Other ISO 15926 Resources

In An Introduction to ISO 15926 we provide several pages of links to other resources. Here we post some additional learning material.

Information Modeling Resources

The barriers to digital interoperability are no longer hardware and technology, but rather information modeling. To truly develop ubiquitous digital interoperability, we will need robust information models that describe project objects and the relationships between them, from their inception, through operation, to demobilization. This provides a distinct growth opportunity for engineers who understand that information about plant objects is as valuable as the objects themselves. When we have a large knowledge base, classified accurately, we will be able to exchange worthwhile information without human involvement in each transfer.

Information modeling is the core of ISO 15926. Most people will not have to know anything about it, but a lucky few will get to go all the way down the rabbit hole. If you would like to become one of the lucky few, the sections following describe publications that will get you started.

The Archives of Dr. Matthew West

Dr. West has a long history with Shell’s Information Management department, and was a developer of parts of ISO 15926 before he retired. He has posted many of his publications on his web site:


There is a wealth of information here for those introducing themselves to information modeling. Dr. West was part of the development of several of the STEP parts, and later ISO 15926. If you start near the bottom, you will see the progression from one to the other. If you are new to information modeling, we suggest you start partway down with some introductions on how to add the dimension of time to a representation of product parts.

  • The "IIDEAS" Architecture And Integration Methodology For Integrating Enterprises (2001)
  • Replaceable Parts: A Four Dimensional Analysis (2003)
  • Common Reference Data: The Foundation of e-Business (2003)
  • An Introduction to 4 Dimensionalism in Data Modeling (2007)
  • 4 Dimensional Data Modeling: An Ontological Approach (2008)

If you would like to listen to a lecture of Dr. West about ISO 15926, he has made available a podcast and lecture notes of a presentation given on Ontolog, a community devoted to advancing the field of ontology. The lecture is titled An Introduction to ISO 15926 with Podcast (40 Mbyte) and is available from ONTOLOG.

Hans Teijgeler’s Modeling Site

Hans Teijgeler has been influential in developing some of the parts of ISO 15926. In his retirement, he has developed a web site that explains the way data modeling is done with ISO 15926. Hans uses a diagramming technique that you will see if you start working directly with Part 2, instead of Part 7.


In addition, Hans has maintained an information website for ISO 15926 for a number of years.


This contains introductory information as well as the recently announced template project.

IOHN Modeling Guide

We described the Integrated Operations in the High North (IOHN) project in Chapter 4. It is a unique collaboration between the IT, defense, and oil and gas industries. It is a proponent of ISO 15926 because ISO 15926 will enable more efficient and safer operation of remote sites. For their members, they have developed a training course on ISO 15926 and an introduction to information mode ling - which they have recently released to the public.

At the bottom of this page, you will see the following three attachments:

  • IHON Modeling Guide, Part 1
  • IHON Modeling Guide, Part 2
  • IHON Modeling Guide, Lecture Notes

Origin of ISO 15926

David Leal, of CAESAR Systems Limited, is one of the developers of parts of STEP and ISO 15926. In 2005, he published a paper ISO 15926 "Life Cycle Data for Process Plant": An Overview. In it he explains why ISO 15926 was developed. He describes what he calls the 4D approach to representing change in a way that can be represented with RDF/OWL. It has been made available free of charge. Search for the paper by its title, or go to this site:


Organizations Responsible for ISO 15926

We describe these organizations in Chapter 2 of An Introduction to ISO 15926



ISO Technical Committee 184 Subcommittee 4 - Industrial Data

POSC Caesar Association


POSC Caesar Association (PCA) is a nonprofit global-standardization member organization that promotes the development of open specifications to be used as standards for enabling the interoperability of data and software and related matters.



Fiatech is an industry consortium that provides global leadership in identifying and accelerating the development, demonstration, and deployment of fully integrated and automated technologies to deliver the highest business value throughout the life cycle of all types of capital projects.



USPI-NL is a formal association of process industry companies with the mission to develop, maintain, and promote the use of international standards and best practices for product and plant life cycle information.

User Groups



iRINGUserGroup is an open online community of users, companies, and organizations who use, are considering using, or are developing or deploying iRING protocols. The iRINGUserGroup is also responsible for the management, enhancement, and maintenance of iRINGTools and iRINGSandbox. We have described iRING in Chapter 4. On their home page are links to iRINGTools and iRINGSandbox.

Discovering a Class in ISO 15926

This gives advice on choosing the correct class during searches in a reference data service (RDS) browser.


Other Organizations



MIMOSA is a not-for-profit trade association dedicated to developing and encouraging the adoption of open information standards for operations and maintenance in manufacturing, fleet, and facility environments. MIMOSA’s open standards enable collaborative asset life-cycle management in both commercial and military applications. We have described MIMOSA and their two joint special interest groups with Fiatech and PCA in Chapter 4 of An Introduction to ISO 15926.

European Committee for Standardization


The European Committee for Standardization (CEN) is a business facilitator in Europe, removing trade barriers for European industry and consumers. Its mission is to foster the European economy in global trading and the welfare of European citizens and the environment. Through its services it provides a platform for the development of European standards and other technical specifications. The members of CEN work together to develop standards for European business. In the fall of 2010, they conducted the ORCHID workshop discussed in material following.

