Am-0001_W9128F26BA018_Revised Spec Section 35 45 01.pdf

Water Intake - Fort Thompson, South Dakota MR00114

SECTION TABLE OF CONTENTS

DIVISION 35 - WATERWAY AND MARINE CONSTRUCTION

SECTION 35 45 01

[*Am-1]VERTICAL TURBINE PUMPS [**Am-1]

02/21, CHG 3: 08/23

PART 1 GENERAL

1.1 REFERENCES

1.2 SUBMITTALS

1.3 QUALITY ASSURANCE

1.3.1 Detail Drawings

1.4 DELIVERY, STORAGE, AND HANDLING

1.4.1 General

1.4.2 Processing for Storage

1.5 PROJECT/SITE CONDITIONS

1.5.1 Datum

1.5.2 Static Head

1.6 MAINTENANCE

1.6.1 Special Tools

1.6.2 Extra Materials

1.7 WARRANTY

PART 2 PRODUCTS

2.1 SYSTEM DESCRIPTION

2.1.1 Design Requirements

2.1.2 Capacities

2.1.3 Pump Curves

2.2 MATERIALS

2.3 METALWORK FABRICATION

2.3.1 Designated Materials

2.3.2 Bolted Connections

2.3.2.1 Bolts, Nuts, and Washers

2.3.2.2 Materials Not Specifically Described

2.3.3 Metalwork

2.3.3.1 Flame Cutting of Material

2.3.4 Examination of Castings

2.3.4.1 Examination Procedures

2.3.4.1.1 Ultrasonic

2.3.4.1.2 Magnetic Particle

2.3.4.1.3 Liquid Penetrant

2.4 VERTICAL PUMPS

2.4.1 Speed

2.4.2 Reverse Rotation

2.4.3 Efficiency

2.4.4 Suction Bell

2.4.5 Impeller Bowl

2.4.6 Diffuser Bowl

2.4.7 Pump Column and Discharge Elbow

2.4.7.1 Column and Discharge Elbow

2.4.8 Impeller

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[*Am-1]VERTICAL TURBINE PUMPS [**Am-1]

2.4.9 Shafting

2.4.9.1 Shaft

2.4.10 Guide Bearings and Seals

2.4.11 Thrust Bearing

2.4.12 Packing Gland[*Am-1]/Mechanical Seal [**Am-1]

2.4.13 Air Release Valve

2.5 LUBRICATION SYSTEM

2.6 PAINTING

2.7 FACTORY ASSEMBLY

2.8 BASEPLATE AND SUPPORTS

2.9 TESTS, INSPECTIONS, AND VERIFICATIONS

2.9.1 Pump Testing

2.9.2 Dynamic Analysis

2.9.3 Factory Performance Test

2.10 PUMP DRAINAGE

2.11 CERTIFIED TEST REPORT

PART 3 EXECUTION

3.1 INSTALLATION

3.1.1 Operation and Maintenance Manuals

3.2 FIELD TESTS

3.2.1 [*Am-1]Dry/Motor[**Am-1] Tests

3.2.2 Wet Tests

-- End of Section Table of Contents --

SECTION 35 45 01 Page 2Am #0001

[*Am-1]/Mechanical Seal [**Am-1]

[*Am-1]Dry/Motor[**Am-1]

SECTION 35 45 01

[*Am-1]VERTICAL TURBINE PUMPS [**Am-1]

02/21, CHG 3: 08/23

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.

AMERICAN PETROLEUM INSTITUTE (API)

API RP 686 (2009) Recommended Practice for Machinery Installation and Installation Design

AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME)

ASME B46.1 (2020) Surface Texture, Surface Roughness, Waviness and Lay

AMERICAN WATER WORKS ASSOCIATION (AWWA)

AWWA C200 (2012) Steel Water Pipe - 6 In. (150 mm) and Larger

AWWA C203 (2020) Coal-Tar Protective Coatings and Linings for Steel Water Pipelines - Enamel and Tape - Hot-Applied

AWWA C207 (2018) Standard for Steel Pipe Flanges for Waterworks Service, Sizes 4 in. through 144 in. (100 mm through 3600 mm)

