Subsea Pipeline Stability Standards Review

1.0           Subsea Pipeline Stability Standards Review

1.1             PETRONAS technical standards - PTS 31.40.00.10

The PTS offer the traditional static analysis.

1.2             British Standard - BS8010-2:2004

Generally, BS8010 follow the DNV RP E305 & DNV OS F101

1.3             ASME\ANSI B31.8

ASME B31.8 recommends the traditional static analysis.

1.4             API recommended practice 1111, 4 Edition, Dec-2009

API use AGA research (PR-178-516 & PR-178-717) for on-bottom stability analysis. The AGA research defines 3 levels for stability analysis.

Level1: static analysis with single airy wave

Level 2: static analysis with wave spectrum and embedment

Level 3: dynamic analysis with random wave kinematics

Level 3 is similar to DNV code. AGA use Lstab software for stability calculations.

1.5             TOTAL General Specification, Submarine pipeline system, GS PLR 100

GS PLR 100 suggests DNV or equivalent codes.

1.6             DNV

DNV published DNV RP E305 in 1988 and considered pipeline stability for static and dynamic and generalized methods. DNV developed this standard in DNV RP F109. DNV commonly used for stability of submarine pipeline

1.7      Conclusion

DNV RP F109 is considered as a best code for stability calculation and this report is based on it.