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Description Value Unit

Component Name DIFFUSER PIPE -

Location HHP STEAM VENT SILENCER -

TAG PRAE-J-1435-F -

Design Pressure 10.689 MPa

Design Temperature 540 oC

550 NPS x 95 THK. -

559 x 95 OD x Nominal thickness

Material SA387 Gr.22 CL.2 -

Ligament efficiency 51 %

Corrosion allowance 2 mm

Mill tolerance 0 %

Allowable stress 52.66 MPa

Available thickness 93.00 mm

Condition 1 PASS -

Condition 2 FAILED APPENDIX 1, 1-2 APPLICABLE

Condition 3 PASS -

Required thickness based on circumferential stress 91.77 mm

Required thickness based on longitudinal stress 43.11 mm

Conclusion

DIFFUSER PIPE CALCULATION

According to ASME Section VIII Division I Edition 2010 Addenda 2011a -UG 27

Size

SAFE

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Description Value Unit

Component Name PIPE CAP -

Location HHP STEAM VENT SILENCER -

TAG PRAE-J-1435-F -

Design Pressure 10.689 MPa

Design Temperature 540 oC

550 NPS x 60 THK. Formed - 2:1 SEMI ELLIPSOIDAL

559 x 60 OD x Nominal thickness

Material SA387 Gr.22 CL.2 -

Joint efficiency 100 %

Corrosion allowance 2 mm

Mill tolerance 0 %

Thinning allowance 15 %

Allowable stress 52.66 MPa

Crown radius 395.10 mm

Knuckle radius 74.63 mm

Available thickness 49.00 mm

Condition PASS -

Required thickness 45.48 mm

Conclusion SAFE

PIPE CAP CALCULATION

According to ASME Section VIII Division I Edition 2010 Addenda 2011a -UG 32

Size

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Description Value Unit

Component Name SILENCER SHELL -

Location HHP STEAM VENT SILENCER -

TAG PRAE-J-1435-F -

Design Pressure 0.147 MPa

Design Temperature 540 oC

Size 3600 x 10 THK OD x Nominal thickness

Material SA387 Gr.22 CL.2 -

Joint efficiency 85 %

Corrosion allowance 2 mm

Mill tolerance 0 %

Allowable stress 52.66 MPa

Available thickness 8.00 mm

Condition 1 PASS -

Condition 2 PASS -

Condition 3 PASS -

Required thickness based on circumferential stress 5.89 mm

Required thickness based on longitudinal stress 2.94 mm

Conclusion

SILENCER SHELL CALCULATION

According to ASME Section VIII Division I Edition 2010 Addenda 2011a - UG 27

SAFE

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Description Value Unit

Component Name SILENCER DISHED HEAD -

Location HHP STEAM VENT SILENCER -

TAG PRAE-J-1435-F -

Design Pressure 0.147 MPa

Design Temperature 540 oC

Size 3600 x 12 THK OD x Nominal thickness

Material SA387 Gr.22 CL.2 -

Joint efficiency 100 %

Corrosion allowance 2 mm

Mill tolerance 0 %

Thinning allowance 15 %

Allowable stress 52.66 MPa

Crown radius 3218.40 mm

Knuckle radius 607.92 mm

Available thickness 8.20 mm

Condition PASS -

Required thickness 4.99 mm

Conclusion

Nozzle size 559 x 95 OD x Nominal thickness

Required thickness of nozzle 91.77 mm

Allowable stress of nozzle 52.66 MPa

Nozzle inside projection 500 mm

Pad plate provision YES -

Pad plate thickness 12 -

Pad plate width 200 -

Compensation area required 1842.26 mm2

compensation area available 5820.34 mm2

Conclusion SAFE

SILENCER DISHED HEAD CALCULATION

According to ASME Section VIII Division I Edition 2010 Addenda 2011a - UG 32 & UG 37

SAFE

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Description Value Unit

Component Name CONNECTING PIPE -

Location HHP STEAM VENT SILENCER -

TAG PRAE-J-1435-F -

Design Pressure 10.689 MPa

Design Temperature 540 oC

450 NPS x 53 THK. -

457 x 53 OD x Nominal thickness

Material SA387 Gr.22 CL.2 -

Joint efficiency 85 %

Corrosion allowance 2 mm

Mill tolerance 0 %

Allowable stress 52.66 MPa

Available thickness 51.00 mm

Condition 1 PASS -

Condition 2 PASS -

Condition 3 PASS -

Required thickness based on circumferential stress 48.92 mm

Required thickness based on longitudinal stress 20.00 mm

Conclusion

CONNECTING PIPE-I CALCULATION

SAFE

According to ASME Section VIII Division I Edition 2010 Addenda 2011a -UG 27

Size

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FLANGE SA182 F22 MATERIAL 2500# IS REQUIRED.

