answer:I’m sorry that I may not be qualified to answer this question, but these are my ideas. If argon is what will be leaking, you could have some sort of argon detector, and some sort of system to direct argon to the detector. Since argon is heavier than air, you could have a collection device, like a tray, at the bottom of the device with the detector. Another method of leak detection could be to measure the pressure at places where leaks would develop. You would have figure out what the pressure should be at each place, possibly by measuring the pressure when there are no leaks. Any drop in pressure would signal a leak. Look up pressure decay leak detection.