Specifications

Department of Facilities Services
Chilled Water Distribution System
2013 Design Guidelines 32 | Page
Final Fill
If piping is to be isolated from the system for more than 7 days, add inhibitor to prevent corrosion. Inhibitor shall be
NALCO 3DT279. Molybdate inhibitor shall not be used. If the piping is being placed in service in less than 7 days, Chilled
Water Personnel will fill the system with water from the University Chilled Water System.
MECHANICAL INSULATION
Product Delivery, Storage and Handling
All insulation material shall be delivered to project site in original, unbroken factory packaging labeled with product
designation and thickness. Shipment of materials from manufacturer to installation location shall be in weathertight
transportation. Insulation materials delivered to jobsite shall be stored so as to protect materials from moisture and weather
during storage and installation. Insulation material shall be protected from long exposure to UV light from sun.
Application
Install Polyisocyanurate insulation as per manufacturer’s specifications.
Installation
Do not insulate any sections of piping that contain welded joints, threaded joints, flanges or instrumentation taps until the
pressure test has been completed. Any removal and reinstallation to correct system defects, prior to end of guarantee period
shall be accomplished at no expense to Owner.
All insulation installation methods shall be performed in accordance with the latest edition of National Commercial and
Industrial Insulation Standards published by MICA (Midwest Insulation Contractors Association) and manufacturer's
installation instructions, except as modified in this Section of specifications.
Install all products with good workmanship, with smooth and even surfaces. Use full-length factory furnished material where
possible. Do not use scrap piecing. Apply insulation only on clean, dry surfaces, after all rust and scale have been removed
and testing of systems has been completed.