As per the member alert that went out last week, Fertilizer Canada has updated control guidance on Emergency Discharge Requirements outlining changes CSA B620/622-20 effective January 1, 2022.

Fertilizer Canada previously sent a memo to all Anhydrous Ammonia Code of Practice Certified Sites & Code Auditors on March 23, 2021, with a reminder of the new standards for ammonia nurse tanks under CSA B620/622-20 which came into force May 31, 2021. The requirement for emergency discharge control came into force January 1, 2022.

Updated guidance on the Emergency Discharge Control requirements in Protocol C10.5. is now incorporated into Ammonia Code User Guide section C10.5.  A copy of the updated guidance in User Guide section C10.5 has now been added into the Ammonia Code User Guide available on Fertilizer Canada’s website.

For more information, please contact This email address is being protected from spambots. You need JavaScript enabled to view it., Fertilizer Canada Director, Policy & Industry Standards.

Technical questions on the standards and requirements can be directed to Transport Canada by email at This email address is being protected from spambots. You need JavaScript enabled to view it.. Please include the text “Highway tanks” or “TC Portable Tanks”, as applicable, in the subject line.