scholarly journals A Study on Risk and Expense Evaluation of Agility Supply Management of Machinery

2020 ◽  
Vol 2020 ◽  
pp. 1-19
Author(s):  
Mohammad Heydari ◽  
Kin Keung Lai
Keyword(s):  
Natural Gas ◽  
Pressure Vessels ◽  
Gas Pressure ◽  
Supply Management ◽  
Technical Improvement ◽  
Compressed Natural Gas ◽  
Statistical Population ◽  
Technical Assessment ◽  
Descriptive Survey ◽  
The Relationship

We provide a technical assessment and critique of the existing literature via highlighting problems associated with conceptualization and technical improvement of agility practices. By presenting a narrative evaluation of the technical review, we underscore the nature of the SC hazard in addition to agility practices and furnish a synthesis for future studies. The purpose is to examine the relationship between identifying and ranking the elements affecting supply management for SC agility in compressed natural gas pressure vessels. This study is applied research and data are collected based on descriptive survey. The populace of the investigation is milled compressed natural gas pressure vessels. Survey data are amassed through interviews and questionnaires. Cronbach’s alpha has been utilized to evaluate the reliability of the values received 0.778, which shows that the questionnaire is of excellent reliability and the questionnaire has 27 questions. Also, because the volume of the statistical population is 270 people, the consequences show that there is a positive connection among the empowerment of SC agility. Driving agility is on a positive supply chain (SC) agility. The expense has a poagilitysitive impact on SC agility.

Design and Testing of Large Diameter Composite Reinforced Pressure Vessels for Offshore Gas Applications

2004 ◽  
Author(s):  
John Wolodko ◽  
Tom Zimmerman ◽  
Gary Stephen ◽  
Greg Cano ◽  
Norman Fawley
Keyword(s):  
Natural Gas ◽  
Gas Transport ◽  
Large Diameter ◽  
Pressure Vessels ◽  
Compressed Natural Gas ◽  
Reinforced Composite ◽  
Design And Testing ◽  
Stranded Gas ◽  
Steel Design ◽  
Composite Steel

Bulk transportation of compressed natural gas is becoming a viable and flexible option for moving stranded gas reserves to existing or remote markets. One such technology that is currently being developed for this application is the Gas Transport Module (GTM™). Gas Transport Modules are large diameter, high pressure, fiber reinforced composite/steel pressure vessels intended for the mobile transport of natural gas on a variety of carriers including ships, barges, trucks and trains. The purpose of this paper is to discuss recent work concerning the design and testing of these large diameter, composite pressure vessels. The advantages of the proposed hybrid composite/steel design for offshore use are discussed. An overview of current standards development, specialized analysis methods and testing requirements is also provided.

Investigating the Relationship Between Electronic Literacy and Quality of Life of the Elderly in Arak, Iran

2021 ◽  
pp. 027046762110073
Author(s):  
Kiyana Hatamnezhad ◽  
Peyman Ghafari Ashtiyani ◽  
Faranak Seyedi
Keyword(s):  
Quality Of Life ◽  
Digital Literacy ◽  
The Elderly ◽  
Analysis Of Covariance ◽  
Statistical Population ◽  
Descriptive Survey ◽  
The Impact ◽  
The Relationship ◽  
Applied Purpose

This study aimed to investigate the relationship between digital literacy and the quality of life of the elderly in Arak. The research is a descriptive survey in terms of applied purpose and terms of method and nature. The statistical population of the present study included all the elderly in Arak who were at least 64 years and older; 376 participants were selected using the sampling method. Participants were assessed with the help of digital literacy and quality-of-life questionnaires. To analyze the data, descriptive statistics (mean, standard deviation) and inferential statistics (analysis of covariance) were used using the SPSS-21 software. The results showed that all parameters of digital literacy had a direct and significant effect on the quality of life of the elderly. Among the quality-of-life parameters, the impact of the physical environment health was less than that of the others.

scholarly journals Application of ASME Section VIII Division 3 to Compressed Natural Gas Transport

2013 ◽  
Author(s):  
J. Robert Sims
Keyword(s):  
High Pressure ◽  
Natural Gas ◽  
Gas Transport ◽  
Composite Fiber ◽  
Pressure Vessels ◽  
Liquefied Natural Gas ◽  
Compressed Natural Gas ◽  
Marine Transport ◽  
Section Viii ◽  
Natural Gas Transport

Marine transport of liquefied natural gas (LNG) is well established and extensive precedents for the design of the ships and tanks exist. Fewer precedents exist for the transport of compressed natural gas (CNG). This paper describes the application of composite (fiber) wrapped pressure vessels constructed to the requirements of ASME Section VIII Division 3, Alternative Rules for Construction of High Pressure Vessels (Division 3) to pressure vessels for marine CNG transport. Since the density of CNG is much lower than the density of LNG, efficient transport requires that the pressure vessels be as light as possible while ensuring pressure integrity. The advantages of a composite fiber wrap and of Division 3 construction for this application will be discussed. Paper published with permission.

