Sounds like marketing got in a hurry and and inked a deal on a napkin over a bottle of wine and did not envolve engineering until the deal was made. Am I close?
No one really addressed your water injection question and I do not know the answer either but it is not uncommon to find water injection on natural gas turbines as a NOx reduction measure to meet state set limits.
Modco and Yale both manufacture pipeline closures for pig traps and blowdown stacks.
You can find modco at www.modernsupplyinc.com/modco.htm and Yale at rmenergy.com/products/openclose.htm.
