City of Saratoga Springs
OFFICE OF COMMISSIONER OF ACCOUNTS
Purchasing Department
474 Broadway
Saratoga Springs, New York 12866
_____________________
Telephone 518-587-3550
Fax 518-587-6512
JOHN P. FRANCK
COMMISSIONER
MAIRE MASTERSON
DEPUTY COMMISSIONER
April 6, 2016
Addendum #2
Adams Street Pump Station Mechanical Upgrades 2016-03
Content of Addendum:
1. Pre-Bid Meeting
a. Meeting Notes of the March 22nd Pre-Bid meeting are attached.
b. Additional Pre-Bid meetings will not be held.
2. List of Specification Revisions:
a. Section 221329 – Sanitary Sewerage Pumps and Equipment. Revised specification
section attached. Revisions listed below:
i. Part 1.3.D.2
ii. Part 2.1.I
iii. Part 2.1.Q
iv. Part 2.1.R.3
v. Part 2.1.R.3.d
vi. Part 2.1.R.4.t.3
vii. Part 2.1.R.5.c.1
viii. Part 2.2.B
ix. Part 2.2.E
x. Part 2.2.F.4
xi. Part 2.3.C
xii. Part 2.3.I
xiii. Part 2.3.O.6
xiv. Part 2.3.Q.3.d
xv. Part 2.3.Q.4.i
xvi. Part 2.3.Q.4.s
xvii. Part 2.3.Q.5.b and c
xviii. Part 2.4.A
xix. Part 2.4.C.1.a
xx. Part 2.4.C.2.d
xxi. Part 2.4.D
b. Section 262813 – Fuses. Revised specification section attached. Revisions listed
below:
i. Part 1.3.A
ii. Part 1.4
1
iii. Part 1.5
iv. Part 1.6
v. Part 3.1
c. Section 262816 – Enclosed Switches and Circuit Breakers. Revised specification
section attached. Revisions listed below:
i. Part 1.6
ii. Part 2.1.B
iii. Part 2.1.C.3
3. Submersible Mixer
a. A Pressure transducer has been specified to serve the Submersible mixer. See
attached revised plan sheets and specifications.
b. Jet Assembly Ring / Anti-Cavitation Shroud shall be provided with the Submersible
mixer. See attached revised specification section 221329.
4. Sewage Grinder
a. Motor is a 5HP Explosion Proof Motor as per 2.2.F.3.a.
b. See Note 9 Sheet PS-2.
c. Channel width is approximately 24 inches to be verified in field.
5. Pump Disconnect Switches shall be fusible with Fast-Acting fuses to act as redundant
protection for PumpSmart VFD’s. See attached revised plan sheets and specifications.
6. Existing Alarm System and Tie-In
a. Existing “Mahoney” alarm system panel box located inside dry well.
b. 2.3V circuit with capacity for four (4) outgoing alarm signals.
c. The existing alarm for station flood / high level to remain (served by existing float
switches in dry pit and wet well).
d. Three (3) new outgoing alarm signals shall be installed:
i. Pump Failure (single outgoing signal for all failure options)
ii. Grinder Failure (single outgoing signal for all failure options)
iii. Mixer Failure (single outgoing signal for all failure options)
e. Contractor shall furnish and install conduits, boxes, wiring, etc. as necessary to
transmit signal from pump, grinder and mixer control panels to existing alarm panel
box.
f.
See attached revised plan sheets.
7. Existing Stilling Well / Transducer Cables in Dry Pit
a. 3 ft. extension riser shall be added to the existing stilling well in the Dry Pit. Top of
extension shall be capped with blind flange.
b. Gas-Tight junction box shall be furnished and installed at the stilling well extension
riser to facilitate easy disconnection of pressure transducers for maintenance, removal,
or replacement. Conduits/wiring between junction box and control panel shall be routed
under/across the catwalk platform and up wall to new pump control panel, and shall be
sealed and constructed in accordance with NEC Article 501 to prevent gasses from
entering pump control panel.
2
c. Transducers and all associated work shall be Intrinsically Safe.
d. See attached revised plan sheets.
8. Bypass Pumping
a. Existing Overhead Electrical Service – Details are unknown. Contractors shall
anticipate feeding temporary electric bypass pump from the building at 208V with buck
boost type transformer if necessary.
b. Additional TDH and Flow Information
i. Most recent Pump Station test conducted in March 2015 indicated a pump
discharge pressure of 18.5 psi (43 FT head) on gauge at the pump with
approximate calculated flow of 350 gpm through both forcemains.
ii. The maximum computed inflow rate to the station observed during various
pump station tests conducted between 2010 and 2015 was 250 gpm. The
calculated potential peak inflow to the station is 450 gpm. The bypass pumping
system shall be capable of handling a peak flow of 450 gpm.
c. Surcharge levels in the existing manhole for pump suction shall be kept to a minimum
(2’ depth or less).
d. A High Level Alarm with an Autodial to multiple emergency contacts shall be
incorporated into the bypass pumping control system.
e. Diesel bypass pumps shall be furnished with noise enclosure housing incorporated.
Temporary fencing with sound blankets per the specifications shall also be provided.
f.
Contractor must keep Adams Street open with the use of flow through road ramps to
the extent possible.
Attachments to Addendum #1:
1.
2.
3.
4.
5.
6.
7.
8.
March 22nd, 2016 Pre-Bid Meeting Notes
Revised Specification Section 221329 – Sanitary Sewerage Pumps and Equipment
Revised Specification Section 262813 – Fuses
Revised Specification Section 262816 – Enclosed Switches and Circuit Breakers
Revised Plan Sheet PS-1R
Revised Plan Sheet PS-1
Revised Plan Sheet PS-2
Revised Plan Sheet D-2
3
Meeting Notes
PRE-BID MEETING
IFB 2016-03 Adams Street Pump Station Mechanical Upgrades
IFB 2016-04 Adams Street Pump Station Sewer and Forcemain Upgrades
City of Saratoga Springs, NY / Adams Street Pump Station Upgrades
Date/Time:
March 22, 2016 / 10:00 AM
Place:
Adams Street Pump Station, Adams Street, Saratoga Springs, NY
Attendees:
Bidder Sign-In Sheet for attending contractors attached;
David Hansen, P.E., Stantec Consulting;
Dan Rancour, City Electrician;
David Kownack, City Electrician;
Brian Marshall, Emerick Associates;
Timothy W. Wales, P.E., City Engineer.
Distribution:
All Attendees and Plan Holders
1. Introductions:
a. Dave Hansen – Stantec (consulting/design engineer to the City), introduced himself
and others in attendance: Dan Rancour – City Electrician, David Kownack – City
Electrician, Brian Marshall – Emerick Associates (FLYGT Local Supplier), and Tim Wales
– City Engineer (who arrived during the meeting due to conflict with another pre-bid
meeting).
2. Dave Hansen of Stantec proceeded to conduct the meeting following the Agenda which
was provided to all attendees. Summary as follows below.
3. Attendance:
a. All bidders input the required information on the meeting sign-in sheet.
b. Gallo Construction and JAT Construction provided payment and received Bid
Documents on CD’s at the meeting.
4. Project Description / Overview:
a. General Contract Info (applies to both contracts)
i. Lump Sum Contracts. Unit Price items in Bid Form describe the work but the
prices submitted are for Owners Information only. Basis of award will be the
Lump Sum price submitted in the table.
ii. City Forms and Apprenticeship Program (see instructions to bidders).
b. Pump Station Contract 2016-03
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March 22, 2016
PRE-BID MEETING
IFB 2016-03 Adams Street Pump Station Mechanical Upgrades
IFB 2016-04 Adams Street Pump Station Sewer and Forcemain Upgrades
Page 2 of 6
i. General Scope of Work:
1. Bypass pumping operations; two new FLYGT pumps with VFD’s and
control panel; remove 4-inch replace as 6-inch piping; new gate and
check valves; new sewage grinder with control panel mounted on
exterior wall of building; new FLYGT mixer with control panel mounted
on exterior wall of building; new electric heater in wet well; new
overhead lifting system in wet well; replacement ventilation fans and
ductwork in wet well and dry pit; new raceways/conductors/circuits;
and other related work.
a. Question – Is there any work specified to the Pump Station
building exterior?
i. Stantec noted that the exterior wood siding and fascia
is specified to be painted. In addition the plans note
that the wall penetrations of the Ventilation Fans in the
wet well may need to shift laterally after installation of
the new steel picking beam. The adjustment in fan
location may require brick façade and masonry wall
repairs.
ii. City is FLYGT Standardized – No substitutions for Pumps, VFD’s, controls, and
Mixer specified. Grinder shall be one of three models specified.
iii. Contract Times: Substantial – 150 days, Final 180 days.
iv. Maintenance of Sewage Flow
1. Bypass pumping operation critically important.
2. See Section 015069. Submit plan and system design for
review/approval.
3. Coordination of contracts essential. Timing of forcemain cut-in
connection under 2016-04 must be coordinated. Bypass hydrant
cannot be used during forcemain cut-in connection, which means
bypass flow must originate from within the station.
a. Stantec noted that via addendum, a Valve with blind flange
would be added to the plans to isolate piping inside the
station during bypass pumping operations. Currently only a
blind flange is called for on the plans.
b. Question – Is any underground piping work outside the station
specified for bypass pumping operations?
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March 22, 2016
PRE-BID MEETING
IFB 2016-03 Adams Street Pump Station Mechanical Upgrades
IFB 2016-04 Adams Street Pump Station Sewer and Forcemain Upgrades
Page 3 of 6
i. Stantec noted that no underground work or piping
modifications were expected outside the pump station.
Valve will be added inside the station to isolate station
from bypass operations.
4. Old and new forcemains head in different directions. Isolation valves
in street. Gate Valve and blind flange necessary inside station for
bypass pumping.
5. Expect wide variation in flows, bypass system must be able to
accommodate.
6. Noise mitigation and temporary enclosure, MPT/Detour plan.
a. Question – Is MPT/Detour responsibility of 2016-03 Pump Station
contract or 2016-04Sewer/Forcemain contract?
i. Dave Hansen noted the MPT/Detour for Adams Street
Pump Station bypass pumping is responsibility of 201603 contract.
v. Wet Well – Hazardous Class 1 Division 1, Group D per NEC.
1. Stantec noted all equipment and work shall be in the wet well space
shall be in accordance with applicable codes including boxes,
switches, equipment, sealing fittings, etc. rated for use in such
environment.
vi. Systems Demonstration
1. Section 017900.
2. 120 hour system test and demonstration.
3. Level Sensing system and alarms.
4. HVAC equipment testing and demonstration.
vii. Addendum forthcoming with edits to Pumps and Equipment Section 221329.
