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Suche nach „[J.] [Maiti]“ hat 6 Publikationen gefunden
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    Zeitschriftenartikel

    J. Maiti, Nari Arunraj

    Risk-based Maintenance Policy Selection using AHP and Goal Programming

    Safety Science, vol. 48, no. 2, pp. 238-247

    2010

    DOI: 10.1016/j.ssci.2009.09.005

    Abstract anzeigen

    Maintenance policy selection is a multiple criteria decision making. The criteria often considered are cost and reliability of maintenance. There has been a growing interest in using risk of accidents as a criterion for maintenance selection. This paper presents an approach of maintenance selection based on risk of equipment failure and cost of maintenance. Analytic hierarchy process (AHP) and goal programming (GP) are used for maintenance policy selection. A case study in a benzene extraction unit of a chemical plant was done. The AHP results show that considering risk as a criterion, condition based maintenance (CBM) is a preferred policy over time-based maintenance (TBM) as CBM has better risk reduction capability than TBM. Similarly, considering cost as a criterion, corrective maintenance (CM) is preferred. However, considering both risk and cost as multiple criteria, the AHP–GP results show that CBM is a preferred approach for high-risk equipment and CM for low risk equipment.

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    Zeitschriftenartikel

    J. Maiti, Nari Arunraj

    A methodology for overall consequence modeling in chemical industry.

    Journal of Hazardous Materials, vol. 169, no. 1-3, pp. 556-574

    2009

    DOI: 10.1016/j.jhazmat.2009.03.133

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    Zeitschriftenartikel

    J. Maiti, Nari Arunraj

    Environmental risk management and decision making

    International Journal of Environmental Pollution Control and Management, vol. 1, no. 1, pp. 25-40

    2009

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    Zeitschriftenartikel

    J. Maiti, Nari Arunraj

    Development of Environmental Consequence Index (ECI) using fuzzy composite programming

    Journal of Hazardous Materials, vol. 162, no. 1, pp. 29-43

    2009

    DOI: 10.1016/j.jhazmat.2008.05.067

    Abstract anzeigen

    Estimation of environmental consequences of hazardous substances in chemical industries is a very difficult task owing to (i) diversity in the types of hazards and their effects, (ii) location, and (ii) uncertainty in input information. Several indices have been developed over the years to estimate the environmental consequences. In this paper, a critical literature review was done on the existing environmental indices to identify their applications and limitations. The existing indices lack in consideration of all environmental consequence factors such as material hazard factors, dispersion factors, environmental effects, and their uncertainty. A new methodology is proposed for the development of environmental consequence index (ECI), which can overcome the stated limitations. Moreover, the recently developed fuzzy composite programming (FCP) is used to take care of the uncertainty in estimation. ECI is applied to benzene extraction unit (BEU) of a petrochemical industry situated in eastern part of India. The ECI for all the eight sections of BEU are estimated and ranked. The results are compared with well-established indices such as Dow fire and explosion index, safety weight hazard index (SWeHI), and environmental accident index (EAI). The proposed ECI may outperform other indices based on its detailed consideration of the factors and performed equally to Dow F&E index, and EAI in most of the cases for the present application.

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    Zeitschriftenartikel

    J. Maiti, Nari Arunraj

    Risk-based maintenance—Techniques and applications

    Journal of Hazardous Materials, vol. 142, no. 3, pp. 653-661

    2007

    DOI: 10.1016/j.jhazmat.2006.06.069

    Abstract anzeigen

    Plant and equipment, however well designed, will not remain safe or reliable if it is not maintained. The general objective of the maintenance process is to make use of the knowledge of failures and accidents to achieve the possible safety with the lowest possible cost. The concept of risk-based maintenance was developed to inspect the high-risk components usually with greater frequency and thoroughness and to maintain in a greater manner, to achieve tolerable risk criteria. Risk-based maintenance methodology provides a tool for maintenance planning and decision making to reduce the probability of failure of equipment and the consequences of failure. In this paper, the risk analysis and risk-based maintenance methodologies were identified and classified into suitable classes. The factors affecting the quality of risk analysis were identified and analyzed. The applications, input data and output data were studied to understand their functioning and efficiency. The review showed that there is no unique way to perform risk analysis and risk-based maintenance. The use of suitable techniques and methodologies, careful investigation during the risk analysis phase, and its detailed and structured results are necessary to make proper risk-based maintenance decisions.

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    Beitrag (Sammelband oder Tagungsband)

    J. Maiti, Nari Arunraj

    Risk-based maintenance - Techniques and applications

    Proceedings of the Mary Kay O'Connor Process Safety Center 2005 International Symposium 'Beyond Regulatory Compliance, Making Safety Second Nature' (October 25th-26th 2005, Reed Arena, Texas A&M University, College Station, TX, USA)

    2005