SERIAL NO.

Sheet

47

Rev.

00

GBE/1750/009

10.0 Minimum requirements for attachments weld on Shell (As per PW-16) Sl DESCRIPTION No

UNIT

01 Item

DATA RISER STUB

Drg.No

10-10-01-3063

Var No./Item No.

03/01

02 Nominal thickness of Shell

t

mm

61

03 Nominal thickness of Stub

tn

mm

51.97

04 Conditions

(Shell to Nozzles)

Smaller of 3/4" (or) thickness of either of weld parts (t or tn) Not less than smaller of 1/4" (or) 0.7 x tmin 05

tmin tc

Applicable sketch from Fig.PW-16.1

Sketch (h)

(a) tmin

mm

19.05

(b) 0.7 tmin

mm

13.34

(c) Required tc

mm

6.35

(e) Provided tc

mm

20.9

(f) Provided tc > Required tc

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

EQPT.

STEAM DRUM

10.0 Minimum requirements for attachments weld on Shell Sl DESCRIPTION No

UNIT

01 Item

48

Rev.

00

MFR'S SERIAL NO.

GBE/1750/009

(As per PW-16)

DATA FEED WATER SLEEVE

Drg No.

10-10-01-3063

Var No./Item No. 01 t = Minimum thickness of Shell

04/02 t

02 tn = Nominal thickness of Stub (As per Fig PW-16.1d)

03

Sheet

mm

55

mm

38.85

Conditions tmin = Smaller of 3/4" (or) thickness of either of weld parts (t or tn) t1 = t2= Not less than smaller of 1/4" (or) 0.7 x t min t1+t21.25tmin t1&t26.35 mm

04

Applicable sketch from Fig.PW-16.1

Sketch (d)

(a) tmin

mm

19.05

(b) 0.7 tmin

mm

13.34

(c) Required t1

mm

6.35

(d) Required t2

mm

6.35

(e) Provided t1

mm

13.2

(f) Provided t2

mm

22.6

(e) 4 (e) > 4 (c) & 4 (f) > 4 (d)

HENCE SATISFACTORY

05 t1

mm

13.2

t2

mm

22.6

(a) t1 + t2

mm

35.8

(b) 1 1/4 x tmin

mm

23.8

(c) t1 + t2 > 1 1/4 tmin

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

EQPT.

10.0 Minimum requirements for attachments weld on Shell UNIT

Rev.

00

GBE/1750/009

(As per PW-16)

DATA FEEDWATER HEATER INLET & OUTLET SLEEVE.

01 Item Drg No.

10-10-01-3063

Var No./Item No.

05/02,06/02

01 t = Minimum thickness of Shell

mm

55

02 tn = Nominal thickness of Stub (As per Fig PW-16.1d)

mm

46.85

03

49

MFR'S SERIAL NO.

STEAM DRUM

Sl DESCRIPTION No

Sheet

Conditions tmin = Smaller of 3/4" (or) thickness of either of weld parts (t or tn) t1 = t2= Not less than smaller of 1/4" (or) 0.7 x t min t1+t21.25tmin t1&t26.35 mm

04

Applicable sketch from Fig.PW-16.1

Sketch (d)

(a) tmin

mm

19.05

(b) 0.7 tmin

mm

13.34

(c) Required t1

mm

6.35

(d) Required t2

mm

6.35

(e) Provided t1

mm

38.8

(f) Provided t2

mm

17.3

(e) 4 (e) > 4 (c) & 4 (f) > 4 (d)

HENCE SATISFACTORY

05 t1

mm

38.8

t2

mm

17.3

(a) t1 + t2

mm

56.1

(b) 1 1/4 x tmin

mm

23.8

(c) t1 + t2 > 1 1/4 tmin

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

EQPT.

STEAM DRUM

MFR'S SERIAL NO.

Sheet

50

Rev.

00

GBE/1750/009

10.0 Minimum requirements for attachments weld on Shell (As per PW-16) Sl DESCRIPTION No

UNIT

01 Item

DATA SPARE STUB

Drg.No

10-10-01-3063

Var No./Item No.

08/01

02 Nominal thickness of Shell

t

mm

61

03 Nominal thickness of Stub

tn

mm

19.53

04 Conditions

(Shell to Nozzles)

Smaller of 3/4" (or) thickness of either of weld parts (t or tn) Not less than smaller of 1/4" (or) 0.7 x tmin 05

tmin tc

Applicable sketch from Fig.PW-16.1

Sketch (h)

(a) tmin

mm

19.05

(b) 0.7 tmin

mm

13.34

(c) Required tc

mm

6.35

(e) Provided tc

mm

8.40

(f) Provided tc > Required tc

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

EQPT.

STEAM DRUM

10.0 Minimum requirements for attachments weld on Shell Sl DESCRIPTION No

UNIT

01 Item

51

Rev.

00

MFR'S SERIAL NO.

GBE/1750/009

(As per PW-16)

DATA SAFETY VALVE STUB

Drg No.

10-10-01-3063

Var No./Item No.

09/01

01 t = Minimum thickness of Shell

mm

61

02 tn = Nominal thickness of Stub (As per Fig PW-16.1d)

mm

23.25

03

Sheet

Conditions tmin = Smaller of 3/4" (or) thickness of either of weld parts (t or tn) t1 = t2= Not less than smaller of 1/4" (or) 0.7 x t min t1+t21.25tmin t1&t26.35 mm

04

Applicable sketch from Fig.PW-16.1

Sketch (d)

(a) tmin

mm

19.05

(b) 0.7 tmin

mm

13.34

(c) Required t1

mm

6.35

(d) Required t2

mm

6.35

(e) Provided t1

mm

18.8

(f) Provided t2

mm

18.8

(e) 4 (e) > 4 (c) & 4 (f) > 4 (d)

HENCE SATISFACTORY

05 t1

mm

18.8

t2

mm

18.8

(a) t1 + t2

mm

37.6

(b) 1 1/4 x tmin

mm

23.8

(c) t1 + t2 > 1 1/4 tmin

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

EQPT.

STEAM DRUM

10.0 Minimum requirements for attachments weld on Shell Sl DESCRIPTION No

UNIT

01 Item

52

Rev.

00

MFR'S SERIAL NO.

GBE/1750/009

(As per PW-16)

DATA LEVEL ELEMENT SLEEVE

Drg No.

10-10-01-3064

Var No./Item No.

10/02,11/02

01 t = Minimum thickness of Shell

mm

55

02 tn = Nominal thickness of Stub (As per Fig PW-16.1d)

mm

14.00

03

Sheet

Conditions tmin = Smaller of 3/4" (or) thickness of either of weld parts (t or tn) t1 = t2= Not less than smaller of 1/4" (or) 0.7 x t min t1+t21.25tmin t1&t26.35 mm

04

Applicable sketch from Fig.PW-16.1

Sketch (d)

(a) tmin

mm

14

(b) 0.7 tmin

mm

9.80

(c) Required t1

mm

6.35

(d) Required t2

mm

6.35

(e) Provided t1

mm

28.3

(f) Provided t2

mm

9.8

(e) 4 (e) > 4 (c) & 4 (f) > 4 (d)

HENCE SATISFACTORY

05 t1

mm

28.3

t2

mm

9.8

(a) t1 + t2

mm

38.1

(b) 1 1/4 x tmin

mm

17.5

(c) t1 + t2 > 1 1/4 tmin

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

EQPT.

