Loren Data's SAM Daily™

FBO DAILY ISSUE OF AUGUST 24, 2012 FBO #3926
SOLICITATION NOTICE

Z -- Lake Darling Pump Station Repair - SF-1442

Notice Date

8/22/2012
 

Notice Type

Combined Synopsis/Solicitation
 

NAICS

238210 — Electrical Contractors and Other Wiring Installation Contractors
 

Contracting Office

Department of the Army, U.S. Army Corps of Engineers, USACE District, St. Paul, Attn: CEMVP-CT, 180 East Fifth Street, St. Paul, Minnesota, 55101-1678, United States
 

ZIP Code

55101-1678
 

Solicitation Number

W912ES-12-T-0146
 

Archive Date

9/15/2012
 

Point of Contact

Jesse Onkka, Phone: 6512905444, Kevin P. Henricks, Phone: 6512905414
 

E-Mail Address

Jesse.L.Onkka@usace.army.mil, kevin.p.henricks@usace.army.mil
(Jesse.L.Onkka@usace.army.mil, kevin.p.henricks@usace.army.mil)
 

Small Business Set-Aside

Total Small Business
 

Description

Reference Drawings SF-1442 Scope: Three (3) control panels, pump station "B/C", pump station "87A" pump station "96A/B", were inundated with floodwaters in the Lake Darling Refuge area of North Dakota. All electrical equipment at these pump stations shall be replaced, with exception of the pumps and pump motors. The main-pumps, sump-pump and motors shall be cleaned and inspected for damage. All electrical wiring shall be replaced to include the service conductors from the secondary of the utility transformer. All conduits shall be cleaned prior to reusing. All pump station equipment shall be tested for proper operation. Note: Operating the pumps without pumping water may damage the pumps (Consult pump manual or manufacturer for operation of pumps). Pump Station general electrical requirements: The electrical equipment is located near the river and is subject to severe moisture conditions. This equipment stands idle for long periods. All new equipment shall be constructed such that it will minimize the effects of these conditions and meet the fit, form and function of the equipment replaced. Drawings are provided for reference. Drawings may not reflect actual site conditions or show all equipment installed and the government does not guarantee the accuracy of the reference drawings and information provided within this document. Therefore, field verification by the Contractor is highly recommended to determine actual site-specific conditions. The point of contact for access to the pump stations is Joel Zietz, Maintenance Worker,, US Army Corps of Engineers (701) 845-2970. All work shall comply with local, state and federal codes; where there is a conflict, the more stringent shall take precedence. All electrical work shall comply with the 2011 National Electrical Code (NFPA 70) unless otherwise noted. Pump Station general requirements: See Attachment "A" Reference drawings: Drawing Number Title R1-P-10/177 Lake Darling Dam -Stage 2. Flood control - Souris River, Minot North Dakota, Index Sheet, Location, Vicinity, and General Plan, Dam and Water Supply System R1-P-64/379 Lake Darling Dam -Stage 2. Flood control - Souris River, Minot North Dakota, Flood Control, Pump Station B/C, Plan and Profile 　 R1-P-64/380 Lake Darling Dam -Stage 2. Flood control - Souris River, Minot North Dakota, Flood Control Plan, Pump Station 87A, Plan and Profile R1-P-64/381 Lake Darling Dam -Stage 2. Flood control - Souris River, Minot North Dakota, Flood Control Plan, Pump Station 96A/B, Plan and Profile R1-P-64/696 Lake Darling Dam -Stage 2. Flood control - Souris River Souris River, Minot North Dakota, Water Supply - MECH/ELEC Pond "B" & "C" Pump Station & Bill of Material R1-P-64/697 Lake Darling Dam -Stage 2. Flood control - Souris River, Minot North Dakota, Water Supply - MECH/ELEC Pond "87A" Pump Station & Bill of Materials - MECH/ELECT R1-P-64/698 Lake Darling Dam -Stage 2. Flood control - Souris River Souris River, Minot North Dakota, Water Supply - MECH/ELEC Pond "96A" & "B" Pump Station & Bill of Materials The Upper Souris National Wildlife Refuge Pump Stations are located south of the Lake Darling dam, north of Minot, North Dakota, (see reference drawing R1-P-10-177). Electrical service for each pump station is an underground feed from a 75 KVA pad-mounted transformer. Voltage is 480/277, three-phase, four-wire, 100 amps service provided by Verendrye Electric Cooperative. Point of contact is John Westby, 1-800-427-2141. Each of the three Pump Stations B/C, 87A and 96A/B consists