Hello Friends, Does it make sense to design a blowdown steam piping that is open to atmosphere for full vacuum? it is in SAGD operation where a 24", ANSI 150 class piping is releasing steam and water at 100 psi and 400F during steam gen blow down events to the pond. Rest of the time it is...
We are planning to weld A106 Gr.B (30.96 mm) to CSA Gr.448 (12.7mm). We will be using transition piece to weld these varying thicknesses. My welding engineer says that when we weld two materials of differing strengths if we choose filler material that matches the TS of weaker of the two that is...
Hello Friends, We had a failure (fish mouth) in our piping (106 Gr.B) due to freezing . There are theories that it might have failed due to local overpressure because of water trapped between two ice plugs or the pipe froze 100% and burst. One of the suggestions was to do Charpy Impact on the...
Hello Friends, We are dealing with Frozen A106 Gr.B piping due to hydrotest water left inside the line. The plan is to run Go-No Go gauge to determine any bulging and accept if no bulging is observed. The valves will be hydrotested seperately to assess their integrity. Is there anything else we...
Generally when a pipeline is protected by impressed current CP system it is required to disconnect the rectifier before starting any welding on the pipeline. Do we need to disconnect a Mag anode system as well. i believe the voltage and current involved is very low in sacrificial CP system and...
we have CSA Z662 disposal water pipeline (D.T = 85C and D.P = 5500 kpag) underground and at the wellhead facilities it changes to ASME B31.3 piping. A 2" CL 600 flange on B31.3 piping for temperature tansmitter was found to be CL 600 (PN 100)CSA Gr.359 Cat II and ASME B16.5/CSA 245.12.The flange...
In our SAGD facility, vessels in water deoiling unit and water treatment unit are internally coated with Two-Component Epoxy. We are experiencing severe blistering of the coating. Some blisters are 4" in dia. Does anybody dealing any issues like this? Willing to share some knowledge?
Dear Experts,
We have a carbon steel "Tee" joint in steam service experiencing rapid metal loss. We suspect FAC. I did some research on this forum and found P11 or P22 would be a good substitute to reduce the metal loss. Somebody in our group suggesting weld overlay. I am looking for some...
