3″ Double Valve Enclosure

Problem Summary

separator-beru

Anomaly Description:
Underground piping was inspected and it was found that two valves in close proximity to each other had extensive corrosion on the body and bolting. The header piping is 2” and branches out the valve to 3”. The remaining wall thicknesses of piping between the valves were also below thickness specification.

Root causes:
Piping being underground and having damaged and missing paint coatings.

Integrity concerns:
The Remaining thicknesses of underground sections were below the minimum allowable value which posed the risks that leaks may occur in the near future, With Possible environmental contamination due to loss of containment.

Technical Details

Line Size:
Design Pressure:
Operating Pressure:
Design Temperature:
Operating Temperature:
Material:
Line Class:
3″
4.9 BAR
1 BAR
50°C
10°C
SA-333 Gr6
150
case-study-images-double-velve-enclosure-brocken1
case-study-images-double-velve-enclosure-brocken3

The Beruseal Solution

separator-beru

Clamp Design:
A straight line enclosure with two nozzles was designed to encapsulate both valves, Strongbacks were designed to contain the complete system in the event of complete failure of piping welds or valve bolting.

Seal:
Due to the enclosure being underground a polymer sealant injection would cause possible problems should the enclosure start leaking and the enclosure needs to be re-injected, no visible signs of a leak would be evident. Therefore a two part thermosetting resin was used to fill the complete cavity of the enclosure and encase the piping and the valves within the enclosure. This boasted a more permanent repair and the elimination of the enclosure leaking underground if the need of a re-injection arose.

case-study-images-double-velve-enclosure-fixed2
case-study-images-double-velve-enclosure-fixed1
case-study-images-double-velve-enclosure-fixed3
case-study-images-elboe-diamond-wrap-fixed2
case-study-images-elboe-diamond-wrap-fixed3
case-study-images-elboe-diamond-wrap-fixed4

Get in touch with Beruseal

  • On-site repairs for maximum up-time productivity
  • Improved Safety by reducing noise & emmissions
  • Equipment Integrity with international support & custom engineering

Our satisfied clients