AWWA C208 (2022) Dimensions for Fabricated Steel Water Pipe Fittings

AMERICAN WELDING SOCIETY (AWS)

AWS D1.1/D1.1M (2020; Errata 1 2021) Structural Welding Code - Steel

ASTM INTERNATIONAL (ASTM)

ASTM A27/A27M (2020) Standard Specification for Steel Castings, Carbon, for General Application

ASTM A36/A36M (2019) Standard Specification for Carbon Structural Steel

ASTM A48/A48M (2003; R 2021) Standard Specification for Gray Iron Castings

ASTM A108 (2013) Standard Specification for Steel Bar, Carbon and Alloy, Cold-Finished

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[*Am-1]VERTICAL TURBINE PUMPS [**Am-1]

ASTM A217/A217M (2022) Standard Specification for Steel Castings, Martensitic Stainless and Alloy, for Pressure-Containing Parts, Suitable for High-Temperature Service

ASTM A242/A242M (2013; R 2018) Standard Specification for High-Strength Low-Alloy Structural Steel

ASTM A276/A276M (2017) Standard Specification for Stainless Steel Bars and Shapes

ASTM A285/A285M (2017) Standard Specification for Pressure Vessel Plates, Carbon Steel, Low- and Intermediate-Tensile Strength

ASTM A312/A312M (2022a) Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes

ASTM A351/A351M (2018) Standard Specification for Castings, Austenitic, for Pressure-Containing Parts

ASTM A352/A352M (2021) Standard Specification for Steel Castings, Ferritic and Martensitic, for Pressure-Containing Parts, Suitable for Low-Temperature Service

ASTM A516/A516M (2017) Standard Specification for Pressure Vessel Plates, Carbon Steel, for Moderate-and Lower-Temperature Service

ASTM A576 (2017) Standard Specification for Steel Bars, Carbon, Hot-Wrought, Special Quality

ASTM A609/A609M (2012; R 2018) Standard Practice for Castings, Carbon, Low-Alloy, and Martensitic Stainless Steel, Ultrasonic Examination Thereof

ASTM A668/A668M (2023) Standard Specification for Steel Forgings, Carbon and Alloy, for General Industrial Use

ASTM A743/A743M (2021) Standard Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application

ASTM B148 (2014) Standard Specification for Aluminum-Bronze Sand Castings

ASTM B584 (2022) Standard Specification for Copper Alloy Sand Castings for General Applications

ASTM D2000 (2018) Standard Classification System for Rubber Products in Automotive Applications

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ASTM E165/E165M (2018) Standard Practice for Liquid Penetrant Examination for General Industry

ASTM E709 (2021) Standard Guide for Magnetic Particle Testing

HYDRAULIC INSTITUTE (HI)

HI 9.1-9.5 (2021) Pumps General Guidelines for Materials, Sound Testing, and Decontamination - B117

HI 9.6.4 (2009) Rotodynamic Pumps for Vibration Analysis and Allowable Values

HI ANSI/HI 14.6 (2011) Rotodynamic Pumps for Hydraulic Performance Acceptance Tests - A136

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

[*Am-1] <text deleted> [**Am-1]

1.2 SUBMITTALS

Government approval is required for submittals with a "G" or "S" classification. Submittals not having a "G" or "S" classification are for Contractor Quality Control approval.for information only. When used, a code following the "G" classification identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Contractor Selected Manufacturers; G, DO

SD-02 Shop Drawings

Detail Drawings; G, RO, DO

SD-03 Product Data

Humidity-Controlled Storage

Materials; G, RO

Spare Parts

Shipping Bills

Pump Curves; G, DO

Preliminary Pump Curves; G, DO

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[*Am-1] <text deleted> [**Am-1]

Installation and Erection Instructions Manual

Field Tests

Impeller Weight

[*Am-1] <submittal deleted> [**Am-1]

Grout; G

[*Am-1] <submittal deleted> [**Am-1]

SD-05 Design Data

Dynamic Analysis; G

Stress-Relieving Procedure; G

Piping; G

Baseplates and the Anchoring Bolts

SD-06 Test Reports

Witness Test

Factory Test

Balancing Procedure; G

Results Of Impeller Balancing

Field Test Results

SD-07 Certificates

Examination Procedure And Qualification Of The Examiner; G, RO

Qualifications Of Erecting Engineer; G

[*Am-1] <submittal deleted> [**Am-1]

SD-10 Operation and Maintenance Data

Operation and Maintenance Instructions Manual; G, RO

1.3 QUALITY ASSURANCE

Provide one or more competent erecting engineers who is knowledgeable about the installation of vertical pumps and associated drive machinery.