of two ‐ 5,000 (GPM) submersible pumps, and a single 225 (GPM) sump pump and an outdoor control panel. Description of Work The main 5,000 (GPM) pumps, the 225 (GPM) sump pump and pump motors shall be pulled, cleaned, inspected, tested and reinstalled. Testing shall include as a minimum megger testing and dynometer testing. Record test, inspection results including motor torque current curves and operational condition of pump and motor. Prior to reinstalling the pumps and motors, the Contractor shall provide a copy of the inspection report with recommendations to the Contracting Officer who then will determine if further action is required prior to reinstallation of pumps and motors. Note: Operating the pump without pumping water may damage the pump (Consult pump manual and manufacturer for operation of pumps). 　 Control panel and components shall be replaced with an all-new control panel and components. The control panel is restricted to an area below the gantry crane such that gantry crane operation will not be hindered; the following is the height of the gantry crane beam: Pump Station 87A - beam 10 feet, 1 inch above concrete surface. Pump Station B/C - beam 11 feet, 8 inches above concrete surface. Pump Station 96 A/B - beam 12 feet, 2 inches above concrete surface. All electrical components within the enclosure are restricted to an area above the high water mark and below 72 inches above concrete surface. Pump motor cable ends where insulation is removed shall be sealed and solder-blocked to prevent water intrusion if located below the high water mark; the following is the high water mark for each pump station: Pump Station 87A - high water mark 36 inches above concrete surface. Pump Station B/C - high water mark 48 inches above concrete surface. Pump Station 96 A/B - high water mark 54 inches above concrete surface. The contractor shall provide galvanized steel structural supports, with stainless steel mounting hardware for the mounting enclosures. All electrical pump station components/equipment shall be replaced with new components/equipment. All electrical cables and wiring to include the service entrance and float controls conductors shall be replaced with new cables and new wiring. The Contractor shall clean the inside of all conduits prior to reuse by pulling a brush, a mandrel and a rag through the conduit until no debris comes out. The Contractor shall inspect and test the grounding system using the fall of potential method. 　 　 　 TABLE OF CONTENTS Par. No 1 SCOPE A-1 2 APPLICABLE PUBLICATIONS A-1 3 GENERAL A-2 4 SUBMITTALS A-3 5 MATERIALS A-3 6 EXECUTION A-8 7 INSPECTION AND TESTS A-13 　 　 WETLANDS WATER SUPPLY PUMP PANELS 1. SCOPE. This section includes the replacement, fabrication and installation of three duplex pump control panels and associated devices. The three (3) control panels, pump station (B/C), pump station (87A) and pump station (96A/B), were inundated with floodwaters in the Lake Darling Refuge area of North Dakota. All electrical equipment within these control panels shall be replaced to include the enclosures. All electrical wiring shall be replaced including but not limited to controls and the service conductor from the secondary of the transformer. All conduits shall be cleaned prior to reusing. All pump station equipment shall be tested for proper operation. Operating the pump without pumping water may damage the pump (Consult pump manual or manufacturer for operation of pumps). 2. APPLICABLE PUBLICATIONS. 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. 2.1 ASTM International (ASTM) : ASTM D 709 (2001; R2007) Standard Specification for Laminated Thermosetting Materials 2.2 International Electrotechnical Commission (IEC): IEC 60947-4-1 (2012) Low-Voltage switchgear and controlgear - Part 4-1: Contactors and motor starters - AC semiconductor motor controllers and starters edition 3.0 2.3 Institute of Electrical and Electronic Engineers (IEEE): IEEE C62.41.2 (2002) IEEE Recommended practices On Characterization of Surges in Low-Voltage (1000V and Less) AC Power Circuits 2.4 National Electrical Manufacturers Association Publications (NEMA) : NEMA ICS 1 (2000; R 2005; R 2008; E 2010) Industrial Control and Systems: General Requirements NEMA ICS 2 (2000; R 2005; Errata 2008) Industrial Control and systems Controllers, Contactors, and Overload Relays rated 600 V NEMA ICS 6 (1993; R 2001, R 