substitution request - Alliance Construction Solutions

Project No.: 10145
550 15 th Street Dual Brand Hotel
03/16/2012
systems and must be acceptable to equipment manufacturers. Detergents, solvents and
other cleaning agents shall be compatible with process streams to be handled by systems
in which they are used.
C. After each section of piping and equipment has been flushed clean, remove strainers.
Clean and reinstall permanent strainers in system. Reconnect vessels, equipment and
piping and reinstall control valves, safety valves, controllers, rupture discs, orifice plates
and other instruments and with new gaskets, thread lubricants, etc. If a subsequent
pressure test is required, it may be necessary to leave some such items out of the system
until after completion of pressure test. For systems which must be hydrostatically tested
and dried, hydrostatic test may be connected prior to cleaning and drying.
D. Clean each vessel separately. If vessel or equipment is large enough to have a manhole,
use clean water to wash down all internal surfaces. Leave bottom open for trash and dirt
to drain thoroughly. If vessel is too small for flushing through a manhole, connect clean
water line to inlet and flush with a continuous flow of water in the same direction flow
would be if in service. The vessel should be full of water in order to have maximum
turbulence. Shut off flow and allow to drain. With drain still open, allow more water to
enter vessel for a short time to flush any remaining trash from the bottom.
E. Any filters used during construction shall be replaced with new filters during final cleanup.
1.35 SAFETY:
A. Refer to Division 1. Comply with the latest OSHA requirements as well as any additional
state and local regulations and any requirements of the Owner.
1.36 MAINTENANCE:
A. Twice during the warranty period, the Temperature Controls Contractor shall check all
controls in the building to ascertain that they are functioning as designed. This shall apply
to all thermostats, aquastats, humidistats, freezestats, and firestats. This portion of the
work shall be performed by the Contractor that installed the controls.
1.37 COORDINATION AND COOPERATION WITH OTHER TRADES:
A. The Contractor for this work shall examine the drawings and specifications for other parts
of the work, and if headroom or space conditions appear inadequate or if any
discrepancies occur between the plans for his work and the plans for the work of others,
he shall report such discrepancies to the Architect/Engineer and shall obtain written
instructions for any changes necessary to accommodate his work with the work of others.
Any changes in the work covered by this specification made necessary by the failure or
neglect of the Contractor to report such discrepancies shall be made by and at the
expense of this Contractor.
1.38 RESPONSIBILITY OF CONTRACTOR:
A. The Contractor is responsible for the complete and satisfactory installation of the work in
accordance with the true intent of the drawings and specifications. He shall provide,
without extra charge, all incidental items required, as a part of his work. The installation
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