SECTION 11650B
DETAIL BIOSOLIDS THERMAL DRYING SYSTEM PROGRESSING CAVITY PUMPS
PART 1 GENERAL
1.1 SECTION INCLUDES:
A. Progressing Cavity Pumps:
1. Cake Transfer Pumps:
a. Cake Transfer Pump No. 1: P-11-18.
b. Cake Transfer Pump No. 2: P-11-19.
2. Dryer Feed Pumps:
a. Dryer Feed Pump No. 1: P-11-21.
b. Dryer Feed Pump No. 2: P-11-22.
B. Major components included with, but not limited to:
1. Motor.
2. Mechanical drive.
3. Pump.
4. Base.
1.2 SYSTEM DESCRIPTION
A. See General Specification Section 11650, Solids Thermal Drying System – General.
B. The dewatered cake transfer pumps and dryer feed pumps shall transfer sludge cake at 12 to 20 percent solids from the cake bins to the dryer.
1.3 REFERENCES
A. ASTM A48 - Gray iron castings.
B. AGMA Section 2001-B88 - Fundamental rating factors and calculation methods for involute and helical gear teeth.
C. AGMA Section 6034-B92 - Practice of enclosed cylindrical-worm gear speed reducers and gear motors.
D. AFBMA Std: 9 - Load ratings and fatigue life for ball bearings.
E. AFBMA Std: 11 - Load ratings and fatigue life for roller bearings.
1.4 DESIGN REQUIREMENTS
A. See General Specification Section 11650, Solids Thermal Drying System – General.
B. General Requirements:
1. Liquid pumped: Dewatered WAS 12.0 % – 20 % sludge concentration, percent dry weight.
2. Specific gravity of liquid: 1.0 to 1.1.
3. Maximum liquid temperature (F): 70ยบ.
4. Average sludge concentration, percent dry weight (%): 15. 5. pH (s.u.): 6.0 – 8.0.
6. Maximum pump speed, rpm: 100.
7. Discharge size (inch): 6.
8. Suction: Open throat suction housing with breaking/mixing paddles.
C. Hydraulic Requirements:
1. Minimum design flow, gpm: 7.
2. Maximum design flow, gpm: 30.
3. Maximum discharge pressure, psi: 150.
1.5 SUBMITTALS
A. See General Specification Section 11650, Solids Thermal Drying System - General:
1. Complete assembly and installation drawings.
2. Descriptive information on material and equipment furnished.
3. Electric motor data.
4. Complete performance curves showing:
a. Capacity.
b. Head.
c. Brake horsepower requirements.
5. Weights of unit components and accessories.
B. Submit certificates of proper installation and operator training under provisions of Division 1.
1.6 OPERATION AND MAINTENANCE DATA
A. See General Specification Section 11650, Solids Thermal Drying System - General.
1.7 DELIVERY, STORAGE AND HANDLING
A. See General Specification Section 11650, Solids Thermal Drying System - General.
1.8 QUALITY ASSURANCE
A. See General Specification Section 11650, Solids Thermal Drying System - General.
1.9 EQUIPMENT SUPPLIER'S QUALIFICATIONS:
A. See General Specification Section 11650, Solids Thermal Drying System - General.
1.10 PAYMENT SCHEDULE
A. See General Specification Section 11650, Solids Thermal Drying System – General.
PART 2 PRODUCTS
2.1 ACCEPTABLE EQUIPMENT SUPPLIERS
A. Komline-Sanderson, Peapack, NJ.
1. The contract documents are based on this equipment.
B. Andritz Separation Inc., Arlington, TX.
1. Bidders proposing to offer Andritz Separation as the Equipment Supplier shall incorporate in the price all additional costs for and be responsible for layout, piping, plumbing, mechanical, HVAC, structural, instrumentation and control, electrical, and all other changes to the Work required to incorporate the proposed equipment into the Work.