2006, R 2011) Industrial Control and Systems: Enclosures NEMA 250 (2008) Enclosures for electrical equipment (1000 volts Maximum) NEMA RN 1 (2005) Polyvinyl-Chloride (PVC) Externally Coated Galvanized Rigid Steel Conduit and Intermediate Metal Conduit NEMA WC 70 (2009) Power Cable Rated 2000 V or Less for the Distribution of Electrical Energy--S95-658 2.5 National Fire Protection Association (NFPA) : NFPA 70 (2011; TIA 11-1; Errata 2011) National Electrical Code 2.6 Underwriters Laboratories (UL). UL 6 (2007; reprint Nov 2010) UL Standard for Safety Electrical Rigid Metal Conduit - Steel UL 44 (2010) UL Standard for Safety Thermoset-Insulated Wires and Cables UL 198M (2003; Reprint Oct 2007) UL Standard for Mine-Duty Fuses UL 467 (2007) UL Standard for Safety Grounding and Bonding Equipment UL 489 (2009; Reprint Jun 2011) UL Standard for Safety Molded-Case Circuit Breakers, Molded-Case Switches and Circuit-Breaker Enclosures UL 508 (1999; Reprint Apr 2010) UL Standard for Safety Industrial Control Equipment UL 514A (2004; Reprint Apr 2010) UL Standard for Safety Metallic Outlet Boxes UL 514C (1996; Reprint May 2011) UL standard for Safety Nonmetallic Outlet Boxes, Flush-Device Boxes and Covers UL 651 (2005; Reprint Mar 2010) UL Standard for Safety Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings UL 943 (2006; Reprint Jun 2012) UL Standard for Safety Ground-Fault Circuit Interrupters 3. GENERAL. 3.1 Rules. Unless otherwise specified all work shall comply with the National Electrical Code, NFPA 70. 3.2 UL Ratings. All pump control panels shall be UL "Service Equipment Listed." Construction of all pump control panels shall comply with the requirements of Underwriters Laboratories Industrial Control Panels listing and follow-up service. Use only UL listed or recognized components. 3.3 Storage and Shipment. The contractor shall store all electrical materials and equipment at a site that provides protection from effects of the weather. 4. SUBMITTALS. The contractor shall submit the following items: 4.1 Bill of Materials. A bill of materials for all components and devices supplied. Identify each item by name, manufacturer, catalog number or model number and quantity furnished. Include catalog cuts of all material. 4.2 Shop Drawings. Shop drawings for equipment as follows: 4.2.1 Dimension. Supply dimensioned outline drawings of the pump control-panel enclosures to include mounting supports. 4.2.2 Enclosure Layout. Provide control panel equipment layout drawing identifying components installed on and in the control panel. 4.2.3 Wiring Diagrams. Provide the elementary and internal wiring diagrams for the power and control system. 4.2.4 Schematic Wiring Diagram. Provide Schematic wiring diagram of pump system controls. 4.3 UL Certification. Submit the written certification of the UL serialized label for the pump control panel. 4.4 Equipment Settings. Submit the final field settings for adjustable equipment. 4.5 Grounding Test Report. Submit pump station grounding test report. 4.6 Final Inspection and Performance Test Report. 5. MATERIALS. 5.1 Conductors. Conductors shall be of annealed copper. Conductor size shall be based on the requirements of the National Electrical Code; minimum size shall be 12 AWG unless otherwise noted. All wire and cable shall have minimum rated circuit voltages in accordance with NEMA WC 70. 5.1.1 Control Wire. Provide UL listed, #14 AWG, (41/31) flexible stranded, copper wire. Control wire insulation shall be 90-degree C, XLP type SIS, rated for 600-Volt operation. 5.1.2 Grounding Cables. Grounding cables shall be copper and shall be bare or have green 600-volt insulation. 5.2 Conduit and fittings (if required) shall be as follows : 5.2.1 Rigid Metal Conduit, UL 6. 5.2.2 Rigid Plastic, UL 651. 5.3 Conduit and Device Boxes and Fittings (if required) shall be as follows : 5.3.1 Boxes, Metallic Outlet, UL 514A. 5.3.2 Boxes, Nonmetallic, Outlet and Flush-Device Boxes and Covers, UL 514C. 5.4 Circuit Breakers. Provide thermal magnetic molded case circuit breakers. Breakers shall be in accordance with UL 489. Mechanically-interlocked breakers shall be UL listed assemblies that use a "walking beam" assembly to prevent simultaneous energization of both circuit breakers. Sliding bar type assemblies are not permitted. 