STEAM DRUM

10.0 Minimum requirements for attachments weld on Shell Sl DESCRIPTION No

UNIT

01 Item

53

Rev.

00

MFR'S SERIAL NO.

GBE/1750/009

(As per PW-16)

DATA BLOW DOWN SLEEVE

Drg No.

10-10-01-3064

Var No./Item No.

12/02

01 t = Minimum thickness of Shell

mm

55

02 tn = Nominal thickness of Stub (As per Fig PW-16.1d)

mm

20.00

03

Sheet

Conditions tmin = Smaller of 3/4" (or) thickness of either of weld parts (t or tn) t1 = t2= Not less than smaller of 1/4" (or) 0.7 x tmin t1+t21.25tmin t1&t26.35 mm

04

Applicable sketch from Fig.PW-16.1

Sketch (d)

(a) tmin

mm

19.05

(b) 0.7 tmin

mm

13.34

(c) Required t1

mm

6.35

(d) Required t2

mm

6.35

(e) Provided t1

mm

27.8

(f) Provided t2

mm

12.93

(e) 4 (e) > 4 (c) & 4 (f) > 4 (d)

HENCE SATISFACTORY

05 t1

mm

27.8

t2

mm

12.9

(a) t1 + t2

mm

40.7

(b) 1 1/4 x tmin

mm

23.8

(c) t1 + t2 > 1 1/4 tmin

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

EQPT.

STEAM DRUM

10.0 Minimum requirements for attachments weld on Shell Sl DESCRIPTION No

UNIT

01 Item

54

Rev.

00

MFR'S SERIAL NO.

GBE/1750/009

(As per PW-16)

DATA CHEMICAL DOSING SLEEVE

Drg No.

10-10-01-3064

Var No./Item No.

13/02

01 t = Minimum thickness of Shell

mm

55

02 tn = Nominal thickness of Stub (As per Fig PW-16.1d)

mm

14.00

03

Sheet

Conditions tmin = Smaller of 3/4" (or) thickness of either of weld parts (t or tn) t1 = t2= Not less than smaller of 1/4" (or) 0.7 x tmin t1+t21.25tmin t1&t26.35 mm

04

Applicable sketch from Fig.PW-16.1

Sketch (d)

(a) tmin

mm

14

(b) 0.7 tmin

mm

9.80

(c) Required t1

mm

6.35

(d) Required t2

mm

6.35

(e) Provided t1

mm

22.3

(f) Provided t2

mm

8.3

(e) 4 (e) > 4 (c) & 4 (f) > 4 (d)

HENCE SATISFACTORY

05 t1

mm

22.3

t2

mm

8.3

(a) t1 + t2

mm

30.6

(b) 1 1/4 x tmin

mm

17.5

(c) t1 + t2 > 1 1/4 tmin

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

EQPT.

STEAM DRUM

10.0 Minimum requirements for attachments weld on Shell Sl DESCRIPTION No

UNIT

01 Item

55

Rev.

00

MFR'S SERIAL NO.

GBE/1750/009

(As per PW-16)

DATA LG SLEEVE (UPPER)

Drg No.

10-10-01-3064

Var No./Item No.

14/02

01 t = Minimum thickness of Shell

mm

61

02 tn = Nominal thickness of Stub (As per Fig PW-16.1d)

mm

14

03

Sheet

Conditions tmin = Smaller of 3/4" (or) thickness of either of weld parts (t or tn) t1 = t2= Not less than smaller of 1/4" (or) 0.7 x tmin t1+t21.25tmin t1&t26.35 mm

04

Applicable sketch from Fig.PW-16.1

Sketch (d)

(a) tmin

mm

14

(b) 0.7 tmin

mm

9.80

(c) Required t1

mm

6.35

(d) Required t2

mm

6.35

(e) Provided t1

mm

27.3

(f) Provided t2

mm

6.7

(e) 4 (e) > 4 (c) & 4 (f) > 4 (d)

HENCE SATISFACTORY

05 t1

mm

27.3

t2

mm

6.7

(a) t1 + t2

mm

34.0

(b) 1 1/4 x tmin

mm

17.5

(c) t1 + t2 > 1 1/4 tmin

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

EQPT.

STEAM DRUM

10.0 Minimum requirements for attachments weld on Shell Sl DESCRIPTION No

UNIT

01 Item

56

Rev.

00

MFR'S SERIAL NO.

GBE/1750/009

(As per PW-16)

DATA LG SLEEVE (LOWER)

Drg No.

10-10-01-3064

Var No./Item No.

15/02

01 t = Minimum thickness of Shell

mm

61

02 tn = Nominal thickness of Stub (As per Fig PW-16.1d)

mm

14.0

03

Sheet

Conditions tmin = Smaller of 3/4" (or) thickness of either of weld parts (t or tn) t1 = t2= Not less than smaller of 1/4" (or) 0.7 x t min t1+t21.25tmin t1&t26.35 mm

04

Applicable sketch from Fig.PW-16.1

Sketch (d)

(a) tmin

mm

14

(b) 0.7 tmin

mm

9.80

(c) Required t1

mm

6.35

(d) Required t2

mm

6.35

(e) Provided t1

mm

31.3

(f) Provided t2

mm

8

(e) 4 (e) > 4 (c) & 4 (f) > 4 (d)

HENCE SATISFACTORY

05 t1

mm

31.3

t2

mm

8.0

(a) t1 + t2

mm

39.3

(b) 1 1/4 x tmin

mm

17.5

(c) t1 + t2 > 1 1/4 tmin

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

11.0

EQPT.

00

GBE/1750/009

The minimum required strength of weld ( As per PG - 37 ) UNIT

01 Item

DATA DOWN COMER STUB

02 Drg. No.

10-10-01-3063

03 Var No./Item No.

01/01

04 Material specification

SA 105

05 d1=

O.D of Nozzle

mm

06 tn=

Nominal thickness of nozzle

mm

45

07 d=

Diameter of finished opening

mm

360.56

08 tr=

Required thickness of header [ E=1]

mm

53.84

09 t=

Actual Thickness of shell

mm

61

10 Sn=

Max. allowable stress for nozzle

kg/mm²

13.24

11 Sv=

Max. allowable stress for header

kg/mm²

13.89

12 Sp=

Max. allowable stress for pad plate

kg/mm²

13.89

450.56

13 Outer dia of the pad plate

Dp

mm

690

14 Thickness of the pad plate

te

mm

25

15 fr1= Sn/Sv

0.95

16 fr2= (lesser of Sn or Sp) /Sv

0.95

17 fr3= Sp /Sv

1.00

18 Ff=

Factor

1.00

19

Weld leg

mm

WL1

25.00

WL2.1 (Outside fillet)

25.00

WL2.2 (Inside Fillet)

30.00

Weld leg

20

57

Rev.

