Not New but it’s a Beginning –> Condensation-Induced Hydraulic Shock

[astromo]

Here’s a case study dating back to 2010 from the US CSB that demonstrates why it’s important to carefully cool/warm ammonia systems:
https://www.csb.gov/assets/1/20/final_csb_casestudy_millard_0114_0543pm.pdf?15378

If anyone asks why it’s good practice to be very careful around quickly changing sources of ammonia at different temperatures in refrigeration systems, then suggest to them that they watch the partner video from the CSB:
https://www.youtube.com/watch?v=_icf-5uoZbc

Admittedly it relates to a refrigerated cold store but even so, the study provides useful lessons for us all that can be applied to process plant design and operation. Unexpected power outages that can result in extended shutdown periods are not limited to a cold store. That situation can happen pretty well anywhere, anytime.

EDIT:
? or should this post be located over at: Incident Database ?

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