5.5 Fuses, High-Interrupting-Capacity, Current-Limiting Type. UL 198M. 5.6 Pump Panel Enclosures. Per NEMA 250 provide a NEMA 3R, enclosure, welded seamless construction with NEMA 3R drains. Material shall be 12-gauge, galvanized steel. Provide center stiffeners for doors and internal cross type stiffeners for enclosures. The enclosure shall be finished with ANSI light gray, Polyester Urethane (Powder). The backpanel and deadfront panel shall be finished with white Polyester Urethane (Powder). All hinge pins shall be stainless steel. 5.6.1 Weatherdoor. Provide gasketed continuously hinged weatherdoor with doorstop kit and padlock provision. Doorstop kit shall not interfere with opening of deadfront inner door. Enclosure design shall include a removable enclosure door-center-post. The maximum single door width shall be 24 inches. 5.6.2 Dead Front. Provide continuously hinged swing-out dead front panels, minimum 14-gauge, held closed with two slotted nickel-plated brass captive panel screws to allow for coin or screwdriver operation. 5.6.3 Backpanel. Provide fixed rigid backpanel, minimum 12-gauge hot-dipped galvanized steel, with white polyester Urethane (Powder) finish. Backpanels larger than 21"H x 13"W shall have at least two edge flanges. Backpanels larger than 33"H x 21"W shall have four edge flanges with welded corners. Minimum 10-gauge thick material shall be used for panels with more than 1900 sq. in. of useful surface area. Panels shall be mounted not less than six inches behind dead front. 5.6.4 Hardware. Provide stainless steel bolts, nuts, washers, lock-washers, and machine screws throughout, unless otherwise noted. 5.7 Control Devices. 5.7.1 Combination Magnetic Starters. Provide full voltage across-the-line magnetic type motor starters sized for IEC utilization category AC-3, with coordinated fused disconnects designed for use with Class 10 rated overload devices. Motor Starters and overcurrent devices shall provide UL certified "Type 2" coordinated protection per NEMA ICS 2. Provide molded construction coils. The Replacement of the coils or contacts shall not require the removal of the starter or power wiring from the control panel. Starters shall meet NEMA ICS 1 and NEMA ICS 2, UL 508 and NEC requirements. 5.7.1.1 Motor Overload Protection. Provide manual reset, temperature compensated, class 10 Melting alloy or bi-metallic thermal overload relays. When applicable provide a manual reset, temperature compensated, overload element to protect the motor. Size overloads for motors in accordance with the National Electrical Code. 5.7.2 Relays. Provide general-purpose plug-in relays that meet or exceed the following specifications: Operating temperature -45 degrees C to 45 degrees C. Three Form C (3PDT) Silver Cadmium Oxide contacts rated to 120/240 volts, 10 amps continuous, 30/15 amps make, 3/1.5 amps break. Continuous rated coils with AC pickup voltages of 85% of nominal voltage at 60 Hertz, 25 degrees C. Coil voltage as required. Transparent polycarbonate dust cover, 11 blade plug-in base. Rail mounted relay base with retainer clips to secure relay in socket. 5.7.2.1 Time Delay Relays. Provide general-purpose plug-in adjustable time delay relays with Polycarbonate dust covers relays that meet or exceed the following specifications:. Selection of the time delay shall be accomplished digitally by the use of 10 binary switches each marked with a time increment. Operating temperature 0 degrees C to 55 degrees C. Two Form C (DPDT) silver cadmium oxide contacts rated 10 amps continuous, 120 volts resistive. Voltage range +10%, -15% of nominal at 60 HZ for AC operation. Operating voltage as required. Repeat accuracy +/-0.1% or +/-8.3 milliseconds whichever is greater. Timing range, "OFF" or "ON" delay, and mode of operation as required for application. Eight or eleven pin tube or blade type plug-in base. Rail mounted relay base with retainer clips to secure relay in socket. 5.7.2.1 Under-Voltage Monitor Relays. Provide adjustable AC under-voltage monitor/relays. An internal relay shall energize (pick-up) when the monitored voltage is below the preset trip point. To prevent nuisance tripping caused by momentary line dips, the relay shall de-energize (drop out) when the voltage falls below the trip point for longer than an adjustable delay. The relay shall have adjustable drop out trip point (set as required) ; pick up trip point 5% above drop out; 5% hysteresis; operate response time of.01 seconds; release response time of 1.0 to 5.0 seconds, adjustable; Operating temperature range 0 degrees C to +55 degrees C; Two Form C (DPDT) silver cadmium oxide contacts rated DPDT, 10 amps, 120 volts resistive; Operating voltage as required; eleven pin tube type plug in, or surface mounted base. Rail mounted relay base with retainer clips to secure relay in socket. 