Structural Integrity Management (SIM) via a Digitalized Structural Integrity Compliance System

2020 ◽  
Author(s):  
Sok Mooi Ng ◽  
Biramarta Isnadi ◽  
Luong Ann Lee ◽  
Syahnaz Omar ◽  
Siti Nurshamshinazzatulbalqish Saminal ◽  
...  
Keyword(s):  
Decision Making ◽  
Weight Control ◽  
Structural Integrity ◽  
Successful Implementation ◽  
Floating Structure ◽  
Web Based ◽  
Software Application ◽  
Risk Ranking ◽  
Integrity Management ◽  
Inspection And Maintenance

Abstract The objective of this paper is to present the digitalization of Structural Integrity Management for PETRONAS, via a web-based Structural Integrity Compliance System (SICS). Developed initially as a software application to manage the vast database for integrity management of offshore fleet, the system covers the substructure, topside structures, onshore civil and structural assets and ship-shaped floating structure modules. The system is developed in line with API RP 2SIM, taking the SIM process of Data-Evaluation-Strategy-Program. The Data captured in the system inclusive of the design, construction, characteristics, inspection, foundation and metocean data required for evaluation of the likelihood of failure. While the life safety, environmental pollution & business loss data is assigned to evaluate the consequence of failure. After successful implementation of substructure module, the system has been expanded to capture data and evaluate risk of other types of assets, namely the topside structures, onshore civil and structural assets and at last, a module developed for a ship shaped floating structure. A centralized database to manage the integrity a large aging fleet provides good visibility to the management in order to prioritize resources (budget, manpower and logistic) for inspection and maintenance, at the same time reducing the risk of operation disruption due to non-compliance. The system has created much cost saving through Risk-Based Underwater Inspection (RBUI) and risk-based anomalies repair. SICS consists of the risk ranking sub-module and also other decision making tools including Strengthening-Modification and Repair (SMR) Toolkit, and Technical Limits Weight Control (TLWC) Tool. These toolkits are codified to provide quick decision making to management to evaluate the feasibility of SMR scheme or modification involving additional topside weights.

A Hybrid Topside Structural Approach to the Management of Aging Fleet

2021 ◽  
Author(s):  
Biramarta Isnadi ◽  
Luong Ann Lee ◽  
Sok Mooi Ng ◽  
Ave Suhendra Suhaili ◽  
Quailid Rezza M Nasir ◽  
...  
Keyword(s):  
Structural Integrity ◽  
Metal Loss ◽  
Web Based ◽  
Strong Basis ◽  
Asset Risk ◽  
Risk Ranking ◽  
Design Life ◽  
Industry Standards ◽  
Integrity Management ◽  
Inspection Data

Abstract The objective of this paper is to demonstrate the best practices of Topside Structural Integrity Management for an aging fleet of more than 200 platforms with about 60% of which has exceeded the design life. PETRONAS as the operator, has established a Topside Structural Integrity Management (SIM) strategy to demonstrate fitness of the offshore topside structures through a hybrid philosophy of time-based inspection with risk-based maintenance, which is in compliance to API RP2SIM (2014) inspection requirements. This paper shares the data management, methodology, challenges and value creation of this strategy. The SIM process adopted in this work is in compliance with industry standards API RP2SIM, focusing on Data-Evaluation-Strategy-Program processes. The operator HSE Risk Matrix is adopted in risk ranking of the topside structures. The main elements considered in developing the risk ranking of the topside structures are the design and assessment compliance, inspection compliance and maintenance compliance. Effective methodology to register asset and inspection data capture was developed to expedite the readiness of Topside SIM for a large aging fleet. The Topside SIM is being codified in the operator web-based tool, Structural Integrity Compliance System (SICS). Identifying major hazards for topside structures were primarily achieved via data trending post implementation of Topside SIM. It was then concluded that metal loss as the major threat. Further study on effect of metal loss provides a strong basis to move from time-based maintenance towards risk-based maintenance. Risk ranking of the assets allow the operator to prioritize resources while managing the risk within ALARP level. Current technologies such as drone and mobile inspection tools are deployed to expedite inspection findings and reporting processes. The data from the mobile inspection tool is directly fed into the web based SICS to allow reclassification of asset risk and anomalies management.

