OCTOBER 2024 25 NURSE TANK We are all well aware that the selection and use of TC51 and ASME nurse tanks to transport anhydrous ammonia (NH3) is very strictly controlled by Transport Canada through the Transportation of Dangerous Goods Regulations (TDG). The TDG Regulations directly reference the current version of the CSA Standards B620 and B622 for the maintenance, testing, repair, and selection and use of a “means of containment” for NH3. All retailers and owners of these tanks must follow the CSA B620 maintenance, testing, inspection, and repair procedures to keep their nurse tank fleet in excellent and legal working condition. Wes Arnfinson, from Shur-Gro Farm Services Ltd. in Shoal Lake, Manitoba, said, “We have a mixture of non-postweld stress-relieved tanks on the three-year hydrostatic test cycle and post-weld stress-relieved (HT) tanks on the five-year hydrostatic cycle. We have them spread out, so they do not all require hydrostatic tests in the same year.” Arnfinson continued, “We share the testing equipment with our other branches, so this requires coordination of our schedules. In our case, we prefer to do our testing in late August. We try to leave all of our nurse tanks empty at the end of the spring season, and then we fill the tanks that do not require a hydrostatic test in late July with a fill program.” One of the most significant decisions regarding TC51 and ASME nurse tanks is deciding who will: look after hydrostatically testing your tanks and hoses; do the annual external visual inspections; perform the annual leak test; and prepare the documents you NURSE TANK SAFETY TRAINING & CAAR Transport Canada, CSA B620 - 20 and B622 - 2020 Glenn Dickson, Northern Sky APC Solutions Inc. CAAR Nurse Tank Safety Program is a two-day learning experience with the first day consisting of classroom instruction. Glenn Dickson photo
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