MFR'S SERIAL NO.

STEAM DRUM

Sl DESCRIPTION No

t2

Sheet

mm

40.00

mm2

24258.15

mm2

1937.21

mm2

873.52

The required minimum strength to be provided by the combined load carrying elements through each load - carrying path. W=

(A-A1)SV

A= (d+2tn) tr F A1= Max.of

{

(d- 2tn)(t-trF) 2t(t-trF)

}

A1= W=

1937.21 (A-A1)SV

310105

Strength of load carrying elements in path number 1, As per Fig PW -16 (c) (1) 21 External fillet weld in shear = 1/2  WL2.1 (Dp) (factor in PW-15.2=0.49) x SV x fr3

kg

184460

kg

277365

kg

137746

22 Groove welds in tension = 1/2 t2 x (d+2tn) (factor in PW-15.2=0.74) x Sv x fr1 23 Internal fillet weld in shear = 1/2  WL2.2 (d+2tn) (factor in PW-15.2=0.49) x SV x fr1 24 21+22+23

599571

25 24 >20

HENCE SATISFACTORY

Strength of load carrying elements in path number 3, As per Fig PW -16 (c) (2) 26 External fillet weld in shear = 1/2  WL1 (d+2tn) (factor in PW-15.2=0.49) x SV x fr1

kg

114788

kg

277365

kg

137746

27 Groove welds in tension = 1/2 t2 x (d+2tn) (factor in PW-15.2=0.74) x Sv x fr1 28 Internal fillet weld in shear = 1/2  WL2.2 (d+2tn) (factor in PW-15.2=0.49) x SV x fr1 29 26+27+28 30 29 > 20

529899 HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

11.0

EQPT.

MFR'S SERIAL NO.

STEAM DRUM

UNIT

01 Item

00

GBE/1750/009

DATA MAN HOLE RING

02 Drg. No.

10-10-01-3062

03 Var No./Item No.

01/07

04 Material specification

SA 516 GR70

05 d1=

O.D of Nozzle

mm

06 tn=

Nominal thickness of nozzle

mm

63

07 d=

Diameter of finished opening

mm

410.0

08 tr=

Required thickness of header [ E=1]

mm

53.84

09 t=

Actual Thickness of shell

mm

55

10 Sn=

Max. allowable stress for nozzle

kg/mm²

13.89

11 Sv=

Max. allowable stress for header

kg/mm²

13.89

12 Sp=

Max. allowable stress for pad plate

kg/mm²

13.89

536

13 Outer dia of the pad plate

Dp

mm

750

14 Thickness of the pad plate

te

mm

20

15 fr1= Sn/Sv

1.00

16 fr2= (lesser of Sn or Sp) /Sv

1.00

17 fr3= Sp /Sv

1.00

18 Ff=

Factor

1.00

19

Weld leg

mm

WL1

20.00

WL2.1 (Outside fillet)

20.00

WL2.2 (Inside Fillet)

25.00

Weld leg

20

58

Rev.

The minimum required strength of weld ( As per PG - 37 )

Sl DESCRIPTION No

t2

Sheet

mm

25.00

mm2

28858.24

mm2

329.44

mm2

127.60

The required minimum strength to be provided by the combined load carrying elements through each load - carrying path. W=

(A-A1)SV

A= (d+2tn) tr F A1= Max.of

{

(d- 2tn)(t-trF) 2t(t-trF)

}

A1= W=

329.44 (A-A1)SV

396351

Strength of load carrying elements in path number 1, As per Fig PW -16 (c) (1) 21 External fillet weld in shear = 1/2  WL2.1 (Dp) (factor in PW-15.2=0.49) x SV x fr3

kg

160400

kg

216398

kg

143290

22 Groove welds in tension = 1/2 t2 x (d+2tn) (factor in PW-15.2=0.74) x Sv x fr1 23 Internal fillet weld in shear = 1/2  WL2.2 (d+2tn) (factor in PW-15.2=0.49) x SV x fr1 24 21+22+23

520087

25 24 >20

HENCE SATISFACTORY

Strength of load carrying elements in path number 3, As per Fig PW -16 (c) (2) 26 External fillet weld in shear = 1/2  WL1 (d+2tn) (factor in PW-15.2=0.49) x SV x fr1

kg

114632

kg

216398

kg

143290

27 Groove welds in tension = 1/2 t2 x (d+2tn) (factor in PW-15.2=0.74) x Sv x fr1 28 Internal fillet weld in shear = 1/2  WL2.2 (d+2tn) (factor in PW-15.2=0.49) x SV x fr1 29 26+27+28 30 29 > 20

474320 HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

11.0

EQPT.

Rev.

00

GBE/1750/009

The minimum required strength of weld ( As per PG - 37 ) UNIT

01 Item

DATA FEED WATER STUB SLEEVE

02 Drg. No.

10-10-01-3063

03 Var No./Item No.

04/02

04 Material specification

SA 105

05 d1=

O.D of Nozzle

mm

195

06 tn=

Nominal thickness of nozzle

mm

38.85

07 d=

Diameter of finished opening

mm

117.30

08 tr=

Required thickness of header [ E=1]

mm

53.84

09 t=

Actual Thickness of shell

mm

55

10 Sn=

Max. allowable stress for nozzle

kg/mm²

13.24

11 Sv=

Max. allowable stress for header

kg/mm²

13.89

12 fr1= Sn/Sv

0.95

13 Ff=

Factor

1.00

14

Weld leg

mm

WL1

24.00

WL2

28.30

Weld leg

15

59

MFR'S SERIAL NO.

STEAM DRUM

Sl DESCRIPTION No

t2

Sheet

mm

40.00

mm2

10498.80

mm

2

45.94

mm

2

127.60

The required minimum strength to be provided by the combined load carrying elements through each load - carrying path. W=

(A-A1)SV

A= (d+2tn) tr F A1= Max.of

{

(d- 2tn)(t-trF) 2t(t-trF)

}

A1= W=

127.60 (A-A1)SV

144087

Strength of load carrying elements in path number 1, As per Fig PW -16 (c) (1) 16 Internal fillet weld in shear = 1/2  WL2(d+2tn) (factor in PW-15.2=0.49) x SV x fr1

kg

56237

kg

120042

17 Groove welds in tension = 1/2 t2 x (d+2tn) (factor in PW-15.2=0.74) x Sv x fr1 18 16+17

176280

19 18 >15

HENCE SATISFACTORY

Strength of load carrying elements in path number 3, As per Fig PW -16 (c) (2) 20 External fillet weld in shear = 1/2  WL1 (d+2tn) (factor in PW-15.2=0.49) x SV x fr1

kg

47692

kg

120042

21 Groove welds in tension = 1/2 t2 x (d+2tn) (factor in PW-15.2=0.74) x Sv x fr1 22 20+21

167735

23 22 > 15

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

11.0

EQPT.

