Colorado Diesel Inspection and Maintenance Program

1990 ◽  
Author(s):  
Jerry Gallagher
Keyword(s):  
Maintenance Program ◽  
Inspection And Maintenance

Risk Assessment for Small Diameter Piping for Liquid Pipeline Facilities

2018 ◽  
Author(s):  
C. M. Refaul Ferdous ◽  
Amanda Kulhawy ◽  
Jessica Farrell ◽  
Chris Beaudin ◽  
Anthony Payoe ◽  
...  
Keyword(s):  
Risk Measure ◽  
Small Diameter ◽  
Pipeline System ◽  
System Description ◽  
Maintenance Program ◽  
Inspection And Maintenance ◽  
Pressure Transmitter ◽  
Integrity Risk ◽  
Main Station ◽  
Pump Stations

The Enbridge Liquids Pipeline system is comprised of a large number of facilities including storage terminals, pump stations, injection sites, and delivery sites. Given the vast amount of small diameter piping (SDP) within company Pipeline facilities, SDP represents a significant portion of total facility integrity risk. An event such as equipment failure or product release can cause significant business impacts, and adverse consequences to the environment and/or safety of operations personnel. A quantitative risk based approach is required in order to establish robust, risk-based plans and programs to maintain the integrity of these SDP sections. Small diameter piping lengths are relatively short. Consequently, it is impractical to use SDP length as a unit of likelihood and risk measure. Instead, the preferred methodology is to determine the total number of assemblies for each type of SDP. In support of this approach, an inventory of SDP sections throughout the system has been gathered. For illustrative purposes, an example of a small diameter section would be a pressure transmitter branch connection. The isolatable section that would be risk assessed would start from the surface of the main station piping connection and continue up to the transmitter. This paper presents the framework for likelihood and consequence assessment of SDP based on the system description above. This framework quantitatively estimates the risk of SDP failure and risk-ranks SDP sections in support of implementing and establishing a system wide Risk Based Inspection and Maintenance program for SDP.

Indiana Subdrainage Experience and Application

1996 ◽  
Vol 1519 (1) ◽  
pp. 41-50
Author(s):  
Hossam F. Hassan ◽  
Thomas D. White ◽  
Rebecca McDaniel ◽  
David Andrewski
Keyword(s):  
Data Acquisition ◽  
Test Site ◽  
Ongoing Research ◽  
Pressure Transducers ◽  
Camera Systems ◽  
Maintenance Program ◽  
Inspection And Maintenance ◽  
And Performance ◽  
Moisture Conditions ◽  
Pavement Instrumentation

The applications of pavement subdrainage in the state of Indiana are presented. A recent study evaluated pavement subdrainage systems and measured and predicted moisture conditions underneath various types of pavements. Camera systems were used for internal inspection of the edge and geocomposite drains. Pavement instrumentation included moisture blocks, pressure transducers, temperature probes, rain and outflow tipping buckets, and a data acquisition system. Ongoing research using a test site on I-469 at Fort Wayne, Indiana, is aimed at finding the optimum location and layer configuration in flexible pavement; it uses those instruments as well as a TDR system, neutron probes, resistivity probe trees, and an enhanced data acquisition process. The research is a long-term project that will build on the data base of material hydraulic characteristics and performance. Indiana Department of Transportation has formed a committee to address issues related to use of subdrainage. Some of the recommendations from the committee were to abandon geocomposite drains, use bigger concrete protector walls at outlet pipes, and implement a routine inspection and maintenance program for drainage systems.

Risk-Informed Decisions Optimization in Inspection and Maintenance

2002 ◽  
Author(s):  
Robertas Alzbutas
Keyword(s):  
Dynamic Systems ◽  
Nuclear Power ◽  
Complex Dynamic ◽  
Complex Dynamic Systems ◽  
Logit Transformation ◽  
Maintenance Program ◽  
Inspection Process ◽  
Perform Sensitivity Analysis ◽  
Inspection And Maintenance ◽  
Pipe Systems

The Risk-Informed Approach (RIA) used to support decisions related to inspection and maintenance program is considered. The use of risk-informed methods can help focus the adequate in-service inspections and control on the more important locations of complex dynamic systems. The focus is set on the highest risk measured as conditional core damage frequency, which is produced by the frequencies of degradation and final failure at different locations combined with the conditional failure consequence probability. The probabilities of different degradation states per year and consequences are estimated quantitatively. The investigation of inspection and maintenance process is presented as the combination of deterministic and probabilistic analysis based on general risk-informed model, which includes the inspection and maintenance program features. Such RIA allows an optimization of inspection program while maintaining probabilistic and fundamental deterministic safety requirements. The failure statistics analysis is used as well as the evaluation of reliability of inspections. The assumptions regarding the effectiveness of the inspection methods are based on a classification of the accessibility of the welds during the inspection and on the different techniques used for inspection. The probability of defect detection is assumed to depend on the parameters either through logarithmic or logit transformation. As example the modeling of the pipe systems inspection process is analyzed. The means to reduce a number of inspection sites and the cumulative radiation exposure to the NPP inspection personnel with a reduction of overall risk is presented together with used and developed software. The developed software can perform and administrate all the risk evaluations and ensure the possibilities to compare different options and perform sensitivity analysis. The approaches to define an acceptable level of risk are discussed. These approaches with appropriate software in partial case is used for the construction and research of the models related to inspections and maintenance planning of Ignalina Nuclear Power Plant (RBMK-1500) piping components. The discussed example is related to risk analysis and inspection program improvements for selected pipe systems. The new risk-informed inspection and maintenance program for selected pipe systems are compared with various alternatives. The usage of risk evaluations to optimize the selection of inspection locations, the inspection interval, and the changes in risk and cost due suggested modifications are demonstrated. The proposed integrated modeling methodic and general model of inspection process can be used as a base for other risk-informed models of inspection process control and risk monitors of complex dynamic systems.

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