In-Place, Seismic and Fatigue Analysis of Offshore Platform for Life Extension

  • Muhammad Al- Farisi Undergraduate Student, Jurusan Teknik Kelautan, Institut Teknologi Sepuluh Nopember (ITS), Surabaya, Indonesia
  • Muhammad Zikra Department of Ocean Engineering, Institut Teknologi Sepuluh Nopember (ITS), Surabaya, Indonesia
DOI: http://dx.doi.org/10.36842/jomase.v18i1.453

Abstract

This paper presents reassessment of existing offshore platform in the Ardjuna Field, Northwest of Java, Indonesia. The existing platform of B1C was installed in 1975 and owned by PHE ONWJ. The B1C platform is numerically evaluated for service life extension purposes until the next twenty years. The reassessment analyses focus on in-place analysis, seismic analysis and fatigue analysis. These analyses refer to recommended practice issued by American Petroleum Institute standard. The results indicated that the entire value of unity check for all members fulfill the requirements of API RP 2A - WSD. Analysis of fatigue computation showed that three joints have the fatigue life less than 59 years.

##Keywords:## Offshore platform, assessment, fatigue, in-place, seismic.
Published
Apr 20, 2015
How to Cite
FARISI, Muhammad Al-; ZIKRA, Muhammad. In-Place, Seismic and Fatigue Analysis of Offshore Platform for Life Extension. Journal of Ocean, Mechanical and Aerospace -science and engineering-, [S.l.], v. 18, n. 1, p. 14-19, apr. 2015. ISSN 2527-6085. Available at: <https://isomase.org/Journals/index.php/jomase/article/view/453>. Date accessed: 02 may 2026. doi: http://dx.doi.org/10.36842/jomase.v18i1.453.
Citation Formats
Issue
Vol 18 No 1 (2015): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Section
Articles

References

1. American Petroleum Institute, (2000). Recommended Practice for Planning, Designing and Constructing Fixed Offshore Platforms – Working Stress Design. API RP 2A – WSD, 21st Edition.
2. American Institute of Steel Construction (AISC). (2000). Manual of Steel Construction, Allowable Stress Design. 3. American Welding Society (AWS-D1.1.90), “Structural Welding Codes – Steel”.
4. PT. Soilmaklelan, (1993). Integrated Geotechnical and Geophysical Study, Proposed Platform Location Bravo-2., Ardjuna Field, Java Sea, Indonesia.
5. Dames and Moore (2000). Seismic Risk and Site Response Study, Ardjuna Field, Java Sea, Indonesia.
6. A.H. Glenn & Associates. (1989). 100 and 1-year Storm Wind, Tide, Wave, and Current Characteristics, and Wave – Current Forces, and 10 Year Directional Wave Height Distribution and Associated Wave Periods: Approximately 5o54’55”S, 107o43’52”E, 130 foot Chart Depth: Offshore Northwest Java, Java Sea, Indonesia.