Rev.

00

GBE/1750/009

The minimum required strength of weld ( As per PG - 37 ) UNIT

DATA FEED WATER HEATER INLET / OUTLET STUB SLEEVE

01 Item 02 Drg. No.

10-10-01-3063

03 Var No./Item No.

05/02,06/02

04 Material specification

SA 105

05 d1=

O.D of Nozzle

mm

265

06 tn=

Nominal thickness of nozzle

mm

46.85

07 d=

Diameter of finished opening

mm

171.30

08 tr=

Required thickness of header [ E=1]

mm

53.84

09 t=

Actual Thickness of shell

mm

55

10 Sn=

Max. allowable stress for nozzle

kg/mm²

13.24

11 Sv=

Max. allowable stress for header

kg/mm²

13.89

12 fr1= Sn/Sv

0.95

13 Ff=

Factor

1.00

14

Weld leg

mm

WL1

39.00

WL2

30.00

Weld leg

15

60

MFR'S SERIAL NO.

STEAM DRUM

Sl DESCRIPTION No

t2

Sheet

mm

30.00

mm2

14267.60

mm

2

90.02

mm

2

127.60

The required minimum strength to be provided by the combined load carrying elements through each load - carrying path. W=

(A-A1)SV

A= (d+2tn) tr F A1= Max.of

{

(d- 2tn)(t-trF) 2t(t-trF)

}

A1= W=

127.60 (A-A1)SV

196447

Strength of load carrying elements in path number 1, As per Fig PW -16 (c) (1) 16 Internal fillet weld in shear = 1/2  WL2(d+2tn) (factor in PW-15.2=0.49) x SV x fr1

kg

81016

kg

122351

17 Groove welds in tension = 1/2 t2 x (d+2tn) (factor in PW-15.2=0.74) x Sv x fr1 18 16+17

203367

19 18 >15

HENCE SATISFACTORY

Strength of load carrying elements in path number 3, As per Fig PW -16 (c) (2) 20 External fillet weld in shear = 1/2  WL1 (d+2tn) (factor in PW-15.2=0.49) x SV x fr1

kg

105321

kg

122351

21 Groove welds in tension = 1/2 t2 x (d+2tn) (factor in PW-15.2=0.74) x Sv x fr1 22 20+21

227672

23 22 > 15

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

11.0

EQPT.

Rev.

00

GBE/1750/009

The minimum required strength of weld ( As per PG - 37 ) UNIT

01 Item

DATA SAFETY VALVE STUB

02 Drg. No.

10-10-01-3063

03 Var No./Item No.

09/01

04 Material specification

SA 105

05 d1=

O.D of Nozzle

mm

110

06 tn=

Nominal thickness of nozzle

mm

23.25

07 d=

Diameter of finished opening

mm

63.50

08 tr=

Required thickness of header [ E=1]

mm

53.84

09 t=

Actual Thickness of shell

mm

61

10 Sn=

Max. allowable stress for nozzle

kg/mm²

13.24

11 Sv=

Max. allowable stress for header

kg/mm²

13.89

12 fr1= Sn/Sv

0.95

13 Ff=

Factor

1.00

14

Weld leg

mm

WL1

26.50

WL2

26.50

Weld leg

15

61

MFR'S SERIAL NO.

STEAM DRUM

Sl DESCRIPTION No

t2

Sheet

mm

30.00

mm2

5922.40

mm

2

121.72

mm

2

873.52

The required minimum strength to be provided by the combined load carrying elements through each load - carrying path. W=

(A-A1)SV

A= (d+2tn) tr F A1= Max.of

{

(d- 2tn)(t-trF) 2t(t-trF)

}

A1= W=

873.52 (A-A1)SV

70144

Strength of load carrying elements in path number 1, As per Fig PW -16 (c) (1) 16 Internal fillet weld in shear = 1/2  WL2(d+2tn) (factor in PW-15.2=0.49) x SV x fr1

kg

29706

kg

50787

17 Groove welds in tension = 1/2 t2 x (d+2tn) (factor in PW-15.2=0.74) x Sv x fr1 18 16+17

80493

19 18 >15

HENCE SATISFACTORY

Strength of load carrying elements in path number 3, As per Fig PW -16 (c) (2) 20 External fillet weld in shear = 1/2  WL1 (d+2tn) (factor in PW-15.2=0.49) x SV x fr1

kg

29706

kg

50787

21 Groove welds in tension = 1/2 t2 x (d+2tn) (factor in PW-15.2=0.74) x Sv x fr1 22 20+21

80493

23 22 > 15

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

11.0

EQPT.

Rev.

00

GBE/1750/009

The minimum required strength of weld ( As per PG - 37 ) UNIT

01 Item

DATA LEVEL ELEMENT STUB SLEEVE (UPPER)

02 Drg. No.

10-10-01-3064

03 Var No./Item No.

10/02

04 Material specification

SA 105

05 d1=

O.D of Nozzle

mm

66

06 tn=

Nominal thickness of nozzle

mm

14.00

07 d=

Diameter of finished opening

mm

38.00

08 tr=

Required thickness of header [ E=1]

mm

53.84

09 t=

Actual Thickness of shell

mm

55

10 Sn=

Max. allowable stress for nozzle

kg/mm²

13.24

11 Sv=

Max. allowable stress for header

kg/mm²

13.89

12 fr1= Sn/Sv

0.95

13 Ff=

Factor

1.00

14

Weld leg

mm

WL1

30.00

WL2

30.00

Weld leg

15

62

MFR'S SERIAL NO.

STEAM DRUM

Sl DESCRIPTION No

t2

Sheet

mm

30.00

mm2

3553.44

mm

2

11.60

mm

2

127.60

The required minimum strength to be provided by the combined load carrying elements through each load - carrying path. W=

(A-A1)SV

A= (d+2tn) tr F A1= Max.of

{

(d- 2tn)(t-trF) 2t(t-trF)

}

A1= W=

127.60 (A-A1)SV

47595

Strength of load carrying elements in path number 1, As per Fig PW -16 (c) (1) 16 Internal fillet weld in shear = 1/2  WL2(d+2tn) (factor in PW-15.2=0.49) x SV x fr1

kg

20178

kg

30472

17 Groove welds in tension = 1/2 t2 x (d+2tn) (factor in PW-15.2=0.74) x Sv x fr1 18 16+17

50650

19 18 >15

HENCE SATISFACTORY

Strength of load carrying elements in path number 3, As per Fig PW -16 (c) (2) 20 External fillet weld in shear = 1/2  WL1 (d+2tn) (factor in PW-15.2=0.49) x SV x fr1

kg

20178

kg

30472

21 Groove welds in tension = 1/2 t2 x (d+2tn) (factor in PW-15.2=0.74) x Sv x fr1 22 20+21

50650

23 22 > 15

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

11.0

EQPT.