Erecting engineers provided by this section must include those from the Contractor's suppliers. [*Am-1] <text deleted> [**Am-1]

1.3.1 Detail Drawings

Submit drawings of sufficient size to be easily read, within 90 days of notice of award of contract. Submit information in the English language.

Provide with English (IP) dimensions. Submit drawings requiring changes

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[*Am-1] <submittal deleted> [**Am-1]

[*Am-1] <submittal deleted> [**Am-1]

[*Am-1] <submittal deleted> [**Am-1] as a result of model test within 45 days after approval of model test.

Drawings must consist of complete designs of the pump, pump installation instructions, performance charts, brochures, and other information required to illustrate that the entire pumping system (including the pump, motor has been coordinated and will function as a unit.

a. Outline drawings of the pump showing pertinent dimensions and weight of each component of the pump. Prepare drawings to scale.

b. Drawing showing details and dimensions of pump mounting design or layout including any embedded items.

c. Cross-sectional drawings of the pump showing each component. Show major or complicated sections of the pump in detail. Indicate on each drawing an itemized list of components showing type, grade, and class of material used and make and model number of standard component used.

d. Detail and assembly drawings required for manufacturing showing dimensions, tolerances, and clearances of shafts, sleeve journals, bearings, including dimensions of grooving, couplings, and packing gland, and diameter and tip clearance of propeller.

e. Drawings covering erection and installation, that are intended to be furnished to the erecting engineer.

f. Drawings of the pump; base plate showing its dimensions.

1.4 DELIVERY, STORAGE, AND HANDLING

1.4.1 General

Outfit major pump components with lifting lugs or eye bolts to facilitate handling. [*Am-1] Prepare pumps and spare parts for storage indoors or in temporary structures providing adequate protection from the elements.

[**Am-1]

1.4.2 Processing for Storage

Prepare pumps and spare parts for storage indoors. Indoor storage consists of a permanent building that has a leak-proof roof, full walls to contain stored equipment, and a concrete floor or temporary trailers. A temporary structure may also be built at the job site for equipment storage that will contain features of the permanent building above except that provision for ventilation must be provided and floor may be crushed rock. Provide a vapor barrier below the crushed rock. Use cribbing below equipment stored on crushed rock so that equipment does not come in contact with crushed rock. Provide a plastic barrier between equipment and wood cribbing. Submit a list of equipment and materials requiring humidity-controlled storage to the Contracting Officer no later than 30 days prior to shipment of pumping units. Store long term (greater than 6 months) in accordance with Contractor selected pump specifications.

1.5 PROJECT/SITE CONDITIONS

1.5.1 Datum

Elevations shown or referred to in this contract, are above or below [*Am-1] <text deleted> [**Am-1] mean sea level North American Vertical Datum of 1988 (NAVD).

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[*Am-1] Prepare pumps and spare parts for storage indoors or in temporary structures providing adequate protection from the elements.

[**Am-1]

1.5.2 Static Head

Static head is the difference, in feet, between water surface elevation in the sump and top of discharge pipe at highest elevation. [*Am-1] <text deleted> [**Am-1]

1.6 MAINTENANCE

1.6.1 Special Tools

Include one set of special tools required to completely assemble, disassemble, or maintain the pumps. Special tools refer to oversized or specially dimensioned tools, special attachments or fixtures, or any similar items. If required, provide a device for temporarily supporting the pump shaft and impeller during assembly, disassembly, and reassembly of the motor when the thrust bearing is not in place. Provide lifting devices required for use in conjunction with the overhead crane. Provide a portable steel cabinet large enough to accommodate all special tools included under this paragraph and as required by Section(s) 26 29 01.00 10 ELECTRIC MOTORS, 3-PHASE VERTICAL INDUCTION TYPE. Mount the cabinet on four rubber-tired casters. Provide drawers to accommodate tools. Fit front of cabinet with doors hinged to swing horizontally. Furnish doors with necessary stops, catches, and hasps for completely securing the cabinet with a padlock. Furnish the padlock complete with three keys.

