A Hazard and Risk Management System for Large Rock Slope Hazards Affecting Pipelines in Mountainous Terrain

Author(s):  
Michael Porter ◽  
Alex Baumgard ◽  
K. Wayne Savigny

Pipelines and other linear facilities that traverse mountainous terrain may be subject to rock fall and rock slide hazards. A system is required to determine which sites pose the greatest hazard to the facility. Once sites are ranked according to hazard exposure, a risk management program involving inspection, monitoring, contingency planning and/or mitigation can be implemented in a systematic and defensible manner. A hazard rating methodology was developed to identify and characterize rock slope hazards above a South American Concentrate Pipeline, and to provide a relative ranking of hazard exposure for the pipeline, an access road and operational personnel. The rating methodology incorporates the geometry of the right-of-way, estimated pipe depth, staff and vehicle occupancy time, failure mechanism and magnitude, and the annual probability of hazard occurrence. This information is used in a risk-based framework to assign relative hazard ratings within rock slope sections of relatively uniform hazard exposure. This paper outlines a general framework for natural hazard and risk management along linear facilities, describes the rock slope hazard rating methodology, and illustrates how the system was applied along a South American Concentrate Pipeline.

Author(s):  
Michael Porter ◽  
K. Wayne Savigny

Hazard identification and rating involve the first two of a four-phase natural hazard and risk management (NHRM) system that is being developed to manage natural hazards along linear facilities. In Canada, completing these first two phases is generally straightforward. Baseline data including air photos, geology and topographic maps are readily available; the number and types of hazard exposure are often limited for any given facility; and, the standard of care expected during design and construction is understood and practiced. The NHRM methodology is also being applied on South American pipelines. Greater flexibility is required in obtaining necessary input data. Helicopter and vehicle access are often more limited, and greater reliance must be placed on airphoto interpretation and literature review. Processes of rating hazard exposure are needed for less familiar hazard types, including tsunami, volcanic eruption, and tectonic ground rupture. South American construction and design practices must be accounted for in the rating methodology. Using examples from recently constructed trans Andean pipelines, this paper outlines application of the NHRM system to linear facilities located in areas of diverse hazard exposure and less stringent design and construction practices. Under the broad headings of ‘geotechnical’ and ‘hydrotechnical’ hazards, a methodology for rating eleven different hazard types is outlined. On the geotechnical side, these include tsunami, volcanic eruption, tectonic ground rupture, landslides and debris flows originating off-rights-of-way, and mass movements originating on rights-of-way. Hydrotechnical hazards include scour, degradation, bank erosion, encroachment, and channel abandonment/avulsion.


2021 ◽  
Author(s):  
Jochen Woessner ◽  
Jessica Velasquez ◽  
Marleen Nyst ◽  
Delphine Fitzenz ◽  
Laura Eads

<p>Megathrust earthquakes along the South American subduction zone where the Nazca plate slips below the South American plate rapidly subducts below the South American plate contribute significantly to the seismic hazard in Chile, Peru, Ecuador and Colombia. Estimating recurrence of the megathrust events is of prime interest not only for securing effective counter measures for engineering purposes, but also for assessing seismic hazard and risk for appropriate disaster risk management solutions in the insurance sector.</p><p>We present an evaluation and interpretation of recent research on the recurrence of megathrust earthquakes along the South America subduction zone. The modelling approach is conceptually founded in the asperity model and in this spirit evidence for documented earthquakes is assembled. We utilize time-independent and time-dependent recurrence models to understand the range and likelihood of recurrence times given the incomplete picture of the seismic history and the impact from uncertain event dates based on paleo-seismic / paleo-tsunami studies. In addition, we illustrate the sensitivity of recurrence rates for the largest earthquakes due to assumptions on seismic coupling and the size of potential ruptures.</p><p>Downstream from the recurrence rate analysis, the results are used to estimate the impact of the subduction interface model seismicity on a select set of exposure subject to earthquake shaking due to those events. These examples highlight the potential range of seismic hazard and risk and set the basis to further constrain disaster risk management solutions. </p>


Author(s):  
Ruslan Skrynkovskyy ◽  
◽  
Oleh Kramar ◽  
Khrystyna Zamula ◽  
Vasyl Khmyz ◽  
...  

The article reveals the features of accounting and analytical support for entrepreneurial risk management. It was found that entrepreneurial risk is a certain act as a result of which the business entity may suffer losses. It is proved that entrepreneurial risks should be classified according to the specifics of origin, the specifics of the legal settlement, the specifics of industry affiliation, the specifics of the consequences, the specifics of the duration of the impact of entrepreneurial risk, the specifics of the expression of will, the specifics of the form, the specifics of the level of typicality, the specifics of the level of validity, the specifics of the possibility of assessing and resolving the impact, the specifics of the possibility of insuring entrepreneurial risks, the specifics of the occurrence of entrepreneurial risks by sources of origin, the specifics of the scale of the impact, the specifics of the level of losses and the specifics of character. It is established that the process of entrepreneurial risk management is the process of managing the activities of the business entity as a whole and its individual parts, and takes into account the management of not only existing risks but also potential entrepreneurial risks in space and time, that may occur in the future during entrepreneurial activities. It is determined that the process of entrepreneurial risk management should take into account the stage of preparation and implementation of appropriate measures to reduce the risk as a result of making erroneous decisions by business entities, the stage of reducing the impact of possible negative consequences that may occur, especially, if the entity operates in unexpected changes and alarming development trends, as well the stage of development and implementation of the Declaration on Risk Management and the Risk Management Program. It is established that the important information on which it is possible to estimate possibility of occurrence of entrepreneurial risks, is the accounting reporting. In the perspective of further research, it is recommended to study entrepreneurial risks in Ukraine in the context of such aspects as causes, consequences and management.


2005 ◽  
Vol 29 (1) ◽  
pp. 22-32 ◽  
Author(s):  
John Miller ◽  
Frank R. Veltri ◽  
Andy Gillentine

One of the best ways for an intramural sports program to ensure that an ordinary and reasonable standard of care is adhered to, as well as guarding against litigation, is communication of a risk management program. While having a risk management plan has been widely stressed, no previous research has been conducted from a participant's viewpoint. Thus, the purpose of this study was to determine the effectiveness of university intramural risk management plans from the participant's perception. The primary results of this study indicate that the majority of the intramural sport participants responded that they had never: a) noticed an intramural supervisor being present while the activity was taking place; b) been informed about the potential for participant injury; c) noticed signage relating to emergency procedures at the area of the activity; d) knew of a risk management plan for intramural sports; d) noticed emergency equipment at the site of the activity; and e) been informed about the possession of First Aid/CPR certification or equivalent by the supervisor.


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