Safety Analysis and Risk Assessment for Pressure Systems

2003 ◽  
Author(s):  
Boris Blyukher
Keyword(s):  
System Analysis ◽  
Hazard Analysis ◽  
Safety Analysis ◽  
Risk Level ◽  
Analysis And Design ◽  
Analysis Process ◽  
Major Factors ◽  
Serious Injuries ◽  
And Control ◽  
Research Facilities

There have been many instances where serious injuries and fatalities have resulted from over-pressurization, thermal stress, asphyxiation and other potential hazards associated with testing, handling and storage of compressed gases and pressure facilities at numerous production and research facilities. These hazards are major issues that should be addressed in system design and in materials selection appropriate for high pressure applications. Potential hazards may be mitigated through system analysis and design process which are the major factors in preventing thermal/pressure hazards caused by possible leaks and fragmentation, in the case of rupture. This paper presents a conceptual model and framework for developing a safety analysis which will reduce potential hazards, accidents and legal liabilities. The proposed systematic approach allows to identify hazards provide timely documentation of potential hazards and risks associated with systems, facilities, and equipment. As a result of this hazard analysis process, provisions and actions for hazard prevention and control have been put in place, and all identifiable potential hazards can be reduced to a low risk level.

Recent advances on GERT method based on Bayesian networks

2020 ◽  
Vol 13 ◽  
Author(s):  
Dui Hongyan ◽  
Chen Shuanshuan ◽  
Zhang Chi ◽  
Li Chunyan
Keyword(s):  
Bayesian Network ◽  
Process Management ◽  
System Analysis ◽  
Validity And Reliability ◽  
Engineering Technology ◽  
Analysis And Design ◽  
Expected Time ◽  
Gert Network ◽  
And Control ◽  
Project Process Management

Background: Identifying key processes and key paths plays an important role in project process management and control. Therefore, in order to reduce the expected time of the project, some analysis methods other than engineering technology must be adopted for analysis and research. Graphical Evaluation and Review Technique (GERT) is a useful tool in system analysis and design. GERT can process the relationships in network diagrams, which is a network with feedback function and has been applied in many aspects. Methods: In this paper, based on Bayesian network model and GERT network, a new method for analyzing project process is studied. Firstly, all the variable nodes of the GERT network are determined. Secondly, the variable nodes in the GERT network are divided into tandem nodes, aggregation nodes, distributed nodes, and self-loop nodes in the Bayesian network. Third, the GERT network parsing method is used to calculate the expected time of the partial variable node. Then the network structure of the Bayesian network is constructed by connecting the nodes with the directed edges. Results: Thus, a GERT Bayesian model is established. Based on the posterior probability of Bayesian network, we have determined the key process, improved the key process and shortened the processing time. Conclusion: Finally, this method is used to analyze an ERP project activity flow chart with self-loop structure, identify the key processes and key paths, and determine the time period. Therefore, the validity and reliability of the method in project process management are verified.

scholarly journals Analisis Risiko Keselamatan dan Kesehatan Kerja Menggunakan Metode Hirarc pada Proses Perbaikan Kapal Tugboat (Studi Kasus PT Marga Surya Shipindo, Samarinda)

2019 ◽  
Vol 3 (1) ◽  
pp. 33
Author(s):  
Willy Tambunan
Keyword(s):  
Risk Assessment ◽  
Human Rights ◽  
Hazard Analysis ◽  
Risk Control ◽  
Hazard Identification ◽  
Risk Level ◽  
Work Activities ◽  
High Category ◽  
Engineering Control ◽  
And Control

<p><em>H</em><em>ealth and safety has been known as one of the requirements in carrying out tasks and a form of human rights factor for workers in carrying out work activities. Lack of awareness and concern for K3 resulted in the existence of work risks, namely the presence of accidents that occur in welding activities carried out on the maintenance of tugboats carried by PT. Margasurya Shipindo like being hit by welding sparks, slipping, touched by hot iron which causes injury to workers. Therefore the purpose of this study is to identify and classify potential hazards, and control risks in work activities at PT. Marga Suryashipindo. Hazard analysis of risk in this study used the Hazard Identification, Risk Assessment, and Risk Control (HIRARC) method. Based on the results of observations and interviews with 3 maitenance workers and 1 maintenance coordinator, there were 22 potential hazards. Based on the risk assessment, the risk level values were not with the HIGH category, 10 risks were MEDIUM category and 12 risk were LOW category. Control of the above risks is to use APD with the standards of welding workers, carry out administrative controls in the form of the application of SOP welding and K3 supervision to evaluate work activities. In addition, Engineering control is also carried out in the form of holding lift aids and doing maintenance on a regular basis, procuring toolsbox, and arranging tools and materials in the welding location.</em><strong><em></em></strong></p>

scholarly journals Analysis And Design Of Application Of Sales And Control Of Stock Of Daily Goods With Rop (Reorder Point) Method

2020 ◽  
Vol 1 (2) ◽  
pp. 142-149
Author(s):  
Annisak Izzaty Jamhur ◽  
Novi Trisna ◽  
Yesri Elva
Keyword(s):  
Information Technology ◽  
Data Processing ◽  
Programming Language ◽  
System Analysis ◽  
Model System ◽  
Point Method ◽  
Inventory Data ◽  
Analysis And Design ◽  
Reorder Point ◽  
And Control

In the era of globalization now developments in the field of information technology are increasingly rapid. No wonder now more and more shops are starting to develop their administrative systems using information technology and one of them is a shop in the field of daily goods. Some stores use various ways to attract as many customers as possible. So that the data processing is slow and shop owners often have difficulty in finding data that has been processed. To provide satisfactory services for customers, it is necessary to reform several systems, including information systems for sales, purchasing, making daily, monthly, annual sales reports, and inventory data reports using the ROP (Reorder Point) method and designing using the ASI model (System Analysis Information), while the process of making a desktop program or application uses the VISUAL BASIC.NET 2010 programming language that is supported by the MySQL database.