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Description Value Unit

Component Name CONNECTING PIPE -

Location HHP STEAM VENT SILENCER -

TAG PRAE-J-1435-F -

Design Pressure 10.689 MPa

Design Temperature 540 oC

500 NPS x 60 THK. -

508 x 60 OD x Nominal thickness

Material SA387 Gr.22 CL.2 -

Joint efficiency 85 %

Corrosion allowance 2 mm

Mill tolerance 0 %

Allowable stress 52.66 MPa

Available thickness 58.00 mm

Condition 1 PASS -

Condition 2 PASS -

Condition 3 PASS -

Required thickness based on circumferential stress 54.08 mm

Required thickness based on longitudinal stress 22.11 mm

Conclusion

CONNECTING PIPE-II CALCULATION

According to ASME Section VIII Division I Edition 2010 Addenda 2011a -UG 27

Size

SAFE

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Description Value Unit

Component Name DIFFUSER PIPE -

Location HHP STEAM VENT SILENCER -

TAG PRAE-J-1435-F -

Design Pressure 10.689 MPa

Design Temperature 540 oC

550 NPS x 53 THK. -

559 x 53 OD x Nominal thickness

Material SA387 Gr.91 CL.2 -

Ligament efficiency 51 %

Corrosion allowance 2 mm

Mill tolerance 0 %

Allowable stress 111 MPa

Available thickness 51.00 mm

Condition 1 PASS -

Condition 2 PASS -

Condition 3 PASS -

Required thickness based on circumferential stress 48.23 mm

Required thickness based on longitudinal stress 20.61 mm

Conclusion

DIFFUSER PIPE CALCULATION

According to ASME Section VIII Division I Edition 2010 Addenda 2011a -UG 27

Size

SAFE

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Description Value Unit

Component Name PIPE CAP -

Location HHP STEAM VENT SILENCER -

TAG PRAE-J-1435-F -

Design Pressure 10.689 MPa

Design Temperature 540 oC

550 NPS x 32 THK. Formed - 2:1 SEMI ELLIPSOIDAL

559 x 32 OD x Nominal thickness

Material SA387 Gr.91 CL.2 -

Joint efficiency 100 %

Corrosion allowance 2 mm

Mill tolerance 0 %

Thinning allowance 15 %

Allowable stress 111 MPa

Crown radius 445.50 mm

Knuckle radius 84.15 mm

Available thickness 25.20 mm

Condition PASS -

Required thickness 24.07 mm

Conclusion

Size

SAFE

PIPE CAP CALCULATION

According to ASME Section VIII Division I Edition 2010 Addenda 2011a -UG 32

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Description Value Unit

Component Name SILENCER SHELL -

Location HHP STEAM VENT SILENCER -

TAG PRAE-J-1435-F -

Design Pressure 0.147 MPa

Design Temperature 540 oC

Size 3600 x 6 THK OD x Nominal thickness

Material SA387 Gr.91 CL.2 -

Joint efficiency 85 %

Corrosion allowance 2 mm

Mill tolerance 0 %

Allowable stress 111 MPa

Available thickness 4.00 mm

Condition 1 PASS -

Condition 2 PASS -

Condition 3 PASS -

Required thickness based on circumferential stress 2.80 mm

Required thickness based on longitudinal stress 1.40 mm

Conclusion

SILENCER SHELL CALCULATION

According to ASME Section VIII Division I Edition 2010 Addenda 2011a - UG 27

SAFE

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Description Value Unit

Component Name SILENCER DISHED HEAD -

Location HHP STEAM VENT SILENCER -

TAG PRAE-J-1435-F -

Design Pressure 0.147 MPa

Design Temperature 540 oC

Size 3600 x 10 THK OD x Nominal thickness

Material SA387 Gr.91 CL.2 -

Joint efficiency 100 %

Corrosion allowance 2 mm

Mill tolerance 0 %

Thinning allowance 15 %

Allowable stress 111 MPa

Crown radius 3222.00 mm

Knuckle radius 608.6 mm

Available thickness 6.50 mm

Condition PASS -

Required thickness 2.37 mm

Conclusion

Nozzle size 559 x 53 OD x Nominal thickness

Required thickness of nozzle 48.23 mm

Allowable stress of nozzle 111 MPa

Nozzle inside projection 500 mm

Pad plate provision YES -

Pad plate thickness 10 -

Pad plate width 200 -

Compensation area required 1074.00 mm2

compensation area available 4185.67 mm2

Conclusion

SILENCER DISHED HEAD CALCULATION

According to ASME Section VIII Division I Edition 2010 Addenda 2011a - UG 32 & UG 37

SAFE

SAFE

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Description Value Unit

Component Name CONNECTING PIPE -

Location HHP STEAM VENT SILENCER -

TAG PRAE-J-1435-F -

Design Pressure 10.689 MPa

Design Temperature 540 oC

450 NPS x 28 THK. -

457 x 28 OD x Nominal thickness

Material SA387 Gr.91 CL.2 -

Joint efficiency 85 %

Corrosion allowance 2 mm

Mill tolerance 0 %

Allowable stress 111 MPa

Available thickness 26.00 mm

Condition 1 PASS -

Condition 2 PASS -

Condition 3 PASS -

Required thickness based on circumferential stress 24.37 mm

Required thickness based on longitudinal stress 11.11 mm

Conclusion SAFE

CONNECTING PIPE-I CALCULATION

According to ASME Section VIII Division I Edition 2010 Addenda 2011a -UG 27

Size

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FLANGE SA182 F91 MATERIAL 1500# IS REQUIRED.

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Description Value Unit

Component Name CONNECTING PIPE -

Location HHP STEAM VENT SILENCER -

TAG PRAE-J-1435-F -

Design Pressure 10.689 MPa

Design Temperature 540 oC

500 NPS x 30 THK. -

508 x 30 OD x Nominal thickness

Material SA387 Gr.91 CL.2 -

Joint efficiency 85 %

Corrosion allowance 2 mm

Mill tolerance 0 %

Allowable stress 111 MPa

Available thickness 28.00 mm

Condition 1 PASS -

Condition 2 PASS -

Condition 3 PASS -

Required thickness based on circumferential stress 27.23 mm

Required thickness based on longitudinal stress 12.41 mm

Conclusion

According to ASME Section VIII Division I Edition 2010 Addenda 2011a -UG 27

Size

SAFE

CONNECTING PIPE-II CALCULATION