Anhydrous ammonia storage tank - internal inspection
Anhydrous ammonia storage tank - internal inspection
(OP)
We have recently replaced our anhydrous ammonia storage tanks. The originals began to suffer from stress corrosion cracking, ultimately blamed on the low water content of our product. (several hundred ppm of water passivates the steel preventing SCC). I can find no regulation defining the internal inspection frequency of these tanks, if any. Does anyone have any guidance?





RE: Anhydrous ammonia storage tank - internal inspection
http://www.leg.state.co.us/OSA/coauditor1.nsf/All/...
MJCronin
Sr. Process Engineer
RE: Anhydrous ammonia storage tank - internal inspection
M O Abdullah et al, Stress Corrosion Cracking, Crack Growth Prediction and Risk-Based Inspection Of Industrial Refrigerated Ammonia Tanks, Corrosion, Vol 67, (4), (online) pages 046001-1 - 046001-12
Steve Jones
Corrosion Management Consultant
http://www.linkedin.com/pub/8/83b/b04
All answers are personal opinions only and are in no way connected with any employer.
RE: Anhydrous ammonia storage tank - internal inspection
Good luck,
Latexman
Technically, the glass is always full - 1/2 air and 1/2 water.