22_14_29.00_40.pdf

Green Brook, Segment C-1

AMENDMENT # 1

SECTION 22 14 29.00 40

SUMP PUMPS

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

HYDRAULIC INSTITUTE (HI)

HI M100 (2009) HI Pump Standards Set

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO)

ISO 1940-1 (2003; R 2008) Mechanical Vibration - Balance Quality Requirements for Rotors in a Constant (Rigid) State - Part 1:

Specification and Verification of Balance Tolerances

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

NEMA 250 (2014) Enclosures for Electrical Equipment (1000 Volts Maximum)

NEMA MG 1 (2016; SUPP 2016) Motors and Generators

1.2 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submittals with an "S" are for inclusion in the Sustainability eNotebook, in conformance to Section 01 33 29 SUSTAINABILITY REPORTING. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Connection Diagrams; G, RO

Control Diagrams; G, RO

Installation Drawings; G, RO

SD-03 Product Data

Manufacturer's Catalog Data; G, RO

Pump Performance Curve; G, RO

Spare Parts List; G, RO

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Special Tools; G, RO

Wet-Pit Sump Pumps; G, RO

Submersible Pumps; G, RO

Accessories; G, RO

Pump Rail System Assembly; G, RO

SD-06 Test Reports

Hydrostatic Leak; G, RO

Static Heads; G, RO

Pump Flow Capacity; G, RO

SD-07 Certificates

Manufacturer's Certification of Bearing Life

SD-08 Manufacturer's Instructions

Manufacturer's Installation Instructions

Vibration Specifications

1.3 DELIVERY, STORAGE, AND HANDLING

Inspect the pump for damage or other distress when received at the project site. Store the pump and associated equipment indoors as recommended by the pump manufacturer, protected from construction or weather hazards at the project site. Before installation, provide adequate short-term storage for the pump and equipment in a covered, dry, and ventilated location.

Follow the manufacturer's instructions for extended storage.

PART 2 PRODUCTS

Provide a pump and motor with vibration levels conforming to ISO 1940-1 unless otherwise noted. Ensure that motor vibration levels conform to NEMA MG 1, Motors and Generators, Part 7, unless otherwise noted.

2.1 SYSTEM DESCRIPTION

Show details of connection of cables and pump motors on connection diagrams for sump pumps.

Submit control diagrams for sump pumps showing motor starters, relays, or any other component necessary for safe operation.

Ensure that installation drawings for sump pumps are in accordance with the manufacturer's recommended instructions.

Submit manufacturer's catalog data for sump pumps showing the sump pump size, type, and efficiency rating along with performance data, including pump performance curve, indicating brake horsepower, head, flow rate, and

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NPSH (net positive suction head). Also include equipment foundation data and equipment data.

Provide manufacturer's installation instructions and vibration specifications.

2.2 EQUIPMENT

2.2.1 Submersible Pumps

Construct and furnish pumps and accessories in accordance with the requirements of HI M100 standards and those specified herein.

Provide a simplex pump unit that includes a submersible sewage pump with an automatic level-control system.

Provide a simplex pump unit that includes a submersible pump with3-level float-switch and automatic level-control mechanism.

Install an operating switch such that in case of failure, the operating switch does not require breaking of pump-motor seals for repairs.

Provide a Hand off Automatic (HOA) switch.

Avoid contact between dissimilar metals. Where such contact cannot be avoided, protect joints between dissimilar metals against galvanic corrosion by plating, organic-insulation coatings, gaskets, or other suitable means.

The Contractor at his option may substitute a Water Pressure Level Transducer System that is capable of providing ALL The Capabilities as stated for the 3-Float Control System within this Specification Section, provide Contractor' Proposal for Shop Drawing Review; further the Transducer Level Control System and its Supervisory Control and Data Acquisition (SCADA) System shall integrate fully into the Main Stormwater Pump Control System's Programmable Logic Control (PLC) System Panel for Operator Control and Monitoring. Coordinate with Specification Section 25 14 01, Pump Station Instrumentation and Control Panels.

2.2.1.1 Pump Selection

Provide a pump with duty conditions as indicated on drawings.

Ensure that pump seals, lubricant, and electrical insulation are suitable for service in liquids up to 140 degrees F.