Regarding control details and level sensing for mixer at minimum.
c. Sewer and Forcemain Contract 2016-04
i. General Scope of Work
1. 1,050 LF of new 8” HDPE forcemain extension; removal/abatement of
140 LF of existing 8” Asbestos Cement gravity sewer; and 320 LF of 8”
PVC gravity sewer main; and other related work including restoration.
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March 22, 2016
PRE-BID MEETING
IFB 2016-03 Adams Street Pump Station Mechanical Upgrades
IFB 2016-04 Adams Street Pump Station Sewer and Forcemain Upgrades
Page 4 of 6
2. Forcemain construction along Crescent Avenue from U.S. Route 9 to
Reservation Drive. Asbestos Cement pipe removal/abatement and
Gravity Sewer repairs are located on Adams Street, and intersections
of Nelson/Gridley Streets and Nelson/Crescent Streets.
a. Question – How are gravity repair locations specified on the
plans?
i. Stantec noted that repair locations vary; some
originate from a manhole and extend a specified
distance, Adams Street repair is mid-line and specified
via a dimension from the manhole and stationing along
the pipeline.
b. Question – Are any laterals or connections anticipated? What
is the extent of lateral repair required?
i. Stantec noted that some lateral reconnections are
anticipated and specified on the plans. See also
Appendix A of the IFB manual for “Green Mountain”
sewer inspection report for information. The extent of
reconnection is at the main. Further replacement is not
specified unless condition in the field dictates that it is
required, upon which a field order or change order
would be negotiated.
3. All work shall be in conformance with NYSDOT, Saratoga County
Public Works (Highway), Saratoga County Sewer District, and City of
Saratoga Springs standards and requirements. Contractor shall be
responsible to secure all required permits and pay/provide all fees,
bonds and insurance necessary to satisfy all permits/requirements.
a. Permits – responsibility of Contractor
i. Crescent Avenue - County road.
ii. Work on Crescent Avenue at intersection of U.S. Route
9 may require DOT highway work permit.
iii. City Streets – Street Opening permit required from DPW.
b. Stantec noted that permit requirements for the County and
NYSDOT will be verified and information issued via addendum.
ii. Contract Times: Substantial on or before July 8th, Final on or before July 20th.
Absolutely no work during track season July 22nd through September 5th.
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March 22, 2016
PRE-BID MEETING
IFB 2016-03 Adams Street Pump Station Mechanical Upgrades
IFB 2016-04 Adams Street Pump Station Sewer and Forcemain Upgrades
Page 5 of 6
iii. Forcemain work takes precedence over gravity sewer repairs, forcemain
extension is necessary to facilitate new pumps.
iv. Maintenance of Sewage Flow
1. See Section 015069. Submit plans and system designs for
review/approval.
2. Coordination of contracts essential. Timing of forcemain cut-in
connection must be coordinated with Pump Station work. Bypass
hydrant cannot be used during forcemain cut-in connection, which
means bypass flow must originate from within the station.
3. Bypass pumping of Adams Street pump station responsibility of
contract 2016-03. Bypass pumping systems for Doten and Furlong
stations and gravity sewer repairs are responsibility of this 2016-04
contract.
v. Asbestos Abatement
1. Green Mountain report in Appendix A identified gravity sewer piping
as Asbestos Cement.
2. All sampling, survey, abatement work plan, removal, disposal,
documentation, observation, reporting, etc. is the complete
responsibility of contractor.
3. Submit sampling/analysis results and work plan for review and
approval prior to starting work.
The pump station building was opened and contractors were permitted to view the work area.
The foregoing is considered to be a true and accurate record of all items discussed. If any
discrepancies or inconsistencies are noted, please contact the writer immediately.
Stantec Consulting Services Inc.
David J. Hansen, P.E.
Project Manager
Phone: 518-218-5813
Fax: 518-452-9234
dave.hansen@stantec.com
Attachment:
Bidder Sign-In Sheet
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March 22, 2016
PRE-BID MEETING
IFB 2016-03 Adams Street Pump Station Mechanical Upgrades
IFB 2016-04 Adams Street Pump Station Sewer and Forcemain Upgrades
Page 6 of 6
c. Stefanie Richards, City of Saratoga
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CONTRACT 2016-03
Stantec Consulting Services, Inc.
City of Saratoga Springs, New York
Adams Street Pumping Station Mechanical Upgrades
SECTION 221329 - SANITARY SEWERAGE PUMPS & EQUIPMENT
PART 1 - GENERAL
1.1
RELATED DOCUMENTS
A.
1.2
Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections, apply to this Section.
SUMMARY
A.
This Section includes the following sewage pumps, equipment and accessories:
1.
2.
3.
4.
5.
B.
Related Sections include the following:
1.
2.
3.
4.
1.3
Dry pit mounted Sewage pumps, VFD’s, Pressure Transducers, and control panel.
Pump mounting stands, anchoring and mounting mechanisms, brackets and hardware.
New Piping, valves and appurtenances and other accessories as specified herein.
Submersible sewage mixer and control panel.
Sewage Grinder and control panel.
Division 22 Section "Gauges for Piping".
Division 22 Section “Stainless Steel Stop Gates”.
Division 22 Section “Check Valves”.
Division 22 Section "Gate Valves".
SUBMITTALS
A.
Certifications
1.
2.
B.
Submit a letter certifying the manufacturer, product designation, and specification data of
all shop paints to be used for equipment under this Section.
Submit testing certifications as specified elsewhere, including Certification of Accuracy
of magnetic flow meter.
Shop Drawings and Product Data
1.
In compliance with Section 013330, submit shop drawings of all pumps, grinders, mixers,
drivers, valves, piping, and other equipment required for the pumping system. All
components of each pumping system shall be submitted together. Shop drawings shall
include the following features:
a.
b.
c.
d.
Manufacturer's specification data and descriptive literature.
Data on power factor correction capacitors, as applicable, including corrected
power factor at 25%, 50% and 100% load.
Complete data on motor thermal protection.
Data on motor heaters, including voltage, wattage and other pertinent information.
SANITARY SEWERAGE PUMPS & EQUIPMENT
221329 - 1
CONTRACT 2016-03
Stantec Consulting Services, Inc.
e.
f.
g.
h.
i.
j.
k.
l.
m.
n.
2.
C.
Performance curves showing capacity of gpm, NPSH, head, and pump horsepower
from 0 gpm to 110% of design capacity.
Motor efficiencies and power factors at all system operating points as listed for
each pumping system's characteristics.
The following data shall be submitted for each motor:
1)
Manufacturer's designation
2)
Number of phases
3)
Horsepower output
4)
Voltage
5)
Time rating
6)
Load amperes at 1/2, 3/4, and full load
7)
Temperature rise
8)
Design letter
9)
RPM at full load
10) Service factor
11) Frequency
12) Code Letter
Supply standard FLYGT performance test results.
Manufacturer's recommended procedures for job site storage, handling,
installation, and start-up.
Detailed layout of equipment, piping, controls etc., whenever the Drawings are
diagrammatic in nature or the equipment to be provided differs from that indicated
on the Drawings.
Anchor bolt layouts and details, support and bracket details, and other drawings
required for proper installation.
Procedures for proper installation.
Manufacturer's warranty and guarantee.
Information about the nature and location of parts, service crews, and repair
facilities.
Shop drawing submittals shall be complete in one submittal. Individual manufacturer
submittals for portions of the systems will not be accepted for review.
Operation and Maintenance Manuals
1.
D.
City of Saratoga Springs, New York
Adams Street Pumping Station Mechanical Upgrades
Submit four (4) sets of operation and maintenance manuals in accordance with Section
017823. The submittal shall include the following:
a.
Operation and maintenance instruction bulletins for each equipment item.
b.
Complete parts list.
c.
Schematic and physical wiring diagrams.
Special Tools and Spare Parts
1.
Provide to OWNER one set of special tools, calibration devices, or instruments required
for operation, calibration, and maintenance of the equipment. It is the intent of this
Specification to provide only one set of tools required for this equipment and similar
equipment specified elsewhere.
2.
Spare parts specific and respective to equipment is specified below in Part 2 – Products.
SANITARY SEWERAGE PUMPS & EQUIPMENT
221329 - 2
CONTRACT 2016-03
Stantec Consulting Services, Inc.
1.4
City of Saratoga Springs, New York
Adams Street Pumping Station Mechanical Upgrades
QUALITY ASSURANCE
A.
System Responsibility
1.
B.
The Contract Documents are intended to describe all details of a complete equipment
installation for the purpose specified. However, the Contractor shall be responsible for all
details necessary to properly install, adjust, and place into operation a working system.
Pump Tests: The pump manufacturer shall perform the following inspections and tests on each
pump before shipment from the factory.
1.
2.
3.
4.
5.
Impeller, motor rating and electrical connections shall first be checked for compliance
with this specification.
A motor and cable insulation test for moisture content for insulation defects.
The pump shall be run for 30 minutes while submerged with sufficient head to simulate
actual field conditions.
After operational test as outlined in article 4 above, the insulation test as outlined in
article No. 2 above is to be performed again.
A written report stating the foregoing have been done, shall be supplied with each pump
at the time of shipment.
C.
All wiring shall be minimum 600 volt UL type MTW or AWM and shall have a current
carrying capacity of not less than 125% of full load current. All conductors shall conform with
the National Electric Code, state, local, and NEMA standards. All wiring shall be color coded in
strict accordance with the wiring diagrams furnished by the equipment supplier.
D.
Product Options: Drawings indicate size, profiles, and dimensional requirements of sewage
pumps, wall mounted submersible mixer and sewage grinder. Drawings to be based on the
specific system indicated.
1.5
DELIVERY, STORAGE, AND HANDLING
A.
Retain shipping flange protective covers and protective coatings during storage.
B.
Protect bearings and couplings against damage.
C.
Comply with equipment manufacturer's written rigging instructions for handling.
D.
All parts shipped to the job site shall be properly protected from rain and wind, so that no
damage or deterioration will occur during any prolonged delay from the time of delivery until
the installation is completed and the units are placed into operation.
1.6
WARRANTY
A.
The manufacturer of the equipment specified herein shall guarantee that the materials and/or the
workmanship of the equipment supplied be free of defects with a five (5) year prorated (0- 18
months 100% covered, 19-39 months 50% covered, 40-60 months 25% covered).
SANITARY SEWERAGE PUMPS & EQUIPMENT
221329 - 3
CONTRACT 2016-03
Stantec Consulting Services, Inc.
1.7
City of Saratoga Springs, New York
Adams Street Pumping Station Mechanical Upgrades
MANUFACTURER'S SERVICES
A.
The manufacturer shall provide to OWNER two (2) working days of start-up services for all
pump system equipment, in one trip. During the trip, a factory trained service person
representing the manufacturer shall inspect the Contractor's completed installation and provide
guidance during start-up of the unit. The factory-trained service person shall also provide to
OWNER'S personnel initial operating instructions in conjunction with the mechanical start-up
services.