5.7.3 Reset Cycle Timer. Deadfront panel mounted; clutch/motor driven; adjustable reset cycle timer. Contacts shall be rated 10 amperes, 1/4 hp at 120/240 volts. Reset time shall be less than 500 ms and repeat accuracy shall be less than 1-3/4 of the maximum setting. Operating temperature range shall be -20 degrees F to 140 degrees F. 5.7.4 Push-button, Selector Switches and Pilot Lights. Provide heavy duty, oil-tight, watertight NEMA 4 control units. 1-3/16 inch minimum knockout diameter. Pilot lights shall be push to test transformer type. Pilot lights that convey alarm shall be red in color and pilot lights that convey equipment status shall be green in color. Pilot lights and pushbuttons that require boots to make the complete station watertight are NOT PERMITTED. Provide contact blocks suitable for side-by-side and tandem mounting to the operator base. Contact blocks shall have captive mounting screws, with drilled and tapped heads to permit easy tandem mounting of contact blocks. 5.7.5 Running Time Meters. Provide non-resetting hour indicating time meters with 6 digit registers. Numbers shall be at least 1/4 inch high. Registers shall have white numbers on black background. Last digit shall have contrasting colors to indicate tenths of an hour. Enclosure shall be at least 3-1/2 inches square or round. Unit shall be designed for 120VAC operation. 5.7.6 Liquid Level Sensors (Float Switches). Provide direct acting float switches for level detection with molded polyethylene body, internal redundant polyurethane foam flotation, potted switch and cable connections and fine stranded 18 AWG cable with heavy duty synthetic rubber jacket (length as required). Floats shall be connected to control circuitry via an intrinsically-safe, transducer signal module mounted in the pump control panel. 5.7.7 Liquid Level Sensors (Float Switches) Protective Cage. Provide perforated PVC pipe to house the liquid level sensors (float switches) assembly. PVC pipe shall be sized to prevent sensor hang-up within the PVC pipe. 5.7.8 Condensation Heater. Provide a thermostat controlled fan-driven heater unit, with anodized aluminum housing, with a thermostat adjustable from 0° - 100° F, ball bearing fan, and terminal block. Fan shall be size in accordance with manufacturer's recommendations to maintain a temperature rise 20 degrees F above ambient. 5.7.9 Terminal Blocks. Provide channel mounted sectional type terminal blocks rated 600 Volts, 20 Amp minimum. Provide terminal blocks with flat terminal connectors for power and control conductors No. 12 AWG and smaller. Provide terminal blocks with solderless box lugs for power and control conductors larger than No. 12 AWG. 5.7.10 Nameplates. Provide laminated sheet plastic nameplates, 1/16 inch thick conforming to ASTM D-709. Nameplates shall have matte black finish with white center core, square corners, beveled and minimum 3/16 inch block lettering. Minimum nameplate dimensions shall be 3/4 inch by 2- 1/2 inch. Fasten nameplates with rivets, sheet metal screws or permanent adhesive. Nameplates installed on exterior surfaces shall be engraved brass plates, which meet the requirements listed above. 5.7.11 Lightning/Surge Arrestor. Provide lightning/surge arrestor which meet the requirements of IEEE C62.41.2. 5.8 Receptacles and Coverplates. UL 943, Class A or B. Provide ground fault interrupter (GFI) duplex receptacle with weatherproof cover. Receptacle shall be rated 20 amps, 120VAC, NEMA 5-20R configuration. Cover plates for receptacles installed on exterior surfaces shall meet the NEC weatherproof while in use requirements. 5.9 Disconnect Switches. Provide Heavy Duty, horsepower rated disconnect switches where applicable. UL Service Equipment listing required when applicable. 5.10 Fuses. Provide two spare sets of three fuses for each different fuse size provided. 5.11 Grounding and Bonding Equipment. Must comply with UL 467. 