| 1. |
- Balindres, Anecito Reyes, et al.
(författare)
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Effects of Arctic Conditions on Human Performance
- 2016
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Ingår i: Advances in Physical Ergonomics and Human Factors. - London : Encyclopedia of Global Archaeology/Springer Verlag. - 9783319416939 - 9783319416946 ; , s. 657-663
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Konferensbidrag (refereegranskat)abstract
- Modern technologies are used to create competitive performance in industry, and highly specialized personnel are often needed to operate and maintain the technology. However, both the technology and the personnel are influenced by the environment in which the technologies are operated. In this paper we study how human performance is influenced by an Arctic environment in conjunction with a remote location. Based on a literature study, we map Arctic factors and study how they affect human performance in remote locations. The results show that operational and maintenance personnel may be significantly affected by the Arctic conditions. If not taken into consideration during the design phase, human and organizational performance may be significantly affected. Examples are discussed in relation to petroleum production in Arctic locations north of Norway
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| 2. |
- Barabadi, Abbas, et al.
(författare)
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Reliability and spare parts estimation considering operational environments : a case study
- 2012
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Konferensbidrag (refereegranskat)abstract
- Spare parts provision is a complex problem andrequires an accurate model to analysis all factors that mayaffect the required number of spare parts. The number ofspare parts required can be effectively estimated based onthe reliability performance of the item. The reliabilitycharacteristics of an item are influenced not only by theoperating time, but also by factors such as the operationalenvironment. Therefore, for spare parts provisioning to beeffective, the impact of these influence factors on thereliability performance of the item should be quantified.Hence, the statistical approach selected for reliabilityperformance analysis must be able to handle the effect ofthese factors. One of the important models for reliabilityperformance analysis that takes influence factors intoaccount is the proportional hazard model (PHM), which hasreceived less attention in the field of spare partsprovisioning. In this paper the application of PHM to spareparts provision is discussed and demonstrated by a casestudy.
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| 3. |
- Barabady, Javad, et al.
(författare)
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A framework for improvement of production plant performance using production assurance programs
- 2010
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Ingår i: International Journal of Systems Assurance Engineering and Management. - : Springer Science and Business Media LLC. - 0975-6809 .- 0976-4348. ; 1:1, s. 59-65
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Tidskriftsartikel (refereegranskat)abstract
- The main objective of a production assurance program (PAP) for a production plant is to ensure that the planned production capacity is achieved. The assurance programs describe the activities necessary to fulfil the objectives, how they will be carried out, by whom, and when. These activities also provide input to decisions-making regarding design, manufacturing, construction, installation, operation, and maintenance of plants. It is a challenge to manage and improve production assurance. The aim of this paper is to present and discuss a methodology for improvement of production assurance performance through PAP, organized into four steps, namely data collection and information management, modeling and data analysis, generation of improvement alternatives and evaluation and decision-making.
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| 4. |
- Barabady, Javad, et al.
(författare)
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Improvement of production plant performance using production assurance programs
- 2007
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Konferensbidrag (refereegranskat)abstract
- There is an increased use of production assurance programmes in Oil and Gas industries. The programme describes the production assurance activities necessary to fulfill the objectives, how they will be carried out, by whom and when. The activities provide input to decisions regarding concept, design, manufacturing, construction, installation, operation and maintenance. It is a challenge to manage and improve production assurance. The aim of this paper is to present and discuss a methodology for improvement of production assurance performance. The proposed methodology consists of four steps. These steps are i) data collection and information management; ii) modeling and data analysis; and iii) generate improvement alternatives; and iv) evaluation alternatives and decision making.
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| 5. |
- Barabady, Javad, et al.
(författare)
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Review and discussion of production assurance program
- 2010
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Ingår i: International Journal of Quality & Reliability Management. - : Emerald. - 0265-671X .- 1758-6682. ; 27:6, s. 702-720
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Tidskriftsartikel (refereegranskat)abstract
- Purpose - The purpose of this paper is to review, discuss and further develop the production assurance (PA) concept; and to define and describe a typical production assurance program (PAP) and its elements. Design/methodology/approach - An explorative literature study covering PA and dependability concept was carried out on contemporary literature. During the course of the study, meetings and discussions with a number of experts in Sweden and Norway were performed. Different types of data and examples from the oil and gas industries are used to illustrate and support the discussions. Findings - This paper indicates that the concept of PA helps the decision maker to estimate whether a production plant is able to meet customer requirements, as it provides information about the production plant's delivery capacity, production rate and ability to deliver according to design or customer demands. PAP can provide a basis for effective production control. Research limitations/implications - The material analysed was mainly related to the oil and gas industry. However, the findings and discussion can be transferred to other areas of application, such as mine production plants and chemical process plants. Practical implications - A PAP is a valuable tool for production plant managers and engineers, not only for documenting a production plant's performance, but also for providing decision support for the development and optimization of the production plant to improve the plant's performance and reduce risk and uncertainties. Originality/value - In this paper the concept of dependability is extended to include capacity performance and customer requirements or market demand, which provides a measure for delivery assurance or plant production performance in relation to customer requirements. This paper also develops a generic PAP to achieve a high level of delivery assurance.