Rev.

00

GBE/1750/009

The minimum required strength of weld ( As per PG - 37 ) UNIT

01 Item

DATA LEVEL ELEMENT STUB SLEEVE (LOWER)

02 Drg. No.

10-10-01-3064

03 Var No./Item No.

11/02

04 Material specification

SA 105

05 d1=

O.D of Nozzle

mm

66

06 tn=

Nominal thickness of nozzle

mm

14.00

07 d=

Diameter of finished opening

mm

38.00

08 tr=

Required thickness of header [ E=1]

mm

53.84

09 t=

Actual Thickness of shell

mm

55

10 Sn=

Max. allowable stress for nozzle

kg/mm²

13.24

11 Sv=

Max. allowable stress for header

kg/mm²

13.89

12 fr1= Sn/Sv

0.95

13 Ff=

Factor

1.00

14

Weld leg

mm

WL1

30.00

WL2

30.00

Weld leg

15

63

MFR'S SERIAL NO.

STEAM DRUM

Sl DESCRIPTION No

t2

Sheet

mm

30.00

mm2

3553.44

mm

2

11.60

mm

2

127.60

The required minimum strength to be provided by the combined load carrying elements through each load - carrying path. W=

(A-A1)SV

A= (d+2tn) tr F A1= Max.of

{

(d- 2tn)(t-trF) 2t(t-trF)

}

A1= W=

127.60 (A-A1)SV

47595

Strength of load carrying elements in path number 1, As per Fig PW -16 (c) (1) 16 Internal fillet weld in shear = 1/2  WL2(d+2tn) (factor in PW-15.2=0.49) x SV x fr1

kg

20178

kg

30472

17 Groove welds in tension = 1/2 t2 x (d+2tn) (factor in PW-15.2=0.74) x Sv x fr1 18 16+17

50650

19 18 >15

HENCE SATISFACTORY

Strength of load carrying elements in path number 3, As per Fig PW -16 (c) (2) 20 External fillet weld in shear = 1/2  WL1 (d+2tn) (factor in PW-15.2=0.49) x SV x fr1

kg

20178

kg

30472

21 Groove welds in tension = 1/2 t2 x (d+2tn) (factor in PW-15.2=0.74) x Sv x fr1 22 20+21

50650

23 22 > 15

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

11.0

EQPT.

Rev.

00

GBE/1750/009

The minimum required strength of weld ( As per PG - 37 ) UNIT

01 Item

DATA BLOW DOWN STUB SLEEVE

02 Drg. No.

10-10-01-3064

03 Var No./Item No.

12/02

04 Material specification

SA 105

05 d1=

O.D of Nozzle

mm

93

06 tn=

Nominal thickness of nozzle

mm

20.00

07 d=

Diameter of finished opening

mm

53.00

08 tr=

Required thickness of header [ E=1]

mm

53.84

09 t=

Actual Thickness of shell

mm

55

10 Sn=

Max. allowable stress for nozzle

kg/mm²

13.24

11 Sv=

Max. allowable stress for header

kg/mm²

13.89

12 fr1= Sn/Sv

0.95

13 Ff=

Factor

1.00

14

Weld leg

mm

WL1

30.00

WL2

30.00

Weld leg

15

64

MFR'S SERIAL NO.

STEAM DRUM

Sl DESCRIPTION No

t2

Sheet

mm

30.00

mm2

5007.12

mm

2

15.08

mm

2

127.60

The required minimum strength to be provided by the combined load carrying elements through each load - carrying path. W=

(A-A1)SV

A= (d+2tn) tr F A1= Max.of

{

(d- 2tn)(t-trF) 2t(t-trF)

}

A1= W=

127.60 (A-A1)SV

67791

Strength of load carrying elements in path number 1, As per Fig PW -16 (c) (1) 16 Internal fillet weld in shear = 1/2  WL2(d+2tn) (factor in PW-15.2=0.49) x SV x fr1

kg

28432

kg

42938

17 Groove welds in tension = 1/2 t2 x (d+2tn) (factor in PW-15.2=0.74) x Sv x fr1 18 16+17

71370

19 18 >15

HENCE SATISFACTORY

Strength of load carrying elements in path number 3, As per Fig PW -16 (c) (2) 20 External fillet weld in shear = 1/2  WL1 (d+2tn) (factor in PW-15.2=0.49) x SV x fr1

kg

28432

kg

42938

21 Groove welds in tension = 1/2 t2 x (d+2tn) (factor in PW-15.2=0.74) x Sv x fr1 22 20+21

71370

23 22 > 15

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

11.0

EQPT.

Rev.

00

GBE/1750/009

The minimum required strength of weld ( As per PG - 37 ) UNIT

01 Item

DATA CHEMICAL DOSING STUB SLEEVE

02 Drg. No.

10-10-01-3064

03 Var No./Item No.

13/02

04 Material specification

SA 105

05 d1=

O.D of Nozzle

mm

66

06 tn=

Nominal thickness of nozzle

mm

14.00

07 d=

Diameter of finished opening

mm

38.00

08 tr=

Required thickness of header [ E=1]

mm

53.84

09 t=

Actual Thickness of shell

mm

55

10 Sn=

Max. allowable stress for nozzle

kg/mm²

13.24

11 Sv=

Max. allowable stress for header

kg/mm²

13.89

12 fr1= Sn/Sv

0.95

13 Ff=

Factor

1.00

14

Weld leg

mm

WL1

30.00

WL2

30.00

Weld leg

15

65

MFR'S SERIAL NO.

STEAM DRUM

Sl DESCRIPTION No

t2

Sheet

mm

30.00

mm2

3553.44

mm

2

11.60

mm

2

127.60

The required minimum strength to be provided by the combined load carrying elements through each load - carrying path. W=

(A-A1)SV

A= (d+2tn) tr F A1= Max.of

{

(d- 2tn)(t-trF) 2t(t-trF)

}

A1= W=

127.60 (A-A1)SV

47595

Strength of load carrying elements in path number 1, As per Fig PW -16 (c) (1) 16 Internal fillet weld in shear = 1/2  WL2(d+2tn) (factor in PW-15.2=0.49) x SV x fr1

kg

20178

kg

30472

17 Groove welds in tension = 1/2 t2 x (d+2tn) (factor in PW-15.2=0.74) x Sv x fr1 18 16+17

50650

19 18 >15

HENCE SATISFACTORY

Strength of load carrying elements in path number 3, As per Fig PW -16 (c) (2) 20 External fillet weld in shear = 1/2  WL1 (d+2tn) (factor in PW-15.2=0.49) x SV x fr1

kg

20178

kg

30472

21 Groove welds in tension = 1/2 t2 x (d+2tn) (factor in PW-15.2=0.74) x Sv x fr1 22 20+21

50650

23 22 > 15

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

11.0

EQPT.

Rev.