B.
After all pumps have been completely installed and wired, the contractor shall have the
manufacturer do the following:
1.
2.
3.
4.
5.
6.
Megger stator and power cables
Check seal lubrication
Check for proper rotation
Check power supply voltage
Measure motor operating load and no load current
Check level control operation and sequence.
1.8
The Contractor shall advise OWNER'S personnel and ENGINEER at least three (3) working
days in advance of the date of any start-up services. Failure to provide such notice may result in
rejection and re-scheduling of such services by ENGINEER or OWNER. Operation testing of
all pumps, drivers, motors and control systems must be conducted in the presence of the
Engineer.
1.9
COORDINATION
A.
Coordinate size and location of concrete bases, mounting assemblies, brackets and related
materials.
PART 2 - PRODUCTS
2.1
WET WELL SUBMERSIBLE SEWAGE MIXER
A.
Acceptable manufacturer and model:
1.
The submersible sewage mixer and motor specified herein shall each be one of the
following listed as follows:
a.
b.
B.
FLYGT Model SR-4610
No substitutions.
Scope:
1.
Furnish and install one (1) submersible mixer. Each mixer shall be equipped with a 1.2
HP, LSPM (line-started permanent-magnet) submersible electric motor connected for
operation on 208 Volts, 3 Phase, 60 Hertz, 3 wire service, with 50 Ft. of submersible
SANITARY SEWERAGE PUMPS & EQUIPMENT
221329 - 4
CONTRACT 2016-03
Stantec Consulting Services, Inc.
City of Saratoga Springs, New York
Adams Street Pumping Station Mechanical Upgrades
SUBCAB cable. All cables shall be oil resistant chlorinated polyethylene rubber jacketed.
Each unit shall be fitted with 40 feet of lifting cable of adequate strength to permit raising
and lowering the mixer. Mixers specified herein shall have propeller code 042107SF and
be capable of a nominal thrust of 135 N with a propeller speed 1740 rpm and propeller
diameter 8-9/32 in. and a shaft horsepower not to exceed 1.19 BHP in clear water. The
mixer shall draw 7.5 Amps maximum when operating at the specified BHP. Total input
power shall not exceed 0.91 kW. The mixer shall be designed for continuous duty in
handling mixed media of a maximum temperature of 104 degrees F.
C.
Manufacturer requirements:
1.
D.
Mixer design:
1.
E.
The mixer(s) shall be capable of handling raw, screened sewage. The mixer(s) shall be
able, with the exception for floor-mounted mixers, to be raised and lowered and shall be
easily removed for inspection or service without the need for personnel to enter the
mixing vessel. The mixer shall be mounted on a square guide bar system or on a fixed
floor mount. A sliding guide bracket shall be an integral part of the mixer unit. The entire
weight of the mixer unit shall be guided by a single bracket which must be able to handle
all thrust created by the mixer. The standard mixer, with its appurtenances and cable,
shall be capable of continuous submergence under water, without loss of watertight
integrity, to a depth of 130 ft. FM approved mixers have a depth limit of 57 ft.
Mixer construction:
1.
F.
The mixing equipment specified herein shall be the design and fabrication of a single
manufacturer which shall have sole source responsibility for said equipment. The
manufacturer shall have mixing equipment of this principal design and of comparable
capacity in successful operation in the field for a minimum period of 10 years.
Each mixer shall be of the integral design, close coupled, submersible type. All
components of the mixer, including motor, shall be capable of continuous underwater
operation. Major mixer components shall be of 316L Stainless Steel construction. The oil
housing cover plate shall be of corrosion resistant composite (4610/20 utilize a vinyl ester
composite motor cover). All exposed fasteners shall be of stainless steel. In order to
insure that the low velocity area around the motor remains impervious to low PH solids
and or liquid attack, the motor housing exterior shall be made of 316 Stainless Steel. All
metal surfaces coming into contact with the mixed media, other than stainless steel, shall
be protected by a factory applied spray coating of acrylic dispersion zinc phosphate
primer with an epoxy finish coat on the exterior of the mixer.
Motor (Explosion Proof):
1.
The motor shall be directly connected to the propeller (gearbox designs are not
acceptable) to produce a propeller speed of 1740RPM. The mixer motor shall be squirrel
cage, induction, shell type design, housed in an air filled, watertight chamber. The stator
winding shall be insulated with moisture resistant Class F insulation which will resist a
temperature of 155°C (311°F). The stator shall be insulated by the trickle impregnation
method resulting in a winding fill factor of at least 95%. The motor shall be designed for
continuous duty, capable of sustaining a maximum of at least thirty (30) evenly spaced
starts per hour. The rotor bars and short circuit rings shall be made of aluminum.
SANITARY SEWERAGE PUMPS & EQUIPMENT
221329 - 5
CONTRACT 2016-03
Stantec Consulting Services, Inc.
2.
G.
The mixer assembly shall incorporate a jet ring a full 360 degrees around the propeller.
Cable entry:
1.
K.
The propeller shall be of 316 stainless steel dynamically balanced, non-clogging
backward curved design. Each blade shall be laser cut and welded to the hub to ensure
that the propeller is properly balanced. The propeller shall be capable of handling solids,
fibrous materials, heavy sludge and other matter found in normal sewage applications.
The propeller shall have either two or three vanes 8-9/32 inches in diameter with a blade
angle of 7 degrees.
Jet Ring Assembly:
1.
J.
All mating surfaces where watertight sealing is required shall be machined and fitted with
a double set of Nitrile rubber or Viton O-rings. Fitting shall be such that sealing is
accomplished by metal-to-metal contact between machined surfaces. This will result in
controlled compression of the O-rings without requiring a specific torque limit. No
secondary sealing compounds, rectangular gaskets, elliptical O-rings, grease or other
devices shall be used.
Propeller:
1.
I.
Thermal sensors shall be used to monitor stator temperatures. The stator shall be
equipped with three (3) thermal switches embedded in the end coils of the stator winding
and set for 284°F (140°C). These shall be used in conjunction with, and supplemental to,
external motor overload protection, and must be wired to the control panel as required by
FM regulations. In addition, FM regulations require that a leakage detector be installed
in the motor and connected through a Mini-CAS unit.
Elastomers:
1.
H.
City of Saratoga Springs, New York
Adams Street Pumping Station Mechanical Upgrades
The cable entry housing shall be an integral part of the back plate. The cable entry shall
have a double set of elastomer grommets in order to ensure a redundant system in the
event of a cable entry failure. Single sealing systems will not be deemed acceptable. The
cable entry shall be comprised of two cylindrical elastomer grommets, each flanked by
washers and a ferrule designed with close tolerance fit against the cable outside diameter
and the entry inside diameter. This will provide a leak proof seal at the cable entrance
without the need for specific torque requirements. The assembly shall bear against a
shoulder in the stator casing opening and be compressed by a gland nut threaded into it.
Interaction between the gland nut and the ferrule should move the grommet along the
cable axially instead of with a rotary motion. The junction chamber and motor
compartment shall be separated by a terminal board which shall protect the motor interior
from foreign material gaining access into the mixer top. Connection shall be made
between the threaded compressed type binder posts thus securely affixing the cable wires
to the terminal board. The use of the terminal compressed type post and a terminal board
O-ring shall render the motor compartment leak proof from any liquid which may enter
the terminal compartment. Epoxies, silicones, or other secondary sealing systems shall
not be considered acceptable.
Bearings:
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CONTRACT 2016-03
Stantec Consulting Services, Inc.
1.
L.
The oil housing shall contain two compartments consisting of an inner and an outer
section with four ports to connect and facilitate oil flow. In the event that the mixed
media bypasses the other seal, this design will allow the outer compartment to collect the
heavier (denser) fluids by means of a simple gravity process. Mixers which require
propeller removal for oil change shall not be acceptable. Separate fill and drain plugs
shall be provided to facilitate oil replacement.
Mechanical seals
1.
2.
N.
All bearings shall have a minimum B-10 or L-10aa rated life of 100,000 hours and shall
have inner and outer races of metal construction. Bearings with races made of
nonmetallic construction will not be deemed acceptable or meeting the load handling and
environmental requirements of this application. The outboard propeller bearing shall be
an angular contact bearing. The motor shaft end shall be supported by two bearings. A
roller and an angular contact ball bearing shall take up the axial and radial loads while an
angular contact ball bearing shall take up the axial loads. The bearings shall be preloaded by a bearing loading nut located on the motor end of the shaft in order to reduce
shaft deflection and increase bearing life and seal life. Mixers without pre-loaded
bearings will not be considered acceptable or equal.
Oil housing:
1.
M.
City of Saratoga Springs, New York
Adams Street Pumping Station Mechanical Upgrades
Each mixer shall be provided with two sets of lapped end face type mechanical seals
running in oil reservoirs for cooling and lubrication.
The standard inner mechanical seal is corrosion resistant Tungsten Carbide/Aluminum
Oxide. The outer seal faces are Tungsten Carbide/Tungsten Carbide. One face of the
inner seal ring pair shall have spiral grooves laser etched in it, to provide a pumping
action to move leakage from the stator housing back into the oil chamber. In order to
avoid seal failure due to sticking, clogging, and misalignment from elements contained in
the mixed media, only the seal faces of the outer seal assembly and its retaining clips
shall be exposed to the mixed media. All other components shall be contained in the oil
housing.
Mixer mount assembly:
1.
2.
3.
4.
Stainless steel mixer wall mount assembly shall be supplied to mount the mixer during
operation and to guide the unit during installation and removal from service. The
assembly shall consist of upper, lower and, if required, intermediate mounting brackets
made of 316 stainless steel.
Each mixer mount assembly shall include a 40 ft. field adjustable length of 316 stainless
steel mixer support cable. A 2" x 2" x 3/16-inch wall thickness mast shall securely
interface with the mixer manufacturer’s upper, lower and intermediate brackets and
integrate in such a way as to securely support the mixer during operation
Overall installed length shall be field adjustable. All support bracket assemblies shall be
supplied by the mixer manufacturer only, to ensure the integrity of the system under
operational loads.
For mast heights up to 20 ft., the assembly shall also be provided with three cable holders
to secure the mixer electric power cable. For mast heights greater than 20 ft. additional
cable holders must be purchased from the mixer manufacturer. These cable holders shall
be installed on the power cable every 5 ft., to provide lateral support of the power cable.
In addition, a cable support grip shall be provided to hold the weight of the power cable.
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Stantec Consulting Services, Inc.
5.
O.
These grips and support are used to prevent the electric cable from becoming entangled in
the mixer propeller during operation.
The mixer shall have the capability of redirecting the center line of its jet +/-10 or +/- 20
degrees in a vertical plane and 120 degrees in a horizontal plane and can be repositioned
for operation at any elevation along the complete mast assembly. The mast shall be
constructed with a positioning locking plate which will work in conjunction with bolts
through the upper guide holder to positively lock the mast in place at various operating
angles. All the above shall be capable of being accomplished without draining the tank.