Pack special tools in wooden boxes if the size and weight do not permit storage in the tool cabinet. Provide slings if the box and tools are heavier than 75 pounds.

1.6.2 Extra Materials

Provide [*Am-1] one set of special tools required to completely assemble, disassemble, or maintain the pumps. Provide [**Am-1]the following spare parts:

a. One complete replacement set of bearings, [*Am-1] and packing/mechanical[**Am-1] seals for each size pump.

[*Am-1] <text deleted> [**Am-1]

b. Fifty percent of each size and length of bolt, nut, and washer used on each size pump assembly.

[*Am-1] <text deleted> [**Am-1]

1.7 WARRANTY

Provide a warranty for all equipment included under this section against defective workmanship, materials, design, and performance for a period of 2 years from the date the equipment is accepted. If the equipment or part does not conform to these warranties, and the Government notifies the Contractor within a reasonable time after its discovery, the Contractor must promptly correct such nonconformity by repair or replacement.

Coordinate the down time and repair for the equipment with the Contracting Officer. The Contractor is liable during the warranty period for the direct cost of removal of the equipment from the installed location, transportation for repair, and reinstallation on site. The expense of removing adjacent apparatus, installing spare equipment, costs of supplying temporary service, is not included in this warranty provision.

SECTION 35 45 01 Page 8Am #0001

[*Am-1] <text deleted> [**Am-1]

[*Am-1] one set of special tools required to completely assemble, disassemble, or maintain the pumps. Provide [**Am-1]

[*Am-1] and packing/mechanical[**Am-1]

PART 2 PRODUCTS

2.1 SYSTEM DESCRIPTION

Design and provide a new completed packaged vertical turbine pump system including but not limited to vertical turbine pumps, shafts, bowls, basket strainer with foot valve, motors, magnetic flowmeter, controls, alarms, sensors, displays, valves, and all other ancillary items. The system shall also include all necessary piping and wiring for a complete operational raw water pumping system. All equipment shall be fitted to new pump station slab.

2.1.1 Design Requirements

a. Pumps are for the purpose of pumping lake water from wet well into the Ultrafiltration Treatment Plant. Water pumped will not exceed 80 [*Am-1] <text deleted> [**Am-1]degrees F, will be relatively turbid, and may contain sand, silt, and vegetative trash capable of passing through the intake screen. [*Am-1]

b. Pumps must be engineered and constructed for a heavy-duty application with a minimum 25-year design life. [**Am-1]

c. Drive the pumps with the induction motors described in Section

26 29 01.00 10 ELECTRIC MOTORS, 3-PHASE VERTICAL INDUCTION TYPE.

[*Am-1] <text deleted> [**Am-1]

d. Design documents must be signed and sealed by a professional engineer.

2.1.2 Capacities

Each pump must:

a. The guarantee point for the pump is 833 gal/min with a differential head pressure of 150 feet with water surface in sump at Elevation 1405 feet.

[*Am-1] <text deleted> [**Am-1]

2.1.3 Pump Curves

Indicate on the pump curves for the submitted pumps that the pumps are capable of operating over the entire total head corresponding to the static head range. Also provide pump curves for the startup condition for pumps that are operated at a different speed during startup.

Submit preliminary pump curves with the initial pump submittal. Indicate the pump's expected total head, static heads, brake horsepower, and efficiency, as ordinates. Plot against the pump discharge as the abscissa. The curves must indicate that the pump meets all specified conditions of capacity, head, brake horsepower, and efficiency.