00

GBE/1750/009

The minimum required strength of weld ( As per PG - 37 ) UNIT

01 Item

DATA LG STUB SLEEVE (UPPER)

02 Drg. No.

10-10-01-3064

03 Var No./Item No.

14/02

04 Material specification

SA 105

05 d1=

O.D of Nozzle

mm

66

06 tn=

Nominal thickness of nozzle

mm

14.00

07 d=

Diameter of finished opening

mm

38.00

08 tr=

Required thickness of header [ E=1]

mm

53.84

09 t=

Actual Thickness of shell

mm

61

10 Sn=

Max. allowable stress for nozzle

kg/mm²

13.24

11 Sv=

Max. allowable stress for header

kg/mm²

13.89

12 fr1= Sn/Sv

0.95

13 Ff=

Factor

1.00

14

Weld leg

mm

WL1

25.00

WL2

15.00

Weld leg

15

66

MFR'S SERIAL NO.

STEAM DRUM

Sl DESCRIPTION No

t2

Sheet

mm

35.00

mm2

3553.44

mm

2

71.60

mm

2

873.52

The required minimum strength to be provided by the combined load carrying elements through each load - carrying path. W=

(A-A1)SV

A= (d+2tn) tr F A1= Max.of

{

(d- 2tn)(t-trF) 2t(t-trF)

}

A1= W=

873.52 (A-A1)SV

37232

Strength of load carrying elements in path number 1, As per Fig PW -16 (c) (1) 16 Internal fillet weld in shear = 1/2  WL2(d+2tn) (factor in PW-15.2=0.49) x SV x fr1

kg

10089

kg

35551

17 Groove welds in tension = 1/2 t2 x (d+2tn) (factor in PW-15.2=0.74) x Sv x fr1 18 16+17

45640

19 18 >15

HENCE SATISFACTORY

Strength of load carrying elements in path number 3, As per Fig PW -16 (c) (2) 20 External fillet weld in shear = 1/2  WL1 (d+2tn) (factor in PW-15.2=0.49) x SV x fr1

kg

16815

kg

35551

21 Groove welds in tension = 1/2 t2 x (d+2tn) (factor in PW-15.2=0.74) x Sv x fr1 22 20+21

52366

23 22 > 15

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

11.0

EQPT.

Rev.

00

GBE/1750/009

The minimum required strength of weld ( As per PG - 37 ) UNIT

01 Item

DATA LG STUB SLEEVE (LOWER)

02 Drg. No.

10-10-01-3064

03 Var No./Item No.

15/02

04 Material specification

SA 105

05 d1=

O.D of Nozzle

mm

66

06 tn=

Nominal thickness of nozzle

mm

14.0

07 d=

Diameter of finished opening

mm

38.00

08 tr=

Required thickness of header [ E=1]

mm

53.84

09 t=

Actual Thickness of shell

mm

61

10 Sn=

Max. allowable stress for nozzle

kg/mm²

13.24

11 Sv=

Max. allowable stress for header

kg/mm²

13.89

12 fr1= Sn/Sv

0.95

13 Ff=

Factor

1.00

14

Weld leg

mm

WL1

25.00

WL2

15.00

Weld leg

15

67

MFR'S SERIAL NO.

STEAM DRUM

Sl DESCRIPTION No

t2

Sheet

mm

35.00

mm2

3553.44

mm

2

71.60

mm

2

873.52

The required minimum strength to be provided by the combined load carrying elements through each load - carrying path. W=

(A-A1)SV

A= (d+2tn) tr F A1= Max.of

{

(d- 2tn)(t-trF) 2t(t-trF)

}

A1= W=

873.52 (A-A1)SV

37232

Strength of load carrying elements in path number 1, As per Fig PW -16 (c) (1) 16 Internal fillet weld in shear = 1/2  WL2(d+2tn) (factor in PW-15.2=0.49) x SV x fr1

kg

10089

kg

35551

17 Groove welds in tension = 1/2 t2 x (d+2tn) (factor in PW-15.2=0.74) x Sv x fr1 18 16+17

45640

19 18 >15

HENCE SATISFACTORY

Strength of load carrying elements in path number 3, As per Fig PW -16 (c) (2) 20 External fillet weld in shear = 1/2  WL1 (d+2tn) (factor in PW-15.2=0.49) x SV x fr1

kg

16815

kg

35551

21 Groove welds in tension = 1/2 t2 x (d+2tn) (factor in PW-15.2=0.74) x Sv x fr1 22 20+21

52366

23 22 > 15

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT :

SHELL

CALCULATION OF THICKNESS FOR WELDED COVER Sl No

DESCRIPTION

UNIT

01 Item

Rev.

00

MFR'S GBE/1750/009 SERIAL NO.

(HYDROSTATIC TEST)

DATA

10-10-01-3063

02 Ph = Hydrostatic Pressure

kg/cm²(g)

03 T = Design temperature

o

C

04 Cover Plate Material

118.5 21 IS 2062

05 d = Internal Diameter

mm

360.56

06 Nominal Cover Plate Thickness

mm

60.00

07 C = Constant (As per Fig.No.PG-31( f )) 08 S = Maximum allowable stress for cover Plate

0.2 kg/cm²

1400

mm

46.91

mm

46.91

Minimum thickness required

t = d

√

CP S

10 Required thickness = t 11

68

DOWNCOMER STUB

Drg No.

09

Sheet

Provided Thickness > Required Thickness

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

SHELL

EQPT :

CALCULATION OF THICKNESS FOR WELDED COVER Sl No

DESCRIPTION

UNIT

01 Item

Rev.

00

MFR'S GBE/1750/009 SERIAL NO.

(HYDROSTATIC TEST)

DATA

10-10-01-3063

02 Ph = Hydrostatic Pressure

kg/cm²(g)

03 T = Design temperature

o

C

04 Cover Plate Material

118.5 21 IS 2062

05 d = Internal Diameter

mm

250.88

06 Nominal Cover Plate Thickness

mm

40.00

07 C = Constant (As per Fig.No.PG-31( f )) 08 S = Maximum allowable stress for cover Plate

0.2 kg/cm²

1400

mm

32.64

mm

32.64

Minimum thickness required

t = d

√

CP S

10 Required thickness = t 11

69

SATURATED STEAM STUB

Drg No.

09

Sheet

Provided Thickness > Required Thickness

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

SHELL

EQPT :

CALCULATION OF THICKNESS FOR WELDED COVER Sl No

DESCRIPTION

UNIT

01 Item

MFR'S SERIAL NO.

70

Rev.

00

GBE/1750/ 009

(HYDROSTATIC TEST)

DATA RISER STUB

Drg No.

10-10-01-3063

02 Ph = Hydrostatic Pressure

kg/cm²(g)

03 T = Design temperature

o

C

04 Cover Plate Material

118.5 21 IS 2062

05 d = Internal Diameter

mm

201.06

06 Nominal Cover Plate Thickness

mm

35.00

07 C = Constant (As per Fig.No.PG-31( f ))

0.2

08 S = Maximum allowable stress for cover Plate

kg/cm²

09

mm

Minimum thickness required

t = d

√

Provided Thickness > Required Thickness

1400 26.16

CP S

10 Required thickness = t 11

Sheet

mm

26.16 HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT :

DISHED END

Sheet

71

Rev.