Mixer test:
1.
The mixer manufacturer shall perform the following inspections and tests on each mixer
before shipment from the factory:
a.
b.
c.
2.
P.
2.
A written report stating the foregoing steps have been done may be supplied with each
mixer at the time of shipment (upon request).
In addition to the requirements listed above, for the installations which are considered to
be in hazardous locations as defined by the National Electrical Code (NEC), only mixers
certified by Factory Mutual for use in such locations shall be used.
Specifically, the mixers used shall be certified for use in all Class I, Divisions 1 and 2,
Groups C and D, Class II, Divisions 1 and 2, Groups E, and G and Class III locations as
outlined in Articles 500-502 inclusive of the NEC code.
Spare Parts:
1.
R.
Propeller, motor rating, and electrical connections shall first be checked for
compliance to the customer's purchase order.
A dielectric test shall be carried out in accordance to IEC 60034-1 (two times rated
voltage plus 1000 V). This test shall be done after assembly but before any
performance tests. No records shall normally be provided.
Prior to shipment, the mixer shall be run dry to establish correct rotation and
mechanical integrity.
Hazardous location equipment:
1.
Q.
City of Saratoga Springs, New York
Adams Street Pumping Station Mechanical Upgrades
Manufacturer recommended spare parts shall be provided including at a minimum;
FLYGT Basic Repair Kit including O-rings, upper and lower bearings and mechanical
seal; and spare breakers and fuses for control panel.
Mixer control panel:
1.
2.
3.
The system shall be factory assembled, wired, tested and covered by complete electrical
drawings and instructions.
Acceptable manufacturers: To be provided by FLYGT local supplier.
The control panel for the pump station shall be furnished by the mixer supplier and shall
be housed in a wall mounted, gasketed, watertight NEMA 4X, 14 gauge, Type 304
stainless steel enclosure with internally mounted hinges, a dead front outer door, drip cap,
inner door, and lock hasp on the outer door. The control panel shall be constructed in
compliance with Underwriter's Laboratories Industrial Control Panels listing. The control
panel shall bear the UL listed serialized label. Fiberglass or painted steel enclosures are
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CONTRACT 2016-03
Stantec Consulting Services, Inc.
City of Saratoga Springs, New York
Adams Street Pumping Station Mechanical Upgrades
not equivalent. Control panel shall be sized to house the mixer system and ancillary
devices as specified herein. Panel shall have:
a.
b.
c.
d.
e.
f.
g.
4.
Seams shall be continuously welded and ground smooth with no knockouts.
Door and body stiffeners for extra rigidity.
Captivated door screws threaded into sealed wells.
Hoffman or equal standard hinges.
Removable and reversible print holding pocket.
All conduits, fittings and connections shall enter the enclosure through the bottom
only.
Adequate ventilation, including fans, filters, and operator light shall be supplied
and sized for the range of ambient temperatures and the heat load of the enclosed
components.
The panel shall be sized to contain the items specified herein. Provide the following items
inside the panel (except as noted herein):
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
l.
m.
n.
o.
p.
q.
r.
Main circuit breaker with thru the door operating handle;
NEMA motor starter;
Phase Sequence Monitor/Relay, Diversified Electronics' SLA Series or equivalent.
Said relay shall protect the mixer motor from phase loss, under voltage, and/or
phase reversal. The relay shall be capable of monitoring both Delta and Wye
systems. The unit shall be surface mounted in the panel, with #8 screw terminals.
The units shall be adjustable via a screwdriver. Provide LED indicators that glow
when all line conditions are normal;
Control power circuit breaker;
H-O-A selector switch;
Pushbutton MiniCas reset;
Separate indicating lights for power on, pumps running, thermal, and moisture
failures, each push-to-test type;
Elapsed time meter indicating total run time per pump in hours and tenths of hours;
Lightning arrestor provided in the control and connected to each line of the
incoming side of the power-input terminals. The arrestor shall protect the controls
against damage due to the incoming power line;
Space heater sized as needed to prevent condensation build-up, operating on 120
Volts. Heater shall have a high temperature cutout thermoswitch.
120 VAC control circuit dry type transformer, with a properly sized primary circuit
breaker;
Control relays;
One (1) FLYGT MiniCas module;
Time delay relays;
Time clock for automatic operation;
Selector switch for mixer lockout;
Exterior alarm light with steel protection grid and weatherproof, high impact
resistant lexan lens, mounted on the top the control panel to provide visual
alarming of actuation of any of the following: Any "moisture" alarm signal, or
“thermal" alarm signal as described above. The alarm light bulb shall be
replaceable from inside the control panel without having to remove the lens from
the panel. A solid state flasher shall be included to strobe the alarm light during
any specified alarm condition;
Alarm light reset pushbutton inside the panel;
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City of Saratoga Springs, New York
Adams Street Pumping Station Mechanical Upgrades
CONTRACT 2016-03
Stantec Consulting Services, Inc.
s.
t.
Alarm horn and silencing circuit;
Provide normally-open auxiliary contacts and panel-mounted indicating lights (red
unless otherwise indicated) for the following conditions:
1)
2)
3)
u.
v.
w.
5.
Grounding bar;
Power and control terminal blocks;
UL 508A label.
Alarms:
a.
b.
Provide the circuitry required to lock out failed mixer, and to initiate the failed
mixer’s alarm contact upon failure. Motor high temperature shall constitute mixer
failure and shall lock out the mixer and alarm the condition. Seal failure shall
initiate an alarm only.
Each alarm condition shall operate an individual separate set of DPDT contacts.
Each alarm condition shall also light a separate pilot light (with nameplate) on the
Control Panel's inner cover. Contractor shall disconnect alarms a through d listed
below if so directed by OWNER. Alarm conditions are as follows:
1)
2)
3)
c.
Mixer seal (moisture) failure
Mixer motor high temperature (thermal) failure
Include provisions in the control panel to transmit these signals to the pump
station telemetry equipment in dry well.
Upon an alarm conditions, the alarm point shall cause the following actions:
1)
2)
3)
2.2
Mixer fail
Mixer motor starter auxiliary run contact (green indicating light)
Station loss of phase or commercial power (from power fail relay)
a)
Normally open contact that closes on loss of power
Activation of the alarm's specific red light on the interior of the panel and
general exterior red alarm light - and relays sufficient to transmit alarm
condition(s) to the existing “Mahoney” telemetry system: "Mixer Failure".
If the alarm condition is removed, pressing the reset pushbutton shall
extinguish the interior alarm light. If the alarm condition remains, the
outputs shall remain activated.
Removal of the alarm condition shall permit the pumps to operate. The
alarm pilot light shall remain lighted until the reset button is pushed.
SEWAGE GRINDER
A.
Acceptable manufacturers:
1.
The sewage grinder and motor specified herein shall be one of the following listed as
follows:
a.
b.
c.
JWC Environmental.
Moyno.
Franklin Miller.
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Stantec Consulting Services, Inc.
d.
City of Saratoga Springs, New York
Adams Street Pumping Station Mechanical Upgrades
No substitutions.
B.
Description: Open channel configuration, heavy duty, sewage grinder: JWC Model 30005-18
with 5 HP motor; Moyno Annihilator model M18 with 5 HP motor; Franklin Miller TM8516
with 5 HP motor.
C.
All equipment including motors, electrical power cords, control wiring, conduits, connectors,
junction boxes (if required) and appurtenances shall comply with the National Electric Code
requirements for Class 1, Division 1, Group D locations.
D.
Grinder arrangement: Simplex.
1.
E.
Complete with factory supplied mounting system for open channel configuration.
Grinder control panel:
1.
2.
3.
The system shall be factory assembled, wired, tested and covered by complete electrical
drawings and instructions.
Acceptable manufacturers: Clinton Controls, Inc.; USEMCO; TLC Controls, Inc.;
STACON; or equivalent.
The control panel for the sewage grinder shall be furnished by the grinder supplier and
shall be housed in a wall mounted, gasketed, watertight NEMA 4X, 14 gauge, Type 304
stainless steel enclosure with internally mounted hinges, a dead front outer door, drip cap,
inner door, and lock hasp on the outer door. The control panel shall be constructed in
compliance with Underwriter's Laboratories Industrial Control Panels listing. The control
panel shall bear the UL listed serialized label. Fiberglass or painted steel enclosures are
not equivalent. Control panel shall be sized to house the grinder system and ancillary
devices as specified herein. Panel shall have:
a.
b.
c.
d.
e.
f.
g.
4.
Seams shall be continuously welded and ground smooth with no knockouts.
Door and body stiffeners for extra rigidity.
Captivated door screws threaded into sealed wells.
Hoffman or equal, standard hinges.
Removable and reversible print holding pocket.
All conduits, fittings and connections shall enter the enclosure through the bottom
only.
Adequate ventilation, including fans, filters, and operator light shall be supplied
and sized for the range of ambient temperatures and the heat load of the enclosed
components.
The panel shall be sized to contain the items specified herein. Provide the following items
inside the panel (except as noted herein):
a.
b.
c.
Main circuit breaker with thru the door operating handle;
NEMA motor starter;
Phase Sequence Monitor/Relay, Diversified Electronics' SLA Series or equivalent.
Said relay shall protect the mixer motor from phase loss, under voltage, and/or
phase reversal. The relay shall be capable of monitoring both Delta and Wye
systems. The unit shall be surface mounted in the panel, with #8 screw terminals.
The units shall be adjustable via a screwdriver. Provide LED indicators that glow
when all line conditions are normal;
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Adams Street Pumping Station Mechanical Upgrades
CONTRACT 2016-03
Stantec Consulting Services, Inc.
d.
e.
f.
g.
h.
i.
j.
k.
l.
m.
n.
o.
p.
q.
r.
Control power circuit breaker;
H-O-A selector switch;
Pushbutton MiniCas reset;
Separate indicating lights for power on, grinder running, thermal, and moisture
failures, each push-to-test type;
Elapsed time meter indicating total run time per pump in hours and tenths of hours;
Lightning arrestor provided in the control and connected to each line of the
incoming side of the power-input terminals. The arrestor shall protect the controls
against damage due to the incoming power line;
Space heater sized as needed to prevent condensation build-up, operating on 120
Volts. Heater shall have a high temperature cutout thermoswitch.
