Cost-Efficient Structural Upgrade and Life Extension of Ekofisk Platforms with Use of Modern Reassessment Techniques

2001 ◽  
Author(s):  
Henrik Grigorian ◽  
Ingar Scherf ◽  
Wei Chi Yu ◽  
Øyvind Christensen
Keyword(s):  
Life Extension ◽  
Cost Efficient

Remaining Life Assessment and Life Extension of Offshore Pipelines

2018 ◽  
Author(s):  
Jens P. Tronskar
Keyword(s):  
Life Assessment ◽  
Life Extension ◽  
Remaining Life ◽  
Original Design ◽  
Offshore Pipelines ◽  
Field Development ◽  
Design Life ◽  
The Future ◽  
Cost Efficient ◽  
Remaining Life Assessment

Cost efficient offshore field development often involves tiebacks to existing field infrastructure. Efficient field development requires life extension of existing production facilities and pipelines to accommodate the new field resources over their life expectation. For fields near the tail end of their production the pipelines may be close to the end of their design life, and it must be shown that they have potential for extended life beyond the original design life until the end of the period of operation of the new field. Offshore pipelines are designed and constructed to recognized standards, such as the widely applied DNV OS-F101 2013 Submarine Pipelines Systems and earlier versions. The latest edition of the code was recently issued as a standard with some major updates and a modified code number i.e. DNVGL ST-F101 [1]. As pipelines age, they will inevitably be exposed to various types of degradation and an Operator must be able to both assess the significance of this damage and the pipeline remaining life to ensure that the pipelines do not fail as they age before the end of their design lives. Currently, many pipelines are operated far beyond the original design life and as mentioned above for cost efficient field development the pipeline operator often needs to demonstrate that the pipeline’s useful life can be extended another 10 or in some cases up to 30 years. For some pipelines, new operating conditions will be introduced by tie-in of new fields and this will impact the future rate of degradation. Hence, it cannot be assumed that the future degradation will be similar or less severe than experienced since commissioning of the pipeline. Extension of the life of the pipeline can be demonstrated by adopting methods of analysis that show the line is safe for an extended life under the future expected operating condition. This paper describes the risk based approach applied for pipeline remaining life and life extension analyses based on DNV GL codes and other relevant recommended practices. For illustration of the methodology a typical case of remaining life assessment of and life extension of a gas export pipeline is presented in the Case Study.

Fatigue Analysis and Risk Based Inspection Planning for Life Extension of Fixed Offshore Platforms

2005 ◽  
Author(s):  
Michael Havbro Faber ◽  
Daniel Straub ◽  
Partha Chakrabarti ◽  
Ibrahim Abu-Odeh ◽  
Juan de Dios de la O. Rami´rez
Keyword(s):  
Life Extension ◽  
Present Condition ◽  
Offshore Platforms ◽  
Inspection Planning ◽  
Standard Code ◽  
Jacket Structures ◽  
Service Life Extension ◽  
Inspection And Maintenance ◽  
Cost Efficient ◽  
Recent Project

The present paper reports on the application of Risk Based Inspection (RBI) planning as conducted on a recent project for Pemex Exploracio´n y Produccio´n. The project considers the engineering assessments required for a possible service life extension of 23 fixed steel jacket structures located in the Bay of Campeche. In the project RBI plays an important role as this quantifies the relation between the overall performances of the platforms in their present condition with their future deterioration and facilitates the identification of strategies for cost efficient condition control by means of targeted inspection and maintenance activities and if necessary repair and strengthening. For the purpose of facilitating efficient RBI for larger number of structures of more or less similar characteristics, a generic scheme for RBI is pursued. The specific aspects of the generic RBI for the considered group of structures in regard to risk acceptance criteria, modeling of inspection qualities and the probabilistic fatigue and fracture mechanical modeling are outlined. Finally also a study is reported whereby the benefit of the RBI approach is assessed as a means of risk control in comparison to standard code based requirement for inspection planning.