2.2 MATERIALS

Material selection not specified is guided by HI 9.1-9.5 for corrosion, erosion, and abrasion resistance. [*Am-1] Provide standard materials suitable for raw lake water applications. [**Am-1]

a. Identify each pump by means of a separate nameplate permanently affixed in a conspicuous location. The plate must bear the manufacturer's name, model designation, serial number if applicable, SECTION 35 45 01 Page 9Am #0001

[*Am-1] <text deleted> [**Am-1]

[*Am-1]

b. Pumps must be engineered and constructed for a heavy-duty application with a minimum 25-year design life. [**Am-1]

[*Am-1] <text deleted> [**Am-1]

[*Am-1] <text deleted> [**Am-1]

[*Am-1] Provide standard materials suitable for raw lake water applications. [**Am-1] and other pertinent information e.g. horsepower, speed, capacity, type, direction of rotation. Make the plate of corrosion-resisting metal with raised or depressed lettering and a contrasting background.

b. Equip each pump with suitably located instruction plates, including any warnings and cautions, describing any special and important procedures to be followed in starting, operating, and servicing the equipment. Make the plates of corrosion-resisting metal with raised or depressed lettering and contrasting background.

c. Provide safety guards and/or covers wherever necessary to protect the operators from accidental contact with moving parts. Make guards and covers of sheet steel, expanded metal, or another acceptable material and removable for disassembly of the pump.

2.3 METALWORK FABRICATION

2.3.1 Designated Materials

Designated materials must conform to the following specifications, grades, and classifications.

MATERIALS SPECIFICATION GRADE, CLASS

Aluminum-Bronze ASTM B148 Alloy No. C95500 Castings

Cast Iron ASTM A48/A48M Class Nos. 150A 150B, and 150C; 30A, 30B, and 30C

Cast Steel ASTM A27/A27M Grade 65-35, annealed

Cast Stainless Steel ASTM A743/A743M CF8

Coal Tar Protective Coatings

AWWA C203

Cold-Rolled Steel Bars ASTM A108 min, Wt. Strm 65,000 psi

Copper Alloy Castings ASTM B584 Alloy No. C93700

Corrosion-Resistant Alloy Casting

ASTM A217/A217M Grade CA15

ASTM A352/A352M CA6NM

ASTM A351/A351M CF8M

Dimensions for Steel Water Piping Fittings

AWWA C208

Hot-Rolled Stainless ASTM A576 Graded G10200 and G11410

Ring Flanges AWWA C207 Class B

Rubber Products in Automotive Applications

ASTM D2000

Seamless and Welded Austenitic Stainless Steel Pipe

ASTM A312/A312M

Stainless Bars and Shapes ASTM A276/A276M Grades S30400 and S41000

Steel Forging ASTM A668/A668M Class F

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MATERIALS SPECIFICATION GRADE, CLASS

Cast Stainless Steel ASTM A743/A743M CF8

Steel Pipe 6 inch and Larger

AWWA C200

Steel Plates, Pressure Vessel

ASTM A516/A516M Grade 55

Steel Plates, Pressure Vessel

ASTM A242/A242M

Steel Plate, Structural Quality

ASTM A285/A285M Grade B

Structural Steel ASTM A36/A36M

Surface Texture (Surface Roughness, Waviness, and Lay)

ASME B46.1

2.3.2 Bolted Connections

2.3.2.1 Bolts, Nuts, and Washers

Bolts, nuts, and washers must conform to requirements of paragraphs under METALWORK FABRICATION, and paragraphs under VERTICAL PUMPS for types required. Use beveled washers where bearing faces have a slope of more than 1:20 with respect to a plane normal to bolt axis.

2.3.2.2 Materials Not Specifically Described

Materials not specifically described must conform to latest ASTM specification or to other listed commercial specifications covering class or kinds of materials to be used.

2.3.3 Metalwork

2.3.3.1 Flame Cutting of Material

Flame cutting of material other than steel is subject to approval of the Contracting Officer. Shear accurately, and neatly finish all portions of work. Steel may be cut by mechanically guided or hand-guided torches, provided an accurate profile with a smooth surface free from cracks and notches is secured. Prepare surfaces and edges to be welded in accordance with AWS D1.1/D1.1M. Do not chip or grind except where specified and as necessary to remove slag and sharp edges of mechanically guided or hand-guided cuts not exposed to view. Visible or exposed hand-guided cuts must be chipped, ground, or machined to metal free of voids, discontinuities, and foreign materials.