VoI-informed decision-making for SHM system arrangement

2020 ◽  
pp. 147592172096273
Author(s):  
Wei-Heng Zhang ◽  
Jianjun Qin ◽  
Da-Gang Lu ◽  
Sebastian Thöns ◽  
Michael Havbro Faber
Keyword(s):  
Decision Making ◽  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Structural Integrity ◽  
Monitoring Systems ◽  
Structural Health ◽  
Integrity Management ◽  
Potential Benefits ◽  
Health Monitoring Systems ◽  
Monitoring Information

Structural health monitoring systems have been widely implemented to provide real-time continuous data support and to ensure structural safety in the context of structural integrity management. However, the quantification of the potential benefits of structural health monitoring systems has not yet attracted widespread attention. At the same time, there is an urgent need to develop strategies, such as optimizing the monitoring period, monitoring variables, and other factors, to maximize the potential benefits of structural health monitoring systems. Considering the continuity of structural health monitoring information, a framework is developed in this article to support decision-making for structural health monitoring systems arrangement in the context of structural integrity management, which integrates the concepts of value of information and risk-based inspection planning based on an approach which utilizes a conjugate prior probability distribution for updating of the probabilistic models of structural performances based on structural health monitoring information. An example considering fatigue degradation of steel structures is investigated to illustrate the application of the proposed framework. The considered example shows that the choice of monitoring variables, the monitoring period, and the monitoring quality may be consistently optimized by the application of the proposed framework and approach. Finally, discussions and conclusions are provided to clarify the potential benefits of the proposed framework with a special view to practical applications of structural health monitoring systems.

Enhancing Pipeline Integrity Management by Integrating Advanced Geoprocessing Models

2017 ◽  
Author(s):  
G. Singh ◽  
A. Gharibi ◽  
B. Martinez Perez ◽  
R. Almandoz
Keyword(s):  
Decision Making ◽  
Risk Management ◽  
Economic Losses ◽  
Critical Element ◽  
Successful Implementation ◽  
Operating Life ◽  
Gas Dispersion ◽  
Pipeline Networks ◽  
Integrity Management ◽  
Risk Areas

Pipelines are recognized as one of the safest methods of transporting hazardous products, however unwanted incidents still occur. With many kilometers of the pipelines interacting with different environments, they are exposed to various threats and risks. Any record of leak or rupture along the pipelines can have devastating consequences; for example extreme environmental impacts, huge economic losses in addition to its national and international operators’ images. To prevent pipeline failure and adhere to the regulations, the risk of an incident to occur should be continuously assessed and evaluated throughout the pipeline’s operating life-cycle. Risk management has been a critical component of the Integrity Management Process (IMS) for a number of years. With the increasing availability of geographic information and improved inspection technologies for pipeline networks, there is an on-going expectation from both pipeline regulators and operators worldwide to access a more quantitative approach for risk management along the pipeline using GIS or geoprocessing models. Amalgamation of geoprocessing models with integrity management allows to precisely identify the risk areas along the pipeline with a rich visualization on the map. This is one of the most critical element underpinning the decision-making process. In this paper, a review of geoprocessing tools that have been implemented within a pipeline integrity management system is presented. Examples of these geoprocessing tools include: (1) Class Location, (2) High Consequences Area (HCA), (3) Gas Dispersion and (4) Electrical Interference. After successful implementation of these tools, the output of the tools have been used to carry out more detailed analysis of risk assessment and aid in decision making. Additionally a WebGIS platform was also implemented to facilitate the visualization of the results.

