Meeting the Geohazards Management Guidelines of Annex N

Author(s):  
Martin Zaleski ◽  
Tom Greaves ◽  
Jan Bracic

The Canadian Standards Association’s Publication Z662-07, Annex N provides guidelines for pipeline integrity management programs. Government agencies that regulate pipelines in Alberta, British Columbia and other Canadian jurisdictions are increasingly using Annex N as the standard to which pipeline operators are held. This paper describes the experience of Pembina Pipeline Corporation (Pembina) in implementing a geohazards management program to fulfill components of Annex N. Central to Pembina’s program is a ground-based inspection program that feeds a geohazards database designed to store geotechnical and hydrotechnical site information and provide relative rankings of geohazard sites across the pipeline network. This geohazard management program fulfills several aspects of the Annex, particularly: record keeping; hazard identification and assessment; risk assessment and reduction; program planning; inspections and monitoring; and mitigation. Pembina’s experience in growing their geohazard inventory from 65 known sites to over 1300 systematically inspected and catalogued sites in a span of approximately two years is discussed. Also presented are methods by which consultants and Pembina personnel contribute to the geohazard inspection program and geohazard inventory, and how the ground inspection observations trigger follow-up inspections, monitoring and mitigation activities.

2013 ◽  
Vol 376 ◽  
pp. 468-475 ◽  
Author(s):  
J. Sripathi Raja ◽  
M. Siva Prakash ◽  
N. Vellaichamy ◽  
K.L. Senthil Kumar ◽  
K. Palani

Chassis assemblies in any automobile industries are vulnerable to several hazards. In order to reduce the hazards we need to study and carry out Hazard Identification & Risk Assessment in New Chassis assembly to provide engineering solutions for preventing Accidents / dangerous occurrences and to evaluate the Risk. We have conducted many inspections and observation in the chassis assembly of an automobile industry. From our observations and findings we identified nearly 20 intolerable risks in the chassis line, for which the intolerable risks are converted into tolerable through small projects and those which cannot be converted are reduced through Safe Job Procedures (SJP). All the significant risks are controlled by Occupational Health & Safety Management Program, Standard operating procedures & Operation Control Procedure. From the project, the hazard is minimized or eliminated which ensures safety in the assembly line as well as the safety of workers.


Author(s):  
Carl E. Jaske ◽  
Michiel P. H. Brongers

This paper reviews the basic elements of a facility integrity management program and describes the process used to assess risk conditions related to a facility. The policies, goals and objectives of the program should be defined before implementing it. The location and details of the facility and all its equipment must be described and the information should be recorded in a computerized database. Important triggers for change management and the minimum features of change management are reviewed. Ensuring the competency and training of personnel responsible for integrity management is essential. The integrity management team must identify hazards associated and ways of controlling them. Once hazards are identified, risk assessment is performed and options for reducing risk are considered. Results of the risk assessment are then used to plan and execute activities of the integrity management program. Needed repairs or replacements are identified, planned and completed. Finally, the integrity management program should incorporate a continuous improvement process and information from investigations of incidents at the facility, at other company locations, and within the industry.


Author(s):  
Iain R. Colquhoun ◽  
Evelyn Choong ◽  
Richard Kania ◽  
Ming Gao ◽  
Pat Wickenhauser

When the benefits of using risk-based decision making in pipeline integrity management programs have been identified, operators are immediately faced with the challenge of large amounts of risk analysis work. This work frequently has to be done with minimum resources and/or in logistic situations that require a graduated approach extending over several years. In answering this challenge, a starting point must be identified that focuses resources where the risks are greatest. Since these locations are generally unknown in the first instance, the need exists to have a tool available to perform a first or high-level assessment to identify areas requiring further or more detailed study to support the integrity management program. The need also exists to have a robust tool that can be used to direct the assessments of smaller lines that might not require the detailed attention generally given to larger diameter transmission lines. This paper describes the extension of a simple indexing methodology comprising both theoretical and historical components to produce such a tool. It describes the use of so-called “smart” defaults to account for missing data, and a rudimentary decision model that can be used to grade the risk results. Examples are given of applications of the methodology to a gathering system and to the high-level evaluation of a transmission system. The paper also compares the results obtained to other, more detailed methodologies.


Duazary ◽  
2020 ◽  
Vol 17 (3) ◽  
pp. 54-69
Author(s):  
Yordán Rodríguez-Ruíz ◽  
Elizabeth Pérez-Mergarejo ◽  
Walter Alejandro Barrantes-Pastor

The incidence and prevalence of work-related musculoskeletal disorders is currently one of the most important challenges facing the mining sector. This paper proposes a procedure to prevent these diseases, based on the active participation of workers. The procedure was structured in four stages: hazard identification, risk assessment, proposal of improvements, and implementation and follow-up. To support the application of the procedure, a set of ergonomic methods and tools appropriate for mining work were proposed. The main results of the application of the procedure in an underground mine in Peru are shown, demonstrating its practical value, as well as its usefulness in the improvement of working conditions and in the creation of a preventive culture. The proposed procedure is expected to serve as a reference in the prevention of musculoskeletal disorders in mining works.


