HomeMy WebLinkAbout~Master - Change Order No. 1 to Engineering Services Agreement for Distributed Control System for Power Plant RESOLUTION NO. 14-618
RESOLUTION APPROVING CHANGE ORDER NO. 1 TO ENGINEERING SERVICES
AGREEMENT FOR CONVERSION OF POWER PLANT
FROM COAL TO NATURAL GAS
FOR THE CITY OF AMES,IOWA
WHEREAS, in November 2013, the City Council voted to convert the City's Power Plant
from coal to natural gas; and,
WHEREAS, on May 27, 2014, City Council awarded a contract to Sargent&Lundy,LLC,
of Chicago,Illinois,for engineering services required to convert the Power Plant to natural gas,and
that contract was in the not-to-exceed amount of$1,995,000; and,
WHEREAS, as part of Sargent & Lundy's (S&L) original scope of work, it was tasked to
review and evaluate the Power Plant's existing Emerson Ovation Distributed Control System, and
the Distributed Control System(DCS) is the dedicated control system used for boiler controls and
power plant systems; and,
WHEREAS, S&L's contract included an assessment of whether the current DCS could
handle the conversion to natural gas, and in addition, that contract required S&L to develop plans
and specifications for new DCS hardware and software; and,
WHEREAS, that task would occur whether the new hardware and software augmented or
replaced the current DCS, and this task has now been completed within the amount approved for
S&L's engineering contract; and,
WHEREAS,City staff received S&L's DCS report in September,and this report confirmed
that the pre-2000 era Emerson Ovation system is no longer supported by the manufacturer; this
includes both the hardware and software of the existing system; and,
WHEREAS, more recent equipment shipped to the Power Plant in 2007 for a previous
upgrade project was also found to be no longer supported, since it is based on a Windows XP
operating system; and,
WHEREAS,the initial evaluation of the DCS system was included in S&L's initial contract
in order to verify whether replacement was truly needed,and based upon S&L's evaluation,staff has
confirmed that it is clearly in the City's interest to incorporate replacement of the existing DCS
system into the larger gas conversion project; and,
WHEREAS,it is staff s recommendation that a new DCS be procured for the Boiler Natural
Gas Conversion Project, and that all functions of the Main and Auxiliary Control Boards be
integrated into the new DCS; and,
WHEREAS,Change Order No. 1 includes engineering and design dollars for those elements,
as well as for a new Control/DCS cabinet room; and,
WHEREAS, in total, this Change Order will add an additional $2,395,000 to the existing
S&L Engineering Services Agreement, and will bring S&L's total not-to-exceed contract amount
to $4,390,000; and,
WHEREAS, funding to cover this Change Order, as well as to purchase and install the new
DCS, is available from savings in the overall fuel conversion project budget.
NOW, THEREFORE, BE IT RESOLVED by the City Council of the City of Ames, Iowa,
that Change Order No. 1 to the Engineering Services Agreement with Sargent & Lundy, LLC, to
design the installation of the DCS,design the control room and DCS cabinet room,and integrate the
main and auxiliary control boards into the DCS at a cost not to exceed $2,395,000 is hereby
approved.
ADOPTED THIS 25th day of November, 2014.
Asow t// G� ,
Diane R. Voss, City Clerk Ann H. Campbell, Mayor
Introduced by: Gartin
Seconded by: Corrieri
Voting aye: Betcher, Corrieri, Gartin, Goodman,Nelson, Orazem
Voting nay: None Absent: None
Resolution declared adopted and signed by the Mayor this 25th day of November, 2014.