D3. SCOPE OF WORK
D3.1 The Work to be done under the Contract shall consist of supply, installation, testing
and commissioning of three (3) new hot water boilers and associated systems in the existing Boiler
5 room at NEWPCC.
D3.2 The major components of the Work are as follows:
(a) Supply and install three (3) new hot water boilers, B-5A, B-5B, B-5C, c/w accessories and
through-wall vents. Related works include:
(i) Provide new penetrations in existing outside wall to accommodate the new boilers
through-wall venting.
(ii) Provide new combustion air and ventilation air openings in existing outside wall to
accommodate new boilers.
(iii) Repair and seal around new wall penetrations.
(iv) Provide temporary post supports in basement room beneath new boilers to reinforce floor
against the weight of the new boilers.
(b) Remove trees outside the south wall of Boiler 5 room, to accommodate through-wall venting of
new boilers.
(c) Supply and install new BP-5C hot water circulating pump for boiler B-5C. Re-use existing
pumps BP-35 and BP-36 as the hot water circulating pumps for B-5A and B5B, respectively. Supply and
install new low-flow circulating pump BP-5D for all 3 boilers.
(d) Supply and install new boiler hot water piping, consisting of:
(i) Tie-in pump BP-5C suction to the existing suction header of pumps BP-35 and BP- 36 (TP-03).
(ii) Tie-in to existing discharge valves of BP-35 and BP-36 (TP-01, TP-02), and run new
separate lines to boilers B-5A and B-5B.
(iii) Run piping from new pump BP-5C to boiler B-5C.
(iv) Connect outlet piping from new boilers into a header, and tie-in header to existing outlet
piping from boiler 5 (TP-04).
(v) Tie-in pump BP-5D suction to the existing suction header of BP-35 and BP-36 (TP- 07), and
run new low-flow piping to the main circulation lines to each boiler.
(e) Supply and install new boiler natural gas piping, consisting of:
(i) Tie-in to existing natural gas supply line to boiler 5 (TP-05) and run piping to new
boilers.
(ii) Provide new pressure-reducing regulator at each new boiler, and run pressure relief lines
from regulators to outdoors, repair and seal around new wall penetrations.
(f) Supply and install new boiler water relief blowdown piping, consisting of:
(i) Run piping from each new boiler water pressure relief valve into new blowdown header.
(ii) Run new blowdown header into existing main boiler room, and tie-in to existing piping near
blowdown tank (TP-06).
(g) Remove obsolete hot water and natural gas piping around existing Boiler 5 as required to
accommodate new piping tie-ins.
(h) Supply and install three (3) new funnel drains near new boilers, and new drainage piping to
existing sump pit in existing main boiler room.
(i) Provide modifications to existing boiler plant control system to integrate control of new
boilers into the existing system.
(j) Provide testing and commissioning of new hot water boilers.
D3.3 Separate Price 1 – Deletion of Boiler B-5C shall include;
(a) The supply and installation of boiler B-5C and associated Work. The scope of this Work
includes, but is not limited to, the below items. Refer to Drawings for further details.
(i) Supply and installation of Boiler B-5C, including associated hot water, natural gas, relief
blowdown, vent piping, and associated power and control wiring.
(ii) Equipment, valves and accessories associated with B-5C hot water, natural gas, relief
blowdown, vent piping, and associated power and control wiring.
(iii) Installation of hot water recirculation pump BP-5C and associated piping, including
tie-in to the existing suction header of BP-35 and BP-36 (TP-03).
(iv) Wall penetrations and other construction Works for the installation of B-5C.
(v) Installation of hot water recirculation pump BP-5C starter and associated power and control
wiring and devices.
(vi) Boiler B-5C and associated recirculation pump BP-5C testing and commissioning.
D3.4 The following shall apply to the Services:
(a) City of Winnipeg Green Building Policy: New City-Owned Buildings and major additions;
http://clkapps.winnipeg.ca/DMIS/DocExt/ViewDoc.asp?DocumentTypeId=2&DocId=5989
(b) Universal Design Policy
http://clkapps.winnipeg.ca/DMIS/DocExt/ViewDoc.asp?DocumentTypeId=2&DocId=3604
D3.5 The funds available for this contract are $900,000.00.
