Amine stress corrosion cracking
Amine stress corrosion cracking
(OP)
During inspection I experienced Leakage In lean amine line which is from flange side I tried to Check all ewelds by mean of Ultrasonic testing but face following difficulties,
1.Temperature of line is at higher side i.e.250 Deg F.
2.As leakage observed from flange thats why i tried to check weld/HAZ from flange side but it was not possible because area is not enough to provide access for shear wave examination.
Do any one share with me his experience regarding
1.Is this lean amine stress corrosion cracking.
2.If yes what is the best suitable method to detect this type of cracking in remaining joints of line which is working at 250 deg f.
3. iF NO THEN WHAT TYPE OF DEFECT/LEAKAGE IS THIS ALONG WITH CAUSES.
4. Is there any alternate for scanning of joints rather then Ultrasonic shear wave testing.
Looking for your cooperation
Regards
1.Temperature of line is at higher side i.e.250 Deg F.
2.As leakage observed from flange thats why i tried to check weld/HAZ from flange side but it was not possible because area is not enough to provide access for shear wave examination.
Do any one share with me his experience regarding
1.Is this lean amine stress corrosion cracking.
2.If yes what is the best suitable method to detect this type of cracking in remaining joints of line which is working at 250 deg f.
3. iF NO THEN WHAT TYPE OF DEFECT/LEAKAGE IS THIS ALONG WITH CAUSES.
4. Is there any alternate for scanning of joints rather then Ultrasonic shear wave testing.
Looking for your cooperation
Regards





RE: Amine stress corrosion cracking
RE: Amine stress corrosion cracking
You're note is un-clear, is the leak at the weld or at the flange? You may have SCC or flow accelerated corrosion at the weld. Profile radiograpy would be a good start to qualify the damage.
Good luck
RE: Amine stress corrosion cracking
Thanks for your valuable comments , leakage found on flange
RE: Amine stress corrosion cracking
Good luck.