[*Am-1] <text deleted> [**Am-1]

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2.3.4 Examination of Castings

Clean and carefully examine all castings for surface defects. Examine all discovered defects by nondestructive means. Examination personnel must be qualified/certified in accordance with applicable ASTM requirements.

Submit the examination procedure and qualification of the examiner.

Conduct examination tests in the presence of the Contracting Officer.

Choose the examination procedure best suited for the application.

2.3.4.1 Examination Procedures

2.3.4.1.1 Ultrasonic

Conform inspection to the applicable provisions of ASTM A609/A609M.

2.3.4.1.2 Magnetic Particle

Conform inspection to the applicable provisions of ASTM E709.

2.3.4.1.3 Liquid Penetrant

Conform inspection to the applicable provisions of ASTM E165/E165M.

2.4 VERTICAL PUMPS

2.4.1 Speed

Rotative speed of pump must be no greater than 1800 rpm. [*Am-1] <text deleted> [**Am-1]

2.4.2 Reverse Rotation

Each pump [*Am-1] motor assembly must be equipped with a non-reverse ratchet mechanism to provide absolute protection against reverse rotation of the pump and motor in the event of power failure or system backflow.

[**Am-1]

The pump(s) must withstand, with no damage, the full force exerted on it, with the impeller subjected to reverse flow and the upper end locked in place by a backstop. Calculate the head to determine the force developed by this reverse flow from the specified highest discharge side water elevation and lowest pump intake side water elevation. Reverse rotative speed must be 0.0 with instantaneous activation of the backstop.

2.4.3 Efficiency

Pump efficiency, as defined in HI ANSI/HI 14.6, must include losses from the suction bell to the discharge elbow outlet and must not be less than 80 percent at the head-capacity condition(s) specified in paragraph

CAPACITIES.

2.4.4 Suction Bell

Make each suction bell of [*Am-1] heavy-duty cast iron or ductile iron.

[**Am-1] Provide a flanged connection for mating with the impeller bowl [*Am-1] <text deleted> [**Am-1].

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[*Am-1] motor assembly must be equipped with a non-reverse ratchet mechanism to provide absolute protection against reverse rotation of the pump and motor in the event of power failure or system backflow.

[**Am-1]

[*Am-1] heavy-duty cast iron or ductile iron.

[**Am-1]

2.4.5 Impeller Bowl

Make each impeller bowl of [*Am-1] heavy-duty cast iron or ductile iron, lined with a protective coating suitable for raw water if recommended by the manufacturer. Provide flanges or threaded connections for mating with the suction bell and the column pipe. Machine finish the impeller-swept area to proper clearances. [**Am-1]

2.4.6 Diffuser Bowl

Make each diffuser bowl of cast [*Am-1]iron or ductile iron. The diffuser must contain support for the impeller shaft bearing and have vanes to guide the pumped flow. [**Am-1]

2.4.7 Pump Column and Discharge Elbow

2.4.7.1 Column and Discharge Elbow

Make each column [*Am-1]of carbon steel pipe or stainless steel as determined by standard manufacturer sizing for 25-year life in raw water.

Provide flanges or threaded couplings for mating individual segments together. Terminate the pump head/discharge elbow in a plain-end or flanged circular section to connect to the facility discharge piping.[**Am-1]

[*Am-1] <text deleted> [**Am-1]

2.4.8 Impeller

[*Am-1] Impellers must be of the enclosed or semi-open radial/semi-radial centrifugal type. Make the impeller of cast stainless steel or aluminum-bronze. Balance each impeller dynamically to grade G6.3 of ISO 1940-1. [**Am-1]

2.4.9 Shafting

2.4.9.1 Shaft

Each impeller shaft must be stainless steel [*Am-1](e.g., Type 416).

Design shafting so that shaft sections do not exceed standard lengths (typically 10 feet). Couple the pump and motor shafts and pump shaft sections together using rigid threaded or flanged couplings capable of transmitting the forces and torques involved.[**Am-1]

2.4.10 Guide Bearings and Seals

[*Am-1] Pumps shall utilize an open lineshaft design. Submerged pump bearings must be product-lubricated and fabricated from an elastomeric material, fluted rubber, or polymer composite material suitable for operation in fresh water that may contain silt. [**Am-1]

2.4.11 Thrust Bearing

Provide a thrust bearing in the motor to carry total [*Am-1]axial [**Am-1] thrust load [*Am-1]of the pump[**Am-1].

