Can Fiber Reinforced Plastic (FRP) be used in the sour service?

Asked by cobiesmith 6 years, 1 month ago | 3 Answers

Can I specify the use of Fiber Reinforced Plastic (FRP) in the sour service (H2S)?


3 Answers

1
wangroc 6 years, 1 month ago

The seal can be selected using the following guidelines:

  Elast-O-Lion 101 (HNBR) Elast-O-Lion 985 (HNBR) Aflas (FEPM) Kalrez (FFKM) PTFE
Temperature -29 to 150 °C -55 to 150 °C 5 to 200 °C 5 to 325 °C -100 to 200 °C
H2S Content Approx. 1,000 ppm Approx. 1,000 ppm High resistance
(< 5%)
High resistance
(> 5%)
High resistance
(> 5%)
Rapid Gas Decompression Resistant Yes Yes Yes Yes Different type of seal configuration is required compared to elastomers when used as a seal.

 


1
wangroc 6 years, 1 month ago
No. Fiber reinforced plastic (FRP) should not be used in the sour environment.

0
Normandy 6 years, 1 month ago

I'd like to add that Cadmium and Galvanized Plating should never be used in sour service.

Fusion bonded cladding and overlaying with CRA material should be considered as an effective barrier against H2S environment provided the CRA material is suitable for the specific process conditions.

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