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2008-276 D
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2008-276 D
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Last modified
4/11/2016 10:29:43 AM
Creation date
10/1/2015 12:34:52 AM
Metadata
Fields
Template:
Official Documents
Official Document Type
Contract
Approved Date
09/09/2008
Control Number
2008-276 D
Agenda Item Number
8.DD.
Entity Name
Interstate Engineering Corp.
Subject
South RO Water Treatment Plant Improvements Material and Equipment
Area
South RO Water Treatment Plant
Project Number
UCP 2859
Bid Number
2008027
Supplemental fields
SmeadsoftID
7558
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D . Section 11930 - Pump General <br /> E . Section 16483 - Variable Frequency Drives <br /> F . Section 16490 - Electric AC Induction Motors <br /> 1 .03 PUMP PERFORMANCE DATA & CERTIFIED TEST RESULTS <br /> A . Factory testing in accordance with the standards of the Hydraulic Institute shall be required <br /> for each pump . Factory testing will not be required for the rotating element replacement _ <br /> B . Certified pump performance curves shall be submitted for approval by the Engineer on all <br /> high service pumps prior to shipment. The certified pump performance curves shall be <br /> submitted, including head, capacity, brake horsepower, and pump efficiency for each pump <br /> supplied . Certified data shall be provided to indicate the NPSH required by the pump at the <br /> design point as specified . <br /> C . The pump shall be tested through the specified range of flow, and head/capacity/efficiency <br /> curves plotted at maximum output speed . During each test, the pump shall be run at each <br /> head condition for sufficient time to accurately determine discharge, head, power input, and <br /> efficiency. In addition to the four performance data points listed in Section 2 .02(B), six <br /> additional points of flow and head conditions shall be provided throughout the range of the <br /> entire curve. <br /> D . If any pump tested fails to meet any specification requirement it shall be modified until it <br /> meets all specification requirements. If any pump tested fails to meet the efficiency <br /> requirements at any of the listed flow or head conditions as specified and all reasonable <br /> attempts to correct the inefficiency are unsuccessful, the pump(s) shall be replaced with <br /> unit(s) which meets the specified requirements. Performance data must be the results of <br /> project pump and motor assemblies. Also report amperage and voltage of each power leg, <br /> efficiency, horsepower and NPSH. <br /> E . One motor shall be furnished with certified test results. The motor shall be subjected to a <br /> complete factory test consisting of full load heat run, percent slip, running light current, <br /> locked rotor current, breakdown torque (calculated), starting torque, winding resistance, high <br /> potential , efficiencies at 100, 75 and 50 percent of full load, and bearing inspection. The <br /> Engineer/Owner reserves the right to witness these tests. <br /> 1 .04 OPERATION <br /> A. The pumps will provide potable water to the distribution system from the ground storage <br /> tank The pump motor shall be driven by a VFD and shall be compatible with the VFD unit <br /> supplied. <br /> i <br /> 044572017 <br /> 11934-2 <br />
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