120 VAC control circuit dry type transformer, with a properly sized primary circuit
breaker;
Control relays;
Time clock for automatic operation;
Selector switch for grinder lockout;
Exterior alarm light with steel protection grid and weatherproof, high impact
resistant lexan lens, mounted on the top the control panel to provide visual
alarming of actuation of any of the following: Any "moisture" alarm signal, or
“thermal" alarm signal as described above. The alarm light bulb shall be
replaceable from inside the control panel without having to remove the lens from
the panel. A solid state flasher shall be included to strobe the alarm light during
any specified alarm condition;
Alarm light reset pushbutton inside the panel;
Alarm horn and silencing circuit;
Provide normally-open auxiliary contacts and panel-mounted indicating lights (red
unless otherwise indicated) for the following conditions:
1)
2)
3)
4)
s.
t.
u.
5.
Grinder fail
Grinder motor starter auxiliary run contact (green indicating light)
Station loss of phase or commercial power (from power fail relay)
a)
Normally open contact that closes on loss of power
Include provisions in the control panel to transmit these signals to the pump
station telemetry equipment in dry well.
Grounding bar;
Power and control terminal blocks;
UL 508A label.
Alarms:
a.
b.
Provide the circuitry required to lock out failed grinder, and to initiate the failed
grinder’s alarm contact upon failure. Motor high temperature shall constitute
grinder failure and shall lock out the grinder and alarm the condition. Seal failure
shall initiate an alarm only.
Each alarm condition shall operate an individual separate set of DPDT contacts.
Each alarm condition shall also light a separate pilot light (with nameplate) on the
Control Panel's inner cover. Contractor shall disconnect alarms listed below if so
directed by OWNER. Alarm conditions are as follows:
1)
Grinder seal (moisture) failure
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CONTRACT 2016-03
Stantec Consulting Services, Inc.
2)
c.
Upon an alarm condition(s), the alarm point shall cause the following actions:
1)
2)
3)
F.
Activation of the alarm's specific red light on the interior of the panel and
general exterior red alarm light - and relays sufficient to transmit alarm
condition(s) to the existing “Mahoney” telemetry system: "Grinder Failure".
If the alarm condition is removed, pressing the reset pushbutton shall
extinguish the interior alarm light. If the alarm condition remains, the
outputs shall remain activated.
Removal of the alarm condition shall permit the pumps to operate. The
alarm pilot light shall remain lighted until the reset button is pushed.
Capacities and Characteristics:
1.
2.
3.
Number of sewage grinders: One (1)
Grinder Construction: Hardened Tool steel cutters and spacers, Silicon Carbide
Mechanical Seals, gear reduced, greased bearings.
Grinder:
a.
b.
Motor Horsepower: 5 HP –explosion proof motor
Electrical Characteristics:
1)
2)
3)
4.
2.3
Grinder motor high temperature (thermal) failure
Volts: 208.
Phases: Three.
Hertz: 60.
Manufacturer recommended spare parts shall be provided, including at a minimum; a
basic repair kit with O-rings, bearings and mechanical seals; spare cutters and spacers
(equal to 10% of quantity installed but no fewer than two of each size and type); and
spare breakers and fuses for the control panel.
SEWAGE PUMPS – SUBMERSIBLE RATED, DRY INSTALLATION
A.
Acceptable manufacturer and model:
1.
The submersible sewage pumps and motors specified herein shall each be one of the
following listed as follows:
a.
b.
B.
FLYGT Model N-3153.185/095
No substitutions. The City of Saratoga Springs has standardized on FLYGT pumps
and PumpSmart VFD’s, supplied by Emerick Associates, 1107 Loudon Road,
Cohoes, NY 12047, (800) 348-4860.
Requirements:
1.
Furnish and install two (2) submersible non-clog wastewater pumps. Each pump shall be
equipped with a 23 HP submersible electric motor, connected for operation on 208 volts,
3 phase, 60 hertz, 3 wire service, with 50 feet of submersible cable (SUBCAB) suitable
for submersible pump applications. The power cable shall be sized according to NEC
and ICEA standards and also meet with P-MSHA Approval.
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City of Saratoga Springs, New York
Adams Street Pumping Station Mechanical Upgrades
C.
Pump design configuration:
1.
Pump shall be capable of operating in a continuous non submerged condition in vertical
(NT) position in a dry pit installation, permanently connected to inlet and outlet pipes.
Pump shall be of submersible construction and will continue to operate satisfactorily
should the dry pit be subjected to flooding.
2.
NT configurations – Inlet elbow shall have an inspection cover (standard).
D.
Pump construction:
1.
Major pump components shall be of grey cast iron, ASTM A-48, Class 35B, with smooth
surfaces devoid of blow holes or other irregularities. The lifting handle shall be of
stainless steel. All exposed nuts or bolts shall be of stainless steel construction. All metal
surfaces coming into contact with the pumpage, other than stainless steel or brass, shall
be protected by a factory applied spray coating of acrylic dispersion zinc phosphate
primer with a polyester resin paint finish on the exterior of the pump.
2.
Sealing design shall incorporate metal-to-metal contact between machined surfaces.
Critical mating surfaces where watertight sealing is required shall be machined and fitted
with Nitrile O-rings. Fittings will be the result of controlled compression of rubber Orings in two planes and O-ring contact of four sides without the requirement of a specific
torque limit.
3.
Rectangular cross sectioned gaskets requiring specific torque limits to achieve
compression shall not be considered as adequate or equal. No secondary sealing
compounds, elliptical O-rings, grease or other devices shall be used.
E.
Cooling system (cooling jacket equipped):
1.
Each unit shall be provided with an integral motor cooling system. A stainless steel motor
cooling jacket shall encircle the stator housing, providing for dissipation of motor heat
regardless of the type of pump installation. An impeller, integral to the cooling system
and driven by the pump shaft, shall provide the necessary circulation of the cooling liquid
through the jacket. The cooling liquid shall pass about the stator housing in the closed
loop system in turbulent flow providing for superior heat transfer. The cooling system
shall have one fill port and one drain port integral to the cooling jacket. The cooling
system shall provide for continuous pump operation in liquid or ambient temperatures of
up to 104°F (40°C). Operational restrictions at temperatures below 104°F are not
acceptable. Fans, blowers or auxiliary cooling systems that are mounted external to the
pump motor are not acceptable.
F.
Cable entry seal:
1.
The cable entry seal design shall preclude specific torque requirements to insure a
watertight and submersible seal. The cable entry shall consist of dual cylindrical
elastomer grommets, flanked by washers, all having a close tolerance fit against the cable
outside diameter and the entry inside diameter. The grommets shall be compressed by the
cable entry unit, thus providing a strain relief function. The assembly shall provide ease
of changing the cable when necessary using the same entry seal. The cable entry junction
chamber and motor shall be sealed from each other, which shall isolate the stator housing
from foreign material gaining access through the pump top. Epoxies, silicones, or other
secondary sealing systems shall not be considered equal.
G.
Motor:
1.
The pump motor shall be a NEMA B design, induction type with a squirrel cage rotor,
shell type design, housed in an air filled, watertight chamber. The stator windings shall be
insulated with moisture resistant Class H insulation rated for 180°C (356°F). The stator
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CONTRACT 2016-03
Stantec Consulting Services, Inc.
2.
3.
4.
City of Saratoga Springs, New York
Adams Street Pumping Station Mechanical Upgrades
shall be insulated by the trickle impregnation method using Class H monomer-free
polyester resin resulting in a winding fill factor of at least 95%. The motor shall be
inverter duty rated in accordance with NEMA MG1, Part 31.The stator shall be heatshrink fitted into the cast iron stator housing. The use of multiple step dip and bake-type
stator insulation process is not acceptable. The use of pins, bolts, screws or other
fastening devices used to locate or hold the stator and that penetrate the stator housing are
not acceptable. The motor shall be designed for continuous duty while handling pumped
media of up to 104°F. The motor shall be capable of no less than 30 evenly spaced starts
per hour. The rotor bars and short circuit rings shall be made of aluminum. Three thermal
switches shall be embedded in the stator end coils, one per phase winding, to monitor the
stator temperature. These thermal switches shall be used in conjunction with and
supplemental to external motor overload protection and shall be connected to the motor
control panel.
The junction chamber shall be sealed off from the stator housing and shall contain a
terminal board for connection of power and pilot sensor cables using threaded
compression type terminals. The use of wire nuts or crimp-type connectors is not
acceptable. The motor and the pump shall be produced by the same manufacturer.
The motor service factor (combined effect of voltage, frequency and specific gravity)
shall be 1.15. The motor shall have a voltage tolerance of +/- 10%. The motor shall be
designed for continuous operation in up to a 40°C ambient and shall have a NEMA Class
B maximum operating temperature rise of 80°C. A motor performance chart shall be
provided upon request exhibiting curves for motor torque, current, power factor,
input/output kW and efficiency. The chart shall also include data on motor starting and
no-load characteristics.
Motor horsepower shall be sufficient so that the pump is non-overloading throughout its
entire performance curve, from shut-off to run-out. The motor and cable shall be capable
of continuous submergence underwater without loss of watertight integrity to a depth of
65 feet or greater.
H.
Shielded Power Cable:
1.
The power cable shall be sized according to the NEC and ICEA standards and shall be of
sufficient length to reach the junction box without the need of any splices. The power
cable shall be of a shielded design in which an overall tinned copper shield is included
and each individual phase conductor is shielded with an aluminum coated foil wrap. The
outer jacket of the cable shall be oil resistant chlorinated polyethylene rubber. The cable
shall be capable of continuous submergence underwater without loss of watertight
integrity to a depth of 65 feet or greater.
I.
Bearings:
1.
The integral pump/motor shaft shall rotate on two bearings. The motor bearings shall be
sealed and permanently grease lubricated with high temperature grease. The upper motor
bearing shall be a two row angular contact ball bearing to handle radial loads. The lower
bearing shall be a two row angular contact ball bearing to handle the thrust and radial
forces. The minimum L10 bearing life shall be 50,000 hours at any usable portion of the
pump curve.
J.
Mechanical Seals:
1.
Each pump shall be provided with a positively driven dual, tandem mechanical shaft seal
system consisting of two seal sets, each having an independent spring. The lower primary
seal, located between the pump and seal chamber, shall contain one stationary and one
positively driven rotating corrosion and abrasion resistant tungsten-carbide ring. The
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CONTRACT 2016-03
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2.
3.
4.
5.
City of Saratoga Springs, New York
Adams Street Pumping Station Mechanical Upgrades
upper secondary seal, located between the seal chamber and the seal inspection chamber
shall be a leakage-free seal. The upper seal shall contain one stationary and one positively
driven rotating corrosion and abrasion resistant tungsten-carbide seal ring. The rotating
seal ring shall have small back-swept grooves laser inscribed upon its face to act as a
pump as it rotates, returning any fluid that should enter the dry motor chamber back into
the lubricant chamber. All seal rings shall be individual solid sintered rings. Each seal
interface shall be held in place by its own spring system. The seals shall not depend upon
direction of rotation for sealing. Mounting of the lower seal on the impeller hub is not
acceptable. Shaft seals without positively driven rotating members or conventional
double mechanical seals containing either a common single or double spring acting
between the upper and lower seal faces are not acceptable. The seal springs shall be
isolated from the pumped media to prevent materials from packing around them, limiting
their performance.
