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POSC Caesar Association

POSC Caesar Association (PCA) is a non-profit global-standardisation member organisation that shall promote the development of open specifications to be used as standards for enabling the interoperability of data, software and related matters.

PCA initiated ISO 15926 “Integration of life-cycle data for process plants including oil and gas production facilities" and is committed to its maintenance and enhancement.

Join for membership!


Americas PCA Forum and Member Meeting

PCA invites you to attend the OpenO&M/MIMOSA and PCA Forum – Americas 2011, which will be held 22-24 February 2011 in Houston, USA. The PCA Forum is open to both PCA and non PCA members. More about the event here.

JORD Participation Invited

(Joint Operational Reference Data)

PCA and FIATECH members and non-members - anyone who recognizes that their adoption of ISO15926 depends on shared reference data - are invited to support the joint initiative to enhance operational reference data services.

The JORD Sponsorship Prospectus is published here, and the full JORD Business Definition is available on request. Contact:

  • Ian Glendinning JORD Project Manager (ian [at] glencois [dot] com );
  • Nils Sandsmark PCA General Manager ( nils [dot] sandsmark [at] posccaesar [dot] org );
  • Ray Topping FIATECH Director ( raytopping [at] comcast [dot] net ).

New PCA member

PCA welcomes as new member.

New PCA member

PCA welcomes Glenco IS (Information Services) Ltd as new member.

Presentations from Asia and Australia PCA Forum and Member meeting

The presentations from the Asia and Australia PCA Forum and Members Meeting 2010 in Kuala Lumpur are available. The presentations can be found here.

Invitation to Plant-Tech 2010

Plant-Tech 2010, the 5th edition of the European Plant Engineering and Design Conference, the premier European event for plant engineering and plant design for the oil and gas industry. Plant-Tech 2010, the European Plant Engineering and Plant Design event will take place at the Amsterdam RAI Convention Centre, The Netherlands on the 7th and 8th of December. For more information, see

For PCA members, see internal member pages for discount and more information.

JORD - PCA & FIATECH Announce Joint Operational Reference Data Initiative

POSC Caesar Association (PCA) and FIATECH have agreed on a single “Joint Operational Reference Data” project plan to create in 2010 a stable, scalable and commercially-viable operation of the ISO15926 reference data system and associated services. here

News Archive

For older news postings, please have a look in the News Archive

ISO 15926-2 in OWL as visualized by the GrOWL Protege plugin

ISO 15926

PCA initiated ISO 15926 in 1997 and has chaired the group in ISO TC184/SC4 accountable for ISO 15926 ever since. The first four parts have been completed as ISO standards while the Parts 6 and 7 are still in progress.

A statement from the IT industry:

ISO 15926 is extraordinarily robust and complete, both in its specification and the technical infrastructure through which it is deployed. These characteristics differentiate ISO 15926 from other, less formal attempts at standards development. Other standards initiatives have broken down due to their inability to scale the submissions process, cover the structural requirements of multiple disciplines and provide an enterprise-grade technology foundation.

Reference Data Service (RDS)

PCA operates the RDS as a public service for the global process industry including oil and gas. RDS contains all reference data in ISO 15926, the Oil & Gas Ontology (OGO), reference data from EU projects in environment and pipelines, reference data for capital intensive project, as well as some reference data from defence and ship industries. The Norwegian Ministry of Defence, Det Norske Veritas (DNV) and Norwegian Oil Industry (OLF) have funded the development of The Reference Data System and is now funding the operation of the system.

Integrated Operations

The Norwegian Oil Industry (OLF) has defined IO as "real time data onshore from offshore fields and new integrated work processes". OLF has decided to use ISO 15926 as the instrument for integrating data across disciplines and business domains. This integration process requires an Oil & Gas Ontology (OGO). The OGO is stored in RDS and the Special Interest Groups (SIGs) continuously maintain, enhance and extend the ontologies within the different business domain in the EP value chain.

Semantic Days

Semantic Days is an annual conference that has become a meeting place for industrial use of semantic web technologies where also research institutions and universities make significant contributions. The conference has taken place in 2006, 2007, 2008, 2009 and 2010. Follow the links for programmes and presentations.

PCA - Forums and member meetings

PCA has three forums and member meetings yearly, in the Americas, Europe and Asia.

October 2009: Member meeting i K.L., Malaysia. The presentations and proceedings are found here

Febuary 2009: Member meeting i Houston, USA. Find presentations and the meeting program here

October 2008: Member meeting in K.L., Malaysia. presentations and meeting program here. More than 150 participated in the meeting. Follow the link for the presentations.


The POSC Caesar Association website is powered on Trac using a wiki, the svn version control system a ticketing system, discussion forums and more making the website a powerful and efficient tool for collaboration.

To get your PCA Trac account, send a request to RDS Operations Support Services.

About PCA
Reference Data Services