Optimal Adaptive Inspection Planning Process in Service of Fatigued Aircraft Structures

2009 ◽  
pp. 354-369 ◽  
Author(s):  
Konstantin Nechval ◽  
Nicholas Nechval ◽  
Gundars Berzinsh ◽  
Maris Purgailis ◽  
Uldis Rozevskis ◽  
...  
Keyword(s):  
Planning Process ◽  
Inspection Planning ◽  
Aircraft Structures

Challenges in Inspection Planning for Maintenance of Static Mechanical Equipment on Ageing Oil and Gas Production Plants: The State of the Art

2012 ◽  
Author(s):  
R. M. Chandima Ratnayake
Keyword(s):  
Oil And Gas ◽  
Planning Process ◽  
Gas Production ◽  
Specific Pattern ◽  
Mechanical Equipment ◽  
Inspection Planning ◽  
Oil And Gas Production ◽  
Design Life ◽  
Static Mechanical ◽  
Physical Assets

Although the design life of many of the oil and gas (O&G) production and process facilities on the Norwegian Continental Shelf (NCS) has been exceeded, the same physical assets are still under exploitation as a result of extended life based on the information gathered by inspection, maintenance, modification and replacement history. Nevertheless, pressure systems, which comprised of static mechanical equipment such as piping components (valves, separators, tanks, vessels, spools, etc.), undergo continuous inherent deterioration (fatigue, corrosion, erosion, etc). Often the deterioration rates vary over the lifetime following no specific pattern due to the changes in product quality of the well stream, varying environmental conditions and unexpected cyclical loading. These necessitate effective inspection planning to repair, modify or replace those components that reach the end of their design life. This enables the integrity of the physical assets to be retained at a tolerable level. The inspection planning has traditionally been driven by prescriptive industry practices and carried out by human experts, based on risk-based inspection (RBI) and risk-based maintenance (RBM) philosophies. The RBI and RBM involve the planning of inspections on the basis of the information obtained from risk analyses of a particular system and related equipment. This manuscript reviews the evolution of inspection and maintenance practices. Then it provides a conceptual framework to mechanize the inspection planning process in order to reduce the effect arising from human involvement, whilst improving the effective utilization of data from different sources.

Mechanization of static mechanical systems inspection planning process

2015 ◽  
Vol 21 (2) ◽  
pp. 227-248 ◽  
Author(s):  
R.M. Chandima Ratnayake
Keyword(s):  
Industrial Development ◽  
Planning Process ◽  
Solution Space ◽  
Mechanical Equipment ◽  
Planning Problem ◽  
Inspection Planning ◽  
Suggested Approach ◽  
Content Type ◽  
Static Mechanical

Purpose – The purpose of this paper is to review the evolution of inspection and maintenance (I&M) practices used for aging and newly built oil and gas (O&G) facilities. It also proposes a framework and an approach for mechanizing inspection planning to perform preventive maintenance (PM) activities, taking technical condition (TC) and relative degradation (RD) into consideration. Design/methodology/approach – The paper systematically collects, categorizes, and analyzes the published literature of both researchers and practitioners. It also utilizes industrial experience that has been accrued and utilized from inspection planning practices for static mechanical equipment on aging O&G production plants. Findings – The paper defines significant issues in I&M of O&G assets related to: different philosophies; stakeholders’ requirements trade-off; dependability and asset deterioration challenges; items interacting with inspection planning mechanization processes and I&M optimization approaches. A framework is identified to mechanize the inspection planning process in order to reduce the effect arising from human involvement, while improving the effective utilization of data from different sources. The suggested approach improves the quality of an inspection program, while minimizing the variability and cost to the engineering contractors as well as to the owners of O&G facilities. Practical implications – The mechanization of inspection planning (MIP) is vital to have inspection programs with uniform quality. The currently employed inspection practices face challenges in maintaining uniform quality from one inspection program to another due to the variability present in the planning process, especially among the different inspection planning engineers. The suggested fuzzy logic-based MIP supports the minimization of the variability and increases the quality of inspection programs. Originality/value – The paper provides a comprehensive review of research contributions and industrial development efforts. These will be useful to the life cycle stakeholders in both academia and industry in understanding the inspection planning problem and solution space within the O&G asset I&M context.