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| 6. |
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| 7. |
- Ghodrati, Behzad, et al.
(författare)
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Enhancement of mining machineries performance through supportability
- 2011
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Ingår i: International Journal of COMADEM. - 1363-7681. ; 14:2, s. 35-43
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Tidskriftsartikel (refereegranskat)abstract
- Cost analysis of mining operations in general shows that 30 to 50 percent of direct mining costs are related to maintenance and losses related to lost production during equipment downtime. To reduce these losses one first needs to improve the equipment reliability and thereafter to reduce the downtime losses through improved maintainability and supportability. The mining operational environment is often harsh and may severely impact all three of these abilities. In this paper we focus on how to improve the estimation of spare parts by taking into account the operating environment in the estimation models. By having better models to predict spare parts needs, one can avoid logistics delays and thereby reduce downtime. In this study we develop an improved statistical-reliability (S-R) analysis approach that take into account the system/ machine operating environment. The analysis approach is multiple regressions based on Cox’s proportional hazards modeling (PHM). Subsequently, in a case study, the management of the spare parts inventory based on the economic order quantity and required performance of the product is addressed.
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| 8. |
- Kayrbekova, Dina, et al.
(författare)
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Activity based life cycle analysis as an alternative to conventional LCC in engineering design
- 2011
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Ingår i: International Journal of Systems Assurance Engineering and Management. - : Springer Science and Business Media LLC. - 0975-6809 .- 0976-4348. ; 2:3, s. 218-225
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Tidskriftsartikel (refereegranskat)abstract
- Petroleum exploration and production in the Arctic region is becoming of increasing interest as the world needs more energy. However, since there is little experience and data on Arctic oil and gas production, the design of production facilities and equipment to be used in the Arctic region is fraught with high cost and risk. Conventional life cycle costing (LCC) approaches have been discussed in literature for many years, but it is difficult to perform such analysis due to the need of large amount of data and the inherent uncertainty in the results. There also is little evidence in the literature on practical usage of LCC. In this paper we discuss the differences between conventional LCC and activity-based LCC (AB-LCC) cost systems. Moreover, based on an analytical comparison between the two methodologies we find that the AB-LCC methodology may be a better alternative to use for cost analysis in the design of production facilities to be used in unfamiliar environments such as the Arctic. A simple numerical example is used to demonstrate the differences between conventional LCC and AB-LCC analysis.
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| 9. |
- Kayrbekova, Dina, et al.
(författare)
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Life cycle cost modeling in oil and gas production facilities in harsh, remote and sensitive environments
- 2008
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Konferensbidrag (refereegranskat)abstract
- Design of oil and gas production facilities in harsh, remote and sensitive environments pose a challenge for companies. Several life cycle cost (LCC) analysis methodologies are in use, but due to new design constraints imposed by the location, the climate as well as governmental regulations concerning pollution and protection of the environment in general, these methodologies are not easy to apply. The goal is to apply the LCC concept and to design for operational, maintenance and support service strategies to reduce risks. This paper discusses issues of life cycle cost analysis applied to operations, maintenance and support of an advanced, complex and integrated offshore oil and gas production plant to be used in harsh, sensitive and remote environments. The challenges influencing the life cycle cost analysis of such a facility is identified and discussed. An improved version of LCC analysis called activity-based LCC is addressed as well. The focus is on the design of an offshore production facility to be used in the Goliat oil and gas field located in the southern Barents Sea in the north of Norway.
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| 10. |
- Kumar, Rupesh, et al.
(författare)
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Comparing Psychosocial Factors Associated with Job Stress Among Administrative Staff and Cleaners
- 2016
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Ingår i: Advances in Physical Ergonomics and Human Factors. - London : Encyclopedia of Global Archaeology/Springer Verlag. - 9783319416939 - 9783319416946 ; , s. 1013-1022
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Konferensbidrag (refereegranskat)abstract
- In this study the Swedish version of the Demand—Decision Latitude—Social support model was used. A total of 40 administrative staff and 40 cleaners participated. Demands and decision latitude scores were significantly higher in the administrative staff than in the cleaners. Social support scores were not significantly different between the administrative group and the group of cleaners. Psychological demands and skill discretion differed between the two working groups. The administrative staff’s perception of higher work demand and better decision latitude may be based on their belief that they possess appropriate education, general knowledge and detailed information about their work. Both groups had similar social support scores; it may be that members of both groups felt that they work as a group or team where their proximity fostered this perception of group social support
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