Bud (the senior instrument engineer) and Bob (the new instrument engineer) were on the trip to automate the start-up of the new water injection pump. They caught people's attention because they were wearing coverall clothes and carrying their hardhats on their way from the hotel to the plant.
Bob: Wow, Bud, I wonder what would happen on this start-up. I think it would be great since the simulations you did showed the stuff would work just fine.
Bud: Bob, anything can go wrong in the start-up. There is plenty that can go wrong with this system. The new control system must control the new water injection pump because the existing 2x100% water injection pumps only have design flow rate if 30,000 BWPD. but the actual produced water flows in excess of the 60,000 BWPD. So we need a third one and the pumps will be operated 3x50%. There is a level controller of the of the produced water vessel to control a downstream control valve . Valve travel would have effect on the flowrate, This could result erratic control with poor stability and accuracy.
