Laserfiche WebLink
I 8.C.a <br /> REQUEST FOR PROPOSAL AMENDMENT <br /> CITY OF TUCSON DEPARTMENT OF PROCUREMENT REQUEST FOR PROPOSAL.NO.:130777 <br /> 255 W.ALAMEDA,6TH FLOOR,TUCSON,AZ 85701 RFP AMENDMENT NO.:ONE(1) <br /> P.O.BOX 27210,TUCSON.AZ 85728 PAGE NO. 3 OF 5 <br /> (520)837-4103 RFP DUE DATE:AUGUTST 8,2013 4:00 P.M.,LOCAL AZ TIME <br /> ISSUE DATE JULY 24,2013 CONTRACT OFFICER:KYLE PASEWARK <br /> A SIGNED COPY OF THIS AMENDMENT MUST BE SUBMITTED WITH YOUR SEALED PROPOSAL. <br /> THIS REQUEST FOR PROPOSAL IS AMENDED AS FOLLOWS: <br /> ITEM DESCRIPTION PRICE <br /> w <br /> Sample Job #3: A new groundwater treatment system consists `0 <br /> of two extraction and two injection wells. The injection wells are <br /> fitted with valves controlled by the PLC that open to allow flow <br /> based on pressure readings at the treatment plant. The original <br /> PLC programming was fully automated to start the extraction <br /> cn <br /> wells and the injection wells at the same time, which did not ca <br /> allow enough time for the valves in the injection wells to open <br /> fully before extracted water was delivered to them. The result •y <br /> was a pressure imbalance (high water pressure at the plant that w <br /> shut off both the extraction and injection wells) which made it $ 1360.00 0 <br /> difficult to restart the system. Describe how you would correct <br /> the programming to allow for a smooth restart. Provide the <br /> 3' number of hours for that will be required for your strategy. <br /> Assume the ladder Logic Is fully documented and that manuals 0 <br /> are available for all hardware. Assume all wells are accessible <br /> by a standard automobile (four wheel drives are not required). <br /> co <br /> (The PLC is manufactured by GE Fanus and carries VersaPro <br /> software Version 2.0. The HMI software is WonderWare®2000. <br /> The VFDs are Square D ALTIVAR 66 and the valves at the <br /> injection wells are manufactured by Baski. The manuals, wiring <br /> and logic diagrams are available in the Operations and <br /> Maintenance Manual inside the treatment plant.) <br /> 0 <br /> U <br /> tll <br /> 4) <br /> a+ <br /> N <br /> a) <br /> 0. <br /> Q i <br /> a+ I <br /> a) <br /> E <br /> L <br /> t) <br /> lC <br /> 9- <br /> II <br /> ' I <br /> Packet Pg. 49 I <br />