... and wellhead/casing systems using a site-specific scatter diagram of LCE. A scatter diagram consists of a number of full-depth current speed profiles and associated probabilities of occurrence for each profile. Scatter diagrams often consist of too many current profiles, which can make the VIV analysis...

... to OWT support structures and the use of the scatter diagram lumping method to accelerate the time-domain fatigue analysis. The spectral fatigue analysis method has long been used in the design of offshore platforms in the offshore oil and gas industry. The applicability of this method to the monopile...

... and the main focus of this paper on the scatter diagram of current profiles for the fatigue analysis of risers. A scatter diagram of POD coordinates and associated profiles is developed by binning the data for first three POD coordinates, since it was found that the measured current speed magnitude process...

... data format wind sea wave height monita system fpso scatter diagram OTC 20869 Wave Measurements for the Monitas System Jeff Hanson/WaveForce Technologies, Andrea Lübben/OceanWaves, Pieter Aalberts/MARIN and Miroslaw Lech (Mirek) Kaminski/MARIN Copyright 2010, Offshore Technology Conference...

... the spectral shape of the process is more broad-banded than the form assumed in developing the spectral procedure. touchdown 1 machine learning stress time history stress process artificial intelligence spectral method simulation arc length scr fatigue life scatter diagram damage estimate...

... Criteria Gives details on parameter selection associated with calculating fatigue damage from local armour wire stresses. OTC 18303 3 The Guidelines also contains a set of annexes that give supplementary information on the following topics: Generation of Deterministic Scatter Diagrams Gives methods...

... Abstract This paper describes a scatter diagram approach for the classification of large numbers of current profiles for use in the prediction of riser fatigue damage due to vortex-induced vibration. Scatter diagrams have long been used to characterize the probability of various combinations...

... steel tube umbilical dynamic steel tube irregular seastate steel tube dynamic steel tube umbilical load case calculation coefficient deepstar umbilical otc 8730 subsea system scatter diagram fatigue life design life bend stiffener deepstar dynamic umbilical configuration tube...

... by thestructural member to reach steady state, given the wind is at the critical windspeed. The third correction factor, Y bin , accounts for the use ofdiscrete wind speed and direction scatter diagrams rather than smooth windspeed probability density functions. probability computation lock-in bandwidth...

... be supplied. These are defined in Ftgure 2. The distance travelled between each way point is called a leg. A voyage can exist of a series of one or more legs, A pre- processing program (MARPLOT) is used the graphically define the voyage. The Wave Climate. The wave scatter diagrams as presented in GWS...

... details andimplementation of the monitoring system. data sequence scatter diagram texas exposure test end tow procedure evaluation jacket transport proceedings course alteration fatigue damage test 139 seastate implementation tow master houston OTe 6175 Monitoring a Jacket...

... analysis. 1. Develop a transfer function for nor- mal force on the wear surface and relative sliding distance. This involves a global analysis of the platform under waves of various fre- quencies, as in a standard spectral fatigue analysis. 2. For each seastate in the scatter diagram, determine the maximum...

... responses cause failure. These processes are induced by environmental actions such as wave and/or turbulent wind processes. Secondly, the slow varying processes Y(t} are introduced as square wave processes. bjerager load process scatter diagram reliability method veritas research upstream oil...

... frequency calculation fatigue life analysis fatigue damage fatigue life marginal distribution wave height upstream oil & gas history scatter diagram fatigue analysis wave theory variation riser wave zone iteration block stress range seastate domain method aTe 5468...

.... The wave height sensor is a down-looking infrared device that operates on timed pulses. wind speed wave height hutton tlp performance monitoring artificial intelligence verification program scatter diagram sensor machine learning tlp status performance data prediction storm standard...

... structures. A mean water depth of 25m was adopted in each case. The statistical analyses were based upon a scatter diagram for Carmarthen Bay, UK, which is one of the areas identified as being of possible development potential for offshore windpower. CURRENT PRACTICE The use of a deterministic approach...

... reliability limit-state design platform criteria checking format api wid ratio interaction ratio coefficient scatter diagram strength resistance load combination safety index upstream oil & gas partial coefficient soil case dor load case subsea system gravity load OTe...

... the fatigue damage. A proper fatigue analysis requires data on the various seastates that a structure will be subjected to during its lifetime. Such data can be obtained from measure- ments, ship observations or hindcasts. For fatigue analysis, wave data are normally defined by a seastate scatter diagram...

... maximum sea state scatter diagram tow route space frame model barge motion subsea system tow line tug tow theoretical fatigue damage stress range calculation critical motion curve fatigue damage OTC 4163 FATIGUE CONSIDERATIONS FOR OCEAN TOWAGE by Edmund C. Hambly, Antony J. Edwards, Colin...

... the member stress transfer functions generated, probabilistic spectral techniques are applied to evaluate short-term stress sta- tistics at the hot spots for each sea state in the annual directional wave scatter diagrams for the platform location. Directional spreading of wave energy is included...