00

MFR'S GBE/1750/ SERIAL NO. 009

CALCULATION OF THICKNESS FOR WELDED COVER (HYDROSTATIC TEST) Sl No

DESCRIPTION

UNIT

01 Item

DATA FEED WATER STUB

Drg No.

10-10-01-3063

02 Ph = Hydrostatic Pressure

kg/cm²(g)

03 T = Design temperature

o

C

04 Cover Plate Material

118.5 21 IS 2062

05 d = Internal Diameter

mm

103.76

06 Nominal Cover Plate Thickness

mm

25.00

07 C = Constant (As per Fig.No.PG-31( f ))

0.2

08 S = Maximum allowable stress for cover Plate

kg/cm²

09

mm

Minimum thickness required

t = d

√

11

13.50

CP S

10 Required thickness = t Provided Thickness > Required Thickness

1400

mm

13.50 HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT :

DISHED END

Sheet

72

Rev.

00

MFR'S GBE/1750/ SERIAL NO. 009

CALCULATION OF THICKNESS FOR WELDED COVER (HYDROSTATIC TEST) Sl No

DESCRIPTION

UNIT

DATA FEED WATER HEATER INLET & OUTLET

01 Item Drg No.

10-10-01-3063

02 Ph = Hydrostatic Pressure

kg/cm²(g)

03 T = Design temperature

o

C

04 Cover Plate Material

118.5 21 IS 2062

05 d = Internal Diameter

mm

155.86

06 Nominal Cover Plate Thickness

mm

25.00

07 C = Constant (As per Fig.No.PG-31( f ))

0.2

08 S = Maximum allowable stress for cover Plate

kg/cm²

09

mm

Minimum thickness required

t = d

√

11

20.28

CP S

10 Required thickness = t Provided Thickness > Required Thickness

1400

mm

20.28 HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT :

SHELL

Sheet

73

Rev.

00

MFR'S GBE/1750/ SERIAL NO. 009

CALCULATION OF THICKNESS FOR WELDED COVER (HYDROSTATIC TEST) Sl No

DESCRIPTION

UNIT

01 Item

DATA PG,PT & VENT STUBS

Drg No.

10-10-01-3063

02 Ph = Hydrostatic Pressure

kg/cm²(g)

03 T = Design temperature

o

C

04 Cover Plate Material

118.5 21 IS 2062

05 d = Internal Diameter

mm

24.30

06 Nominal Cover Plate Thickness

mm

8.00

07 C = Constant (As per Fig.No.PG-31( f ))

0.2

08 S = Maximum allowable stress for cover Plate

kg/cm²

09

mm

Minimum thickness required

t = d

√

11

3.16

CP S

10 Required thickness = t Provided Thickness > Required Thickness

1400

mm

3.16 HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT :

SHELL

Sheet

74

Rev.

00

MFR'S GBE/1750/ SERIAL NO. 009

CALCULATION OF THICKNESS FOR WELDED COVER (HYDROSTATIC TEST) Sl No

DESCRIPTION

UNIT

01 Item

DATA SAFETY VALVE STUB

Drg No.

10-10-01-3063

02 Ph = Hydrostatic Pressure

kg/cm²(g)

03 T = Design temperature

o

C

04 Cover Plate Material

118.5 21 IS 2062

05 d = Internal Diameter

mm

69.90

06 Nominal Cover Plate Thickness

mm

16

07 C = Constant (As per Fig.No.PG-31( f ))

0.2

08 S = Maximum allowable stress for cover Plate

kg/cm²

09

mm

Minimum thickness required

t = d

√

11

9.09

CP S

10 Required thickness = t Provided Thickness > Required Thickness

1400

mm

9.09 HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT :

DISHED END

Sheet

75

Rev.

00

MFR'S GBE/1750/ SERIAL NO. 009

CALCULATION OF THICKNESS FOR WELDED COVER (HYDROSTATIC TEST) Sl No

DESCRIPTION

UNIT

01 Item

DATA LE,LG & CHEMICAL DOSING STUB

Drg No.

10-10-01-3064

02 Ph = Hydrostatic Pressure

kg/cm²(g)

03 T = Design temperature

o

C

04 Cover Plate Material

118.5 21 IS 2062

05 d = Internal Diameter

mm

25.44

06 Nominal Cover Plate Thickness

mm

8.00

07 C = Constant (As per Fig.No.PG-31( f ))

0.2

08 S = Maximum allowable stress for cover Plate

kg/cm²

09

mm

Minimum thickness required

t = d

√

11

3.31

CP S

10 Required thickness = t Provided Thickness > Required Thickness

1400

mm

3.31 HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt.Ltd

EQPT :

DISHED END

Sheet

76

Rev.

00

MFR'S GBE/1750/ SERIAL NO. 009

CALCULATION OF THICKNESS FOR WELDED COVER (HYDROSTATIC TEST) Sl No

DESCRIPTION

UNIT

01 Item

DATA BLOW DOWN STUB

Drg No.

10-10-01-3064

02 Ph = Hydrostatic Pressure

kg/cm²(g)

03 T = Design temperature

o

C

04 Cover Plate Material

118.5 21 IS 2062

05 d = Internal Diameter

mm

39.40

06 Nominal Cover Plate Thickness

mm

10.00

07 C = Constant (As per Fig.No.PG-31( f ))

0.2

08 S = Maximum allowable stress for cover Plate

kg/cm²

09

mm

Minimum thickness required

t = d

√

11

5.13

CP S

10 Required thickness = t Provided Thickness > Required Thickness

1400

mm

5.13 HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

15.

EQPT:

Sheet

77

Rev.

00

MFR'S SERIAL NO.

SHELL

GBE/1750/009

Calculation of Minimum Required thickness for the Header End Plate As per PG-31.3.2

Sl No

DESCRIPTION

UNIT

(a) Drg No.

SPARE 10-10-01-3063

Var No./Item No.

08/02

(b) Material specification

SA 105

(c) d = Inside diameter of the Header

mm

53.94

(d) Provided Thickness of End plate

mm

16.00

kg/cm².g

79

C

294

kg/cm²

1324.00

(a) ts = Actual thickness of header

mm

19.53

(b) tr = Minimum required thickness of seamless header

mm

5.16

(e) P = Max.Allowable working pressure (f) Design temperature

o

(g) S = Allowable stress value at Design temperature 2.

3.

Header Data

C = Calculation factor as per Fig PG-31 (g)

(a) m = tr / ts

0.26

(b) 0.33 m

0.09

(c) C = 0.33 m with a minimum of 0.2

0.20

(d) Selected 'C'

0.20

(e) Minimum required thickness of End plate CxP

mm

5.89

(g) Required Thickness =

mm

5.89

4.

