Availability Assurance

The ISO 55001 standard, issued early in 2014, sets requirements for an asset management system as part of a risk based internal control system. For the petroleum, petrochemical and natural gas industries, the ISO 20815 standard, issued in 2008, provides guidance for production assurance and reliability management during project development. The Availability Assurance Charter, based on best practices and developed since 2001, provides a bridge between the project development and the asset management standards that covers all three key areas, long term term planning, project development and operations. The charter covers a somewhat wider area than what ISO 55001 requires because it also addresses parts of the long term planning and the project development processes. The ARTIS Live guideline outlines what it means to develop and sustain a risk based approach, for the dimension of production availability, with the ARTIS Live application as one of the asset management plans, in line with the requirements of the ISO standard. The ARTIS Live application enables the organisation to optimise its responses to the risks to and opportunities for the production availability and maximise the lifetime value of their assets.

In the context of long term planning, that is the optimisation of the strategic asset management plan, the availability models of the individual assets are combined to form a corporate production availability model. This is assisting with the analysis of security of supply questions and provides a quantitative basis for capacity margin discussions. The integrated model provides a transparent and structured channel to collect downtime information from the fields.

For example, many oil and gas producers supply the associated and non-associated gas from their fields to gas handling and LNG producing ventures. In order to satisfy oil export targets and the long-term commitments of natural gas supplies and LNG deliveries, continued expansions and redevelopments of the oil and gas production and supply networks are planned. An understanding of the integrated availability of these facilities is of strategic and commercial importance for making the best development choices, in particular regarding development concepts, capacities and timing.

Availability assurance in project development covers the estabishment of the ARTIS Live application as the asset management plan for addressing the risks to production availability, as part of an asset management system that meets the ISO 55001 requirements. Developed since 2001, originally based on best practices used at NAM in Groningen, it has been the best practice for major projects for ensuring that the proposed facilities meet the plant availability and capacity utilisation targets. The practice leads to a better understanding of how the process systems are expected to perform and deliver the results required. An availability model is developed to describe the proposed new plant extension, as an integrated part of the project development. The model results provide a coherent framework for the identification of design limitations, the prioritisation of potential bottlenecks and the evaluation of design alternatives. The studies aim to put full control on the production availability in the hands of the project development team.

Availability Assurance in operations focuses on establishing and sustaining an ARTIS Live application for production availability target setting, performance monitoring and reporting key availability indicators on a quarterly and annual basis, maintenance and integrity planning, and providing a vehicle for he asset management learning cycle.

The integrated availability models provide:

Production availability monitoring provides a powerful way to compare different operator shifts, management scenarios and maintenance strategies and drive changes in production availability targets over the life of the asset. It can also highlight emerging production availability bottlenecks before they actually become constraining.

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