Each pump shall be provided with a lubricant chamber for the shaft sealing system. The
lubricant chamber shall be designed to prevent overfilling and shall provide capacity for
lubricant expansion. The seal lubricant chamber shall have one drain and one inspection
plug that are accessible from the exterior of the motor unit. The seal system shall not rely
upon the pumped media for lubrication.
The area about the exterior of the lower mechanical seal in the cast iron housing shall
have cast in an integral concentric spiral groove. This groove shall protect the seals by
causing abrasive particulate entering the seal cavity to be forced out away from the seal
due to centrifugal action.
A separate seal leakage chamber shall be provided so that any leakage that may occur
past the upper, secondary mechanical seal will be captured prior to entry into the motor
stator housing. Such seal leakage shall not contaminate the motor lower bearing. The
leakage chamber shall be equipped with a float type switch that will signal if the chamber
should reach 50% capacity.
Seal lubricant shall be non-hazardous.
K.
Pump shaft:
1.
The pump and motor shaft shall be a single piece unit. The pump shaft is an extension of
the motor shaft. Shafts using mechanical couplings shall not be acceptable. The shaft
shall be stainless steel – ASTM A479 S43100-T. Shaft sleeves will not be acceptable.
L.
Impeller:
1.
The impeller shall be of Hard-IronTM (ASTM A-532 (Alloy III A) 25% chrome cast
iron), dynamically balanced, semi-open, multi-vane, back swept, screw-shaped, non-clog
design. The impeller leading edges shall be mechanically self-cleaned automatically upon
each rotation as they pass across a spiral groove located on the volute suction. The
leading edges of the impeller shall be hardened to Rc 60 and shall be capable of handling
solids, fibrous materials, heavy sludge and other matter normally found in wastewater.
The screw shape of the impeller inlet shall provide an inducing effect for the handling of
up to 5% sludge and rag-laden wastewater. The impeller to volute clearance shall be
readily adjustable by the means of a single trim screw. The impeller shall be locked to the
shaft, held by an impeller bolt and shall be coated with alkyd resin primer.
M.
Volute / Suction cover:
1.
The pump volute shall be a single piece grey cast iron, ASTM A-48, Class 35B, nonconcentric design with smooth passages of sufficient size to pass any solids that may
enter the impeller. Minimum inlet and discharge size shall be as specified. The volute
shall have a replaceable suction cover insert ring in which are cast spiral-shaped, sharp-
SANITARY SEWERAGE PUMPS & EQUIPMENT
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edged groove(s). The spiral groove(s) shall provide trash release pathways and sharp
edge(s) across which each impeller vane leading edge shall cross during rotation so to
remain unobstructed. The insert ring shall be cast of Hard-IronTM (ASTM A-532 (Alloy
III A) 25% chrome cast iron) and provide effective sealing between the multi-vane semiopen impeller and the volute housing.
N.
Protection:
1.
Each pump motor stator shall incorporate three thermal switches, one per stator phase
winding and be connected in series, to monitor the temperature of the motor. Should the
thermal switches open, the motor shall stop and activate an alarm. A float switch shall be
installed in the seal leakage chamber and will activate if leakage into the chamber reaches
50% chamber capacity, signaling the need to schedule an inspection.
2.
The thermal switches and float switch shall be connected to a Mini CAS control and
status monitoring unit. The Mini CAS unit shall be designed to be mounted in the pump
control panel.
O.
Capacities and Characteristics:
1.
2.
3.
System Capacity: 450 GPM each pump when operating alone.
Number of Pumps: Two (2).
Each Pump:
a.
b.
c.
d.
e.
f.
Design Operating Point per pump: 450 GPM at 115 feet TDH
Solids Handling Capability sewage pump.
Speed: per FLYGT = 3510 rpm for NT 3153 SH3 pump
Discharge Pipe Size: transition to new 6-inch pipeline
Motor Horsepower: 23 HP
Electrical Characteristics:
1)
2)
3)
4.
5.
6.
Volts: 208.
Phases: Three.
Hertz: 60.
Alternator Control Required: Yes.
Guide-Rail Supports Required: No.
Spare Parts:
a.
Manufacturer recommended spare parts shall be provided including at a minimum;
FLYGT Basic Repair Kit including spring washer, retaining rings, O-rings, upper
and lower bearings and mechanical seals; spare impeller and wear plate; and spare
breakers and fuses for the control panel and VFD’s.
P.
Variable Frequency Drives: Three (3) PumpSmart PS200, A08098A08, 25HP, NEMA 12
enclosure, 208V wall mounted, with 800MP3 PumpSmart Connection kit.
Q.
Pump Control Panel (Controls two (2) new 23 HP pumps and one (1) existing 7.5 HP pump):
1.
2.
The system shall be factory assembled, wired, tested and covered by complete electrical
drawings and instructions.
Acceptable manufacturers: To be provided by FLYGT local supplier.
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3.
The control panel for the pump station shall be furnished by the pump supplier and shall
be housed in a wall mounted, NEMA 12, 14 gauge, Type 304 stainless steel enclosure
with internally mounted hinges, a dead front outer door, drip cap, inner door, and lock
hasp on the outer door. The control panel shall be constructed in compliance with
Underwriter's Laboratories Industrial Control Panels listing. The control panel shall bear
the UL listed serialized label. Fiberglass or painted steel enclosures are not equivalent.
Control panel shall be sized to house the pump system and ancillary devices as specified
herein. Panel shall have:
a.
b.
c.
d.
e.
f.
g.
4.
City of Saratoga Springs, New York
Adams Street Pumping Station Mechanical Upgrades
Seams shall be continuously welded and ground smooth with no knockouts.
Door and body stiffeners for extra rigidity.
Captivated door screws threaded into sealed wells.
Hoffman or equal, standard hinges.
Removable and reversible print holding pocket.
All conduits, fittings and connections shall enter the enclosure through the bottom
only.
Adequate ventilation, including fans, filters, and operator light shall be supplied
and sized for the range of ambient temperatures and the heat load of the enclosed
components.
The panel shall be sized to contain the items specified herein. Provide the following items
inside the panel (except as noted herein):
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
l.
m.
n.
o.
Three (3) H-O-A selector switches (one per pump);
Three (3) Control Relays specific to the sensor, one per pump for the "Seal Failure
Detection Probe (disconnect probe sensor if so directed by OWNER).
Three (3) green "Pump Run" lights (one per pump), push-to-test type.
Three (3) red "VFD failure" indicator lights (one per pump), push-to-test type.
Three (3) red “Transducer failure” indicator lights (one per transducer), push-totest type.
Three (3) interior red lights (one per pump), push-to-test type, mounted inside the
panel to provide visual alarming of the pump's "Seal Failure" alarm signal.
One (1) interior red light, push-to-test type, mounted inside the panel to provide
visual alarming of the pump station's "High Water Level" alarm signal.
Three (3) interior red lights (one per pump), push-to-test type, mounted inside the
panel to provide visual alarming of the pump's "Motor High Temperature" alarm
signal.
One (1) "Power on" amber indicating light, push-to-test type.
One (1) 120 VAC control circuit dry type transformer, with a properly sized
primary circuit breaker.
Three (3) elapsed time meters indicating total run time per pump in hours and
tenths of hours (one per pump).
One (1) time delay relay to prevent the pumps from starting simultaneously after a
power failure.
Three (3) control relays specific to sensor, one per pump, for the "Motor High
Temperature" Detection Probe. Motor high temperature alarming shall be
enabled whenever the pump is set to either HAND or AUTO.
One (1) Pushbutton MiniCas reset;
One (1) lightning arrestor provided in the control and connected to each line of the
incoming side of the power-input terminals. The arrestor shall protect the controls
against damage due to the incoming power line;
SANITARY SEWERAGE PUMPS & EQUIPMENT
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CONTRACT 2016-03
Stantec Consulting Services, Inc.
p.
q.
r.
s.
t.
u.
v.
5.
One (1) space heater sized as needed to prevent condensation build-up, operating
on 120 Volts. Heater shall have a high temperature cutout thermoswitch.
Three (3) FLYGT MiniCas modules;
One (1) Alarm horn and silencing circuit;
Provide normally-open auxiliary contacts and panel-mounted indicating lights (red
unless otherwise indicated) for the following conditions:
1)
Pump #1 fail
2)
Pump #2 fail
3)
Pump #3 fail
4)
Pump #1 motor starter auxiliary run contact (green indicating light)
5)
Pump #2 motor starter auxiliary run contact (green indicating light)
6)
Pump #3 motor starter auxiliary run contact (green indicating light
7)
Station loss of phase or commercial power (from power fail relay)
a)
Normally open contact that closes on loss of power
8)
VFD #1 fail (auxiliary contact only- no panel indicating light)
9)
VFD #2 fail (auxiliary contact only- no panel indicating light)
10) VFD #3 fail (auxiliary contact only- no panel indicating light)
11) VFD #1 run (auxiliary contact only- no panel indicating light)
12) VFD #2 run (auxiliary contact only- no panel indicating light)
13) VFD #3 run (auxiliary contact only- no panel indicating light)
14) Include provisions in the control panel to transmit these signals to the pump
station telemetry transmitter equipment.
Grounding bar;
Power and control terminal blocks;
UL 508A label.
Alarms:
a.
b.
Provide the circuitry required to lock out a failed pump, alternate to and lock in
(until manually reset) a second pump and third pump, and to initiate the failed
pump's alarm contact upon failure of a pump. Motor high temperature shall
constitute pump failure and shall lock out the pump and alarm the condition. Seal
failure shall initiate an alarm only.
Each alarm condition shall operate an individual separate set of DPDT contacts.
Each alarm condition shall also light a separate pilot light (with nameplate) on the
Control Panel's inner cover. Contractor shall disconnect alarms listed below if so
directed by OWNER. Alarm conditions are as follows:
1)
2)
3)
4)
5)
6)
7)
8)
9)
c.
Pump Number 1 Seal Failure
Pump Number 2 Seal Failure
Pump Number 3 Seal Failure
Pump Number 1 Motor High Temperature
Pump Number 2 Motor High Temperature
Pump Number 3 Motor High Temperature
VFD Number 1 Failure
VFD Number 2 Failure
VFD Number 3 Failure
Upon an alarm condition(s), the alarm point shall cause the following actions:
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1)
2)
3)
2.4
Activation of the alarm's specific red light on the interior of the panel and
alarm horn - and relays sufficient to transmit alarm condition(s) to the
existing “Mahoney” telemetry system: "Pump Failure".
If the alarm condition is removed, pressing the reset pushbutton shall
extinguish the interior alarm light. If the alarm condition remains, the
outputs shall remain activated.
