{"title":"Fracture Mechanics Based Asset Management Approach in SCC Environments","authors":"D. Segletes, C. Tipple, D. Peters","doi":"10.1115/pvp2019-94030","DOIUrl":"https://doi.org/10.1115/pvp2019-94030","url":null,"abstract":"\u0000 The operation of autoclave vessels at elevated temperature and pressure is common across a variety of industries. Many of the older operating vessels were fabricated from multiple forgings by welding. Austenitic stainless steels are the material of choice for many of these vessels, and precautions to prevent sensitization in the weld heat affected zone may not have been implemented during construction, which can increase susceptibility to environmental cracking conditions. Recently a vessel developed a through wall leak during the operating cycle. Three complimentary vessels at the same facility were inspected resulting in one additional vessel not returning to service and two with similar flaws. A multi-disciplinary approach was used to evaluate the failure, perform a fitness for service determination, and nondestructive examinations to monitor the flaw growth and validate the fitness for service inputs. The overall approach is discussed.","PeriodicalId":174920,"journal":{"name":"Volume 5: High-Pressure Technology; Rudy Scavuzzo Student Paper Symposium and 27th Annual Student Paper Competition; ASME Nondestructive Evaluation, Diagnosis and Prognosis Division (NDPD)","volume":"181 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114793848","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":"Investigation of the Seismic Risk of Industrial Pipe Rack - Piping Systems Accounting for Soil-Structure Interaction","authors":"G. Karagiannakis, L. Sarno","doi":"10.1115/pvp2019-93601","DOIUrl":"https://doi.org/10.1115/pvp2019-93601","url":null,"abstract":"\u0000 Earthquake events have shown that industrial pipe racks lack of a completed design framework that encompasses contemporarily a number of uncertainties such as modelling, seismic action, design and analysis procedures as well as soil conditions. That being said, the seismic behaviour of piping systems has not been assessed up to par recognizing the potential effects of nonbuilding – nonstructural components interaction as well as soil conditions that constitute a decisive parameter particularly for structures that lie on alluvial deposits. In the present work, after reviewing European and American standards and technical literature upon design parameters, the seismic reliability analysis of two pipe rack – piping systems in decoupled and coupled case considering near- and far-field records as well as soil deformability is addressed. As it is illustrated, the classic nonlinear static analysis may overestimate the resistance of racks, common limit states of interstorey drift ratio cannot be applied and the behaviour factor selection may be unjustifiable. Also, soil-structure interaction affects detrimentally the response both of rack and piping system as depicted by the fragility functions.","PeriodicalId":174920,"journal":{"name":"Volume 5: High-Pressure Technology; Rudy Scavuzzo Student Paper Symposium and 27th Annual Student Paper Competition; ASME Nondestructive Evaluation, Diagnosis and Prognosis Division (NDPD)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134455935","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":"Proposal of New Code Case for Alternative UT Flaw Evaluation and Acceptance Criteria of Subsurface Flaw Near Component Surface in Section VIII Division 2 and Division 3","authors":"S. Terada","doi":"10.1115/pvp2019-93105","DOIUrl":"https://doi.org/10.1115/pvp2019-93105","url":null,"abstract":"\u0000 The current proximity rules for subsurface flaws near the surfaces of component in Section VIII Division 2 and Division 3 are different from those of Section XI. The current acceptance criteria of Sec. XI were revised in 2008 in order to eliminate the discontinuity of acceptable and unacceptable flaws based on the research work by Dr. K. Hasegawa and Dr. K. Miyazaki el. The fracture mechanics evaluation for the current and proposed alternative acceptance criteria for subsurface flaws near a component’s surfaces based on Section XI have been performed. The stress intensity factors for transformed surface flaws of the current acceptance criteria for subsurface flaws near component’s surfaces are much larger and too conservative compared with the overall acceptance criteria. It is confirmed herein that the proposed alternative converting rules have enough fracture margin. Therefore, the safety level of this proposal is almost the same as that of the current code. The proposed alternative acceptance criteria may avoid unnecessary weld repairs, and eliminate the discontinuity of acceptable and unacceptable flaws in the area near the component’s surface.","PeriodicalId":174920,"journal":{"name":"Volume 5: High-Pressure Technology; Rudy Scavuzzo Student Paper Symposium and 27th Annual Student Paper Competition; ASME Nondestructive Evaluation, Diagnosis and Prognosis Division (NDPD)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124325643","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":"Light Weight Design of Multi-Layered Steel Vessels for High-Pressure Hydrogen Storage","authors":"Ye Sheng, Jinyang Zheng, Yu Ting, C. Gu, Z. Hua","doi":"10.1115/pvp2019-93934","DOIUrl":"https://doi.org/10.1115/pvp2019-93934","url":null,"abstract":"\u0000 Large scale storage of hydrogen is one of the key factors in hydrogen energy development. High-pressure hydrogen storage technology is widely used in hydrogen storage. It has advantages of easy operating, quick charge and discharge, simple equipment structure and low cost. The