5.12 Braided Steel Jacket. Provide a tubular braided stainless steel jacket to protect each electrical power and control cable in the wet well from rodent chewing. The braided jacket shall be seamless, stainless steel and flexible to allow proper float operation. The braided jacket shall be sized to fit snug around the cable with a minimum of 95% coverage. The braided stainless steel shall be fabricated from 0.020 diameter stainless steel wire. 5.13 Alarm Light. The alarm light lens shall be high impact red lexan freznel. The lamp shall be a 500,000 candlepower peak, Xenon tube and operate at 60 flashes per minute. The strobe shall be highly visible in daylight. Both the red lens and Xenon tube shall be replaceable. 5.14 Standby Power Inlet and Plug Assembly. Each power plug and receptacle power inlet device shall be rated for a minimum of 100 amps with an allowance for 10 times the load breaking on fault currents. The device shall be light weight non-metallic, high impact resistant polycarbonate, resistant to heavy abrasion, impact, flame, oils, acids, alkalis, ultraviolet deterioration, and water. Each plug shall be equipped with a cord grip and receptacle-locking device. The plug shall have a tamper-proof safety shutter that prevents access to the receptacle contacts, when the plug is removed, in order to provide for complete isolation from electrically charged "live" parts. Contacts shall be silver tipped to minimize corrosion. 5.15 Hoist and Exhaust Blower Receptacles. 20 Amps, 3-phase, 4-wire, 480 volt, NEMA L16-20, single receptacles with matching plug. Cast metal, weatherproof, spring-door type coverplate. 6. EXECUTION. 6.1 General. Wiring shall consist of insulated conductors installed in rigid, heavy-walled, zinc-coated, steel conduit. Phases A, B, and C shall be identified at the meter sockets, service disconnects and in the pump panels. Materials and equipment shall be installed in accordance with the manufacturer's recommendations. 6.2 Raceway Installation (where required). 6.2.1 Conduit. Conduit shall be one size larger than the National Electrical Code minimum for actual conductor fill. Conduit joints shall be made with approved UL listed threaded couplings and unions. Field cut threads shall be coated with and approved anti-corrosion compound. Exposed conduit runs shall run parallel or perpendicular to structure lines. Runs shall be straight and true. Elbows and bends shall be uniform and symmetrical. Conduits installed in the earth or concrete shall have a factory-applied polyvinyl chloride, plastic resin, or epoxy coating. 6.3 Electrical Service. 6.3.1 Duplex Pump Panel. Provide underground electric services rated 225 Amps, 277/480 Volts, three-phase, four-wire from the utility company transformer to the pump control panel. 6.4 Standby Power. Provide dual mechanically-interlocked, "walking-beam," main circuit breakers for "Line" or "Standby" power. The main breaker shall be fully rated. The standby power breaker shall be sized to permit operation of one pump. Include a properly sized weatherproof power inlet receptacle and plug set mounted on the exterior of each pump panel enclosure. 6.5 Grounding and Bonding (where required). Ground the electrical system in accordance with the National Electrical Code, NFPA 70. The pump panel, sump-vent, access hatch frame, pump guide rails, and discharge piping shall be bonded together with an equipment grounding conductor sized in accordance with the National Electrical Code. Minimum size shall be #2/0 where grounding conductor is exposed to weather or traffic. Each ground connection shall be made with mechanical connectors or exothermic welds and shall be accessible for inspection and checking. Ground conductors shall be stranded copper. 6.6 System Operation (Main Pumps). The control system shall operate on 120 VAC. System operation shall not be affected by momentary power outages. In addition to equipment alarm circuits, each pump motor starter circuit shall include: a. "Hand-Off-Automatic" selector switch. Safety circuits shall not be bypassed. b. Running time meter. c. "Pump Running," "Pump Required" pilot lights. d. "Backspin-Off Delay" time delay relay. e. "Staggered-Start" on recovery from a power failure. f. An adjustable under-voltage relay with properly sized current transformer to stop a pump when it's load current falls below an adjustable set-point for longer than an adjustable time delay. g. Adjustable minimum 30 minute on-delay timer set to limit pump cycling when pump is stopped for any reason. h. A common 60-hour adjustable cycle timer to permit the operator to start both pumps and stop automatic operation on "time-out." The under-voltage/cycle limiting relay circuits shall not affect the automatic time cycle for this timer. Connect to allow user to bypass the timing cycle for continuous operation. 