Removal of the alarm condition shall permit the pumps to operate. The
alarm pilot light shall remain lighted until the reset button is pushed.
LIQUID LEVEL SENSING SYSTEM
A.
The supplier of the submersible sewage pumps shall also furnish and the Contractor shall install
a liquid level sensing system. The system shall consist of four (4) submersible and intrinsically
safe pressure transducers, each with 40 feet of cable.
1.
Three (3) transducers will each serve a separate pump.
2.
One (1) transducer will serve the submersible mixer.
B.
Transducer Requirements:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
C.
A low pressure transducer specifically designed for sewage wet well environments shall
be provided. The unit shall be fully temperature compensated and housed in a welded
stainless steel package, including internal signal conditioning. Transducer shall have a 05 psig pressure range, proof pressure of 1.5 times the rated pressure, and an operating
pressure of -10° C to 60° C.
Transducer shall generate a 4-20 mA DC signal proportional to the level range specified.
Each VFD controller shall receive one corresponding transducer signal input.
Make/Model: LevelRat; or approved equal
40 feet cable
Lightning protection.
16-bit internal digital error correction for cost-effective low Total Error Band (TEB)3
316L SS housing construction.
Non-fouling diaphragm for superior resistance to puncture.
User-rangeable analog output ensures compatibility as requirements change.
RS485 modified-MODBUS compatible interface allows up to 128 transmitters on a
single bus.
Standard dual (analog & RS485) outputs simplify interface to controls, data collection,
and telemetry systems.
The liquid level sensing system and the control system shall function to start and stop the pumps
based upon two different seasonal configurations as summarized below:
1.
Peak Flow “Summer - Track Season”
a.
Pump #1 (7.5 HP) manually set to “OFF” and manually exercised weekly.
b.
Pumps #2 and #3 (23 HP) alternate as Lead or Lag with each cycle at the following
water elevations:
1)
All pumps OFF
Wet Well Liquid Level = 2 feet
2)
Lead Pump ON
Wet Well Liquid Level = 4 feet
3)
Lag Pump ON
Wet Well Liquid Level = 5 feet
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CONTRACT 2016-03
Stantec Consulting Services, Inc.
4)
2.
D.
2.5
Wet Well Liquid Level = 6 feet
Low Flow “Fall, Winter, Spring Season”
a.
Pump #1 (7.5 HP) to operate as Lead Pump
b.
Pumps #2 and #3 (23 HP) to alternate as Lag Pump with each cycle:
c.
Pumps shall start and stop at the following water elevations:
d.
3.
High Water Level Alarm
1)
All pumps OFF
Wet Well Liquid Level = 2 feet
2)
Lead Pump ON
Wet Well Liquid Level = 4 feet
3)
Lag Pump ON
Wet Well Liquid Level = 5 feet
4)
High Water Level Alarm
Wet Well Liquid Level = 6 feet
If either of the 23 HP pumps is called to run, the 7.5 HP pump shall be locked out.
Control System water elevations shall be field adjusted during startup to optimize pump
run time efficiency.
The liquid level sensing system and the control system shall function to start and stop the
submersible mixer based upon the configuration summarized below:
1.
Field programmed for Mixer “ON” at defined wet well liquid level of 2.5 feet (prior to
pump on level), with additional programming for option of Mixer “ON” at separate times
controlled via Timer.
2.
Mixer “OFF” and locked out of operation while pumps are running.
CONTROL SYSTEM FUNCTIONAL DESCRIPTION
A.
The pump controller shall start and stop the pumps. Set points shall be determined by the
operator by adjusting the control panel dials to determine pump operating on and off levels. The
use of a programmable logic controller (PLC), other than that internal to the VFD's, to perform
any of the functions specified in this Section, including alarms is prohibited. An interlock shall
prevent more than one pump from starting simultaneously. An additional interlock shall prevent
more than two (2) pumps from operating under any condition, including hand mode.
B.
The controls shall function such that when the lead pump is called to start, based on the liquid
level sensed in the wet well, the variable frequency drive shall start the pump at a the set point
speed. The control system shall monitor the liquid level in the wet well. If the flow into the wet
well increases to the point where the lag pump set point has been set by the operator, the lag
pump would start. If both pumps running at full speed cannot keep pace with the influent flow,
the water level in the wet well will increase to the point of actuating the High Water Level
alarm setpoint. At that setpoint the control system shall actuate the High Water Level alarm as
stated above. If the influent flow into the wet well decreases sufficiently such that even at
minimum speed one pump's discharge rate results in the liquid level dropping down to the "Both
Pumps Off” setpoint, the control system shall automatically shut down the lead pump.
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City of Saratoga Springs, New York
Adams Street Pumping Station Mechanical Upgrades
PART 3 - EXECUTION
3.1
EXAMINATION
A.
3.2
Examine existing piping to verify actual locations of intake and discharge piping connections
before sewage pump installation.
CONCRETE
A.
Install concrete bases of dimensions indicated for pumps.
1.
2.
3.
4.
B.
3.3
Install dowel rods to connect concrete base to concrete floor as indicated and in
accordance with recommendations from equipment manufacturer.
For supported equipment, install epoxy-coated anchor bolts that extend through concrete
base and anchor into structural concrete floor.
Place and secure anchorage devices. Use setting drawings, templates, diagrams,
instructions, and directions furnished with items to be embedded.
Install anchor bolts to elevations required for proper attachment to supported equipment.
Cast-in-place concrete materials and placement requirements are specified in Division 03.
INSTALLATION
A.
The pumping equipment and appurtenances shall be furnished and installed in the position
shown on the Drawings in accordance with the manufacturer's guarantee requirements for
clearance, NPSH, lubrication, and other detailed operating requirements. All necessary piping,
conduit, valves, wall sleeves, concrete foundation, foundation bolts, grouting, pumps, drivers,
shafting, control panels, power supply, pipe connections, etc., shall be provided to ensure a
complete and satisfactory installation of pumping equipment.
B.
Install sewage pumps according to applicable requirements and as per manufacturer’s
installation recommendation and details.
C.
Install pumps and arrange to provide access for maintenance including removal of motors,
impellers, couplings, and accessories.
D.
Suspend wet-pit-mounted submersible sewage mixer from wall with wall mounting system.
1.
Anchor wall mounting system to wall in wet well as per equipment supplier details.
E.
Support piping so weight of piping is not supported by pumps.
F.
Suction piping shall slope to pump to eliminate voids or air pockets in piping.
3.4
FIELD TESTS
A.
Prior to acceptance, conduct an operational test of all pumps, drivers and controls systems in
accordance with the Hydraulic Institute Standards, latest edition, and Section 013330, under the
SANITARY SEWERAGE PUMPS & EQUIPMENT
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City of Saratoga Springs, New York
Adams Street Pumping Station Mechanical Upgrades
observation of the ENGINEER, to determine if the installed equipment meets the purpose and
intent of the Specifications.
B.
Contractor shall supply all water, for pump system testing. Sewage shall not be used for pump
system testing. Before being permitted by OWNER to divert raw sewage into the pump station,
the Contractor shall completely check and test the pumps and a control system to the point
ENGINEER is of the opinion that the work meets the intent of the Contract Documents.
C.
Provide the pump manufacturer's services for start-up of the pumps.
D.
Tests shall demonstrate that the equipment and work is not defective electrically, mechanically,
or otherwise, and is in a safe and satisfactory operation condition.
E.
Pumping tests shall be conducted in accordance with Specification Section 017900 - System
Demonstration. Tests shall demonstrate that the equipment and work is not defective
electrically, mechanically, or otherwise, and is in a safe and satisfactory operation condition.
F.
Prior to applying electrical power to any motor driven equipment, the drive train shall be rotated
by hand to demonstrate free operation of all mechanical parts.
G.
Tests shall include checks for excessive vibration, leaks in all piping and seals, correct operation
of control systems and equipment, and motor power input in kilowatts.
3.5
DEMONSTRATION
A.
In accordance with Division 01 Section “Systems Demonstration”.
END OF SECTION 221329
SANITARY SEWERAGE PUMPS & EQUIPMENT
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City of Saratoga Springs, New York
Adams Street Pumping Station Mechanical Upgrades
SECTION 262813 - FUSES
PART 1 - GENERAL
1.1
SUMMARY
A.
1.2
Section Includes: Cartridge fuses rated 600-V ac and less for use in control circuits, enclosed
switches, panelboards, switchboards, enclosed controllers and motor-control centers.
SUBMITTALS
A.
Product Data: For each type of product indicated.
B.
Operation and maintenance data.
1.3
QUALITY ASSURANCE
A.
Source Limitations: Obtain fuses, for use within a specific product or circuit, from single
source from single manufacturer.
B.
Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,
by a qualified testing agency, and marked for intended location and application.
C.
Comply with NEMA FU 1 for cartridge fuses.
1.4
PROJECT CONDITIONS
A.
1.5
Where ambient temperature to which fuses are directly exposed is less than 40 deg F (5 deg C)
or more than 100 deg F (38 deg C), apply manufacturer's ambient temperature adjustment
factors to fuse ratings.
COORDINATION
A.
1.6
Coordinate fuse ratings with utilization equipment nameplate limitations of maximum fuse size
and with system short-circuit current levels.
EXTRA MATERIALS
A.
Furnish extra materials that match products installed and that are packaged with protective
covering for storage and identified with labels describing contents.
1.
FUSES
Fuses: Equal to 10 percent of quantity installed for each size and type, but no fewer than
two of each size and type.
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CONTRACT 2016-03
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B.
City of Saratoga Springs, New York
Adams Street Pumping Station Mechanical Upgrades
Comply with NFPA 70.
PART 2 - PRODUCTS
2.1
MANUFACTURERS
A.
Manufacturers: Subject to compliance with requirements, available manufacturers offering
products that may be incorporated into the Work include, but are not limited to, the following:
1.
2.
3.
4.
2.2
Cooper Bussmann, Inc.
Edison Fuse, Inc.
Ferraz Shawmut, Inc.
Littelfuse, Inc.
CARTRIDGE FUSES
A.
Characteristics: NEMA FU 1, nonrenewable cartridge fuses with voltage ratings consistent
with circuit voltages.
PART 3 - EXECUTION
3.1
FUSE APPLICATIONS
A.
Motor Branch Circuits: Class RK5, fast acting.
B.
Control Circuits: Class CC, fast acting.
3.2
INSTALLATION
A.
3.3
Install fuses in fusible devices.
removing fuse.
Arrange fuses so rating information is readable without
IDENTIFICATION
A.
Install labels complying with requirements for identification specified in Division 26 Section
"Identification for Electrical Systems" and indicating fuse replacement information on inside
door of each fused switch and adjacent to each fuse block and holder.
