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Title: How to inspect platforms and risers: an effective approach and new challenges
Category: Pigsource Papers
Downloadable: Yes 
Project No.:
Research Agency:
Catalog No.: pg3380
Date of Publication: Feb 1 2003 12:00AM
Price: $25.00 US
Authors: Robert van Agthoven and Jan A de Raad
Abstract: Ageing risers on offshore platforms, designed and built several decades ago, were until recently hard to inspect or not inspectable at all. This was due to their lay-out or for other reasons prohibiting the use of common self contained product propelled intelligent pigs which are frequently used on long distance pipelines.

Growing concerns about reliability and safety as well as environmental pressure were the impetus for operators of offshore platforms to check the condition of the risers which so far could not be inspected.

This paper describes a few solutions to enter these “non-inspectable” risers to check their condition by using special small diameter cable operated tools.

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