scholarly journals Contractors' strategic approaches to risk assessment techniques at project planning stage

2011 ◽  
Author(s):  
Afzan Ahmad Zaini ◽  
Roshana Takim ◽  
Intan Rohani Endut
Keyword(s):  
Risk Assessment ◽  
Project Planning ◽  
Planning Stage ◽  
Assessment Techniques

Quantitative Risk Assessment for Projects Schedules

2012 ◽  
Author(s):  
Sherif S. Hassanien ◽  
Jason B. Skow
Keyword(s):  
Risk Assessment ◽  
Time Allocation ◽  
Market Research ◽  
Epistemic Uncertainty ◽  
Project Planning ◽  
Quantitative Risk Assessment ◽  
Success Rates ◽  
Project Schedule ◽  
Planning Stage ◽  
Expected Benefits

Despite vigilant efforts in project scheduling and planning by engineers and project managers, recent market research reported a marked decrease in project success rates. The market research tracked projects across a broad range of industries and concluded the primary failure causes to be a lack of sufficient detail in the project planning stage, poor or no risk analysis, scope creep and poor communication. This paper focuses on a strategy to minimize the first cause. Specifically, how to obtain sufficient schedule and resource estimates to better predict time allocation and expected costs with a focus on capital pipeline projects. To this end, a quantitative risk assessment (QRA) methodology is applied to project schedules allowing the uncertainty of key task durations and/or costs to be fully accounted for in the schedule. Projects managers will be able to quantify the uncertainty in their projects and support decision makers with a more accurate prediction of the likelihood of being on time and on budget. This paper introduces a systematic approach for both aleatory and epistemic uncertainty quantification. In addition, the expected benefits of adopting QRA for projects schedules are discussed through a hypothetical simple project schedule from the pipeline industry.

Evaluation of Microbial Risk Assessment Techniques and Applications

2015 ◽  
Vol 3 (0) ◽  
pp. 9781780404141-9781780404141
Author(s):  
J. A. Soller ◽  
A. W. Olivieri ◽  
J. N. S. Eisenberg ◽  
R. Sakajii ◽  
R. Danielson
Keyword(s):  
Risk Assessment ◽  
Microbial Risk Assessment ◽  
Microbial Risk ◽  
Assessment Techniques

Repowering and Retrofitting

2002 ◽  
Author(s):  
Andreas Pickard
Keyword(s):  
Steam Turbine ◽  
Power Plants ◽  
Free Market ◽  
Leading Edge ◽  
Project Planning ◽  
Combined Cycle ◽  
Steam Turbines ◽  
Planning Stage ◽  
Reheat Steam ◽  
Plant Optimization

At the start of this new century, environmental regulations and free-market economics are becoming the key drivers for the electricity generating industry. Advances in Gas Turbine (GT) technology, allied with integration and refinement of Heat Recovery Steam Generators (HRSG) and Steam Turbine (ST) plant, have made Combined Cycle installations the most efficient of the new power station types. This potential can also be realized, to equal effect, by adding GT’s and HRSG’s to existing conventional steam power plants in a so-called ‘repowering’ process. This paper presents the economical and environmental considerations of retrofitting the steam turbine within repowering schemes. Changing the thermal cycle parameters of the plant, for example by deletion of the feed heating steambleeds or by modified live and reheat steam conditions to suit the combined cycle process, can result in off-design operation of the existing steam turbine. Retrofitting the steam turbine to match the combined cycle unit can significantly increase the overall cycle efficiency compared to repowering without the ST upgrade. The paper illustrates that repowering, including ST retrofitting, when considered as a whole at the project planning stage, has the potential for greater gain by allowing proper plant optimization. Much of the repowering in the past has been carried out without due regard to the benefits of re-matching the steam turbine. Retrospective ST upgrade of such cases can still give benefit to the plant owner, especially when it is realized that most repowering to date has retained an unmodified steam turbine (that first went into operation some decades before). The old equipment will have suffered deterioration due to aging and the steam path will be to an archaic design of poor efficiency. Retrofitting older generation plant with modern leading-edge steam-path technology has the potential for realizing those substantial advances made over the last 20 to 30 years. Some examples, given in the paper, of successfully retrofitted steam turbines applied in repowered plants will show, by specific solution, the optimization of the economics and benefit to the environment of the converted plant as a whole.

Development of risk assessment techniques for use in the field of explosives and ammunition

1989 ◽  
Vol 7 (1-2) ◽  
pp. 1-28
Author(s):  
F Cantrell ◽  
J Clifton ◽  
J N Edmondson ◽  
F R Hartley ◽  
P D Michell ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Assessment Techniques

The measurement problem of calibration of measuring instrument under specified conditions

2021 ◽  
pp. 9-15
Author(s):  
Sergey F. Levin
Keyword(s):  
Risk Assessment ◽  
Risk Management ◽  
Measurement Problem ◽  
Parametric Identification ◽  
Correction Function ◽  
Measuring Instruments ◽  
Measuring Instrument ◽  
Mathematical Apparatus ◽  
Second Stage ◽  
Assessment Techniques

The problem of calibration of measuring instruments for given conditions based on the correction function is considered as a measurement problem of structural-parametric identification of the calibration diagram. It is shown, that the correction function allows at the first stage to obtain a ratio for correcting the readings, and at the second stage to obtain a corrected measurement result, it is necessary to identify the probability distribution of possible deviations from it. An example of solving the measurement problem of calibration for given conditions is given. Negative aspects of the practice of calibration of measuring instruments are noted: carrying out calibration under normal conditions according to the methods of verification of measuring instruments; presentation of calibration results by tables of joint readings of measuring instruments and standards; the presence in the calculations of the calibration diagram of significant restrictions on the mathematical apparatus of the «Guidelines for the expression of measurement uncertainty», specified by ISO/IEC 31010:2019 “Risk management – Risk assessment techniques”.

A Comprehensive Literature Review on Construction Project Risk Analysis

2016 ◽  
Vol 5 (4) ◽  
pp. 1-15 ◽  
Author(s):  
Ermias Tesfaye ◽  
Eshetie Berhan ◽  
Daniel Kitaw
Keyword(s):  
Risk Assessment ◽  
Meta Analysis ◽  
Construction Project ◽  
Assessment Tools ◽  
Research Gaps ◽  
The Past ◽  
Comprehensive Literature Review ◽  
Risk Assessment Tools ◽  
Assessment Techniques ◽  
Project Risk Analysis

The purpose of this paper is to present the chronological development of risk assessment techniques and models undertaken in construction project for the past two decades. This research used a systematic review and meta-analysis on risk assessment of construction project literatures. This includes browsing relevant researches and publications, screening articles based on the year of publication, identifying the domains and attributes. Accordingly, findings of major results achieved have been presented systematically based on the chronology of the research and research gaps are identified. From the review, it is found out that the dominant risk assessment tools used for the past twenty years is statistical analysis and fuzzy expert system.

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