ISO 15926 Part 7 – Implementation of ISO 15926                   

Sponsor

POSC-CAESAR (www.posc-caesar.org)  (Norway)
USPI-NL (http://www.uspi.nl/)  (The Netherlands)

Web Sites

POSC-CAESAR http://www.posccaesar.org/ISO15926/iso15926.htm
InfoWebML (Part 7) http://www.infowebml.ws/

How to Obtain

Part 1 – Overview
Part 2 - Data Model
Part 4 - Reference Data Library (Technical Specification)
Part 7 - Implementation in OWL+RDF (Committee Draft for Technical Specification)

Contact

Part 1-6, Nils Sandsmark, +47-67 57 73 73,  nils.sandsmark@posccaesar.com
Part 7 - Hans Teijgeler, hans.teijgeler@quicknet.nl

Usage

General-purpose lifecycle data integration architecture for process plant information.

Scope

ISO 15926 is an International Standard for the representation of lifecycle information for process plants, including oil and gas production facility.  This is specified by a generic, conceptual data model that is suitable as the basis for implementation in a shared database or data warehouse.

ISO 15926 is divided into a number of parts.

• ISO 15926-1 Overview - Overview and fundamental principle

• ISO 15926-2 Data Model - specifies a generic, conceptual data model that supports representation of all lifecycle aspects of an oil and gas production facility or a process plant. This model is also the basis for ISO 10303-221. The basis of this model is the EPISTLE Core Model (ECM).

• ISO 15926-4 Reference Data - defines the initial set of standard reference data for oil and gas production facilities.  This part is also known as the EPISTLE Reference Data Library (ERDL).  It defines standard data model terminology that is used with the Part 2 core data model.  It is a managed collection of process plant lifecycle data classes which are common to many process plants or of interest to many users.  

• ISO 15926-5 Registration Procedure - specifies the procedures to be followed for registration and maintenance of reference data. 

• ISO 15926-6 Reference Data Additions - specifies the scope and information required when defining additions to the ISO 15926 reference data library 6

• ISO-15926-7Implementation in OWL+RDF - specifies the methods by which part 2 and part 4 can be implemented using Semantic Web technologies defined by W3C.  

  The data model of ISO 15926-2 is generic and highly normalized. Next to this being an advantage (scope changes do not result in data model changes) it is difficult to implement in a standard manner, because it nearly has the flexibility of a natural language. Therefore the concept of 'templates', standardized 'sentences' using ISO 15926-2 ‘grammar’ and ISO 15926-4 ‘words’ has been introduced in ISO 15926 Part 7.

  ISO 15926-7 specifies implementation methods for integration, sharing, exchange, and hand-over of lifecycle information about process plants, based on the data model of ISO 15926-2.

Overview of ISO 15926-7

The following is within the scope of this part of ISO 15926:

1. defining rules for applying RDF and OWL in the context of ISO 15926-7;
2. mapping of the data model of ISO 15926-2 from its EXPRESS format to the OWL format;
3. defining a methodology for creating an ontology for the ISO 15926-4 reference data in OWL format; these reference data and their extensions are mapped to the OWL format; this growing and normative library of reference data will be stored in a Façade under the custodianship of ISO, and be accessible from the Internet;
4. defining a methodology for user-defined specializations of classes defined in ISO 15926-4;
5. defining a format of specifications for templates; a growing and normative library of specifications will be stored in a web server under the custodianship of ISO, and be accessible from the Internet;
6. defining a methodology for creating an OWL ontology for templates based on these template specifications; a growing and normative library of templates will be stored in a Façade under the custodianship of ISO, and be accessible from the Internet;
7. defining a methodology for creating an OWL ontology for object information models ("OIM") that defines the types of information for any given instance of class during its lifetime; a growing and normative library of OIMs will be stored in a Façade under the custodianship of ISO, and be accessible from the Internet;
8. defining a methodology for creating, by any user organization, an OWL ontology for document types; each user organization that creates document types will store them in a Façade that is under his custody.
9. defining a methodology and rules for setting up web servers (called "Façades") for distributed integration of lifecycle information of a facility and its components;
10. defining a format for RDF/XML files for data transfer between a user system and a Façade, or between two Façades;
11. defining a methodology and rules for querying multiple Façades using SPARQL;
12. defining the minimum requirements for information presentation;
13. defining a methodology for formatting and parsing of RDF/XML files for information exchange between business partner;
14. defining an API (Application Programming Interface) for Façade.

The following is outside the scope of ISO 15926-7:

• mapping between any system-defined data format and the RDF/XML file format defined ISO 15926-7;
• mapping of SPARQL query results into any system-defined data format.

Characteristics

Domain

Industrial Process Facilities

Standard Type

Traditional

Standards Process

Standardize as Technical Specification, then implement, then continue towards Internaltion Standard status.

Intellectual Property (IP)

Royalty-free usage of International Standard purchased from ISO.

Cost of one interface

Unknown.  Depends upon the development of open source software development tools

File Format

RDF/XML

Focus

Scope

Highly abstract, generic core data model, which may be specialized through the use of domain-specific reference data libraries (data dictionaries and information models).

Scalability

Designed for implementation of large integrated systems of applications.  

Extensibility

Dynamically extensible between any two agreeable parties.

Model Content

Broad, /covers the entire lifecycle of a plant

Usage

Lifecycle data integration and sharing in a federation of data repositories.

Exchange Content

Aggregated references to the reference data library model (held in a repository)  in the form of template definitions.  These template definitions are used to validate template instances in RDF/XML that contain the data content.

Data model approach

Abstract domain approach using a highly abstract core model with domain-specific reference data library information model.

Benefits

Increases the cost efficiency of oil and gas facilities.

• Significant cost savings are expected from standardization of component specifications
• Design can be progressed in parallel with other engineering, planning, and logistical activities
• Improved efficiency and effectiveness of the operational phase of the plant
• Allows for statistical analysis resulting in discovery of knowledge

Status

Part 1 - International Standard (2004)
Part 2 - International Standard (2003)
Part 3 - Submitted for Technical Specification (2006)
Part 4 - Technical Specification (2007)
Part 5 -  New Work Item
Part 6 - New Work Item
Part 7 - Technical Specification (2007)

Plans for Part 7:  
Migration to compliance with the OWL-based W3C Semantic Web

Software

Open source tool set, as needed to implement the Part 7 architecture, is being built by the FIATECH ADI Project.

Deployment Status

The first results, focused on reference data, of a cooperation between the FIATECH ADI Project and the POSC/CAESAR IDS Project have been released.

Limitations

None, except for funding.

Additional Resources

The POSC/CAESAR IDS Project.