6.6.1 Sump Pumps. Each duplex station shall include motor controls for one dewatering pump. The sump pump control system shall maintain a dry wetwell during periods of station inactivity. In addition to equipment alarm circuits each sump pump motor starter circuit shall include: a. "Hand-Off-Automatic" selector Switch. Hand operation shall bypass float switch and under-voltage relay circuit. Safety circuits shall not be bypassed. b. Running time meter. c. "Pump Running," "Pump Required" pilot lights. d. "Backspin-Off-Delay" time delay relay. e. A single float switch set to provide pump "On" operation. Provide "Test-Off-Normal" selector switch to permit simulation of operation. f. An adjustable under-voltage relay to stop a pump when the voltage falls below an adjustable set point for longer than adjustable time delay. g. Adjustable 30 minute on delay timer set to limit pump cycling when pump is stopped for any reason. 6.6.2 Alarms. Each pump alarm shall actuate a separate seal-in circuit to prevent operation of the affected pump until the alarmed condition has been cleared and the circuit manually reset. Provide local indication of alarmed conditions. Use pilot lights with identification nameplates for local alarms. Provide Test and Reset pushbuttons for alarm circuits. Install common alarm light on exterior of pump control panels to signal an alarmed condition. Pump alarm circuit operation shall not be affected by momentary power interruptions. 6.6.2.1 Motor Over Temperature Alarm. The alarm circuit shall be actuated by thermal sensors embedded in the stator windings of the pump motors. 6.6.2.3 Motor Overload Tripped Alarm. The alarm circuit shall be actuated by the pump motor thermal overload relay. 6.6.2.4 Pump Seal Failure Alarm. The alarm circuit shall be actuated by the pump motor seal-leakage sensor relay. 6.7 Enclosure. The enclosure shall be designed as specified in paragraph "MATERIALS" and shall be listed as "Suitable for Use as Service Equipment." All selector switches, circuit breakers, fused disconnect switches and similar devices shall be semi-flush mounted on the deadfront so that all the components normally actuated by operating personnel are accessible without opening the deadfront, and yet are not exposed to the elements or to unauthorized personnel. The enclosure shall be designed and constructed to accept all of the control equipment as specified. The enclosure shall have adequate space for conduit openings in the bottom to accommodate incoming feeder, branch power, and control cables. 6.8 Control Wiring. Loop wire for proper twist rather than bending at hinge points. Bundle power and control wire neatly. Use nylon tie wraps or continuous plastic spiral binding to secure wire bundles behind devices mounted through deadfront. Use "Panduit" wiring channel to route wire to devices mounted on backpanel. Use insulated fork type compression lugs on both ends of each control wire. The use of splices or wire nuts is not permitted. 6.9 Terminal Blocks. Locate terminal blocks for external connection near bottom of enclosure. Use no more than one wire per terminal point. Identify and segregate power conductors and terminals. 6.10 Identification. Identify each wire and device. Provide screw-applied, engraved, black, laminated plastic nameplates with white letters for control equipment mounted on the deadfront and backpanel. Label control wires 1/2" from each termination with properly sized and oriented, heat-stamped, black on white PVC sleeve markers, or computer printed self-laminating vinyl labels. Label all terminal blocks with pre-printed vinyl-cloth markers. The use of "DYMO" type labels is not permitted anywhere. 6.11 Control Components. The control system shall be designed and fabricated to operate as specified and include the following control components installed in the specified enclosure, along with the necessary interconnecting wiring, terminal blocks and miscellaneous devices for a complete control system: 6.11.1 Mechanically interlocked "Line" and "Standby" circuit breakers. 