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Using Ultrasonic Technique to Determine Fitness for Service of FRP Equipment for Chemical Handling Applications

A case study of a fiberglass reinforced plastic scrubber which was evaluated with a novel ultrasonic technique followed by a destructive evaluation for retained mechanical properties and corrosion barrier condition. When compared, the results showed good correlation.

Product Number: 51317--8861-SG
ISBN: 8861 2017 CP
Author: Pradip Khaladkar
Publication Date: 2017
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$20.00
$20.00

Fiberglass reinforced plastic materials are well suited to a wide variety of chemical handling equipment where resistance to corrosion is required. A significant impediment to adoption of these materials for many suitable applications lies with the inability to do a fitness for service determination after the equipment and piping have been in service. This is largely due to the lack of effective non-destructive and non-intrusive techniques for plastic materials. This paper presents a case study of a fiberglass reinforced plastic scrubber which was evaluated with a novel ultrasonic technique followed by a destructive evaluation for retained mechanical properties and corrosion barrier condition. When compared, the results showed good correlation. Although the FRP unit was already discarded this study indicated that significant life had still remained.


Key words: Non-destructive testing, FRP, corrosion barrier, fitness for service

Fiberglass reinforced plastic materials are well suited to a wide variety of chemical handling equipment where resistance to corrosion is required. A significant impediment to adoption of these materials for many suitable applications lies with the inability to do a fitness for service determination after the equipment and piping have been in service. This is largely due to the lack of effective non-destructive and non-intrusive techniques for plastic materials. This paper presents a case study of a fiberglass reinforced plastic scrubber which was evaluated with a novel ultrasonic technique followed by a destructive evaluation for retained mechanical properties and corrosion barrier condition. When compared, the results showed good correlation. Although the FRP unit was already discarded this study indicated that significant life had still remained.


Key words: Non-destructive testing, FRP, corrosion barrier, fitness for service

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