scholarly journals Research on Fast Semi-Quantitative Risk Assessment Method for High Temperature and High Pressure Gas Wells

2021 ◽  
Vol 09 (01) ◽  
pp. 100-108
Author(s):  
Mifeng Zhao ◽  
Hailong Geng ◽  
Jingcheng Zhang ◽  
Junfeng Xie ◽  
Kelin Wang
Keyword(s):  
Risk Assessment ◽  
High Pressure ◽  
High Temperature ◽  
Assessment Method ◽  
Quantitative Risk Assessment ◽  
Gas Wells ◽  
Risk Assessment Method

An intelligent quantitative risk assessment method for ammonia synthesis process

2021 ◽  
Vol 420 ◽  
pp. 129893
Author(s):  
Zijian Liu ◽  
Wende Tian ◽  
Zhe Cui ◽  
Honglong Wei ◽  
Chuankun Li
Keyword(s):  
Risk Assessment ◽  
Ammonia Synthesis ◽  
Assessment Method ◽  
Quantitative Risk Assessment ◽  
Synthesis Process ◽  
Risk Assessment Method

Validating ecological risk assessments for fisheries: assessing the impacts of turtle excluder devices on elasmobranch bycatch populations in an Australian trawl fishery

2006 ◽  
Vol 57 (4) ◽  
pp. 395 ◽  
Author(s):  
Shane P. Griffiths ◽  
David T. Brewer ◽  
Don S. Heales ◽  
David A. Milton ◽  
Ilona C. Stobutzki
Keyword(s):  
Risk Assessment ◽  
Ecological Risk ◽  
Absolute Risk ◽  
Assessment Method ◽  
Quantitative Risk Assessment ◽  
Trawl Fishery ◽  
Recovery Potential ◽  
Risk Assessment Method ◽  
Fishing Impacts ◽  
The Impact

Demonstrating ecological sustainability is a challenge for fisheries worldwide, and few methods can quantify fishing impacts on diverse, low value or rare species. The current study employed a widely used ecological risk assessment method and incorporated new data to assess the change in sustainability of species following the introduction of Turtle Excluder Devices (TEDs) in Australia’s Northern Prawn Fishery (NPF). Population recovery ranks changed for 19 of the 56 elasmobranch species after the introduction of TEDs, with nine species showing an increase in sustainability. Unexpectedly, ten species showed a decrease in sustainability. This was due to TEDs successfully excluding large animals from the catch, resulting in a lower mean length at capture, which reduced the recovery ranks for two criteria relying on length data. This falsely indicates that TEDs increase the impact on pre-breeding animals, thus reducing the recovery potential of these species. The results demonstrate that existing attribute-based risk assessment methods may be inadequate for reflecting even the most obvious changes in fishing impacts on bycatch species. Industry and management can benefit greatly from an approach that more accurately estimates absolute risk. The development and requirements of a new quantitative risk assessment method to be developed for the NPF, and applicable to fisheries worldwide, are discussed.

scholarly journals Risk Assessment of Petroleum Transportation Pipeline in Some Turkish Oil Fields

2004 ◽  
Author(s):  
Gokcen Ogutcu ◽  
Serhat Akin
Keyword(s):  
Risk Factors ◽  
Risk Assessment ◽  
History Matching ◽  
Assessment Method ◽  
Oil Field ◽  
Third Party ◽  
Quantitative Risk Assessment ◽  
Failure Data ◽  
Risk Assessment Method ◽  
Pipeline Systems

This study concentrates on risk factors in oil field pipeline systems and covers identification of failure rate and reasons of failure comparison of the failure data, which are collected from oilfield pipeline systems located in South East Turkey. There are many methods and techniques to reduce or eliminate risk factors in pipeline systems. In this study, quantitative risk assessment method, which depends on statistical calculations, was applied. Monte Carlo Simulation was used to assess the risk in the system. This study focuses on identification of relationship between all parameters. History matching frequency, identification of critical factors, probability of density function have been estimated and calculated. The most significant failures are identified as corrosion, third party damage, mechanical failure, operational failure, weather effect and sabotage.

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