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Articles

22
By: Dr. Matthew Smillie, Consultant Engineer, Quest Integrity

As seen in the July-September 2012 issue of Energy Generation

The rotors of heavy-duty gas turbines are exposed to the heat of combustion during their operation. This thermal loading, in addition to the mechanical loading due to self-weight and rotation, provides a challenge to the designers of gas turbines when aiming for the reliability demanded by the commercial requirements of operation. This article briefly introduces the particular issues of bearings in heavy-duty gas turbines, and then reviews a case study of a gas turbine bearing that could no longer hold its load and the situation surrounding its failure.

18
By: Devon Brendecke, Product Manager, Signal Fitness-For-Service

As seen in the August 2012 issue of BIC Magazine

Being able to rapidly assess damage uncovered during planned inspections is a major part of the success of fitness-for-service. Since every region of damage is unique, sometimes internally prepared spreadsheet calculations are insufficient to accurately assess a piece of equipment with damage. A comprehensive software program that automates many of the calculations can mean the difference between a timely return to service and extra shutdown time.



21
By J. Soltis, K. Lichti and A. Crisford, Quest Integrity Group

As seen in the September 2012 issue of Oil & Gas Australia

For oil and gas operators, CO2 corrosion is an on-going concern, as the industry relies primarily on the ability to use carbon steels within their facilities.

17
By: Brian D. Rose, Ph.D., P.E., Principal Consulting Engineer at Quest Integrity

As seen in the August 2012 edition of BIC Magazine

Advanced integrity assessments based on inspection results can demonstrate that tanks and their components are fit for continued service, allowing tank operators to often postpone repairs until the next shutdown, eliminate the need for repairs or be exempt from hydrostatic testing.

20
By: Lilly Darnell, Senior Marketing Specialist, Quest Integrity Group

As seen in the September 2012 issue of Pipelines International Magazine.

Offshore pipelines can be challenging to inspect due to limited launcher/receiver facilities or limited accessibility. Quest Integrity Group offers a solution for these historically difficult to inspect or unpiggable pipelines with its InVista™ in-line inspection tool.



19
Thanks to constantly improving technology developments, inspection of atmospheric storage tanks has yielded better data which, when used as input, improves the accuracy of advanced assessment techniques. Coupling the improved inspection data with an advanced engineering assessment often means that tank operators are able to postpone repairs until the next shutdown, eliminate the need for repairs or be exempt from hydrostatic testing.


12
As seen in the April 2012 issue of BIC Magazine

A client contracted with Quest Integrity Group to conduct and FTIS™ (Furnace Tube Inspection System) inspection on tubing coils in a Monomer Furnace as part of its integrity management program.

60
By: Quinton Rowson – Quest Integrity Group

As published in Energy Generation Magazine Jan-Mar 2012

The case study below of a compressor dovetail remnant life assessment demonstrates the implications of small aerodynamic loads. It also explains the use of computational fluid dynamics and finite element analysis stress modelling in obtaining the remnant life of compressor blades. Remnant life assessment determines the remaining life of a component due to a time- or cycle dependent material deteriorating process, for example, creep or fatigue.

10
Quest Integrity Group was approached by a client to inspect two sections of an unpiggable 14† high pressure gas pipeline in Australia. The line is over 40 years old and the client wished to evaluate its integrity so as to ensure safe operation for the remaining life of the affected facility. Quest Integrity utilized its InVista™ intelligent pigging technology to perform the inspection.

9
Inspection and fitness-for-service (FFS) of critical in-plant piping systems remain an ongoing concern for the chemical industry. Recent failures in the US indicate that there is a present and severe risk in piping systems. Historically unpiggable in-plant piping can now be inspected with advanced smart pigging technology for complete ultrasonic inspection. High-resolution inspection data is analyzed to identify the locations and degree of corrosion and piping deformations. This article discusses current industry experience with the inspection and assessment of in-plant piping systems using advanced smart pigging technology.

70
By: Dan Revelle, Manager Pipeline Services, Quest Integrity

This paper was presented at the November 2011 PPSA Conference in Aberdeen, Scotland.

Modern advances in inspection technologies now allow for inspection and assessment of these previously unpiggable pipelines providing today’s owner-operators a varied range of inspection options. By examining the results of various inspection methods and detailing how inspection data is used for assessment and asset management, we can understand how inspection data ties into the larger decision making process.
continue to: questintegrity.com

8
As seen in the August 2011 edition of Pipeline & Gas Journal

Advances in in-line inspection (ILI) tools and other inspection technology today allow for detailed assessment of unpiggable or difficult-to-pig pipelines.

71
By: Dan Revelle, Quest Integrity

Understanding the capabilities of available in-line inspection tools is a key component of accurately managing and assessing pipeline integrity. Det Norske Veritas, USA, Inc. (DNV) was retained by a pipeline operator to provide support in evaluating the Quest Integrity InVista™ tool.
continue to: questintegrity.com

7
As seen in Pipeline & Gas Journal July 2011

Detecting and sizing flaws with advanced ultrasonic ILI tools, coupled with the API 579-2007 Fitness-for-Service approach to crack assessment, is a more efficient, reliable approach to determining pipeline FFS than hydro testing.




5
As seen in the May 2011 edition of HydroCarbon Engineering

Advanced integrity assessments based on inspection results can demonstrate that tanks and their components are fit for continued service. This allows tank operators to postpone tank repairs until the next shutdown, eliminate the need for repairs or be exempt from hydrostatic testing.