scholarly journals Development of ASME Section X Code for High Pressure Vessels

2010 ◽  
Author(s):  
Norman L. Newhouse ◽  
George B. Rawls
Keyword(s):  
High Pressure ◽  
Natural Gas ◽  
Pressure Vessel ◽  
Load Sharing ◽  
Pressure Vessels ◽  
Operating Conditions ◽  
Compressed Natural Gas ◽  
Qualification Testing ◽  
Industry Needs ◽  
Pressure Hydrogen

ASME has a project to meet industry needs for pressure vessel Code updates to address storage of high pressure hydrogen. This has resulted in updates to existing B&PV Code, new Code Cases, and new Code requirements. One of the tasks was to develop requirements for high pressure composite reinforced vessels with non-load sharing liners. Originally developed as a Code Case, the requirements have been approved as mandatory Appendix 8 of ASME Section X of the B&PV Code, to be published in July 2010. The allowed pressures of this new Code are from 0.7 MPa (3,000 psi) to 103.4 MPa (15,000 psi). Qualification testing addresses expected operating conditions. Inspection requirements are being developed in cooperation with NBIC. Pressure vessels are being developed that meet the new ASME requirements. Efforts will be made to include additional gases, including compressed natural gas, and additional operational requirements in future revisions. Paper published with permission.

The relationship between different types of leadership, client's identity, and self-confidence and auditors' impartiality

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Mahdi Salehi ◽  
Alireza Ghaderi ◽  
Habibe Hashemisima ◽  
Zohreh Zahedi
Keyword(s):  
Transformational Leadership ◽  
Significant Relationship ◽  
Model Fitting ◽  
Structural Equations ◽  
Statistical Population ◽  
Content Type ◽  
Self Confidence ◽  
Audit Firms ◽  
Descriptive Survey ◽  
The Relationship

PurposeThis paper aims to assess the effect of different leadership types, the client's identity and auditors' self-confidence on auditors' impartiality.Design/methodology/approachThis paper is a descriptive-survey type, and the collected data are based on a predesigned questionnaire distributed in January 2020. The PLS software is used for data analysis, and the statistical population of this paper includes employed auditors in enlisted audit firms on the Official Association of Auditors. When the parameters were insignificant, the obtained probability from the model fitting was used for hypothesis testing, and the appropriateness of the model was assessed via the structural equations.FindingsThe results show a significant relationship between charismatic, transformational, participatory, delegating and bureaucratic leadership and auditors' impartiality. There is also an association between the client's identity and the auditor's impartiality. The client's identity mediates the relationship between transformational leadership and the auditor's impartiality. Moreover, there is a significant relationship between self-confidence and auditor's impartiality.Originality/valueThis paper enjoys an innovative method in the field of behavioural auditing. The effect of transformational leadership on auditor's impartiality with the mediatory role of the client's identity shows the in-depth client–auditor relationship has been taken for granted and not examined previously, so the results of this paper can lend a helping hand to audit firms to enhance the organisational performance.

scholarly journals ANALISIS KEKUATAN PEGAS PRESSURE REDUCER SEBAGAI PENURUNAN TEKANAN PADA MESIN DUEL FUEL

2017 ◽  
Vol 17 (2) ◽  
pp. 31-38
Author(s):  
Dori Yuvenda ◽  
Bambang Sudarmanta ◽  
Erzeddin Alwi
Keyword(s):  
Natural Gas ◽  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Gas Pressure ◽  
Dual Fuel ◽  
Compressed Natural Gas ◽  
Fuel Model

Pressure reducer merupakan komponen utama pada conversion kit pada mesin bahan bakar ganda (duel fuel engine) yang berfungsi sebagai penurun tekanan pada bahan bakar compressed Natural gas dari tangki sebesar ± 250 bar menjadi tekanan kerja pada injektor gas sebesar ± 2 bar, sehingga menyebabkan kekurangan pasokan jumlah bahan bakar dari pressure reducer yang berpengaruh tethadap penurunan performa mesin, baik pada saat perubahan putaran mesin secara tiba-tiba maupun perubahan beban mesin. Mengatasi permasalah tersebut maka diperlukan upaya untuk meningkatkan performa pressure reducer agar lebih adaptif terhadap perubahan kondisi mesin. Salah satu upaya yang dilakukan untuk peningkatan performa tersebut adalah menambah kekuatan konstanta pegas pada area chamber stage dua pressure reducer. Penelitian ini menggunakan mesin Diamond tipe DI 800 dengan sistem dual fuel model indirect injection. Metode yang dilakukan adalah menvariasikan kekuatan konstanta pegas (25,55 N/m, 26,55 N/m, dan 27,55 N/m). Hasil terbaik didapatkan pada konstanta pegas 27,55 N/m terjadi peningkatan jumlah laju aliran gas (mass flow rate) pada saluran keluar (outlet gas pressure reducer) sebesar 7,42%. Hal ini menunjukkan terjadi peningkatan performa pressure reducer pada saat penambahan kontanta pegas pada stage dua

Upstream Stranded Raw Gas Management as Compressed Natural Gas (CNG)

2013 ◽  
Author(s):  
Michael J. Economides ◽  
Xiuli Wang ◽  
Francesco Colafemmina ◽  
Vanni Neri Tomaselli
Keyword(s):  
Natural Gas ◽  
Compressed Natural Gas
Sign in / Sign up

Export Citation Format

Share Document