Defense-in-depth revisited: qualitative risk analysis methodology for complex network-centric operations

2002 ◽  
Author(s):  
T. Bass ◽  
R. Robichaux
Keyword(s):  
Risk Analysis ◽  
Complex Network ◽  
Analysis Methodology ◽  
Defense In Depth ◽  
Network Centric Operations ◽  
Qualitative Risk Analysis

A Common Approach to Risk Analysis Methodology

2003 ◽  
Author(s):  
J. Robert Sims
Keyword(s):  
Resource Allocation ◽  
Risk Analysis ◽  
Broad Spectrum ◽  
Analysis Methodology ◽  
Risk Ranking ◽  
Homeland Defense ◽  
Narrow Area ◽  
Allocation Decisions ◽  
Resource Allocation Decisions

Risk analysis has been used extensively to inform decisions throughout government and industry for many years. Many methodologies have been developed to perform these analyses, resulting in differences in terminology and approach that make it difficult to compare the results of an analysis in one field to that in another. In particular, many approaches result only in a risk ranking within a narrow area or field of interest, so the results cannot be compared to rankings in other areas or fields. However, dealing with terrorist threats requires prioritizing the allocation of homeland defense resources across a broad spectrum of possible targets. Therefore, a common approach is needed to allow comparison of risks. This presentation summarizes an approach that will allow the results of risk analyses based on using current methodologies to be expressed in a common format with common terminology to facilitate resource allocation decisions.

Arctic Offshore Loading Downtime Due to Variability in Ice Drift Direction

2005 ◽  
Vol 59 (1) ◽  
pp. 9-26
Author(s):  
Basile Bonnemaire
Keyword(s):  
Risk Analysis ◽  
Ice Drift ◽  
Ice Conditions ◽  
Qualitative Risk Analysis ◽  
Drift Direction

Four arctic offshore loading concepts are selected, loading from the corner of a platform, loading in the wake of a loading tower, Submerged Turret Loading (STL) and Single Anchor Loading (SAL). The influence of variations in the ice drift direction on the performance of these concepts is discussed and critical drift events are determined. Ice drift measurements from eight ARGOS/GPS buoys deployed in the Pechora Sea in winters 1995 and 1998 are analysed to estimate downtime rates of these loading systems due to ice drift heading changes. Depending on the location in the Pechora Sea and the chosen concept, downtime rates range from 6 to 72%. A discussion on how these rates will vary with different assumptions, different ice conditions or different ice management is given. Finally the loading concepts are compared through a qualitative risk analysis.

scholarly journals ASESMEN KOROSI & ANALISIS RISIKO KUALITATIF PADA VERTIKAL BEJANA TEKAN

2021 ◽  
Vol 8 (2) ◽  
pp. 63-72
Author(s):  
Amam Fachrur Rozie ◽  
D.N Adnyana
Keyword(s):  
Risk Analysis ◽  
Corrosion Rate ◽  
Pressure Vessel ◽  
Atmospheric Corrosion ◽  
Uniform Corrosion ◽  
Vertical Pressure ◽  
Qualitative Risk Analysis ◽  
Non Destructive ◽  
Design Pressure

Keselamatan dan keamanan dalam penggunaan bejana tekan sangat penting dan hal utama dalam penggunaan bejana tekan, terlebih lagi jika bejana tekan tersebut sudah melewati umur desain nya. Penelitian ini bertujuan untuk menilai kelayakan kondisi terkini dari suatu bejana tekan vertikal (vertical pressure vessel) yang telah beroperasi sejak tahun 1970 tetapi berhenti beroperasi pada tahun 2011. Pendekatan penilaian pada bejana tekan vertikal ini berbasis pada metode penilaian korosi dan risiko secara kualitatif. Selain itu juga dipergunakan metode-metode lain dalam aspek penilaian nya seperti visual inspeksi, laju korosi (corrosion rate), Non-Destructive Examination (NDE), software calculation dan analisa risiko kualitatif (qualitative risk analysis). Dari hasil observasi dan inspeksi di dapat tekanan desain (design pressure) adalah 7 kg/cm2, Temperatur desain (design temperature) adalah 61°C dengan material konstruksi adalah SA-283 Gr. C dan standard & code yang dipergunakan adalah ASME Sect. VIII Div. 1 dan API 510 serta beberapa standard & code lainnya. Dari hasil kajian dan kalkulasi di lapangan, maka didapat faktor penyebab kerusakan yang kemungkinan terjadi adalah atmospheric corrosion & uniform corrosion dengan nilai laju korosi adalah sebesar 0,127mm/yr dan tingkat risiko dari bejana tekan vertikal ini masuk dalam kategori 2D yang artinya adalah medium-high dengan maksimal umur pakai sampai usia 27 tahun untuk top head dan 24 tahun dan bottom head serta 23 tahun untuk shell. Sehingga dapat disimpulkan bahwa bejana tekan ini masih aman dan layak dipergunakan dengan batasan-batasan di atas.

Decision Support Model for Fire Insurance Risk Analysis in a Petrochemical Case Study

2015 ◽  
pp. 990-1004
Author(s):  
Hadis Z. Nejad ◽  
Reza Samizadeh
Keyword(s):  
Decision Support ◽  
Risk Analysis ◽  
Oil And Gas ◽  
Oil Refinery ◽  
Decision Support Model ◽  
Analysis Methodology ◽  
Damage Costs ◽  
Fire Insurance ◽  
Margin Of Error

A decision support system was researched and applied to a case study in the petrochemical industry. The participants were an insurance company underwriting the policies of oil and gas refineries located in a major oil producing nation. The Chemical Process Quantitative Risk Analysis methodology was applied as a framework to implement uncertainty quantification and risk analysis using a specialized commercial DSS software product. A gas vapor explosion was simulated at an oil refinery, to predict the fire and radiation damage. Costs and risks were entered into the model based on historical data. Loss estimates were generated for equipment and buildings located various distances (pressures) from the explosion origin. Overall, the DSS model predicted an expected loss of over $14,000,000 USD for equipment located in the 50 meter explosion radius, which represented a loss ratio of almost 52%. The losses predicted from the DSS model were comparable to the literature and to experiences of the case study company. The margin of error from the DSS model was less than ±5% which made it very reliable according to benchmarks.

scholarly journals Cost effectiveness indicators of residential complex construction project

2019 ◽  
Vol 91 ◽  
pp. 08060
Author(s):  
Pavel Morozovskiy ◽  
Denis Muradov ◽  
Anastasia Udalova ◽  
Natalia Samosudova ◽  
Dmitriy Spitsov
Keyword(s):  
Cost Effectiveness ◽  
Risk Analysis ◽  
Construction Project ◽  
Organization Of Work ◽  
Complex Construction ◽  
Qualitative Risk Analysis ◽  
Different Order

The article presents the variant of optimization of the project of construction of a residential complex. The study includes the decomposition of the complex into specialized types of work, the preparation of matrices of the works’ volumes, the calculation of the duration of construction, the calculation of methods of organization of work in different order, the calculations of the estimated cost of objects. A qualitative risk analysis of the project was carried out.

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