2.4.12 Packing Gland[*Am-1]/Mechanical Seal [**Am-1]

Provide water-lubricated packing gland [*Am-1]or standard mechanical seal

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[*Am-1] heavy-duty cast iron or ductile iron, lined with a protective coating suitable for raw water if recommended by the manufacturer. Provide flanges or threaded connections for mating with the suction bell and the column pipe. Machine finish the impeller-swept area to proper clearances. [**Am-1]

[*Am-1]iron or ductile iron. The diffuser must contain support for the impeller shaft bearing and have vanes to guide the pumped flow. [**Am-1]

[*Am-1]of carbon steel pipe or stainless steel as determined by standard manufacturer sizing for 25-year life in raw water.

Provide flanges or threaded couplings for mating individual segments together. Terminate the pump head/discharge elbow in a plain-end or flanged circular section to connect to the facility discharge piping.[**Am-1]

[*Am-1] <text deleted> [**Am-1]

[*Am-1] Impellers must be of the enclosed or semi-open radial/semi-radial centrifugal type. Make the impeller of cast stainless steel or aluminum-bronze. Balance each impeller dynamically to grade G6.3 of ISO 1940-1. [**Am-1]

[*Am-1](e.g., Type 416).

Design shafting so that shaft sections do not exceed standard lengths (typically 10 feet). Couple the pump and motor shafts and pump shaft sections together using rigid threaded or flanged couplings capable of transmitting the forces and torques involved.[**Am-1]

[*Am-1] Pumps shall utilize an open lineshaft design. Submerged pump bearings must be product-lubricated and fabricated from an elastomeric material, fluted rubber, or polymer composite material suitable for operation in fresh water that may contain silt. [**Am-1]

[*Am-1]axial [**Am-1] [*Am-1]of the pump[**Am-1]

[*Am-1]/Mechanical Seal [**Am-1]

[*Am-1]or standard mechanical seal

[**Am-1]split longitudinally to facilitate removal or renewal. [*Am-1] <text deleted> [**Am-1]

[*Am-1]

2.4.13 Air Release Valve

Provide an air release valve (ARV) assembly for each of the vertical turbine pumps. Install each assembly at the top of the discharge column/head to vent air from the column when the pump is started and to break the vacuum when the pump is stopped. [**Am-1]

2.5 LUBRICATION SYSTEM

[*Am-1] Pump bearings must be open-lineshaft, product-lubricated by the pumped media. [**Am-1]

2.6 PAINTING

Perform painting in accordance with Section 09 90 00 PAINTS AND COATINGS [*Am-1] <text deleted> [**Am-1].

2.7 FACTORY ASSEMBLY

The pump must be assembled at the Contractor's selected manufacturer's plant to assure proper fitting and alignment of all parts. Tolerances cannot exceed those specified or shown on the the manufacturing drawings.

Check rotating elements for binding. The suction bell, impeller housing, diffuser, and the discharge elbow must be properly match marked and have their centerlines clearly marked on the outside of all flanges to facilitate erection and alignment in the field. Notify the Contracting Officer sufficiently in advance to permit a representative of the Contracting Officer to inspect and witness the pump assembly. Matchmark all parts disassembled for shipment.

2.8 BASEPLATE AND SUPPORTS

Design and proportion the soleplate and baseplate to support the entire pump assembly, the motor and the loads [*Am-1] <text deleted> [**Am-1] to which it may be subjected during operation. [*Am-1] <text deleted> [**Am-1]

2.9 TESTS, INSPECTIONS, AND VERIFICATIONS

2.9.1 Pump Testing

Test specified pumps in accordance with HI ANSI/HI 14.6. For all pumps include Performance testing as described in HI ANSI/HI 14.6. [*Am-1]The acceptance grade is 1U. [**Am-1]

2.9.2 Dynamic Analysis

[*Am-1] Perform standard lateral and torsional critical speed analysis for the pump/motor structure to ensure no natural frequencies occur within 25 percent above or below normal operating speed. [**Am-1]

