The very best training sessions are those that get really conversational. Discussing case studies and reviewing alternative strategies are the root of “I learn as I teach.” One question asked this week was, “Do clients know to turn on their pressure builder isolation valves as soon as they receive their liquid cylinders?” The conclusion was that all too many users don’t know not to turn on the pressure builders on receipt.
A somewhat difficult issue applies when a system is set up with a primary and secondary bank of liquid cylinders tied into an automatic switch over control system. When the online bank of liquid oxygen, nitrogen or argon liquid cylinders runs low the system automatically switches over to the other bank. Since this could happen at almost any time the pressure builder(PB) valves have to remain open on the reserve bank.
If, though, it is known that the reserve bank will not go on line for several days then it is advisable to not turn on the PB valves right away. This is especially true if you have a Friday delivery to a facility that does not operate over the weekend. Just waiting until Monday to turn on the PB valve can add many days to the life of the liquid cylinders and greatly reduce product wasted to venting.
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