C. Or Equal.
2.2 GENERAL
A. See General Specification Section 11650, Solids Thermal Drying System – General.
2.3 METAL FABRICATION
A. See General Specification Section 11650, Solids Thermal Drying System – General.
2.4 PROGRESSING CAVITY PUMPS
A. Acceptable Manufacturers:
1. Moyno, Inc., Springfield, OH.
2. Netzch, Incorporated, Exton, PA.
3. Or equal.
B. Motor:
1. Furnish motor compatible with the driven equipment herein. Motors shall be furnished as specified in Section 11338, and shall conform to the detailed requirements herein:
2. Pump Motor:
a. Motor maximum nameplate horsepower: 40 HP.
b. Type drive: Variable speed Inverter Duty Rated.
c. Maximum (synchronous) motor rpm: 1750.
d. Motor mounting: Horizontal.
e. Enclosure: TEFC.
f. Power: 460 volt, 3 phase, 60 Hz.
g. The motor shall have NEMA B starting torque and low starting current. The motor shall not be overloaded beyond the nameplate rating under any normal conditions encountered.
h. Motor to be provided with Klixon bimetal opening contact type overload temperature sensor in each phase winding. Sensors shall open when motor temperature exceeds manufacture recommended operation temperature and shall automatically reset when motor temperature
reaches safe operating temperature. Sensors to be connected in series, with each sensor located in the hottest spot of the phase windings.
C. Pumps’ Mechanical Drive:
1. Drive mechanism:
a. Type: Direct Drive right angle gear drive.
b. Coupling provided between reducer and pump.
D. Pump Construction:
1. Pump body: Pump housing, supports, and packing glands.
a. Construction: Cast iron ASTM A48 or welded steel.
b. Suction: Open throat suction housing with auger feed to the pumping elements.
1) Minimum suction dimensions: 68” x 13”
c. Discharge flange: ANSI 250 pound bolt circles.
2. Rotor:
a. Alloy steel or alloy steel with a coating of 0.010-inch hard chrome plating.
b. Four stage.
3. Stator:
a. Construction: Nitrile or mild steel, 65 to 70 durometer hardness.
b. Mounting: Through-bolts from discharge flange to suction casing or flat face flanges with removable clamp rings.
4. Connecting rod:
a. Construction: alloy steel or mild steel.
b. Joints: Double sealed oil-filled crown gear joint.
c. Length: Minimum length to maintain an operating angle of 1 degree or less.
5. Bearings:
a. Outboard end: Ball or roller thrust bearing AFBMA B-10 life of 100,000 hours.
b. Inboard end: Ball or roller radial bearing AFBMA B-10 life of 100,000 hours.
c. Lubrication: Grease with addition and relief fittings.
6. Shaft: alloy steel.
7. Stuffing Box:
a. Seal: Double mechanical John Crane Type 1 or Type 2 or Burgman MG1.
b. Rotating seal faces: Silicon Carbide.
c. Stationary seal faces: Silicon Carbide.
d. Mechanical seal gland, spring and collar: Stainless steel.
e. Bellows and O-ring: Buna-n.
f. Lubrication: Plant water.
8. Pump Base:
a. Construction: Minimum 3/8-inch thick fabricated steel or cast iron.
b. Provide common pump and motor mounting.
c. Factory mount complete pumping unit including motor, gear unit and pump.
d. Provide grout holes.
e. In-line drive mechanism. See Drawings for orientation.
2.5 ACCESSORIES
A. Gauge Connections:
1. Provide 3/8-inch NPT tapped and plugged suction and discharge gauge connections on the pump nozzles or flanges.
2. When unable to install in pump, tap adjacent discharge and/or suction piping as shown on the Drawings.
2.6 FINISHING
A. Shop and Field Painting: Conform to Section 09900, System No. 5. Verify compatibility of shop prime and field paint.
2.7 INSTRUMENTATION AND CONTROLS
A. Heat Sensor (TE/TSH-11-X-1):
1. Provide run-dry protection for each pump consisting of a temperature probe installed in the pump stator connected to electronic temperature switch for switching off the pump upon high temperature. Temperature switch shall be equipped with a LED display.
2. Temperature switch shall have DPDT output contacts rated at 120 Vac, 2 Amp minimum.
3. Temperature switch shall be powered with 120 Vac.
PART 3 EXECUTION
3.1 INSTALLATION
A. In accordance with Drawings, shop drawings and manufacturer's instructions.
B. Level bases and grout with non-shrinking grout.
C. Pipe seal water to stuffing box as shown on the Drawings.
D. Pipe all pump drains to hub drains.
E. Align pump and drive.
F. Eliminate any strain from piping.
3.2 MANUFACTURER'S SERVICES
A. Provide manufacturer's services under provisions of Division 1.
B. Minimum Service Requirements:
1. Installation: As required for proper installation.
2. Start-up and functional testing: One day on site.
3. Operator training: One day on site.
C. Service to Repair Defective Work: Provide during one-year warranty period under the provisions of General Conditions.
END OF SECTION
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