Peter: This test plan was published by I.H., so I am surprised you believe it. Note that this confirms that I was right and you were wrong:
The flow meter is placed downstream from the customer site. The loop is unpressurized. There is a gravity return from the customer site back to the reactor. This document says there were two reservoirs. I believe in the final configuration there was only one, with a gravity return, meaning the return pipe was half empty. - Jed