ANALYZING AND IMPROVING WEB APPLICATION QUALITY USING DESIGN PATTERNS

2012 ◽  
Vol 2 (2) ◽  
pp. 112-116
Author(s):  
Shikha Bhatia ◽  
Mr. Harshpreet Singh
Keyword(s):  
Web Application ◽  
Design Pattern ◽  
Design Patterns ◽  
Web Applications ◽  
Past Research ◽  
Software Systems ◽  
Interactive Software ◽  
Web Based ◽  
Software Application ◽  
Execution Speed

With the mounting demand of web applications, a number of issues allied to its quality have came in existence. In the meadow of web applications, it is very thorny to develop high quality web applications. A design pattern is a general repeatable solution to a generally stirring problem in software design. It should be noted that design pattern is not a finished product that can be directly transformed into source code. Rather design pattern is a depiction or template that describes how to find solution of a problem that can be used in many different situations. Past research has shown that design patterns greatly improved the execution speed of a software application. Design pattern are classified as creational design patterns, structural design pattern, behavioral design pattern, etc. MVC design pattern is very productive for architecting interactive software systems and web applications. This design pattern is partition-independent, because it is expressed in terms of an interactive application running in a single address space. We will design and analyze an algorithm by using MVC approach to improve the performance of web based application. The objective of our study will be to reduce one of the major object oriented features i.e. coupling between model and view segments of web based application. The implementation for the same will be done in by using .NET framework.

scholarly journals Evaluation model: A performance appraisal model for certified lecturers

2018 ◽  
Vol 49 ◽  
pp. 02003
Author(s):  
Dyah Ayu Puri Palupi ◽  
Mardanung Patmo Cahjono ◽  
Kristyana Dananti
Keyword(s):  
Performance Appraisal ◽  
Evaluation Model ◽  
Group Discussion ◽  
Valuable Contribution ◽  
Web Based ◽  
Software Application ◽  
The Government ◽  
Program Test ◽  
Prototype Software ◽  
Efficient Software

This study aims to develop lecturer performance appraisal model using web-based Integrated Evaluation Model (IEM). The object of this study is certified lecturers in Indonesia, by applying this model, the certification compensation given by the government is really used to enhance lecturer's performance. It is expected that the results of this study can be an important research that produces effective and efficient software to evaluate the lecturers' performance nationally because it involves a 360degree assessment. We have done some activities to develop the prototype software application of Integrated Evaluation Model (IEM) for assessing the certified lecturer's performance. They are 1) preparing the questionnaire indicator for the 360 degree performance appraisal, 2) conduct the program test on the certified lecturer. In this phase, certified lecturers, superior, and students also conduct assessment on certified lecturers through IEM software, 3) conduct Focus Group Discussion (FGD) to gain evaluation and feedback on the effectiveness of the IEM application program. FGD results provide a valuable contribution to the preparation of IEM program design. And the IEM software produced in this research has accommodated all of the results of FGD activities. IEM complements the prior certified lecturer performance appraisal with 360 degrees performance appraisal.

scholarly journals Bayesian maintenance decision optimisation based on computing the information value from condition inspections

2021 ◽  
pp. 1748006X2097812
Author(s):  
Guang Zou ◽  
Kian Banisoleiman ◽  
Arturo González
Keyword(s):  
Decision Making ◽  
Structural Integrity ◽  
Fatigue Cracking ◽  
Cost Effective ◽  
Offshore Structures ◽  
Information Value ◽  
Bayesian Decision ◽  
Maintenance Strategies ◽  
Optimal Maintenance ◽  
Maintenance Decision

A challenge in marine and offshore engineering is structural integrity management (SIM) of assets such as ships, offshore structures, mooring systems, etc. Due to harsh marine environments, fatigue cracking and corrosion present persistent threats to structural integrity. SIM for such assets is complicated because of a very large number of rewelded plates and joints, for which condition inspections and maintenance are difficult and expensive tasks. Marine SIM needs to take into account uncertainty in material properties, loading characteristics, fatigue models, detection capacities of inspection methods, etc. Optimising inspection and maintenance strategies under uncertainty is therefore vital for effective SIM and cost reductions. This paper proposes a value of information (VoI) computation and Bayesian decision optimisation (BDO) approach to optimal maintenance planning of typical fatigue-prone structural systems under uncertainty. It is shown that the approach can yield optimal maintenance strategies reliably in various maintenance decision making problems or contexts, which are characterized by different cost ratios. It is also shown that there are decision making contexts where inspection information doesn’t add value, and condition based maintenance (CBM) is not cost-effective. The CBM strategy is optimal only in the decision making contexts where VoI > 0. The proposed approach overcomes the limitation of CBM strategy and highlights the importance of VoI computation (to confirm VoI > 0) before adopting inspections and CBM.