[*Am-1]

2.9.3 Factory Performance Test

Determine the performance of the pump by a series of test points sufficient in number to develop a constant-speed curve over the operating range. Testing must verify capacity, head, brake horsepower, and efficiency. [**Am-1]

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2.4.13 Air Release Valve

Provide an air release valve (ARV) assembly for each of the vertical turbine pumps. Install each assembly at the top of the discharge column/head to vent air from the column when the pump is started and to break the vacuum when the pump is stopped. [**Am-1]

[*Am-1] Pump bearings must be open-lineshaft, product-lubricated by the pumped media. [**Am-1]

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[*Am-1]The acceptance grade is 1U. [**Am-1]

[*Am-1] Perform standard lateral and torsional critical speed analysis for the pump/motor structure to ensure no natural frequencies occur within 25 percent above or below normal operating speed. [**Am-1]

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2.9.3 Factory Performance Test

Determine the performance of the pump by a series of test points sufficient in number to develop a constant-speed curve over the operating range. Testing must verify capacity, head, brake horsepower, and efficiency. [**Am-1]

2.10 PUMP DRAINAGE

[*Am-1] Provide drain provisions for all applicable parts of the pump to eliminate trapped water above the wet well. [**Am-1]

2.11 CERTIFIED TEST REPORT

Submit Contractor's pump manufacturer certified completed test report stating the specified pumps meet HI ANSI/HI 14.6 after testing is complete.

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PART 3 EXECUTION

3.1 INSTALLATION

Install the soleplate and baseplate in accordance with API RP 686.

[*Am-1] Install the equipment specified under this section and related drive machinery in accordance with the approved Installation and Erection Instructions Manual. [**Am-1]

[*Am-1]

3.1.1 Operation and Maintenance Manuals

Submit Operation and Maintenance Instructions Manual containing complete information on operation, lubrication, routine and special maintenance, disassembly, repair, and trouble diagnostics for the pump and auxiliary units in accordance with Section 01 78 23 OPERATION AND MAINTENANCE DATA.[**Am-1]

3.2 FIELD TESTS

After the pumping unit is installed and prior to start-up, completely clean the sump area of any accumulated construction debris. Once final cleaning of the sump area is completed, the area will be area reviewed by a representative of the Government. Correct any damage to the pumping units or related equipment during initial start-up due to foreign objects left in the sump areas.

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3.2.1 [*Am-1]Dry/Motor[**Am-1] Tests

Test [*Am-1]the motor and connections for proper rotation (bumping the motor) uncoupled from the pump shaft to ensure the non-reverse ratchet operates correctly and the pump will not be spun backward. Under no circumstances shall the pump be operated dry.[**Am-1] Submit field test results.

3.2.2 Wet Tests

Test each pump unit under load, at or near normal operating conditions, for at least 2 hours or as directed by the Contracting Officer[*Am-1].

Take [**Am-1] vibration and bearing temperatures in accordance with HI 9.6.4. Submit field test results. Without additional costs to the Government, make all changes and correct any errors. The Contracting Officer may waive or postpone the test if sufficient water is not available.

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[*Am-1] Provide drain provisions for all applicable parts of the pump to eliminate trapped water above the wet well. [**Am-1]

[*Am-1] <text deleted> [**Am-1]

[*Am-1] Install the equipment specified under this section and related drive machinery in accordance with the approved Installation and Erection Instructions Manual. [**Am-1]

[*Am-1]

3.1.1 Operation and Maintenance Manuals

Submit Operation and Maintenance Instructions Manual containing complete information on operation, lubrication, routine and special maintenance, disassembly, repair, and trouble diagnostics for the pump and auxiliary units in accordance with Section 01 78 23 OPERATION AND MAINTENANCE DATA.[**Am-1]

[*Am-1] <text deleted> [**Am-1]

[*Am-1]Dry/Motor[**Am-1]

[*Am-1]the motor and connections for proper rotation (bumping the motor) uncoupled from the pump shaft to ensure the non-reverse ratchet operates correctly and the pump will not be spun backward. Under no circumstances shall the pump be operated dry.[**Am-1]

[*Am-1].

Take [**Am-1]

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