8/16/2019 dnvosf101-120828210226-phpapp02

1/21

WALL THICKNESS CALCULATION

OFFSHORE PIPELINE

DNV-OS-F101

Scope: Systems in the petroleum and natural gas industries - submarine

Phases: Concept development, design, construction, operation

Pipeline Types: Rigid metallic pipe

Limited:

- Dimension: 15 < D/t2 < 45

PVE 1 Nguyn Minh Trung

8/16/2019 dnvosf101-120828210226-phpapp02

2/21

WALL THICKNESS CALCULATION OFFSHORE PIPELINE

DNV-OS-F101

Design Parameter

PressureContainment

(BurstingPressure)

SystemCollapse

PropagationBuckling

Combine Load Criteria

Load ControlCriteria

DisplacementControlCriteria

PVE 2 Nguyn Minh Trung

8/16/2019 dnvosf101-120828210226-phpapp02

3/21

WALL THICKNESS CALCULATION OFFSHORE PIPELINE

DNV-OS-F101

DesignParameter

Safety Class

Location Class Fluid type

IncidentalFactor

MaterialResistance

Factor

TemperatureDerating

PVE 3 Nguyn Minh Trung

8/16/2019 dnvosf101-120828210226-phpapp02

4/21

WALL THICKNESS CALCULATION OFFSHORE PIPELINE

DNV-OS-F101

1. Design Parameter

• Location Class

PVE 4 Nguyn Minh Trung

8/16/2019 dnvosf101-120828210226-phpapp02

5/21

WALL THICKNESS CALCULATION OFFSHORE PIPELINE

DNV-OS-F101

1. Design Parameter

• Fluid type

PVE 5 Nguyn Minh Trung

8/16/2019 dnvosf101-120828210226-phpapp02

6/21

WALL THICKNESS CALCULATION OFFSHORE PIPELINE

DNV-OS-F101

1. Design Parameter

• Safety Class

PVE 6 Nguyn Minh Trung

8/16/2019 dnvosf101-120828210226-phpapp02

7/21

WALL THICKNESS CALCULATION OFFSHORE PIPELINE

DNV-OS-F101

1. Design Parameter

• Incidental Factor ginc

PVE 7 Nguyn Minh Trung

8/16/2019 dnvosf101-120828210226-phpapp02

8/21

WALL THICKNESS CALCULATION OFFSHORE PIPELINE

DNV-OS-F101

1. Design Parameter

• Material Resistance Factor gm

PVE 8 Nguyn Minh Trung

8/16/2019 dnvosf101-120828210226-phpapp02

9/21

WALL THICKNESS CALCULATION OFFSHORE PIPELINE

DNV-OS-F101

1. Design Parameter

• Temperature Derating 

PVE 9 Nguyn Minh Trung

8/16/2019 dnvosf101-120828210226-phpapp02

10/21

WALL THICKNESS CALCULATION OFFSHORE PIPELINE

DNV-OS-F101

2. Pressure Containment (Bursting Pressure)

PVE 10 Nguyn Minh Trung

8/16/2019 dnvosf101-120828210226-phpapp02

11/21

WALL THICKNESS CALCULATION OFFSHORE PIPELINE

DNV-OS-F101

3. System Collapse

PVE 11 Nguyn Minh Trung

8/16/2019 dnvosf101-120828210226-phpapp02

12/21

WALL THICKNESS CALCULATION OFFSHORE PIPELINE

DNV-OS-F101

4. Propagation Buckling

PVE 12 Nguyn Minh Trung

8/16/2019 dnvosf101-120828210226-phpapp02

13/21

WALL THICKNESS CALCULATION OFFSHORE PIPELINE

DNV-OS-F101

5. Combine Load Criteria

PVE 13 Nguyn Minh Trung

8/16/2019 dnvosf101-120828210226-phpapp02

14/21

WALL THICKNESS CALCULATION OFFSHORE PIPELINE

DNV-OS-F101

• Load Control Criteria (Internal pressure)

PVE 14 Nguyn Minh Trung

8/16/2019 dnvosf101-120828210226-phpapp02

15/21

WALL THICKNESS CALCULATION OFFSHORE PIPELINE

DNV-OS-F101•

Load Control Criteria (Internal Pressure)

PVE 15 Nguyn Minh Trung

8/16/2019 dnvosf101-120828210226-phpapp02

16/21

WALL THICKNESS CALCULATION OFFSHORE PIPELINE

DNV-OS-F101•

Load Control Criteria (External Pressure)

PVE 16 Nguyn Minh Trung

8/16/2019 dnvosf101-120828210226-phpapp02

17/21

WALL THICKNESS CALCULATION OFFSHORE PIPELINE

DNV-OS-F101•

Displacement Control Condition

PVE 17 Nguyn Minh Trung

8/16/2019 dnvosf101-120828210226-phpapp02

18/21

WALL THICKNESS CALCULATION OFFSHORE PIPELINE

DNV-OS-F101

Recommendation Thickness

PVE 18 Nguyn Minh Trung

8/16/2019 dnvosf101-120828210226-phpapp02

19/21

ASME COMPARISION

ASME B31.4 ASME B31.8

PVE 19 Nguyn Minh Trung

8/16/2019 dnvosf101-120828210226-phpapp02

20/21

QUESTION

PVE 20 Nguyn Minh Trung

8/16/2019 dnvosf101-120828210226-phpapp02

21/21

THANK YOU FOR YOUR ATTENTION!

PVE 21 Nguyn Minh Trung