scholarly journals A Comprehensive Uncertainty-Based Framework for Inspection Planning of Highway Bridges

2021 ◽  
Vol 6 (2) ◽  
pp. 27
Author(s):  
Abdelrahman M. Abdallah ◽  
Rebecca A. Atadero ◽  
Mehmet E. Ozbek
Keyword(s):  
Planning Process ◽  
Prediction Models ◽  
Highway Bridges ◽  
The United States ◽  
Inspection Time ◽  
Inspection Planning ◽  
Inspection Method ◽  
Deterioration Process ◽  
Concrete Bridge Deck ◽  
Inspection Data

Bridge inspection standards in the United States require routine visual inspections to be conducted on most bridges at a maximum interval of two years regardless of the bridge condition. Limitations of this uniform calendar-based approach have been reported in the literature. Accordingly, the objective of this study is to provide a new systematic approach for inspection planning that integrates information from bridge condition prediction models, inspection data, and expert opinion using Bayesian analysis to enhance inspection efficiency and maintenance activities. The uncertainty-based inspection framework proposed in this study can help bridge owners avoid unnecessary or delayed inspections and repair actions, determine the inspection method, and consider more than one deterioration process or bridge component during the inspection planning process. The inspection time and method are determined based on the uncertainty and risks associated with the bridge condition. As uncertainty in the bridge condition reaches a defined threshold, an inspection is scheduled utilizing nondestructive techniques to reduce the uncertainty level. The framework is demonstrated on a new and on an existing reinforced concrete bridge deck impacted by corrosion deterioration. The results show that the framework can reduce the number of inspections by 50% compared to conventional scheduling methods, and the uncertainty regarding the bridge maintenance time is reduced by 16%.

Stimuli presented during action planning affect the planning process depending on their compatibility with arbitrary action effects

2006 ◽  
Author(s):  
Michael Ziessler ◽  
Dieter Nattkemper ◽  
Stefan Vogt ◽  
Samuel Ellsworth ◽  
Jonathan Sayers
Keyword(s):  
Planning Process ◽  
Action Planning ◽  
Action Effects ◽  
Arbitrary Action

IMPLEMENTASI MANAJEMEN KURIKULUM MADRASAH MUROTTILIL QUR’AN AL-RIFA’IE 2 MALANG

2019 ◽  
Vol 1 (1) ◽  
pp. 70
Author(s):  
Akhmad Ulul Albab
Keyword(s):  
Planning Process ◽  
Case Study Research ◽  
Field Research ◽  
Evaluation Process ◽  
Observation Time ◽  
Curriculum Planning ◽  
Research Approach ◽  
Learning Program ◽  
Planning Stage ◽  
Academic Calendar

This thesis aims to examine the management process applied in the Madrasah Murottilil Qur'an Al-Rifa'ie 2 Malang. Beginning with the curriculum planning process, implementing the curriculum, and how to evaluate the curriculum of the Madrasah Murottilil Qur'an Al-Rifa'ie 2 Malang. This research aims to find out and describe the managerial process of the curriculum, and the inhibiting factors in the implementation of efforts to achieve the vision, mission that has been set.This thesis is a report on the results of field research using a qualitative descriptive method with a case study research approach that takes place at the Al-Rifa'ie 2 Malang Boarding School.Data collection is done by interview, observation, and documentation. Data analysis is done by reducing data, then presenting data, and finally from the compiled data conclusions are drawn. Checking the validity of the data is done with credibility which includes Triangulation, peer checking, extension of observation time, increasing perseverance.The results of the analysis show that the curriculum management implemented by p Madrasah Murottilil Qur'an Al-Rifa'ie 2 At the planning stage, the process carried out was planning the implementation time, the learning program, making the academic calendar, and how the evaluation was held. At the implementation stage, it starts with a new santri test, conducts learning and conducts an ascension test. The evaluation process is carried out at least 2x in one month, and 1 and after one semester.

Sign in / Sign up

Export Citation Format

Share Document