substitution request - Alliance Construction Solutions

tightening, repairing, or replacing components as appropriate, and repeat
hydrostatic test until there are no leaks.
6. “Stop-Leak” compounds shall not be added to the system at any time.
3.09 ADJUSTING AND CLEANING:
A. General: Clean exterior surfaces of installed piping systems of superfluous materials, and
prepare for application of specified coatings (if any). Flush out piping systems with clean
water before proceeding with required tests. Inspect each run of each system for
completion of joints, supports and accessory items.
1. Inspect pressure piping in accordance with procedures of ASME B31.
B. Disinfect all potable water mains and water service piping in accordance with local health
department requirements. Submit test results report.
C. Clean and flush hydronic piping systems. Remove, clean, and replace strainer screens.
After cleaning and flushing hydronic piping system, but before balancing, remove
disposable fine mesh strainers in pump suction diffusers.
D. Mark calibrated nameplates of pump discharge valves after hydronic system balancing
has been completed, to permanently indicate final balanced position.
E. Chemical Treatment: Provide hydronic systems with a water analysis prepared by the
chemical treatment supplier to determine the type and level of chemicals required for
prevention of scale and corrosion. Perform initial treatment after completion of system
testing.
3.10 STERILIZATION:
A. Each unit of domestic water supply and distribution system shall be sterilized with liquid
chlorine or hypochlorite before acceptance for operation, in accordance with American
Water Works Association G601 “Standard for Disinfecting Water Mains.” Work shall be
done by contractor, and, unless otherwise required by legally constituted authorities having
jurisdiction, sterilization shall conform to the following:
B. Materials:
1. Liquid Chlorine: U.S. Army Specification No. 4-1.
2. Hypochlorite: Liquid shall conform to FS 0-C-114a, and Int. Amendment 3,
Grade D.
3. Method: Amount of chlorine used shall provide a concentration of not less than
50 parts per million.
4. Introduce chlorination material into lines and distribution system in manner
approved by the Architect/ Engineer.
5. After a contact period of not less than 24 hours, during which period chlorine
residual shall be maintained at not less than five parts per million, flush out
systems with clean water until residual content is not greater than 0.2 parts per
million.
6. Flush entire system, including all hose bibs, fixture outlets, dead ends, and other
points where stagnant water may collect.
7. Open and close valves in lines being sterilized several times during contact period.
Project No.: 10145
550 15th Street Dual Brand Hotel
03/16/2012
23 2113 - 18 HYDRONIC PIPING