Life Extension of Nuclear Power Plants: World Situation and the USA Case

2010 ◽  
pp. 50-56 ◽  
Author(s):  
Pablo T. León ◽  
Loreto Cuesta ◽  
Eduardo Serra ◽  
Luis Yagüe
Keyword(s):  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Life Extension ◽  
The Usa

Modern university as an economic growth driver: Models & missions

2017 ◽  
pp. 58-76 ◽  
Author(s):  
A. Karpov
Keyword(s):  
Economic Growth ◽  
Education Research ◽  
Advanced Technology ◽  
Global Competitiveness ◽  
Technology Markets ◽  
Fast Growing ◽  
Business Ecosystem ◽  
Cost Efficient ◽  
National Economies ◽  
The University

The paper considers the modern university as an economic growth driver within the University 3.0 concept (education, research, and commercialization of knowledge). It demonstrates how the University 3.0 is becoming the basis for global competitiveness of national economies and international alliances, and how its business ecosystem generates new fast-growing industries, advanced technology markets and cost-efficient administrative territories.

Campaign Life Extension of Blast Furnace Offgas System

2020 ◽  
Author(s):  
C. Lopes ◽  
C. Van der Woude ◽  
H. Ghorbani ◽  
J. Luiz de Oliveira ◽  
M. Al-Dojayli ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Life Extension ◽  
Campaign Life

Unravelling a microbial synergy to boost caproate production via carboxylates chain elongation with ethanol

2019 ◽  
Vol 26 (2) ◽  
pp. 63-71
Author(s):  
Ling Leng ◽  
Ying Wang ◽  
Peixian Yang ◽  
Takashi Narihiro ◽  
Masaru Konishi Nobu ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Volatile Fatty Acids ◽  
Microbial Consortia ◽  
Chain Elongation ◽  
Desulfovibrio Vulgaris ◽  
Rrna Gene ◽  
Selective Enrichment ◽  
Microbial Network ◽  
Cost Efficient ◽  
Rrna Gene Sequencing

Chain elongation of volatile fatty acids for medium chain fatty acids production (e.g. caproate) is an attractive approach to treat wastewater anaerobically and recover resource simultaneously. Undefined microbial consortia can be tailored to achieve chain elongation process with selective enrichment from anaerobic digestion sludge, which has advantages over pure culture approach for cost-efficient application. Whilst the metabolic pathway of the dominant caproate producer, Clostridium kluyveri, has been annotated, the role of other coexisting abundant microbiomes remained unclear. To this end, an ethanol-acetate fermentation inoculated with fresh digestion sludge at optimal conditions was conducted. Also, physiological study, thermodynamics and 16 S rRNA gene sequencing to elucidate the biological process by linking the system performance and dominant microbiomes were integrated. Results revealed a possible synergistic network in which C. kluyveri and three co-dominant species, Desulfovibrio vulgaris, Fusobacterium varium and Acetoanaerobium sticklandii coexisted. D. vulgaris and A. sticklandii (F. varium) were likely to boost the carboxylates chain elongation by stimulating ethanol oxidation and butyrate production through a syntrophic partnership with hydrogen (H2) serving as an electron messenger. This study unveils a synergistic microbial network to boost caproate production in mixed culture carboxylates chain elongation.

Out-of-autoclave Process and Automation: A Successful Path to Highly Integrated and Cost Efficient Composite Wing Moveables

2019 ◽  
Author(s):  
Thibault de Lumley ◽  
François Mathieu ◽  
Didier Cornet ◽  
Dimitri Gueuning ◽  
Nicolas Van Hille
Keyword(s):  
Autoclave Process ◽  
Cost Efficient ◽  
Out Of Autoclave ◽  
Composite Wing

Resource and cost efficient selective collection

2014 ◽  
Vol 9 (Supplement 1) ◽  
pp. 43-54 ◽  
Author(s):  
Csaba Leitol
Keyword(s):  
Cost Efficient ◽  
Selective Collection
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