Influent Pump Replacement – Pumps No. 1, 4 & 5

SECTION 01800
CITY OF ITHACA
TESTS ON PUMPING EQUIPMENT
PART 1 GENERAL
1.1 SUMMARY
A. This Section includes requirements for shop hydrostatic testing, shop performance
testing, and field running testing for each pump provided, unless otherwise specified.
1.2 REFERENCES
A. Testing shall be in accordance with the latest revisions of the following codes,
standards and specifications, except where more stringent requirements have been
specified herein:
1. Hydraulic Institute Standards (HIS)
1.3 SUBMITTALS
A. In addition to those submittals identified in the General Conditions, the following
items shall be submitted:
1. Shop hydrostatic test results, for each pump tested.
2. Shop performance test results, in the form of performance curves certified as to actual
test date and witness, for each pump tested.
3. Variable speed performance curves for each VFDequipped pump, between 50% and
100% of rated speed in 50 rpm increments, developed by the pump manufacturer using
affinity laws based on shop test results at maximum speed.
4. Field running vibration analysis report.
PART 2 PRODUCTS
2.1 GENERAL
A. Model test for performance will not be allowed.
B. In general, shop testing will not be witnessed by the Engineer. In specific cases, where
scheduled in specifications for certain equipment, allow Engineer and/or Owner to
witness shop testing.
2.2 TEST EQUIPMENT
A. Manufacturer shall furnish materials and equipment including drives required to
perform shop test.
B. Contractor shall furnish materials and equipment required to perform field test.
City of Ithaca 01800-1
Water and Sewer Division

SECTION 01800
CITY OF ITHACA
PART 3 EXECUTION
3.1 SHOP HYDROSTATIC TEST
A. Hydrostatic pressure test shall be at a pressure equal to not less than twice the
specified shutoff head or 150 psi, whichever is greater.
B. The casings and heads shall show no:
1. Undue deflection
2. Sign of weakness
3. Sweating through porous metal
4. Leakage
3.2 SHOP PERFORMANCE TEST
A. Each pump shall be tested at maximum rated speed over a range of operating
conditions to develop its performance curves for:
1. Headcapacity
2. Power input (BHP)
3. Efficiency
B. Suction performance
1. Tests for net positive suction head (NPSH) shall be performed where scheduled.
3.3 SHOP VIBRATION TEST
A. A signature shop vibration test shall be performed on each pump in accordance with
ANSI/HI 11.6, to demonstrate compliance with ANSI/HI 11.6 and the manufacturer's
requirements.
B. The shop vibration test shall be performed in conjunction with the shop performance
test.
C. A complete report shall be submitted to the Engineer for review and shall include, at a
minimum, the following items:
1. Description of the procedures and equipment used to complete the test.
2. Comparison between actual measured values and acceptable values.
3. Written statement from the pump manufacturer that the measured values are in
compliance with ANSI/HI 11.6 and the manufacturer's requirements.
4. Measured vibration values shall not exceed the allowable vibration limits specified in
ANSI/HI 11.6.
3.4 FIELD RUNNING TEST
A. Each pump assembly with its drive unit and auxiliary equipment shall be field tested
after installation.
B. Test shall not be started on any pump assembly until a manufacturer's representative is
present and has completed the inspection for proper assembly, erection and alignment.
1. Manufacturer's representative shall supply a certification of installation.
City of Ithaca 01800-2
Water and Sewer Division

SECTION 01800
CITY OF ITHACA
C. Test shall be conducted by the Contractor and the manufacturer's representative and
witnessed by the Engineer, and shall demonstrate the following under operating
conditions:
1. Pump has been properly installed and has no mechanical defects.
2. Pump is in proper alignment and has been properly connected.
3. Pump is free from undue vibration over the full range of operating conditions.
4. Pump is free from overloading and overheating.
5. The pumps can pass the size of solids specified. The contractor shall provide all
temporary flow measurement devices as necessary to achieve accurate measurements of
the pumped flow during test.
D. Power for testing will be provided by the Owner.
3.5 ACCEPTANCE
A. Acceptance of hydraulic performance shall depend upon satisfactory shop
performance test as demonstrated by certified performance curves.
B. Final acceptance of each pumping unit shall depend upon satisfactory operation as
demonstrated by the field running test and operation under field conditions.
C. Prior to final acceptance the Contractor shall correct all deficiencies.
3.6 FINAL ALIGNMENT
A. After 24 hours of operation the alignment of the unit shall be checked and adjusted, if
required.
B. Where required
+ + END OF SECTION + +
City of Ithaca 01800-3
Water and Sewer Division