multi-layered steel vessel (MLSV) was developed for stationary hydrogen storage, which was flexible in design, safe in operation and convenient in fabrication. MLSV has been used in several hydrogen refueling stations in China. With the construction of hydrogen refueling stations accelerated, the vessel was required to be larger, lighter and cheaper. First, the basic structure of the MLSV was presented. Second, two light-weight methods were proposed and compared, including reducing the safety factor and increasing the strength of the steel band. Finally, the stress in the cylindrical shell of the MLSV using light-weight design were compared with the previous one. In addition, a MLSV using the light-weight method of reducing safety factor has been designed and fabricated, which can store 211 kg gaseous hydrogen at 50MPa.","PeriodicalId":174920,"journal":{"name":"Volume 5: High-Pressure Technology; Rudy Scavuzzo Student Paper Symposium and 27th Annual Student Paper Competition; ASME Nondestructive Evaluation, Diagnosis and Prognosis Division (NDPD)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127802923","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":"Bolted High Pressure Girth Flange Connections","authors":"Christoph Hantsch","doi":"10.1115/pvp2019-93937","DOIUrl":"https://doi.org/10.1115/pvp2019-93937","url":null,"abstract":"\u0000 Besides metallic lens ring gaskets for piping applications the high-pressure processes for LDPE production also require gaskets for bolted girth flange connections. A typical application is the 380 bar (5500 psi) head to tubesheet connection of a recycle gas cooler for the LDPE production process. The most common gasket types for this application are either solid ring or spring energized seals. During startup of an LDPE tube-reactor severe ethylene leaks occurred even though the flanged connection had successfully passed the hydrotest at the fabrication shop. A detailed investigation supported by the exchanger fabricator, gasket manufacturer and LDPE process licensor found that connections having line contact stress need to be treated differently from commonly known surface pressure based flat gasket connections. In this paper the author explains the basic considerations for leak tight flange design using spring energized gaskets supported by FEA based root cause leak investigation results. Conclusions are drawn about the appropriate limits for deflection of flanges as compared to results using bolted flat gasket types like Kammprofile gaskets.","PeriodicalId":174920,"journal":{"name":"Volume 5: High-Pressure Technology; Rudy Scavuzzo Student Paper Symposium and 27th Annual Student Paper Competition; ASME Nondestructive Evaluation, Diagnosis and Prognosis Division (NDPD)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125192964","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":"Validation for External Tieback Connector Bending Capacity by Strain Measurement","authors":"Adam J. Christopherson, Young-Hoon Han","doi":"10.1115/pvp2019-93925","DOIUrl":"https://doi.org/10.1115/pvp2019-93925","url":null,"abstract":"\u0000 Strain gauges provide a convenient and affordable method to accurately measure the strain field for complex systems. Not only do they provide crucial information for predicting the fatigue life of components, but they can also determine the principle stresses which can be used to compare design factors with accepted industry standards. The use of electrical resistance strain gauges for load verification has become an ever-increasing practice in the design of subsea connectors as evidenced by the recent application in the industry guidance API 17TR7 [1]. The design is aided by the development of a Finite Element Analysis (FEA) which is used to predict the load capacities for normal, extreme, and survival conditions. The present work describes the experimental validation of a 18-3/4in 10,000 psi subsea collet connector model by applying linear pattern CEA-06-062UW-350 strain gauges at discrete points along the circumferentially spaced collet segments. The collet segments are the selected components for strain gauge placement because not only are they the primary connecting element between the subsea wellhead and the connector body, but they also only support axial loads. The axial strain of the collet segments in tension were compared at two combined loading cases: maximum bending capacity with and without internal working pressure and found to be in good correlation with the elastic-plastic FEA. The experimentally validated FEA is a crucial tool in determining the connector’s application to project or customer specific load and fatigue requirements and eliminates the need for unnecessary experimentation.","PeriodicalId":174920,"journal":{"name":"Volume 5: High-Pressure Technology; Rudy Scavuzzo Student Paper Symposium and 27th Annual Student Paper Competition; ASME Nondestructive Evaluation, Diagnosis and Prognosis Division (NDPD)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123227965","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":"Finite Element Analysis of Printed Circuit Heat Exchanger Core for Creep and Creep-Fatigue Responses","authors":"Heramb P. Mahajan, T. Hassan","doi":"10.1115/pvp2019-93416","DOIUrl":"https://doi.org/10.1115/pvp2019-93416","url":null,"abstract":"\u0000 Printed circuit heat exchangers (PCHEs) have a high heat transfer coefficient which makes them a suitable option for very high temperature reactors (VHTRs). ASME Section VIII design code provide PCHE design rules for non-nuclear applications. The PCHE design methodology for nuclear applications is yet to be established. Towards developing the ASME Section III code rules, this