2.2.1.2 Pump Housing

Provide a pump housing that encloses the pump motor and volute with its integrally cast feet. Provide a cast-iron pump housing that is watertight under all heads normal to the service, and constructed to permit inspection and repair. Furnish a volute designed to withstand a hydrostatic pressure of not less than 1-1/2 times the design shutoff head of the pump.

2.2.1.3 Impeller

Provide a dynamically balanced and totally enclosed bronze impeller.

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Provide a cast-iron housing, non-clogging impeller designed to provide maximum freedom from clogging when liquid-containing rags and stringy material is handled. Provide an impeller that is dynamically balanced and that has a minimum solid-sphere handling capability ofthe size as listed in the Contract Drawing Equipment Schedule, or minimum of 2-inches diameter, whichever is greater..

2.2.1.4 Pump Shaft

Provide a pump shaft that is an extension of the motor shaft and constructed of ground and polished AISI Type 300 or 400 series corrosion-resistant steel with hard-wearing surfaces (over 300 Brinell).

2.2.1.5 Mechanical Seal

Provide the manufacturer's standard mechanical pump shaft seal specifically constructed for the service duty temperature and resistance to pumped fluid.

2.2.1.6 Bearings and Lubrication

Furnish antifriction ball- or roller-bearings with full provision for the mechanical and hydraulic, radial, and thrust loads imposed. Seal and permanently grease- or oil-lubricate the bearings.

2.2.1.7 Motor and Power Cord

Provide a permanently sealed, oil-filled, and watertight motor of the manufacturer's standard construction for the service. Fit the motor space with watertight expansion provisions to accommodate the temperature normal to the specified duty. Ensure that the motor seals remain watertight under any pressure developed in the volute and under a sump-level static head of not less than 30 feet of water.

Ensure that circuits for three-phase motors provide overload protection.

Provide single-phase motors with automatic-reset thermal-overload protection.

Provide a waterproof, internally grounded, oil-resistant, Type SO chloroprene power cord, with a three-prong plug of the indicated length.

2.2.1.8 Liquid-Level Control

Furnish simplex units with a 3-float-operated switch mechanism to ensure automatic operation of the pump unit when the liquid in the sump rises to a the predetermined/selected levels. Set pump levels to operate such there will be minimal cycling of the pump; the setting levels shall be field coordinated with the Government Field Contractor Officer Representative (COR).Provide a cover-mounted switch and Type 1, general-purpose enclosure in accordance with NEMA 250. The Sump-pump system shall provdie a means of adjustment to allow for variation in the start and stop level-control points; hence, the pump level controls system shall be adjustable. Provide an AISI Type 304 or 316 corrosion-resistant steel parts and hardware.

Provide bronze, brass, or materials of equivalent resistance to the corrosive effects of the pumped fluid for all other wetted parts of the fluid-level sensing mechanism.

The Contractor at his option may substitute a Water Pressure Level Transducer System that is capable of providing ALL The Capabilities as

SECTION 22 14 29.00 40 Page 4 stated for the 3-Float Control System within this Specification Section, provide Contractor' Proposal for Shop Drawing Review; further the Transducer Level Control System and its Supervisory Control and Data Acquisition (SCADA) System shall integrate fully into the Main Stormwater Pump Control System's Programmable Logic Control (PLC) System Panel for Operator Control and Monitoring. Coordinate with Specification Section 25 14 01, Pump Station Instrumentation and Control Panels.

Contractor has the option to utilize a multi-level pressure transducer to perform the same task in lieu of the 3 float measuring system; however all function shall be incorporate the same features and capabilities. This shall be integrated with the main pumps and system Program Logic Controller (PLC). Coordinate all work with Electrical and Controls discipline.

2.3 High-Water Alarm

Provide a high-water alarm switch complete with actuating mechanism for operation on an electrical circuit other than the motor circuit. Design the switch to operate the indicated alarm devices whenever a predetermined high-water level is reached in the sump. Provide a switch enclosure that is the same as the rated for the same as the level-controllocation it is to be located. If installation of switch is located outdoors then it shall be rated for the wet and outdoors temperature environment it will experience -which shall mean it will be rated NEMA 4X.

2.4 Painting

Treat and paint equipment in accordance with the manufacturer's standard practice for the specified duty.

