43 26 13 – SUBMERSIBLE SEWAGE PUMPS

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SECTION 43 26 13 – SUBMERSIBLE SEWAGE PUMPS

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Submersible Sewage Pumps.

B. Related Requirements:

1. Section 40 05 51 - Common Requirements for Process Valves: Execution requirements for valves specified by this Section.

2. Section 43 05 20 - Common Work Results for Liquid Handling Equipment: Pump components, appurtenances, and identification requirements common to liquid-handling systems.

1.2 SYSTEM DESCRIPTION

A. General:

1. Provide two (2) pumps for the proposed Equalization Tank, two replacement (2) pumps for the existing Recirculation Pump Station, and four (4) pumps for the Secondary Clarifier.

1.3 REFERENCE STANDARDS

A. American Bearing Manufacturers Association:

1. ABMA 9 - Load Ratings and Fatigue Life for Ball Bearings.

2. ABMA 11 - Load Ratings and Fatigue Life for Roller Bearings.

B. American Iron and Steel Institute:

1. AISI 1045 - Medium Carbon Steel.

C. ASME International:

1. ASME B16.1 - Gray Iron Pipe Flanges and Flanged Fittings: Classes 25, 125, and

250.

D. ASTM International:

1. ASTM A27/A27M - Standard Specification for Steel Castings, Carbon, for General

Application.

2. ASTM A29/A29M - Standard Specification for General Requirements for Steel

Bars, Carbon and Alloy, Hot-Wrought.

3. ASTM A48/A48M - Standard Specification for Gray Iron Castings.

4. ASTM A276/A276M - Standard Specification for Stainless Steel Bars and Shapes.

5. ASTM A536 - Standard Specification for Ductile Iron Castings.

6. ASTM B91 - Standard Specification for Magnesium-Alloy? Forgings.

7. ASTM B505/B505M - Standard Specification for Copper Alloy Continuous

Castings.

E. NSF International:

1. NSF 61 - Drinking Water System Components - Health Effects.

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2. NSF 372 - Drinking Water System Components - Lead Content.

1.4 SUBMITTALS

A. Section 01 33 00 - Submittal Procedures: Requirements for submittals.

B. Product Data: Submit manufacturer information, including installation instructions, accessories, performance curves with specified operating point plotted, capacities and pressure differentials, power, rpm, sound power levels for both inlet and outlet at rated capacity, electrical characteristics, and connection requirements.

C. Shop Drawings:

1. Furnish diagrams showing complete layout of system, including equipment, piping, valves, wiring and ladder diagrams, controls, and control sequences.

2. Indicate size and configuration of assembly, mountings, weights, and accessory connections.

3. Indicate manufacturer's specified displacement tolerances for vibration at operational speed as specified for pumps.

D. Manufacturer's Certificate: Certify that products meet or exceed specified requirements:

1. Certify installation is completed according to manufacturer's instructions.

E. Manufacturer Instructions: Submit detailed instructions on installation requirements, including storage and handling procedures, anchoring, and layout.

F. Source Quality-Control Submittals: Indicate results of factory tests and inspections.

G. Field Quality-Control Submittals: Indicate results of Contractor-furnished tests and inspections.

H. Manufacturer Reports: Certify that equipment has been installed according to manufacturer instructions.

I. Qualifications Statements:

1. Submit qualifications for manufacturer.

1.5 CLOSEOUT SUBMITTALS

A. Section 01 77 00 – Closeout Procedures: Requirements for submittals.

B. Project Record Documents: Record actual locations and final orientation of pumps and appurtenances.

1.6 QUALIFICATIONS

A. Manufacturer: Company specializing in manufacturing products specified in this Section with minimum three years' documented experience.

1.7 WARRANTY

A. Section 01 78 36 - Warranties: Requirements for warranties.

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B. Furnish five-year manufacturer's warranty for pumps and components.

PART 2 - PRODUCTS

2.1 SUBMERSIBLE SEWAGE PUMPS

A. Manufacturers:

1. ITT Goulds Pumps, WS_D4 Series – Model 3888D4.

2. Liberty Pumps.

3. Or Approved Equal.

B. Description: Submersible non-clog pumps, each equipped with submersible electric motor.

C. Pump Designation:

1. Equalization Tank Pumps:

a. 10-P-101.

b. 10-P-102.

2. Recirculation Pump Station Pumps:

a. 20-P-201.

b. 20-P-202.

3. Secondary Clarifier Pumps:

a. 30-P-301.

b. 30-P-302.

c. 30-P-303.

d. 30-P-304.

D. Performance and Design Criteria:

1. 10-P-101 and 10-P-102:

a. Design Flow Rate: 200 gpm.

b. Design Flow Total Dynamic Head: 32 feet.

c. Static Discharge head: 14.5 ft.

d. Maximum Motor Speed: 1,750 rpm.

e. Motor Specifications:

1) 208VAC, 3-Phase, inverter-duty rated, 3 hp.

f. Motor Controller: Variable Frequency Drive.

