Day 1 Wed, March 08, 2023最新文献

{"title":"Identifying Safety Leading Indicators for the Offshore Industry","authors":"Weihang Zhu, Rick Curtis, James Curry, K. McSweeney, Brian Craig, Ezra Wari","doi":"10.5957/tos-2023-019","DOIUrl":"https://doi.org/10.5957/tos-2023-019","url":null,"abstract":"Offshore safety includes process safety and personal safety. Safety leading indicators (LIs), or potential safety precursors, are parameters defined in the safety program pointing to potential areas for improvement, that if corrected can improve safety performance. For example, timely completion of equipment inspections can reduce the likelihood of equipment failure with associated hazards. They identify which safety metrics are more strongly associated with safety performance in a particular organization. This information can be used to improve future safety performance. This paper describes the research efforts to identify potential safety LIs that may help predict or prevent safety issues for the offshore oil and gas industry. Three relevant case studies of LIs for the offshore industry from the literature are discussed. The focus of this paper is on personal and process safety LIs in the offshore sector. Based on the Bureau of Safety and Environmental Enforcement (BSEE) safety culture factors, this paper collects and categorizes a list of potential offshore safety leading indicators.","PeriodicalId":292263,"journal":{"name":"Day 1 Wed, March 08, 2023","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134646656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Missing The Mark -Why We Will Not Meet Our Offshore Renewable Energy Goals and How to Fix it","authors":"Roy Robinson","doi":"10.5957/tos-2023-016","DOIUrl":"https://doi.org/10.5957/tos-2023-016","url":null,"abstract":"The world is sold on offshore renewable energy, but with a myopic focus on wind. The US has a stated federal goal of 30GW of wind by 2030, but the States are more ambitious with stated objectives of adding 51 GW of fixed and 15GW of floating wind by 2030. Globally those numbers are 1748GW of fixed and 264GW of floating by 2050 (Ref 1,2), up from only 56GW total now. The problem is the supply chain is not ready to support this. Currently there are only 17 wind turbine installation vessels capable of installing 10MW turbines, and only 3 capable of installing the newest 14 MW turbines, with another 13 vessels due by 2026. Recent developments using floating heavy lift vessels will add to these numbers but not in quantities enough to alleviate the problem and vessels such as the Thialf come with very high price tags.\u0000 As recent events have shown, the world needs to free itself from dependence on unreliable sources of energy. This makes the above situation even more troublesome, as the projected numbers going out as far as 2050 fall very short of what is needed. Not just for climate goals but even for the more modest goal of not relying on imported oil and gas. Taking Europe and NATO as an example, and even counting oil and gas production, there is an energy deficit of 9PWh per year. Just to make up that deficit will require far more renewable energy than is currently planned.\u0000 To achieve the desired green energy goals, it needs to be recognized that there are other options that can be pursued in conjunction with offshore wind, as well as new ways to install offshore renewable energy, both of which can relieve the pressure on the present supply and offshore installation market.\u0000 This paper describes:\u0000 The ways to eliminate the global installation vessel bottle neck and simultaneously speed up deployment.\u0000 How alternatives to conventional wind turbines can extend the supply chain, decouple it from some of the critical material dependencies and make other offshore areas feasible for wind energy conversion.\u0000 How combining multiple renewable energy technologies, placing them onto shared offshore platforms will make them more secure, increase the GW/year that can be installed, and reduce the need for power storage.","PeriodicalId":292263,"journal":{"name":"Day 1 Wed, March 08, 2023","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116011259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Study of Multiple Wave Probe Methods to Resolve Wave Reflections","authors":"Ashley N. Mullen, P. Koola, S. Girimaji","doi":"10.5957/tos-2023-009","DOIUrl":"https://doi.org/10.5957/tos-2023-009","url":null,"abstract":"Wave reflections are an important phenomenon for analyzing structures close to the coast. Wave energy structures increase the complexities of these measurements due to wave absorption. There have been numerous techniques developed to quantify wave reflections. Multiple wave probes have been used to resolve the incident and reflected wave components in the wave field. This paper attempts to validate the theory proposed by Lin and Huang (2004) that higher harmonic waves can be resolved using four wave gauges instead of traditional practice of three wave gauges which is unable to resolve higher wave harmonics. The results of this paper test the new technique by estimating the error bands for digitizing frequencies, noisy signals, and different wavelengths for a specific set of wave gauge spacing. The waves tested are artificially generated signals with known incident and reflected amplitudes with free and bound harmonic waves. This allows error estimations based on true values. After validation, we tested the technique with waves in a numerical wave tank (NWT). This comprehensive study of the multi-probe method proves the validity and provides limitations of using this technique for other ocean applications.","PeriodicalId":292263,"journal":{"name":"Day 1 Wed, March 08, 2023","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128821753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}