Provided Thickness =

mm

16.00

5

Provided Thickness > Required thicknes

6

Minimum weld size tw = 2 tr with minimum of 1.25 ts

=dx

------------------S

HENCE SATISFACTORY

(a) 2 tr

mm

10.32

(b) 1.25 ts

mm

24.41

(c) tw

mm

10.32

(d) Provided Thickness

mm

16.00

7

Provided Thickness > Required thicknes

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

16.

EQPT:

Sheet

78

Rev.

00

MFR'S SERIAL NO.

SHELL

GBE/1750/009

Calculation of stress during Hydrostatic test for STUB End Plate As per PG-31.3.2

Description

SPARE

Drg No.

10-10-01-3063

Var No./Item No.

08/02

01

Ph = Hydrostatic test pressure

02

t = Minimum thickness available

03 d =

Inside Diameter of the Header

04

C = Calculation factor as per Fig PG-31 (g)

05

Y = Minimum yield strength at Ambient temp.

kg/cm²

118.5

mm

16.00

mm

53.94

0.20

kg/cm²

2651.3

06 Stress during hydrostatic test

S= 07

08

d 2 (CPh )

269

2

(t −CA )

As per PG-99, Maximum allowable stress (0.9 x Y)

(07) > (06)

kg/cm²

kg/cm²

2386

HENCE SATISFACTORY

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

EQPT.

STEAM DRUM

Sheet

79

Rev.

00

MFR'S SERIAL NO.

GBE/1750/009

Static head calculation 01

Description

Unit

STEAM DRUM

01. Upper elevation ( DRUM NORMAL LEVEL )

mm

16050

02. Lower elevation ( DRUM BOTTOM )

mm

15085.5

03. Effective Static Head

mm

964.50

04. Static head per meter

kg/cm²

0.100

05. Static head for 0.9645 m =

kg/cm²

0.096

STRESS CALCULATIONS

GB ENGINEERING Enterprises Pvt. Ltd.

10.0

EQPT.

Sheet

80

Rev.

00

MFR'S GBE/1750/009 SERIAL NO.

STEAM DRUM

WEIGHT & LOADING CALCULATION (As per PG-22.1)

(01)

weight of steam drum with

:

60000

kgs

:

8400

mm

attachments & nozzle

(02)

Length to which the above loads are distributed

(03)

Uniformly distributed load acting on the drum

: 7.14

RA

C

7.14

Kg/mm

Kg/mm

'RB

M

1700

5000 A

B

D

1700 `

Since loading is symmetric, reaction at supports (04)

TAKING MOMENTS ABOUT "A" RB

x 5000 = 7.14 x 8400 x (5000/2) RB

= 29988 kgs

Therefore (05)

= 29988 kgs RA BENDING MOMENT Let x be the distance from C where S.F.changes sign and bending moment will be maximum 7.14 x - RA = 0 7.14 x - 29988 x = 4200 mm

=

0

STRESS CALCULATIONS

GB ENGINEERING Enterprises Pvt. Ltd.

EQPT.

MM =

MM = MM =

-7.14

+ RA

x2 /2

-7.14

(x-a) (x-a)

(4200) + 29988 (4200-1700) 2 11995200 kg-mm 2

MM = Where a = Distance between support centre line and the Weld line (06)

Section Modulus of the shell

Z

: : :

1700 mm

 32

D

:

1955.0

mm

b) Inside diameter of the shell

d

:

1829.0

mm



(07)

Stress induced

f

:

171604364.1

:

M/Z

:

0.070 0.07 7.00

mm3

Kg/mm2 Kg/cm2

10% of the allowable stress of the Material :

(09)

32

(19554 - 18294) 1955

:

: : (08)

(19554-18294) 1955

Where a) Outside diameter of the shell

Z

81

Rev.

00

MFR'S GBE/1750/009 SERIAL NO.

STEAM DRUM

Max. Bending Moment (at midspan) MM = -7.14 X x X x/2 + RA

Sheet

0.1x1389.3 = 138.9 = 139.1 Kg/cm2 Stresses imposed by effects other than working pressure & static head are less than 10% of the allowable stress of the material. Hence loading due to above need not be considered for calculation of thickness as per PG-22.1

DESIGN CALCULATIONS SHEET GB ENGINEERING Enterprises Pvt. Ltd.

EQPT:

STEAM DRUM

Sheet

82

Rev.

00

MFR'S SERIAL NO.

GBE/1750/009

EXTERNAL LOADING CALCULATIONS Sl No

DESCRIPTION

UNIT

DATA

01 Item

STEAM DRUM DOWNCOMER

02 Drg.No

REF SKETCH (SHEET No.83)

03 D = Downcomer size

mm

406.4

04 t = Thickness

mm

26.19

05 d = Internal dia of the downcomer

354.02

06 No of downcomers

2

07 L = Span length

4550

08 Material specification 09

SA 106 Gr.B

Total load (Including steam drum attachments and water)

10 P = Load per downcmer

ton

60.000

ton

30.00

11 No of supports*

4

12 A = Area of pipe

=

π / 4 x ( D -d )

mm2

31283

13 I = Moment of ineratia

=

 / 64 x {D4-d4}

mm4

567965276.549677

14 r = Radius of gyration

=

mm

134.74

15 Pa = Allowable load

=

ton

5686.15

2

√I/A x E x A

2

(L/r)2 16 Here

Pa > P

Hence satisfacotory

* - SUPOORT LOCATION ARE SHOWN IN ENCLOSED SKETCH

STRESS CALCULATIONS GB ENGINEERING Enterprises Pvt. Ltd.

EQPT.

STEAM DRUM

Sheet

84

Rev.

00

MFR'S SERIAL NO.

GBE/1750/009

SAFETY VALVE REQUIRMENT AS PER ASME SECTION-1 PG-67. Sl No

DATA

01. Boiler Capacity

=

75 TPH

02. Total Heating Surface Area

=

4695 m²

03. No.of Safety Valves in Steam Drum Sl Description No

=

2 Nos.

Code

Code Discription

No.of Safety Valves in Steam Drum

PG 67.1

Condition to provide additional valves 01.Heating surface area exceeds 500 sq.feet (47 m²) 02.Design Steam Generating Capacity of Bolier exceeds 4000 lb/hr (1800 kg/hr)

(A) Heating Surface Area of this Boiler (Ref Drg.No.10-01-03-3004) Sl Part No 01. Economiser

Units m²

2329

02. Evaporator-1

m²

973

03. Evaporator-2

m²

973

04. Superheater module

m²

155

05. Primary Superheater

m²

130

06. Secondary Superheater

m²

135

m²

4695

Total heating surface area

The total heating surface area of this bolier is ( 4695 m² ) greater than 47 m². So Two Safety valves provided in this boiler steam drum.

Steam Generating Capacity of Boiler

(B) (Ref Deg.No.10-01-03-3004)

kg/hr

75,000

Design Steam Generating Capacity of this bolier is ( 75000 kg/hr ) greater than 1800 kg/hr. So Two Safety valves provided in this boiler steam drum.