END OF SECTION 262813
FUSES
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City of Saratoga Springs, New York
Adams Street Pumping Station Mechanical Upgrades
SECTION 262816 - ENCLOSED SWITCHES AND CIRCUIT BREAKERS
PART 1 - GENERAL
1.1
SUMMARY
A.
Section Includes:
1.
2.
3.
4.
5.
6.
1.2
Fusible switches.
Nonfusible switches.
Receptacle switches.
Shunt trip switches.
Molded-case circuit breakers (MCCBs).
Enclosures.
DEFINITIONS
A.
NC: Normally closed.
B.
NO: Normally open.
C.
SPDT: Single pole, double throw.
1.3
PERFORMANCE REQUIREMENTS
A.
Seismic Performance: Enclosed switches and circuit breakers shall withstand the effects of
earthquake motions determined according to ASCE/SEI 7, NYS Building Code.
1.
1.4
The term "withstand" means "the unit will remain in place without separation of any parts
from the device when subjected to the seismic forces specified and the unit will be fully
operational after the seismic event."
SUBMITTALS
A.
Product Data: For each type of enclosed switch, circuit breaker, accessory, and component
indicated.
B.
Shop Drawings: For enclosed switches and circuit breakers. Include plans, elevations, sections,
details, and attachments to other work.
1.
Wiring Diagrams: For power, signal, and control wiring.
C.
Seismic Qualification Certificates: For enclosed switches and circuit breakers, accessories, and
components, from manufacturer.
D.
Field quality-control reports.
ENCLOSED SWITCHES AND CIRCUIT BREAKERS
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E.
1.5
City of Saratoga Springs, New York
Adams Street Pumping Station Mechanical Upgrades
Operation and maintenance data.
QUALITY ASSURANCE
A.
Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70,
by a qualified testing agency, and marked for intended location and application.
B.
Comply with NFPA 70.
1.6
EXTRA MATERIALS
A.
Furnish extra materials that match products installed and that are packaged with protective
covering for storage and identified with labels describing contents.
1.
2.
Fuses: Equal to 10 percent of quantity installed for each size and type, but no fewer than
three of each size and type.
Fuse Pullers: Two for each size and type.
PART 2 - PRODUCTS
2.1
FUSIBLE SWITCHES
A.
Basis-of-Design Product: Subject to compliance with requirements, provide product indicated
on Drawings or comparable product by one of the following:
1.
2.
3.
4.
Eaton Electrical Inc.; Cutler-Hammer Business Unit.
General Electric Company; GE Consumer & Industrial - Electrical Distribution.
Siemens Energy & Automation, Inc.
Square D; a brand of Schneider Electric.
B.
Type HD, Heavy Duty, Single Throw, 240-V ac, 1200 A and Smaller: UL 98 and NEMA KS 1,
horsepower rated, with clips or bolt pads to accommodate indicated fuses, lockable handle with
capability to accept three padlocks, and interlocked with cover in closed position.
C.
Accessories:
1.
2.
3.
4.
Equipment Ground Kit: Internally mounted and labeled for copper and aluminum ground
conductors.
Neutral Kit: Internally mounted; insulated, capable of being grounded and bonded;
labeled for copper and aluminum neutral conductors.
Class R Fuse Kit: Provides rejection of other fuse types when Class R fuses are
specified.
Lugs: Suitable for number, size, and conductor material.
ENCLOSED SWITCHES AND CIRCUIT BREAKERS
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2.2
City of Saratoga Springs, New York
Adams Street Pumping Station Mechanical Upgrades
SHUNT TRIP SWITCHES
A.
Manufacturers: Subject to compliance with requirements, available manufacturers offering
products that may be incorporated into the Work include, but are not limited to, the following:
1.
2.
3.
Cooper Bussmann, Inc.
Ferraz Shawmut, Inc.
Littelfuse, Inc.
B.
General Requirements: Comply with ASME A17.1, UL 50, and UL 98, with 200-kA
interrupting and short-circuit current rating when fitted with Class J fuses.
C.
Switches: Three-pole, horsepower rated, with integral shunt trip mechanism and Class J fuse
block; lockable handle with capability to accept three padlocks; interlocked with cover in closed
position.
D.
Control Circuit: 120-V ac; obtained from integral control power transformer, with primary and
secondary fuses, with a control power transformer of enough capacity to operate shunt trip,
connected pilot, and indicating and control devices.
E.
Accessories:
1.
2.
3.
4.
5.
2.3
Oiltight key switch for key-to-test function.
Oiltight ON pilot light.
Isolated neutral lug.
Mechanically interlocked auxiliary contacts that change state when switch is opened and
closed.
Form C alarm contacts that change state when switch is tripped.
MOLDED-CASE CIRCUIT BREAKERS
A.
Manufacturers: Subject to compliance with requirements, available manufacturers offering
products that may be incorporated into the Work include, but are not limited to, the following:
1.
2.
3.
4.
Eaton Electrical Inc.; Cutler-Hammer Business Unit.
General Electric Company; GE Consumer & Industrial - Electrical Distribution.
Siemens Energy & Automation, Inc.
Square D; a brand of Schneider Electric.
B.
General Requirements:
Comply with UL 489, NEMA AB 1, and NEMA AB 3, with
interrupting capacity to comply with available fault currents.
C.
Thermal-Magnetic Circuit Breakers: Inverse time-current element for low-level overloads and
instantaneous magnetic trip element for short circuits. Adjustable magnetic trip setting for
circuit-breaker frame sizes 250 A and larger.
D.
Electronic Trip Circuit Breakers: Field-replaceable rating plug, rms sensing, with the following
field-adjustable settings:
1.
Instantaneous trip.
ENCLOSED SWITCHES AND CIRCUIT BREAKERS
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2.
3.
4.
City of Saratoga Springs, New York
Adams Street Pumping Station Mechanical Upgrades
Long- and short-time pickup levels.
Long- and short-time time adjustments.
Ground-fault pickup level, time delay, and I2t response.
E.
Current-Limiting Circuit Breakers: Frame sizes 400 A and smaller, and let-through ratings less
than NEMA FU 1, RK-5.
F.
Features and Accessories:
1.
2.
3.
4.
5.
6.
7.
2.4
Standard frame sizes, trip ratings, and number of poles.
Lugs: Suitable for number, size, trip ratings, and conductor material.
Application Listing: Appropriate for application; Type SWD for switching fluorescent
lighting loads; Type HID for feeding fluorescent and high-intensity discharge lighting
circuits.
Ground-Fault Protection: Comply with UL 1053; integrally mounted, self-powered type
with mechanical ground-fault indicator; relay with adjustable pickup and time-delay
settings, push-to-test feature, internal memory, and shunt trip unit; and three-phase, zerosequence current transformer/sensor.
Shunt Trip: Trip coil energized from separate circuit, with coil-clearing contact.
Auxiliary Contacts: Two SPDT switches with "a" and "b" contacts; "a" contacts mimic
circuit-breaker contacts, "b" contacts operate in reverse of circuit-breaker contacts.
Alarm Switch: One [NO] [NC] contact that operates only when circuit breaker has
tripped.
ENCLOSURES
A.
Enclosed Switches and Circuit Breakers: NEMA AB 1, NEMA KS 1, NEMA 250, and UL 50,
to comply with environmental conditions at installed location.
1.
2.
3.
4.
5.
Indoor, Dry and Clean Locations: NEMA 250, Type 12.
Outdoor Locations: NEMA 250, Type 4X stainless steel.
Other Wet or Damp, Indoor Locations: NEMA 250, Type 4X.
Indoor Locations Subject to Dust, Falling Dirt, and Dripping Noncorrosive Liquids:
NEMA 250, Type 12.
Hazardous Areas Indicated on Drawings: NEMA 250, Type 7.
PART 3 - EXECUTION
3.1
INSTALLATION
A.
Install individual wall-mounted switches and circuit breakers with tops at uniform height unless
otherwise indicated.
B.
Comply with mounting and anchoring requirements specified in Division 26 Section "Vibration
and Seismic Controls for Electrical Systems."
C.
Temporary Lifting Provisions: Remove temporary lifting eyes, channels, and brackets and
temporary blocking of moving parts from enclosures and components.
ENCLOSED SWITCHES AND CIRCUIT BREAKERS
262816 - 4
CONTRACT 2016-03
Stantec Consulting Services, Inc.
D.
Install fuses in fusible devices.
E.
Comply with NECA 1.
3.2
City of Saratoga Springs, New York
Adams Street Pumping Station Mechanical Upgrades
IDENTIFICATION
A.
Comply with requirements in Division 26 Section "Identification for Electrical Systems."
1.
2.
3.3
Identify field-installed conductors, interconnecting wiring, and components; provide
warning signs.
Label each enclosure with engraved metal or laminated-plastic nameplate.
FIELD QUALITY CONTROL
A.
Perform tests and inspections.
B.
Acceptance Testing Preparation:
1.
2.
C.
Test insulation resistance for each enclosed switch and circuit breaker, component,
connecting supply, feeder, and control circuit.
Test continuity of each circuit.
Tests and Inspections:
1.
2.
Perform each visual and mechanical inspection and electrical test stated in NETA
Acceptance Testing Specification. Certify compliance with test parameters.
Correct malfunctioning units on-site, where possible, and retest to demonstrate
compliance; otherwise, replace with new units and retest.
D.
Enclosed switches and circuit breakers will be considered defective if they do not pass tests and
inspections.
E.
Prepare test and inspection reports, including a certified report that identifies enclosed switches
and circuit breakers and that describes scanning results. Include notation of deficiencies
detected, remedial action taken, and observations after remedial action.
END OF SECTION 262816
ENCLOSED SWITCHES AND CIRCUIT BREAKERS
262816 - 5
B
A
A
B
ADAMS STREET PUMPING STATION, WET WELL EXISTING CONDITIONS
Not To Scale
ADAMS STREET PUMPING STATION
Not To Scale
ADAMS STREET PUMPING STATION
Not To Scale
GENERAL NOTES:
A
A
ADAMS STREET PUMPING STATION
SCALE: 1"=2'
ADAMS STREET PUMPING STATION
SCALE: 1"=2'
GENERAL NOTES:
C
B
B
C
ADAMS STREET PUMPING STATION, WET WELL
ADAMS STREET PUMPING STATION, WET WELL
SCALE: 1"=2'
SCALE: 1"=2'
ADAMS STREET PUMPING STATION, WET WELL
SCALE: 1"=2'
APPURTENANCE SCHEDULE FOR PUMP STATION "DRY PIT"
SINGLE LINE DIAGRAM
NOT TO SCALE
NOTES:
FAN SCHEDULE
NOTES:
PUMP CONTROL LOGIC FOR PUMP STATION UPGRADES (SEE SPECIFICATION SECTION 221329 - SANITARY SEWERAGE PUMPS & EQUIPMENT)
APPURTENANCE SCHEDULE FOR "WET WELL" PUMP STATION UPGRADES