Author(s):  
Wasial Khusni ◽  
Fitri Nur Mahmudah

School is one of the educational institutions where the teaching and learning process takes place to educate the nation's generation. As a leader, the principal plays an essential role in determining policy. The policy was the aim to make schools more competitive. For this reason, the principal must be able to develop it into an effective school. The purpose of this study is to know the principal's managerial abilities in developing effective schools. This research uses a qualitative method and descriptive approach, analyzed using Analysis Interactive. The results of this study that school managerial ability in developing effective schools are by following the procedures, first, planning programs include; the planning process; and the strategy of designing program planning. Second, the program implementation, including; sharing tasks and routine explanation regarding work and responsibilities, building communication with all school residents properly, motivation colleagues to work effectively and efficiently in achieving goals, running managerial based on school management guidelines, managing human resources, managing relationships with parents and society, overcoming constraints in managerial. Third, program evaluation, including; evaluation methods, follow-up programs, matters discussed in evaluation, and influence perceived after evaluation.


2020 ◽  
Vol 142 (6) ◽  
Author(s):  
Mingjiang Xie ◽  
Jeff Sutherland ◽  
Bingyan Fang ◽  
Bill Gu ◽  
Zhigang Tian

Abstract Integrity planning methods and inline inspection (ILI) tool performance have a great impact on a pipeline integrity management program. In pipeline integrity planning, risk and integrity assessments are performed to schedule integrity activities like ILI for the purpose of reducing risks and ensuring reliable and safe operations. In this paper, a method is developed for analyzing the impact of ILI tool accuracy on pipeline integrity planning, which is of great importance but has not been systematically studied before. Crack inspection and threat of fatigue cracking are used as the working case for the analysis, although the approach could potentially be used for any pipeline threat type. The Paris' law degradation model is used for the crack growth and subsequent severity and risk assessment. We investigated the impact of ILI tool accuracy on the cost rate, as well as the associated inspection intervals. The impact on long-term cost rate was also investigated considering new defect generation and continuous growth. Sensitivity analyses were performed. The optimal inspection intervals and the corresponding total cost rates with respect to different ILI tool accuracy and different input parameters were obtained and compared. The proposed method can support integrity management program planning by linking risks with integrity plan costs associated with ILI accuracy and optimal re-assessment intervals. The contributions of this paper mainly include the investigation of the problem of how ILI tool accuracy impacts integrity planning, the development of the method for analyzing pipelines with cracks, and the verification and validation with the examples.


Author(s):  
Aleksandar Tomic ◽  
Shahani Kariyawasam

Risk Assessment is an integral part of an Integrity Management Program (IMP), and it is generally the first step in most IMPs. Risk is of the product of two variables, the likelihood of failure and the consequence of failure, where failure is defined as a loss of containment event. Hence, it is necessary to calculate both variables in order to accurately model risk. To assess risk, criterion need to be established and the actual risk needs to be compared to the criterion in order to determine the acceptability of risk. Currently, most industry risk assessment models are qualitative risk models, where consequence is generally characterized by class, relative population measures, or some other relative measure. While this may be adequate for some relative risk ranking purposes, it is generally not accurate in representing the true consequences and the arbitrary nature leads to overly conservative or overly un-conservative results. Conversely, Quantitative Risk Assessment (QRA) models take into account the effect of the thermal radiation due to ignited pipeline rupture and evaluate the consequence on the surrounding human population. Such a consequence model is dependent on the pipeline properties (i.e. diameter and MOP) and the structure properties (i.e. precise locations and types of structures). The overall risk is then represented by two specific, well defined measures: Individual Risk (IR) and Societal Risk (SR). The goal of this paper is to perform a critical review of IR and SR acceptability criteria that are widely available and widely used, and outline the criteria (and the approach) adapted by TransCanada Pipelines. Worldwide, there are several different standards that define the criteria for evaluating IR and SR, particularly some countries with higher population densities around pipelines (e.g. UK and Netherlands). These IR and SR criteria have been compared in a hypothetical case study, to determine the most appropriate method in terms of the assumptions for calculating risks, the criteria, and how the actual risks compares to the criteria. The outcome of this study was the adoption of a defendable process for calculating SR, along with the associated criterion.