scholarly journals Development of an electronic conversation aid to support shared decision making for children with acute otitis media

JAMIA Open ◽  
2021 ◽  
Vol 4 (2) ◽  
Author(s):  
Jana L Anderson ◽  
e Silva Lucas Oliveira J ◽  
Juan P Brito ◽  
Ian G Hargraves ◽  
Erik P Hess
Keyword(s):  
Decision Making ◽  
Shared Decision Making ◽  
Otitis Media ◽  
Acute Otitis Media ◽  
Medical Knowledge ◽  
Complication Rates ◽  
Shared Decision ◽  
Web Based ◽  
Quality Issue ◽  
The Impact

Abstract Objective The overuse of antibiotics for acute otitis media (AOM) in children is a healthcare quality issue in part arising from conflicting parent and physician understanding of the risks and benefits of antibiotics for AOM. Our objective was to develop a conversation aid that supports shared decision making (SDM) with parents of children who are diagnosed with non-severe AOM in the acute care setting. Materials and Methods We developed a web-based encounter tool following a human-centered design approach that includes active collaboration with parents, clinicians, and designers using literature review, observations of clinical encounters, parental and clinician surveys, and interviews. Insights from these processes informed the iterative creation of prototypes that were reviewed and field-tested in patient encounters. Results The ear pain conversation aid includes five sections: (1) A home page that opens the discussion on the etiologies of AOM; (2) the various options available for AOM management; (3) a pictograph of the impact of antibiotic therapy on pain control; (4) a pictograph of complication rates with and without antibiotics; and (5) a summary page on management choices. This open-access, web-based tool is located at www.earpaindecisionaid.org. Conclusions We collaboratively developed an evidence-based conversation aid to facilitate SDM for AOM. This decision aid has the potential to improve parental medical knowledge of AOM, physician/parent communication, and possibly decrease the overuse of antibiotics for this condition.

Effective Improvements to Reliability Based Corrosion Management

2010 ◽  
Author(s):  
Shahani Kariyawasam ◽  
Warren Peterson
Keyword(s):  
Decision Making ◽  
Oil And Gas ◽  
Data Gathering ◽  
Effective Area ◽  
The Face ◽  
Integrity Management ◽  
Reliability Methods ◽  
Specific Growth Rates ◽  
Safe Condition ◽  
Effective Use

Reliability methods have being adopted by oil and gas operators for integrity management decisions. These methods explicitly account for all relevant uncertainties and are designed to provide consistent safety. Consequently, a risk or reliability based approach is a very appropriate basis for decision making in the face of uncertainties. However, as in the effective use of any powerful methodology the sensitivities of the method to assumptions and limitations of applicability need to be well understood. This paper presents how improvements were made to reliability based integrity program by understanding its limitations and sensitivities. First the inputs that have the highest impact on the results were identified. These inputs are the most appropriate areas for improvement and data gathering. It is also very important to understand how the results are to be used and for what purpose. The results of this particular inline inspection based reliability assessment are used to make better excavation and repair decisions. A defect-based and joint-based decision making process is essential for determining with sufficient confidence if each defect and joint is in a safe condition. Consequently, the improvements are focused on discriminating between the myriad of defects found during an inline inspection run. Distinct field characteristics of corrosion growth are also taken into account in these improvements. The paper presents the implementation of effective area methods for future integrity probabilistic evaluations. It also describes the benefit of applying defect-specific growth rates. Finally, case studies are presented to demonstrate the effectiveness of the changes.

Sign in / Sign up

Export Citation Format

Share Document