Rollover Prevention of Multi-Body Ground Vehicles Extending LQR Design for Control Coupled Output Regulation

2010 ◽  
Author(s):  
Rama K. Yedavalli ◽  
Hsun-Hsuan Huang
Keyword(s):  
Optimal Control ◽  
Optimal Control Problem ◽  
Control Problem ◽  
System Analysis ◽  
Output Regulation ◽  
Analysis And Design ◽  
Rollover Prevention ◽  
Coupled Output ◽  
Multi Body ◽  
And Control

In this paper, a novel control system analysis and design technique is presented by transforming rollover index minimization as an optimal control problem in the popular Linear Quadratic Regulator (LQR) control design framework. This results in a ‘control coupled output regulation’ problem because of the coupled terms in state and control variables in the performance index. There are no guidelines available for the selection of state and control weightings for the coupled case. In this paper, we present considerable insight into the major differences in the optimal control problem formulation for the uncoupled and coupled cases and provide guidelines for weight selections by taking into consideration the interaction (or coupling) between state and control terms and using the property of ‘Output Zeroing’ controller. The proposed analysis and design method is illustrated with rollover prevention control for a multi-body Ground Vehicle using the active steering control and active roll control respectively.

Rancang Bangun Sistem Penerimaan Dan Mutasi Barang Pada PDAM Tirta Kerta Raharja

Sensi Journal ◽  
2020 ◽  
Vol 6 (2) ◽  
pp. 236-246
Author(s):  
Ilamsyah Ilamsyah ◽  
Yulianto Yulianto ◽  
Tri Vita Febriani
Keyword(s):  
System Analysis ◽  
Object Oriented ◽  
Analysis Method ◽  
Web Based ◽  
Visual Modeling ◽  
Long Time ◽  
The Right ◽  
And Control ◽  
Web Based System ◽  
The Web

The right and appropriate system of receiving and transferring goods is needed by the company. In the process of receiving and transferring goods from the central warehouse to the branch warehouse at PDAM Tirta Kerta Raharja, Tangerang Regency, which is currently done manually is still ineffective and inaccurate because the Head of Subdivision uses receipt documents, namely PPBP and mutation of goods, namely MPPW in the form of paper as a submission media. The Head of Subdivision enters the data of receipt and mutation of goods manually and requires a relatively long time because at the time of demand for the transfer of goods the Head of Subdivision must check the inventory of goods in the central warehouse first. Therefore, it is necessary to hold a design of information systems for the receipt and transfer of goods from the central warehouse to a web-based branch warehouse that is already database so that it is more effective, efficient and accurate. With the web-based system of receiving and transferring goods that are already datatabed, it can facilitate the Head of Subdivision in inputing data on the receipt and transfer of goods and control of stock inventory so that the Sub Head of Subdivision can do it periodically to make it more effective, efficient and accurate. The method of data collection is done by observing, interviewing and studying literature from various previous studies, while the system analysis method uses the Waterfall method which aims to solve a problem and uses design methods with visual modeling that is object oriented with UML while programming using PHP and MySQL as a database.

Investigation of Cost-Influencing Factors Potentially ‎Controllable by Main Contractors in Construction Projects in ‎Iraq

2020 ◽  
Vol 38 (7A) ◽  
pp. 1069-1076
Author(s):  
Layth T. Ali ◽  
Raid S. Abid Ali ◽  
Zeyad S. M. Khaled
Keyword(s):  
Construction Projects ◽  
Project Managers ◽  
Cost Overrun ◽  
Public And Private ◽  
Importance Index ◽  
Labor Recruitment ◽  
Supply Planning ◽  
Major Factors ◽  
And Control ◽  
The Impact

Cost overrun in construction projects is a common phenomenon in Iraq. This might occur due to diversity of factors. This study aims to identify the factors influencing construction projects cost that are potentially controllable by main contractors. A field study through a questionnaire survey was directed to a sample of related Iraqi professional engineers from general contracting companies at both public and private sectors. Their opinions on the impact and frequency of each factor were investigated. The questionnaire offered (59) factors classified in (8) categories namely; legislations, financial and economic, design, contractual, site management, material, labor and equipment. The factors were ranked according to the highest Relative Importance Index (RII). The study revealed (10) major factors that are potentially controllable by main contractors namely; labor productivity, sub-contractors and suppliers performance, equipment productivity, site organization and distribution of equipment, experience and training of project managers, scheduling and control techniques, planning for materials supply, planning for equipment supply, materials delivery and planning for skilled labor recruitment. Recommendations to aid contractors and owners in early identification of these factors are also included in this study.

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