Author(s):  
S. Zhang ◽  
S. Kariyawasam ◽  
R. Sutherby ◽  
J. Upadhyaya

This paper presents a systematic and comprehensive procedure for the system-wide response to incidents (SWRI). This SWRI process has been used for identifying emerging threats and incorporating the learnings from major incidents into a pipeline integrity management program (IMP). This process also complements the IMP for threat identification and system wide risk assessment, thus giving consideration to all known threats and their interactions. A recent major incident due to thermal expansion on a TransCanada pipeline system was used to demonstrate the process of SWRI and the use of SWRI to identify the contributing factors of thermal expansion. An example was used to illustrate the engineering assessment for thermal expansion driven by the construction of two new compressor stations on an existing pipeline. The process documented in this case study has the potential to augment the integrity management programs and systemic corrective actions for pipeline systems in the energy industry.


Author(s):  
Mingjiang Xie ◽  
Zhigang Tian ◽  
Jeff Sutherland ◽  
Bingyan Fang ◽  
Bill Gu

A pipeline integrity management program is greatly affected by integrity planning methods and inline inspection (ILI) tool performance. In integrity management program planning, inspection and maintenance activities are in common practice, determined from risk and integrity assessment practices with the objective to reduce risk and effectively exceed a reliability target for the safe operation of the pipeline. An efficient and effective integrity planning method can address the most significant risk and optimize the operational and maintenance costs. In this paper, a method is presented for analyzing the impact of ILI tool accuracy on integrity planning for pipelines for fatigue cracks. Crack inspection and threat of fatigue cracking was used as the working case for the analysis although the approach could potentially be used for any pipeline threat type. The proposed method is based on the use of a Monte Carlo simulation framework, where initial crack defect size and ILI measurement errors are considered as key random variables. The integrity (severity) assessment of the crack population scenarios used the CorLAS™ burst pressure model, and the Paris’ law crack growth model based on API 579. The subsequent pipeline reliability assessments also considered single and multiple cracks scenarios. Using a reliability / probability of failure (PoF) approach, the impact of ILI tool accuracy and initial crack size on when to set reinspection and reassessment intervals was investigated. Furthermore, integrity program cost scenarios for pipeline integrity programs with multiple cracks was also evaluated with respect to different (crack) populations, pipe conditions and ILI accuracies. A sensitivity analysis was performed considering different inspection costs, maintenance costs and relative crack severity for pipelines with financial metrics. Various scenarios were discussed regarding maintenance and inspection planning and a “total cost rate” for different situations. The proposed method can support integrity management program planning by linking risks with integrity plan costs associated with ILI accuracies, and optimal re-assessment intervals.


Author(s):  
Shahani Kariyawasam ◽  
Hong Wang ◽  
Boon Ong ◽  
Mohammad Al-Amin ◽  
Ning Zhang

The System Wide Risk Assessment (SWRA) is an essential first step in the pipeline integrity management program. It is required by both Canadian and US regulators and is expected to estimate risk due to all threats, interaction of threats, and consequences. The main objective of the SWRA is to identify high risk segments so that segments with excessive risk can be mitigated. The SWRA models developed in this study employs quantified likelihood models and consequence models. A companion paper explains the consequence models. This paper presents the framework and rationale used to produce quantifiable measures of likelihood for each threat. The quantification enables sensible comparisons between threat likelihood values and also enables realistic combining of likelihood values to produce total likelihood of failure due to all threats. It also facilitates identification of key parameters that contribute to each threat. It is important to have a consistent risk framework that systematically applies to all the threats and accommodates all the different aspects and mitigative actions in each threat management process. For effective continuous improvement it is essential that the models are transparent and updatable. A consistent framework that is systematic, rigorous, transparent and updatable is utilized with explicit consideration to threat interactions. The main advantages of the likelihood models developed in this study are: • It is based on all evidence that is available for each threat (failure histories, observations from assessments, i.e., digs, HTs, and ILIs, and mechanistic understanding) • It considers all nine threat categories and relevant subcategories where causal factors are different (such as SCC and Circumferential SCC within the crack threat category) • It clearly considers all three types of threat interactions (Interacting coincident defects, Interacting-activating threats, and Interacting common-mode conditions) among all threat categories. • It is based on subsystem specific historical failure rates for each threat, where subsystem is defined as a subset of pipelines that have different performance characteristics with respect to at least one threat. This basis enables the failure frequencies predicted to be more in line with reality and consequently improves accuracy of predictions and appropriate quantification. • The subsystem specific historical failure rates are then calibrated to correlate to different mechanistic characteristics so that within-pipeline-subsystem variation due to changes in parameters is represented. • Finally assessments or observations are used to appropriately update threat likelihood with latest knowledge from measured local observations. All of the improvements mentioned above have helped the SWRA 2013 to produce more representative results. The comprehensive set of validation exercises verify that the results are realistic.


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