Introduction to Newton RDMS Digital Engineering Content (DEC)

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Newton RDMS is a combination of applications and content where some of the applications enable customers to develop their own content. Digital Engineering Content (DEC) encapsulates engineering knowledge to transform existing data into value. The articles in this section describe two types of models: Risk-Based Inspection (RBI) Models and Maintenance Models. These models offer a framework to determine risk and retrieve planned maintenance and task recommendations. The articles also describe the relationship between these models and Inspection Templates, Events Templates, Thickness Reports and Hierarchy Templates.


RBI Models

RBI models are data-driven decision models that calculate risk for loss of containment and recommend tasks to mitigate risk. AllAssets provides RBI models for pressure equipment such as pressure vessels, exchangers and relief devices. The following general information establishes the context for the detailed model descriptions in subsequent articles.

  • RBI models are designed to calculate risk at the component level and recommend mitigation tasks for the overall asset. Therefore, pressure equipment assets are divided into multiple risk components with two exceptions. For example, Shell & Tube Exchangers have three child risk components (i.e., Shell, Channel and Bundle). The two exceptions are pressure vessel and process piping (i.e., piping circuit) which only have one risk component, so the asset and risk component are the same hierarchy item.
  • Risk analysis is calculated for each risk component and results are summarized by the parent asset. Mitigations application displays recommendations for the parent asset. Therefore, all attributes required for risk analysis or recommendations are contained within the model (e.g., internal entry possible, small bore or mixed bore piping).
  • Baseline RBI models were deployed with versions 1.0 to 2.8. Baseline RBI models match calculations and number of risk components to Capstone RBMI. One exception was Baseline RBI models did not include “jackets” (i.e., heating or cooling jacket installed around the outside of the pressure boundary).
  • Expanded RBI models were deployed starting with version 2.9. Expanded RBI models perform risk analysis using the same RBI methodology as the baseline models, but offer the following additional capabilities:
    • Jackets are one of several types of “Other Components” that can be added dynamically to the Hierarchy as children of the parent asset (limit of 10 per asset). Examples also include water boot and nozzles.
    • Increased number of child components for multi-component assets. For example, columns can have up to 9 child components (i.e., 3 Tops, 3 Middles and 3 Bottoms) and up to 10 other components.
  • Relief Device models address failure to relieve pressure on demand caused by corrosion and fouling.
  • Fixed Equipment models (both Baseline and Expanded models) address loss of containment caused by in-service damage mechanisms with an estimate of various consequence categories (See Table 1).


Maintenance Models

Maintenance models are knowledge-based models using Reliability Centered Maintenance (RCM) based on Failure Mode, Effect and Criticality Analysis (FMECA) to develop and optimize maintenance strategies. The following general information establishes the context for the detailed model descriptions in subsequent articles.

  • Energy Library includes maintenance models for Electrical, Instrumentation and Mechanical equipment and a library of Planned Maintenance Tasks.
  • Models are organized using ISO 14224 hierarchy.