6.11.2 Individually mounted fused disconnect switch for each pump. 6.11.3 One control power circuit breaker 6.11.4 One 20 amp, 1-pole circuit breaker for three 120-volt convenience outlets 6.11.5 One 20 amp, 3-pole circuit breaker for three 480-volt receptacles. 6.11.6 Full voltage magnetic starters with over-load elements in each phase for each pump. 6.11.6 Common 60 hour reset cycle timer for Start-Stop control, O.L. reset controls, and running time meter, for each pump motor. Provide "Hand-Off-Auto" Control station for each pump. 6.11.7 Pump Motor Over-temperature protector for each motor, including motor temperature sensor, manual reset pushbutton, and switchable override, as applicable. 6.11.8 Pump Run, Leakage Sensor, OL Tripped, and Overtemp pilot lights and push-buttons for each pump, as applicable. 6.11.9 Top mounted common alarm light. 6.11.10 One 20 ampere, 120 volt, GFI duplex receptacle installed on dead front. 6.11.11 One 20 ampere, 120 volt, GFI duplex receptacle installed on Panel exterior. 6.11.12 Provisions for connecting one remotely mounted 20 ampere, 120-volt, GFI receptacle. 6.11.13 Three weatherproof 20 ampere, 480-volt, 3-phase, 4-wire receptacles, NEMA L16-20R, installed on panel exterior for two portable exhaust blowers and an overhead crane. 6.11.14 One weatherproof 100 ampere, 480-volt, 3-phase standby power inlet with angle adapter mounted on exterior of each pump panel. 6.11.15 Thermostat controlled condensation heater. 6.12 Pump Panel Installation. The pump panels shall be rigidly mounted. Pump power and control cables shall enter the panel in individual conduits to permit easy removal. Install and connect all power and control cables. Conductors from the wet well to the pump panel shall be installed without splice. All conduits shall be sealed in the pump panels with Type CSB Series conduit sealing bushings Adjust float switches to operate at the elevations as directed. 6.12.1 Braided Cable Jackets. All pump power, control and float cables located in the wet well shall be individually installed in a braided steel jacket outer jacket for rodent protection. 6.13 Liquid Level Sensors (Float Switches). The liquid level sensors (float switches) shall be supported from the float anchor chain. The sensors shall be supplied with sufficient cable to reach the control enclosure termination without splices, and shall be field terminated. 6.13.1 Liquid Level Sensors (Float Switches) Protective Cage. The liquid level sensors (float switches) protective cage shall be mounted in an accessible location that limits float exposure to heavy wave action or cavitations. Adjust orientation of assembly and pipe to prevent sensor hang-up within the PVC pipe and secure sensor cables to prevent cable engagement with level sensors. 7. INSPECTION AND TESTS. 7.1 Grounding Test. Test grounding system to ensure continuity, and that resistance to ground is not excessive. Test each ground rod for resistance to ground before making connections to rod; tie grounding system together and test for resistance to ground. Make resistance measurements in dry weather, no earlier than 48 hours after rainfall. Submit written results of each test to Contracting Officer, and indicate location of rods as well as resistance and soil condition at time measurements were made. At a minimum the grounding tests shall comply with NFPA 70. 7.2 General. After the installation is completed, and at such time as the Contracting Officer may direct, the Contractor shall conduct an operating/performance test for approval. The equipment shall be demonstrated to operate in accordance with the requirements of this specification. The test shall be performed in the presence of the Contracting Officer. The Contractor shall furnish all instruments and personnel required for the tests. The Contractor shall provide a written report to the Contracting Officer as to the results of the final inspection and operational/performance test.. Description Page No.
 

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(https://www.fbo.gov/spg/USA/COE/DACA37/W912ES-12-T-0146/listing.html)
 

Place of Performance

Address: North Dakota, United States
 

Record

SN02851402-W 20120824/120823001850-2b08585715e95c841d602ab565f0398b (fbodaily.com)
 

Source

FedBizOpps Link to This Notice
(may not be valid after Archive Date)

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