study started with the PCHE design as per section VIII. An experimental set up is developed to evaluate the designed PCHE for creep and creep-fatigue performances. This study performed pretest finite element analysis to estimate experimental responses and failure loads for setting up the experiments. Three dimensional isothermal analyses of the PCHE’s were conducted by using an advanced unified constitutive model to simulate the creep-fatigue interaction. The sub-modeling technique was used to analyze the channel scale response of the PCHE. Analysis results indicate that the failure may be governed by the channel corner responses, which is influenced by the creep-fatigue interaction. Analysis based creep-fatigue damage curve is plotted as per ASME code to evaluate the design of PCHEs for nuclear application.","PeriodicalId":174920,"journal":{"name":"Volume 5: High-Pressure Technology; Rudy Scavuzzo Student Paper Symposium and 27th Annual Student Paper Competition; ASME Nondestructive Evaluation, Diagnosis and Prognosis Division (NDPD)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128740355","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":"Safe and Reliable Temperature and Pressure Measurement for High Pressure Applications","authors":"T. Maupin, J. Breunig","doi":"10.1115/pvp2019-93850","DOIUrl":"https://doi.org/10.1115/pvp2019-93850","url":null,"abstract":"\u0000 For high pressure polyethylene applications, reliable temperature and pressure measurement with extremely fast response time, is crucial in order to avoid decomposition. Furthermore instrumentation must withstand not only the high pressures and temperatures, but also the vibration present in such a challenging environment. The requirements of temperature and pressure instrumentation include high quality mineral insulated cable, production techniques such as vacuum brazing and thin film sputtering as well as testing facilities. With this information, operators will be able to select high pressure thermocouples and pressure transmitters which are specifically designed for their application.","PeriodicalId":174920,"journal":{"name":"Volume 5: High-Pressure Technology; Rudy Scavuzzo Student Paper Symposium and 27th Annual Student Paper Competition; ASME Nondestructive Evaluation, Diagnosis and Prognosis Division (NDPD)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126267585","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":"Subsea Intervention System Connector Capacities per the Elastic-Plastic Analysis Methodology","authors":"A. Sepehri, G. Bansal, Mangesh Edke","doi":"10.1115/pvp2019-93798","DOIUrl":"https://doi.org/10.1115/pvp2019-93798","url":null,"abstract":"\u0000 The offshore oil and gas industry is drilling into and producing from wells in high-pressure, high-temperature (HPHT) environments. This has created a greater demand to develop more advanced tools and new technology to safely overcome the challenges in these operations. Due to the sensitivity and potential impact on the environment, the industry is striving to homogenize the design and acceptance criteria. The API 17G is the industry standard for offshore intervention operations. According to the standard, design verification is performed using finite element analysis (FEA). The standard provides three sets of criteria for determining capacities that adopt the methodologies from ASME Boiler Pressure Vessel Code (BPVC) Section VIII, Div. 3.\u0000 The objective of this study is to evaluate tension, pressure, and bending moment capacities per the elastic-plastic analysis methodologies outlined in API 17G for a subsea intervention system connector. The global and local failure capacities are presented for yielding load, plastic collapse, and 2% strain methods. Results indicate that the plastic collapse method is the most conservative approach for evaluating the global capacity of the connector.","PeriodicalId":174920,"journal":{"name":"Volume 5: High-Pressure Technology; Rudy Scavuzzo Student Paper Symposium and 27th Annual Student Paper Competition; ASME Nondestructive Evaluation, Diagnosis and Prognosis Division (NDPD)","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114901970","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}
Yang Sha, D. Qi, Zhang Liucheng, Feng Jiahe, Hu Rongxi
{"title":"Study of the Flow Field in Cylindrical Vessel","authors":"Yang Sha, D. Qi, Zhang Liucheng, Feng Jiahe, Hu Rongxi","doi":"10.1115/pvp2019-93171","DOIUrl":"https://doi.org/10.1115/pvp2019-93171","url":null,"abstract":"\u0000 A tooth-lock cover is a kind of convenient closure used in explosive containment vessels. But in experiments, it is found that a small amount of explosive exploded in cylindrical vessels could cause severe deformation to the tooth-lock covers. In some situations, the cover would even be blown out of the vessel with severe distortion. The spreading and superposition of the shock waves in the cylindrical vessel is studied in this paper. Impulse is chosen as the evaluation parameter instead of the peak pressure because of the reflection and superposition of the shock waves. The piston method is used to calculate the impulse and the result is verified in 8-tooth cover vessels. This method can evaluate the intensity of the shock wave loaded on the cover. It would be useful in the optimization of the explosion containment vessels.","PeriodicalId":174920,"journal":{"name":"Volume 5: High-Pressure Technology; Rudy Scavuzzo Student Paper Symposium and 27th Annual Student Paper Competition; ASME Nondestructive Evaluation, Diagnosis and Prognosis Division (NDPD)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121820223","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}