Orchestration of Industrial Data


The ORCHID (Orchestration of Industrial Data) group is a network of European companies and consortia dedicated to standardizing information across the process industry engineering supply chain to build competitive advantage. Its goal is to progress the industry toward interoperability. In Chapter 5, we presented an approach to implementing ISO 15926 that even small organizations can follow. It could be, however, that your organization is ready for a more comprehensive rollout. If so, you will find the proceedings of the ORCHID workshop interesting. The purpose of this workshop was to create an interoperability roadmap for organizations, starting, most importantly, with a self-assessment and an assessment of one’s business partners. The web page cited previously contains six attachments that can be downloaded.

  • Part 1: Direction and Framework
  • Part 2: Implementation Guide
  • Part 3: Standards Landscape
  • The CEN ORCHID Roadmap: Implementation Guide
  • The CEN ORCHID Roadmap: Direction and Framework
  • ORCHID: Orchestrating Industrial Data, Workshop Overview

RDS Browsers

The classes that make up Part 4, the dictionary of ISO 15926, are stored in what is called the RDS/WIP (Reference Data System/Work in Progress). To search the classes you need to use an RDS/WIP browser. For more information about RDS/WIP:


There are a number of browsers for the RDS/WIP. These are described in the sections that follow.


The RDS/WIP Search, otherwise known as the RDL Facade, was created during the early development of ISO 15926.


POSC Caesar Part 4 Browser

POSC Caesar has its own library of reference data (at the following address), presented in the form of spreadsheets.


POSC Caesar RDL Explorer

Log in as guest

Instructions on using the POSC browser can be found at the following address.


Handover Guides

One of the major motivations of organizations to sponsor the work that has led to ISO 15926, and the motivations of individuals to participate, is the efficient handover of information from engineering procurement and construction (EPC) contractors and constructors to owner-operators. After a facility has been built and commissioned, document and information handover must often operate on what is left of the project budget after the original engineering and construction staff have moved on to their next project. It is sometimes difficult for the owner to get all of the information it needs, and in a form that is immediately useful.

One barrier to adequate information handover in the capital projects industry is getting all parties to agree at the beginning of a project what needs to be handed over. So that every project does not have to develop its handover requirements from scratch, a number of handover guides have been created, and more are contemplated. We have come to refer to the discussion of information handover guides as the The Business Interfaces Definition Guide (BIDG). The handover guides developed to date all discuss the importance of good data handover and offer ways of ensuring that this will actually happen on a given project. One of them, published by EPISTLE, explicitly lists deliverables by name and is organized by engineering discipline. One barrier to getting more specific is a common definition of terms. When the JORD project is complete, many of the participants in the development of these handover guides anticipate a harmonization with Part 4.

EPISTLE Handover Guides

In the late 1990s at EPISTLE, the first Process Industries Data Handover Guide was published to help project participants define the scope of information turnover. The guide is issued in two parts. Part 1 concentrates on methodology, starting with understanding the business need for information, creating a plan to supply the information, and implementation. Part 2 focuses on recommendations for actual data items ranging from contract management documents, scheduling, materials, construction, and process to information on all of the components that make up the facility.

As its basis, the EPISTLE handover guide used the PISTEP Process Plant Engineering Activity Model (see Chapter 2 of An Introduction to ISO 15926). This activity model was essentially a very detailed flowchart of the main activities and information exchanges encountered over the life of a typical process plant. EPISTLE used the activity model to make sure its guide captured the most important exchanges. If you are ever involved in planning the information handover for a capital project, EPISTLE’s guides are still worth reading - along with the NIST and EPRI guides.

At the bottom of this page you will see two attachments:

  • Handover Guide Part1
  • Handover Guide Part2

NIST/FIATECH Handover Guides

The NIST handover guide is issued in a number of parts, modeled after the EPISTLE handover guides. The Capital Facilities Information Handover Guide Part 1 was issued by NIST and FIATECH in 2006. Several second parts are envisioned, each to focus on the deliverables of a specific industry. The General Buildings Information Handover Guide was issued in 2007. Its focus is the general buildings industry, including commercial, industrial, and government buildings. This guide reviews the issues in designing and constructing an environment of short schedules and constant change. Several case studies are included, showing the successes and lessons learned for early adopters of building information modeling (BIM).

Electric Power Research Institute Handover Guide


The Advanced Nuclear Technology: New Nuclear Power Plant Information Handover Guide was issued by the Electric Power Research Institute (EPRI) in 2009. It reviews the information handover requirements in the very heavily regulated nuclear industry. It starts by noting that new projects will almost certainly be developed with advanced computer systems capable of 3D modeling, construction sequencing, and detailed cost control. Handover will increasingly be electronic rather than paper based. If the power authorities operating the plant pay attention to data requirements early, the data handover can directly feed their own operations and maintenance systems. The document ends with a brief overview of emerging information handover standards, in which ISO 15926 is included. Future appendices will include detailed templates for an information handover plan. The report can be downloaded at no charge. You can go to EPRI’s home page and search for "handover guide" which will take you to a page where you should find the report listed. Alternatively, you can go directly to this information via the following path.


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