Terrence OHanlon

Failure is one of the basic concepts in the theory of reliability. In electrical engineering, the IEC 61508-4 definition applies (quote): «failure – the termination of the ability of a functional unit to perform a required function». CIGRE, a major failure, was defined as any situation which required the transformer to be removed from service for a period longer than 7 days for investigation, remedial work or replacement [1]. The authors of the cited works objectively could not adhere to any of… Show more

Failure is one of the basic concepts in the theory of reliability. In electrical engineering, the IEC 61508-4 definition applies (quote): «failure – the termination of the ability of a functional unit to perform a required function». CIGRE, a major failure, was defined as any situation which required the transformer to be removed from service for a period longer than 7 days for investigation, remedial work or replacement [1]. The authors of the cited works objectively could not adhere to any of these definitions since they wrote before the formulation of these definitions, but this is not fundamental for our review.

In the classical theory of reliability, the dependence of failures on the lifetime of an asset is described by the well-known bathtub curve (Fig. 1). It starts with Installation. Commissioning such complex equipment as the PT is fraught with dangers. First, the PT could very well have left the factory with an internal defect that didn’t show up until the transformer was stressed in transit. Cases of careless handling of cargo are not uncommon, especially on railways. Secondly, the installation process itself may include a sloppy moment or deviations from factory requirements. Finally, the PT is at great risk the moment it first turns on and experiences load conditions for the first time. The first part of the bathtub curve is called “Infant Mortality”. For PT, it has a duration of 3-5 years; failures during this period, in addition to those listed above, are also due to shortcomings in production technology and poor quality control.

The second part of the curve is called Normal Operation, which has random failures. This period for LPTs of advanced manufacturers lasts at least 25–35 years with good maintenance, that is, actions to detect, prevent or mitigate the degradation of the transformer. Show less

A historical review for utilities when developing specifications for new transformers – Part I

The further development of UHV and EHV transmission lines and the aging of large power transformers (half of which are over 30 years old) will keep the developers of specifications of new transformers working for many years to come. To help them, a historical overview of the failures of EHV transformers in the 20th century was made in terms of modern Asset Lifecycle theory embedded in the SDIPF… Show more

A historical review for utilities when developing specifications for new transformers – Part I

The further development of UHV and EHV transmission lines and the aging of large power transformers (half of which are over 30 years old) will keep the developers of specifications of new transformers working for many years to come. To help them, a historical overview of the failures of EHV transformers in the 20th century was made in terms of modern Asset Lifecycle theory embedded in the SDIPF curve (Specify – Design – Installation – Potential failure – Failure), has been made. The main causes of accidents were shortcomings in Specify and Design.

Engineers for the development of specifications for new transformers will not be left without work for a long time, according to the authors, at least half a century. There are two reasons for this: the further development of electric power transmission over long distances and the aging of the existing fleet of power transformers. Show less

This PDF article addresses a simple question: Do you mean Asset Management or Managing Assets? People and organizations have been caring for assets since mankind first invented tools. Over the years we have derived entire disciplines to help define the best ways to care for those assets through their lives and as such we have been Managing Assets for ever. With the advent of the formal discipline of Asset Management some 20 years ago there has been a development of structured approaches to… Show more

This PDF article addresses a simple question: Do you mean Asset Management or Managing Assets? People and organizations have been caring for assets since mankind first invented tools. Over the years we have derived entire disciplines to help define the best ways to care for those assets through their lives and as such we have been Managing Assets for ever. With the advent of the formal discipline of Asset Management some 20 years ago there has been a development of structured approaches to assure stakeholders that those care activities are focused on deriving value for the organization and not just promoting ‘gold-plated’ care arrangements. Show less

ISBN: 9781941872659

According to ISO55000, asset management is a coordinated set of activities designed to realize value from assets. This book focuses on doing the right things at a system-asset level in order to create greater value from assets during their life cycle. Implementing the 10 Rights of Asset Management discussed in this book will enable your organization to get more value from your assets and to be compliant with ISO55000.

The Uptime Elements Reliability Leadership System draws from a body of knowledge that is based on the Uptime Elements Passport series, various international standards, such as ISO55001 and ISO31000, assessments conducted at over 400 best practices organizations.

Simply put, Uptime Elements is a map for understanding the interrelated nature of reliability elements.
New reliability leaders will discover novel meaning to their work and interactions with the people they work with… Show more

The Uptime Elements Reliability Leadership System draws from a body of knowledge that is based on the Uptime Elements Passport series, various international standards, such as ISO55001 and ISO31000, assessments conducted at over 400 best practices organizations.

Simply put, Uptime Elements is a map for understanding the interrelated nature of reliability elements.
New reliability leaders will discover novel meaning to their work and interactions with the people they work with. Reliability leadership provides a basis for their decisions and will eventually drive transformation of the organization.

Moreover, it produces immediate and sustainable results for your organization, including:
• An engaged and empowered workforce aligned with the Aim of the organization;
• Improved financial results;
• Safety and environmental incident reduction;
• Sustainability and energy savings;
• Improved workforce recruitment and retention;
• Reputation and brand enhancement. Show less

Unlocking value from organizational assets. The ISO 55000 series of standards sets a framework for an asset management program to ensure value creation at any organization. The (New) Asset Management Handbook – A Guide to ISO55000 is written by asset management thought leaders, many of which contributed to ISO 55000, to provide the detail and insight necessary to implement an asset management program effectively.

Unlocking value from organizational assets. The ISO 55000 series of standards sets a framework for an asset management program to ensure value creation at any organization. The (New) Asset Management Handbook – A Guide to ISO55000 is written by asset management thought leaders, many of which contributed to ISO 55000, to provide the detail and insight necessary to implement an asset management program effectively.