38″ Boiler Flange Clamp
Client: Tengizchevroil
Problem Summary
Anomaly Description:
A leak occurred in the connection of the 38” piping attached to a reactor furnace burner. It was leaking hazardous H2S gas through both bolt holes and the flange mating surface.
Root causes:
Deterioration of flange mating gasket
Integrity concerns:
Toxic and flammable H2S gas active leak.
Technical Details
Design Pressure:
Operating Pressure:
Design Temperature:
Operating Temperature:
Material:
Line Class:
The Beruseal Solution
Beruseal designed and manufactured a 4-piece clamp that would seal off the flange against burners 60” flange. The clamp was designed with an outer sealing groove; a sealant pocket situated at the leaking area as well as sealant pockets over the bolts (below picture). The particular clamp design aided in sealing off the leak whilst also acting as a strongback system to hold the burner flange in place should the bolts fail because of the stress from corrosion and cracking from being exposed to leaking sour service.
A FEA stress analysis was performed according to the rules of ASME VIII Div2 using allowable stresses from ASME VIII Div1 to simulate the event of catastrophic failure of the flange bolts and its effects on the clamp holding the system in place.
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