2.5 Pump Rail System Assembly

Provide Sump Pump with a pump-rail system assembly as shown and described in the Contract Drawings and Equipment Schedule; the Pump-Rail System Assembly shall be from the same Sump Pump manufacturer. Provide and include all hardware as described, but not only limited, to accomplish the intended installation and its use as required. Provide the necessary pull-chain/hook system for the pump rail system and include a method to secure and attach the free-end of the chain assembly for ready availability on demand. Also, provide a flotation device on the free end, or tethered to the free-end, of the pull-chain in the event it is dropped into the water to facilitate easy retrieval of the pull-chain.

2.6 Integration

Sump Pump shall be integrated with main Program Logic Control (PLC) such that when main pumps are on, sump pump shall be off. And conversely when sump pump is on, main shall be off. Provide operator visual confirmation at PLC panel.

PART 3 EXECUTION

3.1 INSTALLATION

Install equipment in accordance with manufacturer's recommendations.

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3.1.1 Alignment

Before attempting alignment, demonstrate that the pump does not have any load/force imposed by the piping system. Minimum alignment values (below) are for pump and driver at normal running temperatures. Compensate values for thermal growth. Correct limited movement of the pump or driver (commonly known as bolt-bound) to ensure alignment capability. Ensure that hold down bolts are not undercut in order to perform adjustment.

Ensure that shims are commercially die-cut, without seams or folds, and are made of corrosion-resistant stainless steel. Do not use more than four shims at any single point.

For units with drive motors over 7.5 HP hp, install alignment jack bolts.

Pump and driver may have an intermediate shaft, spacer, or spool piece (sometimes called a jackshaft) Based on the motor's nominal operating speed, align the pump and driver to the following minimum specifications:

Speed(RPM) close-coupled offset(mils) close-coupled angle(mils/in) spool piece angle (mils/in @ coupling pt.)

600 6.0 2.0 3.0

900 5.0 1.5 2.0

1200 4.0 1.0 1.5

1800 3.0 0.5 1.0

3600 1.5 0.4 0.5

7200 1.0 0.3 0.4

Provide final alignment settings as part of the final test data.

3.2 FIELD QUALITY CONTROL

3.2.1 Vibration Analyzer

Use a Fast Fourier Transform (FFT) analyzer to measure vibration levels.

Provide an FFT analyzer with the following characteristics: a dynamic range greater than 70 dB; a minimum of 400 line resolution; a frequency response range of 5 Hz to 10 kHz (300 to 600,000 cpm); the capacity to perform ensemble averaging; the capability to use a Hanning window;

autoranging frequency amplitude; a minimum amplitude accuracy over the selected frequency range of plus or minus 20 percent or plus or minus 1.5 dB.

Use an accelerometer (either stud-mounted or mounted using a rare-earth, low-mass magnet) and sound disk(or finished surface) with the FFT analyzer to collect data. Ensure that the mass of the accelerometer and its mounting has minimal influence on the frequency response of the system over the selected measurement range.

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3.2.2 Pump Acceptance

Ensure that vibration analysis verifies pump conformance to specifications. Ensure that vibration levels are not more than 0.075 in/sec at 1 times run speed and at pump frequency, and 0.04 in/sec at other multiples of run speed.

Perform tests, including hydrostatic leak checking of piping and operation of equipment, in accordance with the manufacturer's instructions.

Operate pumps against static heads indicated, and verify pump flow capacity.

Provide final test reports to the Contracting Officer. Provide reports with a cover letter/sheet clearly marked with the System name, Date, and the words "Final Test Reports - Forward to the Systems Engineer/Condition Monitoring Office/Predictive Testing Group for inclusion in the Maintenance Database."

3.3 CLOSEOUT ACTIVITIES

Submit six copies of the manufacturer' complete spare parts list, showing all parts, spare parts, and bulletins for pumps. Clearly show all details and parts, and adequately describe parts or furnish proper identification marks. Drawings incorporated in the parts lists may be reduced to one-page size provided that they are clear and legible, or the full-size drawings may be folded to the size of the list pages. Photographs or catalog cuts of components may be included for identification.

Furnish one set of all special tools necessary to completely assemble, disassemble, or maintain the pumps. "Special tools" refers to oversized or specially dimensioned tools, special attachments or fixtures, or any similar items.

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3.3 CLOSEOUT ACTIVITIES