2. 20-P-201 and 20-P-202:

a. Design Flow Rate: 200 gpm.

b. Design Flow Total Dynamic Head: 33 feet.

c. Static Discharge head: 20 ft.

d. Maximum Motor Speed: 1,750 rpm.

e. Motor Specifications:

1) 208VAC, 3-Phase, inverter-duty rated, 3 hp.

f. Motor Controller: Variable Frequency Drive.

3. 30-P-301, 30-P-302, 30-P-303, and 30-P-304:

a. Design Flow Rate: 60 gpm.

b. Design Flow Total Dynamic Head: 41 feet.

c. Static Discharge head: 35 ft.

d. Maximum Motor Speed: 1,750 rpm.

e. Motor Specifications:

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1) 208VAC, 3-Phase, inverter-duty rated, 3 hp.

f. Motor Controller: Variable Frequency Drive.

E. Casing:

1. Type: Volute.

2. Material: Cast iron, ASTM A48 Class 30.

3. Furnish backhead to permit removal of impeller, shaft, and bearings without affecting piping.

4. End Connections:

a. Flanged.

b. Comply with ASME B16.1, Class 125.

F. Impeller:

1. Two vane semi-open non-clog with pump out vanes for mechanical seal protection.

2. Material: Cast iron, ASTM A48 Class 30.

3. Statically and dynamically balanced after assembly.

G. Shaft:

1. Material: 300 Series Stainless Steel.

2. Couplings: Keyed to shaft.

H. Fasteners:

1. 300 Series Stainless Steel.

I. Spare Parts:

1. Provide two spare pumps equal to and compatible with the pumps specified above.

2.2 PUMP CONTROLS

A. General:

1. Controls for the equalization tank pumps, recirculation pump station pumps, and secondary clarifier pumps shall be provided by the secondary clarifier units, post aeration unit, and equalization tank supplier, as detailed in Section 46 43 21.

a. All control panels and VFDs shall be in accordance with Division 26 and

40 Specifications and as detailed on the Plans.

2.3 FABRICATION

A. Connect pump shaft to drive motor with universal flexible coupling to compensate for minor misalignment and to permit removal of pump-rotating assembly and motor without removing piping.

B. Shaft Guard: Enclose shaft and universal joint with enclosed-type metal shaft guard complying with OSHA standards.

C. Pump and Drive Mating Surfaces: Machine finished.

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2.4 SOURCE QUALITY CONTROL

A. Section 01 40 00 - Quality Requirements: Requirements for testing, inspection, and analysis.

B. Provide shop inspection and testing of completed assembly.

C. Certificate of Compliance:

1. If manufacturer is approved by authorities having jurisdiction, submit certificate of compliance indicating Work performed at manufacturer's facility conforms to Contract Documents.

2. Specified shop tests are not required for Work performed by approved manufacturer.

3. If manufacturer is approved by authorities having jurisdiction, submit certificate of compliance indicating Work performed at manufacturer's facility conforms to Contract Documents.

PART 3 - EXECUTION

3.1 INSTALLATION

A. According to manufacturer instructions.

B. Provide and connect piping, power and control conduit, and wiring to make system operational and ready for startup.

3.2 FIELD QUALITY CONTROL

A. Section 01 40 00 - Quality Requirements: Requirements for inspecting and testing.

B. Inspection:

1. Ensure that pumps have been installed correctly and that there is no objectionable heat or vibration.

2. Check pump and motor alignment, proper motor rotation, and pump and drive units for proper lubrication.

C. Testing:

1. Operate pump on clear water at design point for continuous period of two hours, under supervision of manufacturer's representative and in presence of Engineer.

2. Verify pump performance by performing time-drawdown test or time-fill test.

D. Manufacturer Services: Furnish services of manufacturer's representative experienced in installation of products furnished under this Section for not less than three days on Site for installation, inspection, startup, field testing, and instructing Owner's personnel in operation and maintenance of equipment.

E. Equipment Acceptance:

1. Adjust, repair, modify, or replace components failing to perform as specified and rerun tests.

2. Make final adjustments to equipment under direction of manufacturer's representative.

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F. Furnish installation certificate from equipment manufacturer's representative attesting that equipment has been properly installed and is ready for startup and testing.

3.3 ADJUSTING

A. Section 01 73 00 - Execution Requirements: Requirements for starting and adjusting.

B. Check control functions and adjust as required.

3.4 DEMONSTRATION

A. Section 01 73 00 - Execution Requirements: Requirements for demonstration and training.

B. Demonstrate equipment startup, shutdown, routine maintenance, alarm condition responses, and emergency repair procedures to Owner's personnel.

END OF SECTION